6139362_PC_AT_Technical_Reference_Sep85 6139362 PC AT Technical Reference Sep85
6139362_PC_AT_Technical_Reference_Sep85 6139362_PC_AT_Technical_Reference_Sep85
User Manual: 6139362_PC_AT_Technical_Reference_Sep85
Open the PDF directly: View PDF 
.
Page Count: 507
| Download | |
| Open PDF In Browser | View PDF |
------ - ----------- --- _--.-
Personal Computer
Hardware Reference
Library
Technical
Reference
First Edition (September, 1985)
The following paragraph does not apply to the United Kingdom or any country where such
provisions are inconsistent with local law: INTERNATIONAL BUSINESS MACHINES
CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of
express or implied warranties in certain transactions, therefore, this statement may not
apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are
periodically made to the information herein; these changes will be incorporated in new
editions of the publication. IBM may make improvements and/or changes in the
product(s) and/or the program(s) described in this publication at any time.
It is possible that this publication may contain reference to, or information about, IBM
products (machines and programs), programming, or services that are not announced in
your country. Such references or information must not be construed to mean that IBM
intends to announce such IBM products, programming, or services in your country.
Products are not stocked at the address below. Requests for copies of this publication and
for technical information about IBM Personal Computer products should be made to your
authorized IBM Personal Computer dealer, IBM Product Center, or your IBM Marketing
Representative.
The following paragraph applies only to the United States and Puerto Rico: A Reader's
Comment Form is provided at the back of this publication. If the form has been removed,
address comments to: IBM Corporation, Personal Computer, P.O. Box 1328-C, Boca
Raton, Florida 33432. IBM may use or distribute any of the information you supply in
any way it believes appropriate without incurring any obligations whatever.
© Copyright International Business Machines Corporation 1985
Federal Communications Commission
Radio Frequency Interference Statement
Warning: The equipment described herein has been
certified to comply with the limits for a Class B computing
device, pursuant to Subpart J of Part 15 of the FCC rules.
Only peripherals (computer input/output devices, terminals,
printers, etc.) certified to comply with the Class B limits may
be attached to the computer. Operation with non-certified
peripherals is likely to result in interference to radio and TV
reception. If peripherals not offered by mM are used with
the equipment, it is suggested to use shielded grounded cables
with in-line filters if necessary.
CAUTION
This product described herein is equipped with a grounded
plug for the user's safety. It is to be used in conjunction with
a properly grounded receptacle to avoid electrical shock.
iii
Notes:
iv
Preface
This manual describes the various units of the IBM Personal
Computer AT and how they interact. It also has information
about the basic input/output system (BIOS) and about
programming support.
The information in this publication is for reference, and is
intended for hardware and program designers, programmers,
engineers, and anyone else who needs to understand the design
and operation of the IDM Personal Computer AT.
This manual consists of nine sections:
•
•
•
•
•
•
•
The first three sections describe the hardware aspects of the
IBM Personal Computer AT including signal charts and
register information.
.
Section 4 describes keyboard operation, the commands to
and from the system, and the various keyboard layouts.
Section 5 contains information about the usage of BIOS and
system BIOS listing.
. . .
Section 6 contains instruction sets for the 80286
microprocessor arid the 80287 math coprocessor.
Section 7 provides information about characters, keystrokes,
and colors.
. .
.
Section 8 has general communications information.
Section 9 contains information about the compatibility of the
IDM Personal Computer AT and the r~st of the IDM
Personal Computer family ..
a
A glossary of terms and a bibliography of related publications are
included.
v
Prerequisite Publications
Guide to Operations for the IBM Personal Computer AT
Suggested Reading
•
BASIC for the IBM Personal Computer
•
Disk Operating System (DOS)
•
MACRO Assembler for the IBM Personal Computer
vi
Contents
SECTION 1. SYSTEM BOARD ..................... 1-1
Memory .................................... 1-4
Microprocessor ............................... 1-4
System Performance ........................... 1-7
Direct Memory Access ......................... 1-9
System Interrupts ............................ 1-12
Hardware Interrupt Listing ................. 1-13
Interrupt Sharing .... . . . . . . . . . . . . . . . . . . . .. 1-14
System Timers .............................. 1-22
System Clock ............................... 1-23
ROM Subsystem ............................. 1-23
RAM Subsystem ............................. 1-24
I/O Channel ................................ 1-24
Connectors ............................. 1-25
I/O Channel Signal Description ............. 1-31
NMI and Coprocessor Controls ............. 1-38
Other Circuits ............................... 1-40
Speaker ................................ 1-40
RAM Jumpers ........................... 1-40
Display Switch .......................... 1-41
Variable Capacitor ....................... 1-41
Keyboard Controller ...................... 1-42
Real-Time Clock/CMOS RAM Information ... 1-56
Specifications ............................... 1-69
System Unit ............................ 1-69
Connectors ............................. 1-71
Logic Diagrams - Type 1 .................. 1-76
Logic Diagrams - Type 2 .................. 1-98
SECTION 2. COPROCESSOR ......................
Description ..................................
Programming Interface .........................
Hardware Interface ............................
2-1
2-3
2-3
2-4
SECTION 3. POWER SUPPLY ...................... 3-1
Inputs ...................................... 3-3
vii
Outputs .....................................
DC Output Protection .........................
Output Voltage Sequencing .....................
No-Load Operation ...........................
Power-Good Signal ............................
Connectors ..................................
3-4
3-4
3-4
3-5
3-5
3 -7
SECTION 4. KEYBOARD .......................... 4-1
Description .................................. 4-3
Power-On Routine ............................ 4-4
Commands from the System ..................... 4-5
Commands to the System ....................... 4-9
Keyboard Scan-Code Outputs .................. 4-11
Clock and Data Signals ........................ 4-12
Keyboard Layouts ........................... 4-15
Specifications ............................... 4-22
Logic Diagram .............................. 4-23
SECTION 5. SYSTEM BIOS ........................ 5-1
System BIOS Usage ........................... 5-3
Keyboard Encoding and Usage .................. 5-13
Quick Reference ......................... ,... 5-24
SECTION 6. INSTRUCTION SET ................... 6-1
80286 Instruction Set .......................... 6-3
Data Transfer ............................ 6-3
Arithmetic ............................... 6-6
Logic ................................... 6-9
String Manipulation ...................... 6-11
Control Transfer ......................... 6-13
Processor Control ........................ 6-17
Protection Control ....................... 6-18
80287 Coprocessor Instruction Set ............... 6-22
DataTransfer ........................... 6-22
Comparison ............................ 6-23
Constants .............................. 6-24
Arithmetic .............................. 6-25
Transcendental .......................... 6-26
SECTION 7. CHARACTERS, KEYSTROKES, AND
COLORS .........................••........... 7-1
Character Codes .............................. 7-3
Quick Reference ............................. 7-14
viii
SECTION 8. COMMUNICATIONS .................. 8-1
Hardware ................................... 8-3
Establishing a Communications Link .............. 8-5
SECTION 9. IBM PERSONAL COMPUTER
COMPATIBILITY ............................... 9-1
Hardware Considerations ....................... 9-3
System Board ............................ 9-3
Fixed Disk Drive .......................... 9-5
Diskette Drive Compatibility ................ 9-5
Copy Protection .......................... 9-5
Application Guidelines ......................... 9-7
High-Level Language Considerations .......... 9-7
Assembler Language Programming Considerations 9-8
Multitasking Provisions .................... 9-16
Machine-Sensitive Code ................... 9-19
Glossary
................................... Glossary-1
Bibliography .............................. Bibliography-1
Index ........................................ Index-1
ix
Notes:
x
INDEX TAB LISTING
Section 1: System Board ............................... .
Section 2: Coprocessor ................................ .
Section 3: Power Supply ............................... .
Section 4: Keyboard .................................. .
Section 5: System BIOS ............................... .
Section 6: Instruction Set .............................. .
xi
Notes:
xii
Section 7: Characters, Keystrokes, and Colors .............. .
Section 8: Communications ............................ .
Section 9: Compatibility ............................... .
Glossary .................................. ; ........ .
Bibliography ........................................ .
Index .............................................. .
System Block Diagram
System Unit
System Board
80286
Microprocessor
80287
Coprocessor
Oscillator
Power Supply
16 Interrupt
Levels
ROM
Speaker
Connector
Speaker
7 Channel
DMA
RAM
Keyboard
Controller
Keyboard
CMOS
Real-Time
Clock
Battery
Connector
Battery
1/0
Channel
115/230
00000000
DDDDD D
I
xiv
•I
Adapters
I
Fixed
Disk
Drives
Diskette
Dr i ves
I
I
Fixed Disk and
Diskette Adapter
SECTION 1. SYSTEM BOARD
Contents
Memory ........................•................ 1-4
Microprocessor ................................... 1-4
Real Address Mode .......................... 1-4
Protected (Virtual Address) Mode .............. 1-5
System Performance ............................... 1-7
Direct Memory Access
............................. 1-9
System Interrupts ................................
Hardware Interrupt Listing ......................
Interrupt Sharing ..............................
Design Overview ...........................
Program Support ...........................
Precautions ...............................
Examples .................................
1-12
1-13
1-14
1-14
1-15
1-17
1-18
System Timers ..........................•........ 1-22
System Clock ................................•... 1-23
ROM Subsystem
1-23
RAM Subsystem
1-24
110 Channel
1-24
1-25
1-31
1-38
....................................
Connectors ..................................
I/O Channel Signal Description ..................
NMI and Coprocessor Controls ..................
Other Circuits .............................•.•... 1-40
Speaker ..................................... 1-40
RAM Jumpers ................................ 1-40
System Board
1-1
I
Display Switch ............ ;...................
Variable Capacitor ............................
Keyboard Controller .. ,........................
Keyboard Controller Initialization ..............
Receiving Data from the Keyboard .............
Scan Code Translation .......................
Sending Data to the Keyboard .................
Inhibit ...................................
Keyboard Controller System Interface ..........
Status Register .............................
Status-Register Bit Definition .................
Output Buffer .............................
Input Buffer ...............................
Commands (I/O Address Hex 64) .............
I/O Ports .................................
Real-Time Clock/CMOS RAM Information ........
Real-Time Clock Information .................
CMOS RAM Configuration Information .........
I/O Operations .............................
Specifications
................................... 1-69
System Unit ..................................
Size .....................................
Weight ...................................
Power Cables ..............................
Environment ..............................
Heat Output ...............................
Noise Level ...............................
Electrical .................................
Connectors ..................................
Logic Diagrams - Type 1 ........................
Logic Diagrams - Type 2 ........................
1-2
1-41
1-41
1-42
1-42
1-43
1-43
1-48
1-48
1-48
1-49
1-49
1-50
1-51
1-51
1-54
1-56
1-57
1-59
1-68
System Board
1-69
1-69
1-69
1-69
1-69
1-70
1-70
1-70
1-71
1-76
1-98
The type 1 system board is approximately 30.5 by 35 centimeters
(12 by 13.8 inches). The type 2 system board is approximately
23.8 by 35 centimeters (9.3 by 13.8 inches). Both types of
system boards use very large scale integration (VLSI) technology
and have the following components:
•
Intel 80286 Microprocessor
•
System support function:
Seven-Channel Direct Memory Access (DMA)
Sixteen-level interrupt
Three programmable timers
System clock
•
64K read-only memory (ROM) subsystem, expandable to
128K
•
A 512K random-access memory (RAM) Subsystem
•
Eight input/output (I/O) slots:
Six with a 36-pin and a 62-pin card-edge socket
Two with only the 62-pin card-edge socket
•
Speaker attachment
•
Keyboard attachment
•
Complementary metal oxide semiconductor (CMOS)
memory RAM to maintain system configuration
•
Real-Time Clock
•
Battery backup for CMOS configuration table and
Real-Time Clock
System Board
1-3
Memory
The type 1 system board has four banks of memory sockets, each
supporting 9 128K-by-1-bit modules for a total memory size of
512K, with parity checking.
The type 2 system board has two banks of memory sockets, each
supporting 9 256K-by-1-bit modules for a total memory size of
512K, with parity checking.
Microprocessor
The Intel 80286 microprocessor has a 24-bit address, 16-bit
memory interface 1 , an extensive instruction set, DMA and
interrupt support capabilities, a hardware fixed-point multiply and
divide, integrated memory management, four-level memory
protection, 1G (1,073,741,824 bytes) of virtual address space for
each task, and two operating modes: the 8086-compatible real
address mode and the protected or virtual address mode. More
detailed descriptions of the microprocessor may be found in the
publications listed in the Bibliography of this manual.
Real Address Mode
In the real address mode, the microprocessor's physical memory is
a contiguous array of up to one megabyte. The microprocessor
addresses memory by generating 20-bit physical addresses.
The selector portion of the pointer is interpreted as the upper 16
bits of a 20-bit segment address. The lower 4 bits of the 20-bit
segment address are always zero. Therefore, segment addresses
begin on multiples of 16 bytes.
In this manual, the term interface refers to a device that carries signals between
functional units.
1-4
System Board
All segments in the real address mode are 64 K in size and may be
read, written, or executed. An exception or interrupt can occur if
data operands or instructions attempt to wrap around the end of a
segment. For example, a word with its low-order byte at offset
FFFF and its high-order byte at 0000. If, in the real address
mode, the information contained in the segment does not use the
full 64K, the unused end of the segment may be overlayed by
another segment to reduce physical memory requirements.
Protected (Virtual Address) Mode
The protected mode offers extended physical and virtual memory
address space, memory protection mechanisms, and new
operations to support operating systems and virtual memory.
Note: See "BIOS Programming Hints" in Section 5 for
special cautions while operating in the protected mode.
The protected mode provides a 1G virtual address space for each
task mapped into a 16M physical address space. The virtual
address space may be larger than the physical address space,
because any use of an address that does not map to a physical
memory location will cause a restartable exception.
As in the real address mode, the protected mode uses 32-bit
pointers, consisting of 16-bit selector and offset components.
The selector, however, specifies an index into a memory resident
table rather than the upper 16 bits of a real memory address. The
24-bit base address of the desired segment is obtained from the
tables in memory. The 16-bitoffset is added to the segment base
address to form the physical address. The microprocessor
automatically refers to the tables whenever a segment register is
loaded with a selector. All instructions that load a segment
register will refer to the memory-based tables without additional
program support. The memory-based tables contain 8-byte
values called descriptors.
System Board
1-5
Following is a block diagram of the system board.
1-6
System Board
System Performance
The 80286 microprocessor operates at 6 MHz, resulting in a clock
cycle time of 167 nanoseconds.
A bus cycle requires 3 clock cycles (which includes 1 wait state)
so that a 500-nanosecond, 16-bit, microprocessor cycle time is
achieved. Eight-bit bus operations to 8-bit devices take 6 clock
cycles (which include 4 wait states), resulting in a
WOO-nanosecond microprocessor cycle. Sixteen-bit bus
operations to 8-bit devices take 12 clock cycles (which include 10
wait states) resulting in a 2-microsecond microprocessor cycle.
The refresh controller steps one refresh address every 15
microseconds. Each refresh cycle requires 5 clock cycles to
refresh all of the system's dynamic memory; 256 refresh cycles
are required every 4 milliseconds. The following formula
determines the percentage of bandwidth used for refresh.
% Bandwidth used
5 cycles X 256
for Refresh
-------------4 ms/167 ns
1280
24000
= 5.3%
The DMA controller operates at 3 MHz, which results in a clock
cycle time of 333 nanoseconds. All DMA data-transfer bus
cycles are 5 clock cycles or 1.66 microseconds. Cycles spent in
the transfer of bus control are not included.
DMA channels 0, 1,2, and 3 are used for 8-bit data transfers, and
channels 5, 6, and 7 process 16-bit transfers. Channel 4 is used
to cascade channels 0 through 3 to the microprocessor.
System Board
1-7
The following figure is a system memory map.
Address
Name
Functi on
000000 to
07FFFF
512K system
board
System board memory
080000 to
09FFFF
128K
I/O channel memory - IBM Personal
Computer AT 128K Memory Expansion
Option
OAOOOO to
OBFFFF
128K video
RAM
Reserved for graphics display buffer
OCOOOO to
ODFFFF
128K I/O
expansion ROM
Reserved for ROM on I/O adapters
OEOOOO to
OEFFFF
64K reserved
on system board
Duplicated code assignment at
address FEOOOO
OFOOOO to
OFFFFF
64K ROM on the
system board
Duplicated code assignment at
address FFOOOO
100000 to
FDFFFF
Maximum
memory 15M
I/O channel memory - 512K to 15M
installed on memory expansion options
FEOOOO to
FEFFFF
64K reserved
on system board
Duplicated code assignment at
address OEOOOO
FFOOOO to
FFFFFF
64K ROM on the
system board
Duplicated code assignment at
address OFOOOO
System Memory Map
1-8
System Board
Direct Memory Access
The system supports seven direct memory access (DMA)
chartnels. Two Intel 8237A-5 DMA Controller chips are used,
with four channels for each chip. The DMA channels are
assigned as follows:
Controller 1
Ch 0 - Reserved
Ch 1 - SDLC
Ch 2 - Diskette ( IBM
Personai Computer)
Ch 3 - Reserved
Controller 2
Ch 4 - Cascade for Ctlr 1
Ch 5 - Reserved
Ch 6 - Reserved
Ch 7 - Reserved
DMA Channels
DMA controller 1 contains channels 0 through 3. These channels
support 8-bit data transfers between 8-bit I/O adapters and 8- or
16-bit system memory. Each channel can transfer data
throughout the 16M system-address space in 64K blocks.
The following figures show address generation for the DMA
channels.
Source
DMA Page Registers
Controller
Address
A23<---------->A16
A15<---------->AO
Address Generation for DMA Channels 0 through 3
Note: The addressing signal, byte high enable (BHE), is
generated by inverting address line AO.
I
I
System Board
1-9
DMA controller 2 contains channels 4 through 7. Channel 4 is
used to cascade channels 0 through 3 to the microprocessor.
Channels 5, 6, and 7 support 16-bit data transfers between 16-bit
I/O adapters and 16-bit system memory. These DMA channels
can transfer data throughout the 16M system-address space in
128K blocks. Channels 5, 6, and 7 cannot transfer data on
odd-byte boundaries.
Source
DMA Page Registers
Controller
Address
A23<---------->AI7
AI6<---------->Al
Address Generation for DMA Channels 5 through 7
Note: The addressing signals, BHE and AO, are forced to a
logicalO.
The following figure shows the addresses for the page register.
Page Register
DMA Channel
DMA Channel
DMA Channel
DMA Channel
DMA Channel
DMA Channel
DMA Channel
Refresh
0
1
2
3
5
6
7
1/0 Hex Address
0087
0083
0081
0082
008s
0089
008A
008F
Page Register Addresses
Addresses for all DMA channels do not increase or decrease
through page boundaries (64K for channels 0 through 3, and
128K for channels 5 through 7).
DMA channels 5 through 7 perform 16-bit data transfers. Access
can be gained only to 16-bit devices (I/O or memory) during the
DMA cycles of channels 5 through 7. Access to the DMA
controller, which controls these channels, is through I/O
addresses hex OCO through ODP.
1-10
System Board
The DMA controller command code addresses follow.
Hex
Address
OCO
OC2
Register Function
OC6
OC8
DCA
OCC
OCE
CHO
CHO
CHl
CHl
CH2
CH2
CH3
CH3
000
002
004
006
008
OOA
DOC
ODE
Read Status Register/Write Command Register
Write Request Register
Write Single Mask Register Bit
Write Mode Register
Clear Byte Pointer Flip-Flop
Read Temporary Register/Write Master Clear
Clear Mask Register
Write All Mask Register Bits
oc4
base
base
base
base
base
base
base
base
and
and
and
and
and
and
and
and
current
current
current
current
current
current
current
current
address
word count
address
word count
address
word count
address
word count
DMA Controller
All DMA memory transfers made with channels 5 through 7 must
occur on even-byte boundaries. When the base address for these
channels is programmed, the real address divided by 2 is the data
written to the base address register. Also, when the base word
count for channels 5 through 7 is programmed, the count is the
number of 16-bit words to be transferred. Therefore, DMA
channels 5 through 7 can transfer 65,536 words, or 128Kb
maximum, for any selected page of memory. These DMA
channels divide the 16M memory space into 128K pages. When
the DMA page registers for channels 5 through 7 are
programmed, data bits D7 through Dl contain the high-order
seven address bits (A23 through A17) of the desired memory
space. Data bit DO of the page registers for channels 5 through 7
is not used in the generation of the DMA memory address.
At power-on time, all internal locations, especially the mode
registers, should be loaded with some valid value. This is done
even if some channels are unused.
System Board
1-11
System Interrupts
The 80286 microprocessor's non-maskable interrupt (NMI) and
two 8259A Controller chips provide 16 levels of system
interrupts.
Note: Any or all interrupts may be masked (including the
microprocessor's NMI).
1-12
System Board
Hardware Interrupt Listing
The following shows the interrupt-level assignments in decreasing
priority.
Level
Function
Microprocessor NMI
Parity or I/O Channel Check
Interrupt Controllers
CTRL I
CTRL 2
IRQ. 0
IRQ 1
IRQ 2 +-
Timer OutlJut 0
Keyboard (Output Suffer Full)
Interrupt from CTRL 2
IRQ 8
IRQ 9
-
IRQ 3
IRQ 4
IRQ 5
IRQ 6
IRQ 7
IRQ.
IRQ.
IRQ
IRQ
IRQ
IRQ
10
11
12
13
14
15
Realtime Clock Interrupt
Software Redirected to INT OAH
PC Network *
PC Network(Alt.) *
Reserved
Reserved
Reserved
Coprclcessor
Fixed Disk Controller
Reserved
Serial Port 2
BSC
BSC (Alt.)
Cluster (Primary)
PC Network *
PC Network (Alt.) *
SDLC
Serial Port 1
BSC
BSC (Alt.)
SDLC
Parallel Port 2
Diskette Controller
Fixed Disk and Diskette Drive
Parallel POrt 1
Data Aguisition and Control ***
GPIB *11
Cluster (Secondary)
* The
** The
***
PC Network is jumper selectable.
GPIB Adapter can be set to interrupts 2 through 7.
The Data Acquisition Adapter can be set to interrupts
3 through 7. The default interrupt is 7.
Hardware Interrupt Listing
System Board
1-13
Interrupt Sharing
A definition for standardized hardware design has been
established that enables multiple adapters to share an interrupt
level. This section describes this design and discusses the
programming support required.
Note: Since interrupt routines do not exist in ROM for
protected mode operations, this design is intended to run
only in the microprocessor's real address mode.
Design Overview
Most interrupt-supporting adapters hold the I interrupt request I
line (IRQ) at a low level and then drive the line high to cause an
interrupt. In contrast, the shared-interrupt hardware design
allows IRQ to float high through pull-up resistors on each
adapter. Each adapter on the line may cause an interrupt by
pulsing the line to a low level. The leading edge of the pulse arms
the 8259A Interrupt Controller; the trailing edge signals the
interrupt controller to cause the interrupt. The duration of this
pulse must be between 125 and 1,000 nanoseconds.
The adapters must have an I interrupt I status bit (INT) and a
I interrupt enable I bit (ENA) that can be controlled and
monitored by its software.
Each adapter sharing an interrupt level must monitor the IRQ
line. When any adapter drives the line low, all other adapters on
that line must be prevented from issuing an interrupt request until
they are rearmed.
If an adapter's INT status bit is at a high level when the interrupt
sharing logic is rearmed, the adapter must reissue the interrupt.
This prevents lost interrupts if two adapters issue an interrupt at
the same time and an interrupt handler issues a Global Rearm
after servicing one of the adapters.
1-14
System Board
The following diagram is an example of the shared interrupt
hardware logic.
Q I-------i
INT
ENA
+5
Q
-Q
>CLK
2.2K Ohms
-CLR
System
Clock-~---+-------I
">4---+- IRQ
+5
Q
'------j>CLK
-Q
-CLR
-Global
Rearm----+--------'
Shared Interrupt Logic Diagram
Program Support
During multitasking, tasks are constantly being activated and
deactivated in no particular order. The interrupt-sharing program
support described in this section provides for an orderly means to:
•
Link a task's interrupt handler to a chain of interrupt
handlers
•
Share the interrupt level while the task is active
•
Unlink the interrupt handler from the chain when the task is
deactivated.
Linking to a Chain
Each newly activated task replaces the interrupt vector in low
memory with a pointer to its own interrupt handler. The old
interrupt vector is used as a forward pointer (FPTR) and is stored
at a fixed offset from the new task's interrupt handler.
System Board
1-15
Sharing the Interrupt Level
When the new task's handler gains control as a result of an
interrupt, the handler reads the contents of the adapter's interrupt
status register to determine if its adapter caused the interrupt. If
it did, the handler services the interrupt, disables the interrupts
(eLI), issues a non-specific End of Interrupt (EOI), and then, to
rearm the interrupt hardware, writes to address 02FX, where X
corresponds to interrupt levels 3 through 7, and 9 (IRQ9 is
02F2). A write to address 06FX, where X may be 2 through 7, is
required for interrupt levels 10 through 15, respectively. Each
adapter in the chain decodes the address which results in a Global
Rearm. An adapter is required to decode the least significant 11
bits for this Global Rearm command. The handler then issues a
Return From Interrupt (IRET).
If its adapter did not cause the interrupt, the handler passes
control to the next interrupt handler in the chain.
Unlinking from the Chain
To unlink from the chain, a task must first locate its handler's
position within the chain. By starting at the interrupt vector in
low memory, and using the offset of each handler's FPTR to find
the entry point of each handler, the chain can be methodically
searched until the task finds its own handler. The FPTR of the
previous handler in the chain is replaced by the task's FPTR, thus
removing the handler from the chain.
Error Recovery
Should the unlinking routine discover that the interrupt chain has
been corrupted (an interrupt handler is linked but does not have a
valid SIGNATURE), an unlinking error-recovery procedure must
be in place. Each application can incorporate its own unlinking
error procedure into the unlinking routine. One application may
choose to display an error message requiring the operator to
either correct the situation or power down the system. Another
application may choose an error recovery procedure that restores
the original interrupt vector in low memory, and bypasses the
corrupt portion of the interrupt chain. This error recovery
1-16
System Board
procedure may not be suitable when adapters that are being
serviced by the corrupt handler are actively generating interrupts,
since unserviced interrupts lock up that interrupt level.
ROS Considerations
Adapters with their handlers residing in ROS may choose to
implement chaining by storing the 4 byte FPTR (plus the FIRST
flag if it is sharing interrupt 7 or 15) in on-adapter latches or
ports. Adapter ROS without this feature must first test to see
that it is the first in the chain. If it is the first in the chain, the
adapter can complete the link; if not, the adapter must exit its
routine without linking.
Precautions
The following precautions must be taken when designing
hardware or programs using shared interrupts:
•
Hardware designers should ensure the adapters:
Do not power up with the ENA line active or an
interrupt pending.
Do not generate interrupts that are not serviced by a
handler. Generating interrupts when a handler is not
active to service the adapter causes the interrupt level to
lock up. The design relies on the handler to clear its
adapter's interrupt and issue the Global Rearm.
Can be disabled so that they do not remain active after
their application has terminated.
•
Programmers should:
Ensure that their programs have a short routine that can
be executed with the AUTOEXEC.BAT to disable their
adapter's interrupts. This precaution ensures that the
adapters are deactivated if the user reboots the system.
System Board
1-17
Treat words as words, not bytes. Remember that data is
stored in memory using the Intel format (word 424B is
stored as 4B42).
Interrupt Chaining Structure
ENTRY:
JKP
FPTR
SIGNATURE
SHORT PAST
DO
0
OW
424BH
FLAGS
FIRST
JKP
RES BYTES
DB
EQU
SHORT
DB
-
PAST:
BOH
RESET
DUP 7 (0 )
, Jump
around structure
, Porward Pointer
, Used when unlinking to identify
, compatible interrupt handlers
, Flags
, Flag for being first in chain
, Future
, Actual
expansion
start of code
The interrupt chaining structure is a 16-byte format containing
FPTR, SIGNATURE, and RES BYTES. It begins at the third
byte from the interrupt handler'sentry point. The first
instruction of every handler is a short jump around the structure
to the start of the routine. Since the position of each interrupt
handler's chaining structure is known (except for the handlers on
adapter ROS), the FPTRs can be updated when unlinking.
The FIRST flag is used to determine the handler's position in the
chain when unlinking when sharing interrupts 7 and 15. The
RESET routine, an entry point for the operating system, must
disable the adapter's interrupt and RETURN FAR to the
operating system.
Note: All handlers designed for interrupt sharing must use
424B as the signature to avoid corrupting the chain.
Examples
In the following examples, notice that interrupts are disabled
before control is passed to the next handler on the chain. The
next handler receives control as if a hardware interrupt had
caused it to receive control. Also, notice that the interrupts are
disabled before the non-specific EOI is issued, and not reenabled
in the interrupt handler. This ensures that the IRET is executed
(at which point the flags are restored and the interrupts
1-18
System Board
reenabled) before another interrupt is serviced, protecting the
stack from excessive build up.
Example of an Interrupt Handler
xxxx
Location of your card's interrupt
control/status register
Interrupt bit in your card's interrupt
control status register
ISB
EQU
REARM
EQU
2F7H
Global Rearm location for interrupt
level 7
EQU
67H
Specific EOI for 8259'5 interrupt
level 7
EOI
OCR
EQU
EQU
20H
20H
Non-specific EOI
Location of 8259 operational control
IMR
EQU
21H
register
Location of 8259 interrupt mask
register
MVCSEG
ENTRY
SEGMENT
PARA
ASSUME
PROC
JMP
DO
CS:MYCSEG,DS:DSEG
FAR
SHORT PAST
FPTR
SIGNATURE OW
FLAGS
FIRST
JMP
DB
EQU
SHORT
RES_BYTES· DB
PAST:
o
424BH
PUSH
TEST
JNZ
TEST
JNZ
POP
CLI
JMP
Forward POinter
Used when unlinking to identify
compatible interrupt handlers
Flags
80H
RESET
DUP 7 (0)
STI
MOV
IN
Entry point of handler
DX,YOUR_CARD
AL,DX
AL,ISB
SERVICE
CS:FLAGS,FIRST
EXIT
Future expansion
Actual start of handler code
Save needed registers
Select your status register
Read the status register
Your card caused the interrupt?
yes. branch to service logic
Are we the first ones in?
If yes, branch for EOI and Rearm
Restore registers
Disable interrupts
DWORD PTR CS:FPTR
SERVICE:
Pass control to next guy on chain
Service the interrupt
EXIT:
CLI
MOV
OUT
MOV
OUT
POP
IRET
Disable the interrupts
AL,EOI
aeR,AL
DX,REARM
DX,AL
Restore registers
RESET:
Disable your card
Return FAR to operating system
RET
ENTRY
Issue non-specific EOI to 8259
Rearm the cards
ENOP
MYCSEG
END
ENDS
ENTRY
System Board
1-19
Linking Code Example
PUSH
ES
eLI
~
Disable interrupts
Set forward pointer to value of interrupt vector in low memory
ASSUME
CS:CODESEG,DS:CODESEG
PUSH
ES
MOV
AX,350FH
DOS get interrupt vector
INT
21H
MOV
SI,OFFSET CS:FPTR
Get offset of your forward pointer
in an indexable register
MOV
MOV
CMP
JNZ
MOV
SETVECTR: POP
PUSH
cs:
151] ,EX
CS: ISI+2) ,ES
ES:BYTE PTR{BX],CFH
store the old interrupt vector
in your forward pointer for chaining
Test for IRET
SETVECTR
CS:FLAGS,FIRST
Set up first in chain flag
ES
DS
; Make interrupt vector in low memory pOint to your handler
MOV
DX,OFFSET ENTRY
Make interrupt vector point to your handler
If DS not = CS, get it
OS, AX
and put it in DS
AX,2S0FH
DOS set interrupt vector
INT
21H
POP
DS
Unmask (enable) interrupts for your level
IN
AL, IMR
Read interrupt mask register
$+2
JMP
10 delay
AND
AL,07FH
Unmask interrupt level 7
OUT
IMR,AL
write new interrupt mask
MOV
AL,SPC_EOI
Issue specific EOI for level 7
$+Z
JMP
to allow pending level 7 interrupts
(if any) to be serviced
OUT
OeR,AL
STI
Enable interrupts
POP
ES
MOV
AX, SEG ENTRY
MOV
MOV
1-20
System Board
Unlinking Code Example
PUSH
PUSH
eLI
MOV
INT
MOV
DS
ES
AX,350FH
21H
CX,ES
Are we the first handler in the chain?
MOV
AX,eS
CMP
BX,OFFSET ENTRY
JNE
CMP
UNCHAIN_A
AX,CX
Disable interrupts
DOS qet interrupt vector
BS:BX points to first of chain
Pickup segment part of interrupt vector
Get code seq into comparable register
Interrupt vector in low memory
pointing to your handler's offset?
No, branch
vector pointing to your
handler's segment?
No, branch
JNE
Set interrupt vector in low memory to point to the handler
pointed to by your pOinter
PUSH
MOV
MOV
MOV
INT
POP
JMP
UNCHAIN_A:
CMP
DS
DX,WORD PTR CS:FPTR
DS,WORD PTR CS FPTR[2[
AX,2S0FH
~ DOS set interrupt vector
21H
DS
UNCHAIN_X
BX = FPTR offset, ES
FPTR segment, ex = CS
ES:[BX+6),4B42H
Is handler using the appropriate
JNE
LDS
CMP
exception
JNE
MOV
CMP
UNCHAIN_B
CX,DS
AX,CX
SI,ES: [BX+2)
51,OFFSET ENTRY
JNE
conventions (is SIGNATURE present in
the interrupt chaining structure)?
No, invo~e error exception handler
Get FPTR's segment and offset
Is this forward pointer pointing to
your hand~er's offset?
~o, branch
Kove to compare
Is this forward pointer pointing to
your handler's segment?
NO, branch
Located your handler in the chain
MOV
AX,WORD PTR CS:FPTR
MOV
MOV
MOV
MOV
AND
OR
JMP
UNCHAIN_B: MOV
PUSH
PUSH
JMP
UNCHAIN_X: STI
POP
POP
Get your FPTR's offset
Replace offset of FPTR of handler
that points to you
AX,WORD PTR CS:FPTR[2] J Get your FPTR's segment
ES: [BX+4 J , AX
Replace segment of FPTR of handler
that points to you
AL,CS:FLAGS
Get your flags
AL,FIRST
Isolate fIRST flag
ES: [BX + 6),AL
Set your first flag into prior routine
ES:[BX+2[,AX
UNCHAIN_X
BX,SI
DS
ES
UNCHAIN_A
Kove new offset to BX
Examine next handler in chain
Enable interrupts
ES
DS
System Board
1-21
System Timers
The system has three programmable timer/counters, Channels 0
through 2. They are controlled by an Intel 8254-2
Timer/Counter chip, and are defined as follows:
Channel 0
System Timer
GATE 0
CLKINO
CLKOUTO
Tied on
1.190 MHz OSC
8259AIRQ 0
Channell
Refresh Request Generator
GATE 1
CLKIN 1
CLKOUT 1
Tied on
1.190 MHz OSC
Request refresh cycle
Note: Channel 1 is programmed as a rate generator to
produce a 15-microsecond period signal.
Channel 2
Tone Generation for Speaker
GATE 2
CLKIN2
CLKOUT2
Controlled by bit 0 of port hex 61, PPI bit
1.190 MHz OSC
Used to drive the speaker
The 8254-2 Timer/Counter is a programmable interval
timer/counter that system programs treat as an arrangement of
four external I/O ports. Three ports are treated as counters; the
fourth is a control register for mode programming. The following
is a system-timer block diagram.
1-22
System Board
+5 Vdc
-Refresh
Refres h Reques t
Q
Clock
Clear
D
LSystem B u s _
Gate 0
+5 Vdc
I/O Add ress
Hex 006 1 Port Bi t 0
Clock In 0
Gate I
>--
Clock In I
~
Gate 2
0---
Clock In 2
IRQ 0
Clock Out 0
Clock Out 1
-
Clock Out 2
I/O Add ress
Hex 006 1
Port Bi t 1
PC LK
(2 .38MHz)
I Driver I
I I
AND
Divide
by 2
Low
Pass
F i Iter
r---+
To Speaker
II
System-Timer Block Diagram
System Clock
The 82284 System Clock Generator is driven by a 12-MHz
crystal. Its output I clock I signal (CLK) is the input to the system
microprocessor, the coprocessor, and I/O channel.
ROM Subsystem
The system board's ROM subsystem consists of two 32K by 8-bit
ROM/EPROM modules in a 32K-by-16-bit arrangement. The
code for odd and even addresses resides in separate modules.
ROM is assigned at the top of the first and last 1M address space
(OFOOOO and FFOOOO). ROM is not parity-checked. Its access
time is 150 nanoseconds and its cycle time is 230 nanoseconds.
System Board
1-23
RAM Subsystem
The system board's RAM subsystem starts at address 000000 of
the 16M address space. It is 512K of 128K-by-1-bit RAM
modules (type 1 system board) or 512K of 256K-by-1-bit RAM
modules (type 2 system board). Memory access time is 150
nanoseconds and the cycle time is 275 nanoseconds.
Memory refresh requests one memory cycle every 15
microseconds through the timer/counter (channell). The RAM
initialization program performs the following functions:
•
Initializes channell of the timer/counter to the rate
generation mode, with a period of 15 microseconds.
•
Performs a memory write operation to any memory location.
Note: The memory must be accessed or refreshed eight
times before it can be used.
I/O Channel
The I/O channel supports:
•
I/O address space hex 100 to hex 3FF
•
24-bit memory addresses (16M)
•
Selection of data accesses (either 8- or 16-bit)
•
Interrupts
•
DMA channels
•
I/O wait-state generation
1-24
System Board
•
Open-bus structure (allowing mUltiple microprocessors to
share the system's resources, including memory)
•
Refresh of system memory from channel microprocessors.
Connectors
The following figure shows the location and the numbering of the
I/O channel connectors. These connectors consist of six 36-pin
and eight 62-pin edge connector sockets.
Note: The 36-pin connector is not present in two positions
on the I/O channel. These positions can support only 62-pin
I/O bus adapters.
I/O CHANNEL
CONNECTORS
r ----------~~,--------~
REAR PANEL
o
"""""
r
I/O Channel Connector Location
System Board
1-25
The following figure shows the pin numbering for I/O channel
connectors 11 through J8.
Rear Panel
B1
Al
Bl0
Al0
B20
A20
B31
A31
Component Side
I/O Channel Pin Numbering (J1-J8)
1-26
System Board
The following figure shows the pin numbering for I/O channel
connectors J1 0 through J14 and J16.
Rear Panel
01
C1
010
C10
018
c18
Component Side
I/O Channel Pin Numbering (J10-J14 and J16)
System Board
1-27
The following figures summarize pin assignments for the I/O
channel connectors.
I/O Pin
Signal Name
I/O
Al
A2
A3
A4
A5
A6
A7
A8
A9
AIO
All
Al2
Al3
Al4
Al5
Al6
Al7
Al8
Al9
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
-I/O CH CK
S07
S06
S05
So4
S03
S02
SOl
SOO
-I/O CH ROY
AEN
SAl9
SAl8
SAl7
SAl6
SAl5
SAl4
SAl3
SAl2
SAIl
SAIO
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SAl
SAO
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
I/O Channel (A-Side, J1 through J8)
1-28
System Board
I/O Pin
Signal Name
I/O
B1
B2
B3
B4
B5
B6
B7
B8
B9
Bl0
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
GND
RESET DRV
+5 Vdc
IRQ 9
-5 Vdc
DRQ2
-12 Vdc
OWS
+12 Vdc
GND
-SMEMW
-SMEMR
-lOW
-lOR
-DACK3
DRQ3
-DACKI
DRQl
-REFRESH
ClK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
-DACK2
T/C
BALE
+5Vdc
OSC
GND
Ground
0
Power
I
Power
I
Power
I
Power
Ground
0
0
I/O
I/O
0
I
0
I
I/O
0
I
I
I
I
I
0
0
0
Power
0
Ground
I/O Channel (B-Side, J1 through J8)
System Board
1-29
I/O Pin
Signa1 Name
I/O
C1
C2
C3
C4
C5
C6
C7
c8
C9
Cl0
C11
C12
C13
C14
C15
C16
C17
C18
SBHE
LA23
LA22
LA21
LA20
LA19
LA18
LA17
-MEMR
-MEMW
SD08
SD09
SD10
SDll
SD12
SD 13
SD14
SD15
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
/0
I/O Channel (C-Side, J10 through J14 and 16)
I/O Pin
Signa1 Name
I/O
D1
D2
D3
D4
D5
D6
D7
D8
D9
Dl0
D11
D12
D13
D14
D15
D16
D17
D18
-MEM CS16
-I/O CS16
IRQ10
IRQll
IRQ12
IRQ15
IRQ14
-DACKO
DRQO
-DACK5
DRQ5
-DACK6
DRQ6
-DACK7
DRQ7
+5 Vdc
-MASTER
GND
I
I
I
I
I
I
I
0
I
0
I
0
I
0
I
POWER
I
GROUND
I/O Channel (D-Side, J10 through J14 and 16)
1-30
System Board
110 Channel Signal Description
The following is a description of the system board's I/O channel
signals. All signal lines are TTL compatible. I/O adapters should
be designed with a maximum of two low-power Shottky (LS)
loads per line.
SAO through SA19 (I/O)
Address signals 0 through 19 are used to address memory and
I/O devices within the system. These 20 address lines, in
addition to LA17 through LA23 , allow access of up to 16M of
memory. SAO through SA19 are gated on the system bus when
I buffered address latch enable I signal (BALE) is high and are
latched on the falling edge of BALE. These signals are generated
by the microprocessor or DMA Controller. They also may be
driven by other microprocessors or DMA controllers that reside
on the I/O channel.
LA17 through LA23 (I/O)
These signals (unlatched) are used to address memory and I/O
devices within the system. They give the system up to 16M of
address ability. These signals are valid when BALE is high. LA17
through LA23 are not latched during microprocessor cycles and
therefore do not stay valid for the whole cycle. Their purpose is
to generate memory decodes for 16-bit, 1 wait-state, memory
cycles. These decodes should be latched by I/O adapters on the
falling edge of BALE.
These signals also may be driven by other microprocessors or
DMA controllers that reside on the I/O channel.
eLK (0)
This is the 6-MHz system clock signal. It is a synchronous
microprocessor cycle clock with a cycle time of 167 nanoseconds.
The clock has a 50% duty cycle. This signal should be used only
I
I
System Board
1-31
for synchronization. It is not intended for uses requiring a fixed
frequency.
RESET DRV (0)
The 'reset drive' signal is used to reset or initialize system logic
at power-up time or during a low voltage condition. This signal is
active high.
SDO through SD15 (I/O)
These signals provide bus bits 0 through 15 for the
microprocessor, memory, and I/O devices. DO is the
least-significant bit and DIS is the most-significant bit. A1l8-bit
devices on the I/O channel should use DO through D7 for
communications to the microprocessor. The 16-bit devices will
use DO through DIS. To support 8-bit devices, the data on D8
through D15 will be gated to DO through D7 during 8-bit
transfers to these devices; 16-bit microprocessor transfers to 8-bit
devices will be converted to two 8-bit transfers.
BALE (0) (buffered)
The 'buffered address latch enable' signal is provided by the
82288 Bus Controller and is used on the system board to latch
valid addresses and memory decodes from the microprocessor. It
is available to the I/O channel as an indicator of a valid
microprocessor or DMA address (when used with 'address
enable' signal, AEN). Microprocessor addresses SAO through
SA19 are latched with the falling edge of BALE. BALE is forced
high (active) during PMA cycles.
-I/O
cn CK (I)
The '-I/O channel check' signal provides the system board with
parity (error) information about memory or devices on the I/O
channel. When this signal is active (low), it indicates a
non-correctable system error.
1-32
System Board
I/O
cn RDY (I)
The '1/0 channel ready signal is pulled low (not ready) by a
memory or I/O device to lengthen I/O or memory cycles. Any
slow device using this line should drive it low immediately upon
detecting its valid address and a Read or Write command.
Machine cycles are extended by an integral number of clock
cycles (167 nanoseconds). This signal should be held low for no
more than 2.5 microseconds.
I
IRQ3-IRQ7, IRQ9-IRQ12, IRQ14, and IRQ15 (I)
Interrupt requests 3 through 7, 9 through 12, 14, and 15 are used
to signal the microprocessor that an I/O device needs attention.
The interrupt requests are prioritized, with IRQ9 through IRQI2,
IRQI4, and IRQ15 having the highest priority (IRQ9 is the
highest), and IRQ3 through IRQ7 having the lowest priority
(IRQ7 is the lowest). An interrupt request is generated when an
IRQ line is raised from low to high. The line is high until the
microprocessor acknowledges the interrupt request (Interrupt
Service routine).
Note: Interrupt 13 is used on the system board and is not
available on the I/O channel. IRQ 8 is used for the real-time
clock.
-lOR (I/O)
The I -I/O read I signal instructs an I/O device to drive its data
onto the data bus. This signal may be driven by the system
microprocessor or DMA controller, or by a microprocessor or
DMA controller resident on the I/O channel. This signal is active
low.
-lOW (I/O)
The I -I/O write I signal instructs an I/O device to read the data
off the data bus. It may be driven by any microprocessor or
DMA controller in the system. This signal is active low.
System Board
1-33
-SMEMR (0) -MEMR (I/O)
These signals instruct the memory devices to drive data onto the
data bus. -SMEMR is active only when the memory decode is
within the low 1M of memory space. -MEMR is active on all
memory read cycles. -MEMR may be driven by any
microprocessor or DMA controller in the system. -SMEMR is
derived from -MEMR and the decode of the low 1M of memory.
When a microprocessor on the I/O channel wishes to drive
-MEMR, it must have the address lines valid on the bus for one
clock cycle before driving -MEMR active. Both signals are active
low.
-SMEMW (0) -MEMW (I/O)
These signals instruct the memory devices to store the data
present on the data bus. -SMEMW is active only when the
memory decode is within the low 1M of the memory space.
-MEMW is active on all memory write cycles. -MEMW may be
driven by any microprocessor or DMA controller in the system.
-SMEMW is derived from -MEMW and the decode of the low
1M of memory. When a microprocessor on the I/O channel
wishes to drive -MEMW, it must have the address lines valid on
the bus for one clock cycle before driving -MEMW active. Both
signals are active low.
DRQO-DRQ3 and DRQ5-DRQ7 (I)
The I DMA request I signals 0 through 3 and 5 through 7 are
asynchronous channel requests used by peripheral devices and a
microprocessor to gain DMA service (or control of the system).
They are prioritized, with DRQO having the highest priority and
DRQ7 the lowest. A request is generated by bringing a DRQ line
to an active (high) level. A DRQ line is held high until the
corresponding I DMA acknowledge I (DACK) line goes active.
DRQO through DRQ3 perform 8-bit DMA transfers; DRQ5
through DRQ7 perform 16-bit transfers. DRQ4 is used on the
system board and is not available on the 110 channel.
1-34
System Board
-DACKO to -DACK3 and -DACKS to -DACK7 (0)
-DMA acknowledge 0 through 3 and 5 through 7 are used to
acknowledge DMA requests. These signals are active low.
AEN (0)
The I address enable I signal is used to degate the microprocessor
and other devices from the I/O channel to allow DMA transfers
to take place. When this line is active, the DMA controller has
control of the address bus, the data-bus Read command lines
(memory and I/O), and the Write command lines (memory and
I/O). This signal is active high.
-REFRESH (I/O)
This signal is used to indicate a refresh cycle and can be driven by
a microprocessor on the I/O channel. This signal is active low.
T/C (0)
The I terminal count I signal provides a high pulse when the
terminal count for any DMA channel is reached.
SBHE (I/O)
The I system bus high enable I signal indicates a transfer of data
on the upper byte of the data bus, SD8 through SD15.
Sixteen-bit devices use SBHE to condition data bus buffers tied to
SD8 through SD15. This signal is active high.
-MASTER (I)
This signal is used with a DRQ line to gain control of the system.
A processor or DMA controller on the I/O channel may issue a
DRQ to a DMA channel in cascade mode and receive a -DACK.
Upon receiving the -DACK, a microprocessor may pull
System Board
1-35
-MASTER active (low), which will allow it to control the system
address, data, and control lines (a condition known as tri-state).
After -MASTER is low, the microprocessor must wait one clock
cycle before driving the address and data lines, and two clock
cycles before issuing a Read or Write command. If this signal is
held low for more than 15 microseconds, the system memory may
be lost because of a lack of refresh.
-MEM CS16 (I)
The I-memory 16-bit chip select I signal indicates to the system
that the present data transfer is a 1 wait-state, 16-bit, memory
cycle. It must be derived from the decode of LA17 through
LA23. -MEM CS16 is active low and should be driven with an
open collector or tri-state driver capable of sinking 20 mAo
-I/O CS16 (I)
The I-I/O 16-bit chip select I signal indicates to the system that
the present data transfer is a 16-bit, 1 wait-state, I/O cycle. It is
derived from an address decode. -I/O CS16 is active low and
should be driven with an open collector or tri-state driver capable
of sinking 20 rnA.
OSC (0)
The Ioscillator I signal is a high-speed clock with a
70-nanosecond period (14.31818 MHz). This signal is not
synchronous with the system clock. It has a 50% duty cycle.
OWS (I)
The Izero wait state I signal tells the microprocessor that it can
complete the present bus cycle without inserting any additional
wait cycles. In order to run a memory cycle to a 16-bit device
without wait cycles, OWS is derived from an address decode gated
with a Read or Write command. In order to run a memory cycle
to an 8-bit device with a minimum of two wait states, OWS should
1-36
System Board
be driven active one clock cycle after the Read or Write command
is active, and gated with the address decode for the device.
Memory Read and Write commands to an 8-bit device are active
on the falling edge of eLK. OWS is active low and should be
driven with an open collector or tri-state driver capable of sinking
20 rnA.
The following figure is an I/O address map.
Hex Range
DOO-OIF
OZO-03F
040-05F
06o-06F
070-07F
080-09F
OAO-OBF
OCO-ODF
OFO
OFI
OF8-0FF
Device
DMA controller 1, 8237A-5
Interru~t controller 1,8259A, Master
Timer
254-2
8042 (Keyboard)
Real-time clock, NMI (non-maskable interrupt) mask
DMA page register , 74LS612
Interrupt Controller 2, 8259A
DMA controller 2, 8237A-5
Clear Math Coprocessor Busy
Reset Math Coprocessor
Math Coprocessor
Note: I/O Addresses, hex 000 to OFF, are reserved for the
system board I/O. Hex 100 to 3FF are available on the I/O
channel.
I/O Address Map (Part 1 of 2)
System Board
1-37
Hex Range
1FO-1F8
200-207
20C-20D
21F
278-27F
2BO-2DF
2E1
2E2 & 2E3
2F8-2FF
300-31F
360-363
364-367
368-36B
36C-36F
378-37F
380-38F
390-393
3AO-3AF
3BO-3BF
3CO-3CF
3DO-3DF
3FO-3F7
3F8-3FF
6E2 & 6E3
790-793
AE2 & AE3
B90-B93
EE2 & EE3
1390-1393
22E1
2390-2393
42E1
62E1
82E1
A2E1
C2E1
E2E1
Device
Fixed Disk
Game I/O
Reserved
Reserved
Parallel printer port 2
Alternate Enhanced Graphics Adapter
GPIB (Adapter 0)
Data Acquisition (Adapter 0)
Serial port 2
Prototype card
PC Network (low address)
Reserved
PC Network (high address)
Reserved
Parallel printer port 1
SDLC, bisynchronous 2
Cluster
Bisynchronous 1
Monochrome Display and Printer Adapter
Enhanced Graphics Adapter
Color/Graphics Monitor Adapter
Diskette controller
Serial port 1
Data Acquisition (Adapter 1)
Cluster (Adapter 1)
Data Acquisition (Adapter 2)
Cluster (Adapter 2)
Data Acquisition (Adapter 3)
Cluster (Adapter 3)
GP I B (Adapter 1)
Cluster (Adapter 4)
GPIB (Adapter 2)
GPIB (Adapter 3)
GPIB (Adapter 4)
GPIB (Adapter 5)
GPIB (Adapter 6)
GPIB (Adapter 7)
Note: I/O Addresses, hex 000 to OFF, are reserved for the
system board I/O. Hex 100 to 3FF are available on the I/O
channe I.
I/O Address Map (Part 2 of 2)
NMI and Coprocessor Controls
At power-on time, the non-maskable interrupt (NMI) into the
80286 is masked off. The mask bit can be set and reset with
system programs as follows:
1-38
System Board
Mask On
Write to I/O address hex 070, with data bit 7
equal to a logic O.
Mask Off
Write to I/O address hex 070, with data bit 7
equal to a logic 1.
Note: At the end of POST, the system sets the NMI mask
on (NMI enabled).
The following is a description of the Math Coprocessor controls.
OFO
An 8-bit Out command to port FO will clear the latched
Math Coprocessor -busy signal. The -busy signal will
be latched if the coprocessor asserts its I -error I signal
while it is busy. The data output should be zero.
I
OF1
I
I
I
An 8-bit Out command to port Fl will reset the Math
Coprocessor. The data output should be zero.
I/O address hex 080 is used as a diagnostic-checkpoint port or
register. This port corresponds to a read/write register in the
DMA page register (74LS612).
The I -I/O channel check I signal (-I/O CH CK) is used to report
non-correctable errors on RAM adapters on the I/O channel.
This check will create an NMI if the NMI is enabled. At
power-on time, the NMI is masked off and -I/O CH CK is
disabled. Follow these steps when enabling -I/O CH CK and the
NMI.
1.
Write data in all I/O RAM-adapter memory locations; this
will establish good parity at all locations.
2.
Enable -I/O CH CK.
3.
Enable the NMI.
Note:
All three of these functions are performed by POST.
When a check occurs, an interrupt (NMI) will result. Read the
status bits to determine the source of the NMI (see the figure,
"1/ a Address Map", on page 1-37). To determine the location
of the failing adapter, write to any memory location within a given
System Board
1-39
adapter. If the parity check was from that adapter, -I/O CH CK
will be reset to inactive.
Other Circuits
Speaker
The system unit has a 2-1/4 inch permanent-magnet speaker,
which can be driven from:
•
•
•
The I/O-port output bit
The timer/counter's CLK OUT 2
Both of the above
RAM Jumpers
The system board has a 3-pin, Berg-strip connector (J18).
Starting at the front of the system, the pins are numbered 1
through 3. Jumper placement across these pins determines how
much system board RAM is enabled. Pin assignments follow.
Pin
Assignments
1
2
No Connection
- RAM SEL
Ground
3
RAM Jumper Connector (J18)
1-40
System Board
The following shows how the jumpers affect RAM.
Jumper Positions
1 and 2
2 and 3
Function
Enable 2nd 256K of system board RAM
Disable 2nd 256K of system board RAM
RAM Jumper
Note: The normal mode is the enable mode. The other
mode permits the additional RAM to reside on adapters
plugged into the I/O bus.
Display Switch
Set the slide switch on the system board to select the primary
display adapter. Its positions are assigned as follows:
On (toward the front of the system unit): The primary display
is attached to the Color/Graphics Monitor Adapter or
Professional Graphics Controller.
Off (toward the rear of the system unit): The primary display
is attached to the Monochrome Display and Printer Adapter.
The switch may be set to either position if the primary display is
attached to an Enhanced Graphics Adapter.
Note: The primary display is activated when the system is
powered on.
Variable Capacitor
The system board has a variable capacitor. Its purpose is to
adjust the 14.31818 MHz oscillator signal (OSC), used to obtain
the color-burst signal required for color televisions.
System Board
1-41
Keyboard Controller
The keyboard controller is a single-chip microcomputer (Intel
8042) that is programmed to support the keyboard serial
interface. The keyboard controller receives serial data from the
keyboard, checks the parity of the data, translates scan codes, and
presents the data to the system as a byte of data in its output
buffer. The controller can interrupt the system when data is
placed in its output buffer, or wait for the system to poll its status
register to determine when data is available.
Data is sent the keyboard by first polling the controller's status
register to determine when the input buffer is ready to accept data
and then writing to the input buffer. Each byte of data is sent to
the keyboard serially with an odd parity bit automatically
inserted. The keyboard is required to acknowledge all data
transmissions, another byte of data should not be sent to the
keyboard until acknowledgement is received for the previous byte
sent. The output-buffer-full interrupt may be used for both send
and receive routines.
Keyboard Controller Initialization
At power on, the keyboard controller set the system flag bit to O.
After a power-on reset or the execution of the Self Test
command, the keyboard controller disables the keyboard interface
by forcing the 'keyboard clock' line low. The keyboard
interface parameters are specified at this time by writing to
locations within the 8042 RAM. The keyboard-inhibit function is
then disabled by setting the inhibit-override bit in the command
byte. A hex 55 is then placed in the output buffer if no errors are
detected during the self test. Any value other than hex 55
indicates that the 8042 is defective. The keyboard interface is
now enabled by lifting the 'keyboard data' and 'keyboard clock'
signal lines, and the system flag is set to 1. The keyboard
controller is then ready to accept commands from the system unit
microprocessor or receive keyboard data.
1-42
System Board
Receiving Data from the Keyboard
The keyboard sends data in a serial format using an 11-bit frame.
The first bit is a start bit, and is followed by eight data bits, an
odd parity bit, and a stop bit. Data sent is synchronized by a
clock supplied by the keyboard. At the end of a transmission, the
keyboard controller disables the interface until the system accepts
the byte. If the byte of data is received with a parity error, a
Resend command is automatically sent to the keyboard. If the
keyboard controller is unable to receive the data correctly after a
set number of retries, a hex FF is placed in its output buffer, and
the parity bit in the status register is set to 1, indicating a receive
parity error. The keyboard controller will also time a byte of data
from the keyboard. If a keyboard transmission does not end
within two milliseconds, a hex FF is placed in the keyboard
controller's output buffer, and the receive time-out bit in the
status register is set. No retries will be attempted on a receive
time-out error.
Note: When a receive error occurs in the default mode (bits
5,6, and 7 of the command byte set to 0), hex 00 is placed in
the output buffer instead of hex FF. See "Commands (I/O
Address Hex 64)" on page 1-51 for a detailed description of
the command byte.
Scan Code Translation
Scan codes received from the keyboard are converted by the
keyboard controller before being placed into the controller's
output buffer. The following figure shows the keyboard layout.
Each key position is numbered for reference.
System Board
1-43
Keyboard
1-44
System Board
The following figure is the scan-code translation table.
System
Scan Code
Keyboard
Scan Code
01
02
03
04
05
06
07
08
09
OA
OB
OC
00
OE
OF
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
10
1E
1F
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
20
2E
2F
76
16
1E
26
25
2E
36
30
3E
46
45
4E
55
66
00
15
10
24
20
2C
35
3C
43
44
40
54
5B
5A
14
1C
1B
23
2B
34
33
3B
42
4B
4c
52
OE
12
50
1A
22
21
2A
Key
90
2
3
4
5
6
7
8
9
10
11
12
13
15
16
17
18
19
20
21
22
23
24
25
26
27
28
43
30
31
32
33
34
35
36
37
38
39
40
41
1
44
14
46
47
48
49
Scan-Code Translation Table (Part 1 of 2)
System Board
1-45
System
Scan Code
Keyboard
Scan Code
Key
30
31
32
33
34
35
36
38
39
3A
3B
3C
30
3E
3F
40
41
42
43
44
45
46
47
48
49
4A
4B
4c
40
4E
4F
50
51
52
53
54
32
31
3A
41
49
4A
59
11
29
58
05
06
04
OC
03
OB
02 or 83
OA
01
09
50
51
52
53
54
55
57
58
61
64
70
65
71
66
77
7E
6C
75
70
7B
6B
73
74
79
69
72
7A
70
71
7F or 84
Scan-Code Translation Table (Part 2 of 2)
1-46
System Board
72
67
73
68
74
69
95
100
91
96
101
107
92
97
102
108
93
98
103
99
104
105
The following scan codes are reserved.
Key
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
System
Scan Code
Keyboard
Scan Code
55
56
57
58
59
5A
5B
5C
50
5E
5F
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
60
6E
6F
70
71
60
61
78
07
OF
17
1F
27
2F
37
3F
47
4F
56
5E
08
10
18
20
28
30
38
40
48
50
57
6F
13
19
39
51
53
5C
5F
62
63
64
65
67
68
6A
60
6E
72
73
74
75
76
77
78
79
7A
7B
7C
70
7E
7F
Reserved Scan-Code Translation Table
System Board
1-47
Sending Data to the Keyboard
The keyboard sends data in the same serial format used to receive
data from the keyboard. A parity bit is automatically inserted by
the keyboard controller. If the keyboard does not start clocking
the data from the keyboard controller within 15 milliseconds, or
complete that clocking within 2 milliseconds, a hex FE is placed
in the keyboard controller's output buffer, and the transmit
time-out error bit is set in the status register.
The keyboard is required to respond to all transmissions. The
keyboard responds to any valid command and parameter, other
than Echo and Resend, with an Acknowledge (ACK) response,
hex FA. If the response contains a parity error, the keyboard
controller places a hex FE in its output buffer, and the transmit
time-out and parity error bits are set in the status register. The
keyboard controller is programmed to set a 25-millisecond time
limit for the keyboard to respond. If this time limit is exceeded,
the keyboard controller places a hex FE in its output buffer and
sets the transmit time-out and receive time-out error bits in the
status register. No retries are attempted by the keyboard
controller for any transmission error.
Inhibit
The keyboard interface may be inhibited by setting input port bit
7 (keyboard inhibit switch) to O. All transmissions to the
keyboard will be allowed regardless of the state of this bit. The
keyboard controller tests data received from the keyboard to
determine if the byte received is a command response or a scan
code. If the byte is a com.mand response, it is placed in the
keyboard controller's output buffer. If the byte is a scan code, it
is ignored.
Keyboard Controller System Interface
The keyboard controller communicates with the system through a
status register, an output buffer, and an input buffer. The
following figure is a block diagram of the keyboard interface.
1-48
System Board
.--- RAM on the system board
N .--- Manufacturing mode
p .--- Display type
Input
Buffer
r
.
System
Data
Bus
~
U
T .--- Keyboard Inhibited
~ == ~~~~e~2~eset
IRQ
1---+ u -
+-jr-,-=======
Output
Buffer
1
T -
Keyboard Clock--r-+
TPu
Keyboard Data
-
-~2_K_R~_~_8~r+-_~ITTI+-_ _ _ _ _ _~
Keyboard Controller Interface Block Diagram
Status Register
The status register is an 8-bit read-only register at I/O address
hex 64. It has information about the state of the keyboard
controller (8042) and interface. It may be read at any time.
Status-Register Bit Definition
Bit 7
Parity Error-A 0 indicates the last byte of data received
from the keyboard had odd parity. A 1 indicates the last
byte had even parity. The keyboard should send data
with odd parity.
Bit 6
Receive Time-Out-A 1 indicates that a transmission was
started by the keyboard but did not finish within the
programmed receive time-out delay.
Bit S
Transmit Time-Out-A 1 indicates that a transmission
started by the keyboard controller was not properly
completed. If the transmit byte was not clocked out
within the specified time limit, this will be the only error.
System Board
1-49
If the transmit byte was clocked out but a response was
not received within the programmed time limit, the
transmit time-out and receive time-out error bits are set
to 1. If the transmit byte was clocked out but the
response was received with a parity error, the transmit
time-out and parity error bits are set to 1.
Bit 4
Inhibit Switch-This bit is updated whenever data is
placed in the keyboard controller's output buffer. It
reflects the state of the keyboard-inhibit switch. A 0
indicates the keyboard is inhibited.
Bit 3
Command/Data-The keyboard controller's input buffer
may be addressed as either I/O address hex 60 or 64.
Address hex 60 is defined as the data port, and address
hex 64 is defined as the command port. Writing to
address hex 64 sets this bit to 1; writing to address hex 60
sets this bit to O. The controller uses this bit to determine
if the byte in its input buffer should be interpreted as a
command byte or a data byte.
Bit 2
System Flag-This bit is monitored by the system during
the reset routine. If it is a 0, the reset was caused by a
power on. The controller sets this bit to 0 at power on
and it is set to 1 after a successful self test. This bit can
be changed by writing to the system flag bit in the
command byte (hex 64).
Bit 1
Input Buffer Full-A 0 indicates that the keyboard
controller's input buffer (I/O address hex 60 or 64) is
empty. A 1 indicates that data has been written into the
buffer but the controller has not read the data. When the
controller reads the input buffer, this bit will return to O.
Bit 0
Output Buffer Full-A 0 indicates that the keyboard
controller's output buffer has no data. A 1 indicates that
the controller has placed data into its output buffer but
the system has not yet read the data. When the system
reads the output buffer (I/O address hex 60), this bit will
return to a O.
1-50
System Board
Output Buffer
The output buffer is an 8-bit read-only register at I/O address
hex 60. The keyboard controller uses the output buffer to send
scan codes received from the keyboard, and data bytes requested
by command, to the system. The output buffer should be read
only when the output-buffer-full bit in the status register is 1.
Input Buffer
The input buffer is an 8-bit write-only register at I/O address hex
60 or 64. Writing to address hex 60 sets a flag, which indicates a
data write; writing to address hex 64 sets a flag, indicating a
command write. Data written to I/O address hex 60 is sent to the
keyboard, unless the keyboard controller is expecting a data byte
following a controller command. Data should be written to the
controller's input buffer only if the input buffer's full bit in the
status register is O. The following are valid keyboard controller
commands.
Commands (I/O Address Hex 64)
20
Read Keyboard Controller's Command Byte-The
controller sends its current command byte to its output
buffer.
60
Write Keyboard Controller's Command Byte-The next
byte of data written to I/O address hex 60 is placed in
the controller's command byte. Bit definitions of the
command byte are as follows:
Bit 7
Reserved-Should be written as a O.
Bit 6
IBM Personal Computer Compatibility
Mode-Writing a 1 to this bit causes the
controller to convert the scan codes received
from the keyboard to those used by the IBM
Personal Computer. This includes converting a
2-byte break sequence to the 1-byte IBM
Personal Computer format.
System Board
1-51
Bit 5
IBM Personal Computer Mode-Writing a 1 to
this bit programs the keyboard to support the
IBM Personal Computer keyboard interface. In
this mode the controller does not check parity or
convert scan codes.
Bit 4
Disable Keyboard-Writing a 1 to this bit
disables the keyboard interface by driving the
I clock I line low. Data is not sent or received.
Bit 3
Inhibit Override-Writing a 1 to this bit disables
the keyboard inhibit function.
Bit 2
System Flag-The value written to this bit is
placed in the system flag bit of the controller's
status register.
Bit 1
Reserved-Should be written as a O.
Bit 0
Enable Output-Buffer-Full Interrupt-Writing a
1 to this bit causes the controller to generate an
interrupt when it places data into its output
buffer.
AA
Self-Test-This commands the controller to perform
internal diagnostic tests. A hex 55 is placed in the output
buffer if no errors are detected.
AB
Interface Test-This commands the controller to test the
I keyboard clock I and I keyboard data I lines.
The test
result is placed in the output buffer as follows:
00
01
02
03
04
1-52
No error detected.
The I keyboard clock I line is stuck low.
The keyboard clock line is stuck high.
The keyboard data line is stuck low.
The I keyboard data I line is stuck high.
I
I
System Board
I
I
AC
Diagnostic Dump-Sends 16 bytes of the controller's
RAM, the current state of the input port, the current
state of the output port, and the controller's program
status word to the system. All items are sent in scan-code
format.
AD
Disable Keyboard Feature-This command sets bit 4 of
the controller's command byte. This disables the
keyboard interface by driving the clock line low. Data
will not be sent or received.
AE
Enable Keyboard Interface-This command clears bit 4
of the command byte, which releases the keyboard
interface.
CO
Read Input Port-This commands the controller to read
its input port and place the data in its output buffer. This
command should be used only if the output buffer is
empty.
DO
Read Output Port-This command causes the controller
to read its output port and place the data in its output
buffer. This command should be issued only if the output
buffer is empty.
D1
Write Output Port-The next byte of data written to I/O
address hex 60 is placed in the controller's output port.
Note: Bit 0 of the controller's output port is
connected to System Reset. This bit should not be
written low as it will reset the microprocessor.
EO
Read Test Inputs-This command causes the controller
to read its TO and T 1 inputs. This data is placed in the
output buffer. Data bit 0 represents TO, and data bit 1
represents T1.
System Board
1-53
FO-FF Pulse Output Port-Bits 0 through 3 of the controller's
output port may be pulsed low for approximately 6
microseconds. Bits 0 through 3 of this command indicate
which bits are to be pulsed. A 0 indicates that the bit
should be pulsed, and a 1 indicates the bit should not be
modified.
Note: Bit 0 of the controller's output port is
connected to System Reset. Pulsing this bit resets
the microprocessor.
I/O Ports
The keyboard controller has two I/O ports, one assigned for
input and the other for output. Two test inputs are used by the
controller to read the state of the keyboard's clock (TO) and
data (Tl) lines.
I
I
I
I
The following figures show bit definitions for the input and output
ports, and the test-inputs.
1-54
System Board
Bit 7
Bit 6
Bit 5
Bit 4
Bit
Bit
Bit
Bit
3
2
1
0
Keyboard inhibit switch
o = Keyboard inhibited
1 = Keyboard not inhibited
Display switch - Primary display attached to:
o = Color/Graphics adapter
1 = Monochrome adapter
Manufacturing Jumper
o = Manufacturing jumper installed
1 = Jumper not installed
RAM on the system board
o = Enable 512K of system board RAM
1 = Enable 256K of system board RAM
Reserved
Reserved
Reserved
Reserved
Input-Port Bit Definitions
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
7
6
5
4
3
2
1
0
Keyboard data (output)
Keyboard clock (output)
Input buffer empty
Output buffer full
Reserved
Reserved
Gate A20
System reset
Output-Port Bit Definitions
Keyboard data (input)
Keyboard clock (input)
Test-Input Bit Definitions
System Board
1-55
Real-Time Clock/CMOS RAM Information
The RT/CMOS RAM chip (Motorola MC146818) contains the
real-time clock and 64 bytes of CMOS RAM. The internal clock
circuitry uses 14 bytes of this RAM, and the rest is allocated to
configuration information. The following figure shows the CMOS
RAM addresses.
Addresses
00 - 00
DE
OF
10
11
12
13
14
15
16
17
18
19
lA
lB - 20
2E - 2F
30
31
32
33
34 - 3F
Description
*
*
Real-time clock information
Diagnostic status byte
* Shutdown status byte
Diskette drive type byte - drives A and B
Reserved
Fixed disk type byte - types 1-14
Reserved
Equipment byte
Low base memory byte
High base memory byte
Low expansion memory byte
High expansion memory byte
Disk C extended byte
Disk 0 extended byte
Reserved
2-byte CMOS checksum
* Low expansion memory byte
* High expansion memory byte
* Date century byte
* Information flags (set during power on)
Reserved
CMOS RAM Address Map
* These bytes are not included in the checksum calculation and
are not part of the configuration record.
1-56
System Board
Real-Time Clock Information
The following figure describes real-time clock bytes and specifies
their addresses.
Byte
Function
Address
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Seconds
Second Alarm
Minutes
Minute Alarm
Hours
Hour Alarm
Day of Week
Date of Month
Month
Year
Status Register
Status Register
Status Register
Status Register
00
01
02
03
04
05
06
07
08
09
OA
OB
OC
OD
A
B
C
D
Real-Time Clock Information (Addresses 00 - 00)
Note: The setup program initializes registers A, B, C, and
D when the time and date are set. Also Interrupt 1A is the
BIOS interface to read/set the time and date. It initializes
the status bytes the same as the Setup program.
Status Register A
Bit 7
Update in Progress (UIP)-A 1 indicates the
time update cycle is in progress. A 0 indicates
the current date and time are available to read.
Bit 6-Bit 4
22-Stage Divider (DV2 through DVO)-These
three divider-selection bits identify which
time-base frequency is being used. The system
initializes the stage divider to 010, which selects a
32.768-kHz time base.
System Board
1-57
Bit 3-Bit 0
Rate Selection Bits (RS3 through RSO)-These
bits allow the selection of a divider output
frequency. The system initializes the rate
selection bits to 0110, which selects a 1.024-kHz
square wave output frequency and a
976.562-microsecond periodic interrupt rate.
Status Register B
Bit 7
Set-A 0 updates the cycle normally by
advancing the counts at one-per-second. A 1
aborts any update cycle in progress and the
program can initialize the 14 time-bytes without
any further updates occurring until a 0 is written
to this bit.
Bit 6
Periodic Interrupt Enable (PIE)-This bit is a
read/write bit that allows an interrupt to occur at
a rate specified by the rate and divider bits in
register A. A 1 enables an interrupt, and a 0
disables it. The system initializes this bit to O.
Bit 5
Alarm Interrupt Enable (AIE)-A 1 enables the
alarm interrupt, and a 0 disables it. The system
initializes this bit to O.
Bit 4
Update-Ended Interrupt Enabled (UIE)-A 1
enables the update-ended interrupt, and a 0
disables it. The system initializes this bit to O.
Bit 3
Square Wave Enabled (SQWE)-A 1 enables the
the square-wave frequency as set by the rate
selection bits in register A, and a 0 disables the
square wave. The system initializes this bit to O.
Bit 2
Date Mode (DM)-This bit indicates whether
the time and date calendar updates are to use
binary or binary coded decimal (BCD) formats.
A 1 indicates binary, and a 0 indicates BCD. The
system initializes this bit to O.
1-58
System Board
Bit 1
24/ 12-This bit indicates whether the hours byte
is in the 24-hour or 12-hour mode. A 1 indicates
the 24-hour mode and a 0 indicates the 12-hour
mode. The system initializes this bit to 1.
Bit 0
Daylight Savings Enabled (DSE)-A 1 enables
daylight savings and a 0 disables daylight savings
(standard time). The system initializes this bit
to O.
Status Register C
Bit 7-Bit 4
IRQF, PF, AF, UP-These flag bits are
read-only and are affected when the AlE, PIE,
and VIE bits in register B are set to 1.
Bit 3-Bit 0
Reserved-Should be written as a O.
Status Register D
Bit 7
Valid RAM Bit (VRB)-This bit is read-only and
indicates the status of the power-sense pin
(battery level). A 1 indicates battery power to
the real-time clock is good. A 0 indicates the
battery is dead, so RAM is not valid.
Bits 6-Bit 0
Reserved-Should be written as a O.
CMOS RAM Configuration Information
The following lists show bit definitions for the CMOS
configuration bytes (addresses hex OE - 3F).
Diagnostic Status Byte (Hex OE)
Bit 7
Power status of the real-time clock chip-A 0
indicates that the chip has not lost power, and a 1
indicates that the chip lost power.
System Board
1-59
Bit 6
Configuration Record (Checksum Status
Indicator)-A 0 indicates that checksum is good,
and a 1 indicates it is bad.
Bit 5
Incorrect Configuration Information-This is a
check, at power-on time, of the equipment byte
of the configuration record. A 0 indicates that
the configuration information is valid, and a 1
indicates it is invalid. Power-on checks require:
•
At least one diskette drive to be installed (bit
o of the equipment byte set to 1).
•
The primary display adapter setting in
configuration matches the system board's
display switch setting and the actual display
adapter hardware in the system.
Bit 4
Memory Size Comparison-A 0 indicates that
the power-on check determined the same memory
size as in the configuration record, and a 1
indicates the memory size is different.
Bit 3
Fixed Disk Adapter/Drive C Initialization
Status-A 0 indicates that the adapter and drive
are functioning properly and the system can
attempt "boot up." A 1 indicates that the
adapter and/or drive C failed initialization, which
prevents the system from attempting to "boot
up."
Bit 2
Time Status Indicator (POST validity check)- A
o indicates that the time is valid, and a 1 indicates
that it is invalid.
Bit 1-Bit 0
Reserved
1-60
System Board
Shutdown Status Byte (Hex OF)
The bits in this byte are defined by the power on diagnostics. For
more information about this byte, see "BIOS Listing. "
Diskette Drive Type Byte (Hex 10)
Bit 7-Bit 4
Type of first diskette drive installed:
0000
0001
0010
No drive is present.
Double Sided Diskette Drive (48 TPI).
High Capacity Diskette Drive (96 TPI).
Note:
Bit 3-Bit 0
0011 through 1111 are reserved.
Type of second diskette drive installed:
0000
0001
0010
No drive is present.
Double Sided Diskette Drive (48 TPI).
High Capacity Diskette Drive (96 TPI).
Note:
0011 through 1111 are reserved.
Hex address 11 contains a reserved byte.
System Board
1-61
Fixed Disk Type Byte (Hex 12)
Bit 7-Bit 4
Bit 3-Bit 0
1-62
Defines the type of first fixed disk drive installed
(drive C):
0000
No fixed disk drive is present.
0001
to
1110
Define type 1 through type 14 as shown
in the following table (also see BIOS
listing at label FD_TBL)
1111
Type 16 through 255. See "Drive C
Extended Byte (Hex 19)" on page 1-65 .
Defines the type of second fixed disk drive
installed (drive D):
0000
No fixed disk drive is present.
0001
to
1110
Define type 1 through type 14 as shown
in the following table (also see BIOS
listing at label FD_TBL)
1111
Type 16 through 255. See "Drive D
Extended Byte (Hex 1A)" on page 1-65 .
System Board
The following figure shows the BIOS fixed disk parameters.
Type
Cylinders
Heads
Wr i te
Pre-Comp
Landing
Zone
1
2
3
4
5
6
7
8
9
10
11
12
13
14
306
615
615
940
940
615
462
733
900
820
855
855
306
733
4
4
6
8
6
4
8
5
15
3
5
7
8
7
128
300
300
512
512
None
256
None
None
None
None
None
128
None
305
615
615
940
940
615
511
733
901
820
855
855
319
733
15
Extended Parameters (hex 19 and 1A)
BIOS Fixed Disk Parameters
Hex address 13 contains a reserved byte.
Equipment Byte (Hex 14)
Bit 7-Bit 6
Indicates the number of diskette drives installed:
00
01
10
11
Bit 5-Bit 4
1 drive
2 drives
Reserved
Reserved
Primary display
00
Primary display is attached to an adapter
that has its own BIOS, such as one of the
following:
•
•
the Enhanced Graphics Adapter
the Professional Graphics Controller.
System Board
1-63
01
Primary display is in the 40-column mode
and attached to the Color/Graphics
Monitor Adapter.
10
Primary display is in the 80-column mode
and attached to the Color/Graphics
Monitor Adapter.
11
Primary display is attached to the
Monochrome Display and Printer Adapter.
Bit 3-Bit 2
Not used.
Bit 1
Math Coprocessor presence bit:
o
1
Math Coprocessor not installed
Math Coprocessor installed
Diskette drive presence bit:
Bit 0
o
1
Diskette drive not installed
Diskette drive installed
Note: The equipment byte defines basic equipment in the
system for power-on diagnostics.
Low and High Base Memory Bytes (Hex 15 and 16)
Bit 7-Bit 0
Address hex 1S-Low-byte base size
Bit 7-Bit 0
Address hex 16-High-byte base size
Valid Sizes:
0100H
0200H
0280H
1-64
System Board
256K-system board RAM
512K-system board RAM
640K-512K system board RAM
and the IBM Personal Computer
AT 128KB Memory Expansion
Option
Low and High Expansion Memory Bytes (Hex 17 and 18)
Bit 7-Bit 0
Address hex 17-Low-byte expansion size
Bit 7-Bit 0
Address hex 18-High-byte expansion size
Valid Sizes:
512K-1/0 adapter
1024K-1/0 adapter (2 adapters)
1536K-1/0 adapter (3 adapters)
through
3COOH 15360K I/O adapter (15M
maximum).
0200H
0400H
0600H
Drive C Extended Byte (Hex 19)
Bit 7-Bit 0
Defines the type of first fixed disk drive installed
(drive C):
00000000 through 00001111 are reserved.
00010000 to 11111111 define type 16
through 255 as shown in the following table
(see BIOS listing at label FD_TBL).
Drive D Extended Byte (Hex lA)
Bit 7-Bit 0
Defines the type of second fixed disk drive
installed (drive D):
00000000 through 00001111 are reserved.
00010000 to 11111111 define type 16
through 255 as shown in the following table
(see BIOS listing at label FD_TBL).
System Board
1-65
The following figure shows the BIOS fixed disk parameters for
fixed disk drive types 16 through 22.
Note:
Types 23 through 255 are reserved.
Type
Cylinders
Heads
16
17
18
19
20
21
22
612
977
977
1024
733
733
733
4
5
7
7
5
7
7
Wr ite
Pre-Comp
All Cyl
300
None
512
300
300
300
23
Reserved
255
Reserved
Landing
Zone
663
977
977
1023
732
732
733
BIOS Fixed Disk Parameters (Extended)
Hex addresses IB through 2D are reserved.
Checksum (Hex 2E and 2F)
Bit 7-Bit 0
Address hex 2E-High byte of checksum
Bit 7-Bit 0
Address hex 2F-Low byte of checksum
Note:
1-66
Checksum is calculated on addresses hex 1O-2D.
System Board
Low and High Expansion Memory Bytes (Hex 30 and 31)
Bit 7-Bit 0
Address hex 30-Low-byte expansion size
Bit 7-Bit 0
Address hex 31-High-byte expansion size
Valid Sizes:
02000
0400H
0600H
512K-1/0 adapter
1024K-I/0 adapter
1536K-I/0 adapter
through
3COOH 15360K I/O adapter (15M
maximum).
Note: This word reflects the total expansion memory above
the 1M address space as determined at power-on time. This
expansion memory size can be determined through system
interrupt 15 (see the BIOS listing). The base memory at
power-on time is determined through the system
memory-size-determine interrupt (hex 12).
Date Century Byte (Hex 32)
Bit 7-Bit 0
BCD value for the century (BIOS interface to
read and set).
Information Flag (Hex 33)
Bit 7
When set, this bit indicates that the top 128K of
base memory is installed.
Bit 6
This bit is set to instruct the Setup utility to put
out a first user message after initial setup.
Bit 5-Bit 0
Reserved
Hex addresses 34 through 3F are reserved.
System Board
1-67
110 Operations
Writing to CMOS RAM involves two steps:
1.
OUT to port hex 70 with the CMOS address that will be
written to.
2.
OUT to port hex 71 with the data to be written.
Reading CMOS RAM also requires two steps:
1.
OUT to port hex 70 with the CMOS address that is to be
read from.
2.
IN from port hex 71, and the data read is returned in the AL
register.
1-68
System Board
Specifications
System Unit
Size
•
Length: 540 millimeters (21.3 inches)
•
Depth: 439 millimeters (17.3 inches)
•
Height: 162 millimeters (6.8 inches)
Weight
•
20.0 kilograms (44 pounds)
Power Cables
•
Length: 1.8 meters (6 feet)
Environment
•
Air Temperature
System On: 15.6 to 32.2 degrees C (60 to 90 degre@s F)
System Off: 10 to 43 degrees C (50 to 110 degrees F)
•
Wet Bulb Temperature
System On: 22.8 degrees C (73 degrees F)
System Off: 26.7 degrees C (80 degrees F)
System Board
1-69
•
Humidity
System On: 8% to 80%
System Off: 20% to 80%
•
Altitude
Maximum altitude: 2133.6 meters (7000 feet)
Heat Output
•
1229 British Thermal Units (BTU) per hour
Noise Level
•
Meets Class 3; 59 decibels average-noise rating (without
printer)
Electrical
•
Power: 450 VA
•
Range 1
Nominal: 115 Vac
Minimum: 100 Vac
Maximum: 125 Vac
•
Range 2
Nominal: 230 Vac
Minimum: 200 Vac
Maximum: 240 Vac
1-70
System Board
Connectors
The system board has the following additional connectors:
•
Two power-supply connectors (PS8 and PS9)
•
Speaker connector (119)
•
Power LED and key lock connector (J20)
•
Battery connector (J21)
•
Keyboard connector (J22)
The pin assignments for the power-supply connectors, PS8 and
PS9, are as follows. The pins are numbered 1 through 6 from the
rear of the system.
Connector
ps8
PS9
Pin
Assignments
1
2
3
4
5
6
Power Good
+5 Vdc
+12 Vdc
-12 Vdc
Ground
Ground
1
2
3
4
5
6
Ground
Ground
-5 Vdc
+5 Vdc
+5 Vdc
+5 Vdc
Power Supply Connectors (PS8, PS9)
System Board
1-71
The speaker connector, 119, is a 4-pin, keyed, Berg strip. The
piris are numbered 1 through 4 from the front of the system. The
pin assignments are as follows:
Pin
Function
1
Data out
Key
Ground
+5 Vdc
2
3
4
Speaker Connector (J19)
The power LED and key lock connector, J20, is a 5-pin Berg
strip. The pins are numbered 1 through 5 from the front of the
system. The pin assignments are as follows:
Pin
ASSignments
1
2
LED Power
Key
Ground
Keyboard Inhibit
Ground
3
4
5
Power LED and Key Lock Connector (J20)
The battery connector, J21, is a 4-pin, keyed, Berg strip. The
pins are numbered 1 through 4 from the right of the system. The
pin assignments are as follows:
Pin
1
2
3
4
Assignments
Ground
Not Used
Key
6 Vdc
Battery Connector (J21)
1-72
System Board
The keyboard connector, 122, is a 5-pin, 90-degree Printed
Circuit Board (PCB) mounting, DIN connector. For pin
numbering, see the "Keyboard" Section. The pin assignments are
as follows:
Pin
1
2
3
4
5
Assignments
Keyboard Clock
Keyboard Data
Reserved
Ground
+5 Vdc
Keyboard Connector (J22)
System Board
1-73
The following figure shows the layout of the system board.
Keyboard
Connector
Rear Panel
Battery
~~ Connector
~~=I=' (J21)
Power
Supply
Connectors
I/O
Channel
Connectors
Variable
Capacitor
- - - - - -,
rnrnrnrnrnrnrnrnrn
I
I
rn~rnrnrnrnrnrnrn :
@]
1-74
System Board
Note: The memory module
layout and system board
dimensions may vary.
Notes:
System Board
1-75
Logic Diagrams - Type 1
~e;
go2l:;g~;%~g~~65~~
~~
-
-
C\I
C\I
0
....
....
G)
G)
••
.c
..
8C~Sg~gb~g~5~5~~§
~
IV
C
IV
a:
,--
1
m
~
C\I
.-
Il)
.-
:r -I'
G)
c.
li~I~~ jl*ego~~",~g:;~g~o~:::g~~"
8
~~
1-7 6
System Board
~~~~
§"§'
",iS~'~i~
11'1
It!
, ""
::.:~gi:"'''''i
...
"'II'I~!.
iil~~
SA'
so.
1
(SH.4)
(SH.6)
7
,
5
,,
SAS
SA6
m
SA'
-OM' "EN
RNI+-1
'5
10.
,
ALS02
~IO.
Isr
(SH.4)
r
,
,,
,
SAil
"0
5.,
s..,
,
5
r
.
:
A
A
A
19
.
..
,"
,"
'"
,,""
,,"
"
B"
glR
7
'"
SAID
".5"
:
A
(81'1.1,11,14,15,16)
(SH.l,1',14,15,17)
(SH.3,1',14,15)
us
'"
'"
(SH.l,1',14,18)
(SH.l',13,14)
(SH.11,13,14)
(SH.11,l3,14)
(SH.l1,_13,14)
GRZ
(SH.e,lS)
'"
(SH.l1,l3,14)
'"
'"
'"
A
2 .. 0;
A
,"
,,8""\2
A
A
•
B
, "I'
: 1&
DlR
G
'"
'"
(SH.3)
""
Type 1 512KB Planar (Sheet 5 of 22)
XAIO
XAII
XAI2
ISH,C4(
XAIl
~AI"
XAI'i·
XAIE.
(SH.l1,14)
(SH.ll,14,lS)
(SH.2)
I
(SH.2)
,
SDO
SOl
SDl
S",
SD6
SD,
Il
I
(8H.2)
SOli
5012
SDI~
Il
5010:;
l
....
(SH.5)
(SH.5)
(SH.4)
-RAM 0 CA8
-RAM 1 CAS
-LCS ROM
(SH.15)
+0
-XMEMR
(8H.5)
(SH.22)
'"
""
(SH.8,9,10.11)
""
""
(SH.8.9,IO.ll)
MOlD
Hall
MOl2
Hon
HOI..
HalO:;
" ,'
I' WI!
SDI"
1
"Db
'.
~
," ,,
"" ''
soe
SD'
(51·1.15)
f=
,
~'
st>m
(SH.8,9.10,11)
"DZ
~'""", ,,
SO,
(5H.1S)
(8H.2)
",>0
""
""
""
""
~:
SO,
'
I
(SH.6,9,10,11)
IIr~-
II~j
'"
~----------~~:l'-'------J
~
'~-----------j
BM/IO
(SH.2)
ALSO"
(SH.2)
(SH.2)
{SH.71
(SH.2)
(8H.2)
(8H.12)
(SH.19)
ALE
-MEMW
+RAS
-lOR
+AIQW
01
-10 CS 16
!~~:~;l ~~~~
~~:~) ~:~~~8
I
HUll
10
!~ i"~H'I-I ,-I
UO
PAllt>l'
~ III1~~~~~~n
~'~'~~~~~~~~~~~~~~~~~~~~ gfJ~.fsONV i~~: ~~;
GATE 245
-OMAAEN
-END eyc
(SH.13)
(8H.5.1S)
(8H.12)
__________________ __________
20
-i
~
I
....
QO
Type 1 512KB Planar (Sheet 6 of 22)
l N0I1:J3S
...
f=
.,
·'f:
I
10K
QO
N
~
(SH.5)
-LMEGCS
(SH.2)
-I'1EHR
-HEHW
(SH.2)
ALS""
~:~
~T-P~'
1.2
l
9
"K
AI,
y~1
'12
"n
',on
"
16
"
I
Y2 12
U'I9
FOD
l;Ju90 8
l
'"
+ RAS
1,J
DEL"Y
U61
PEllZ n
ItO 110
If
[20
160
200
10
6
'I
1
(SH.5)
-RAM 0 CAS
(SH.5)
(SH.5)
+RAM 0 RAS
+RAM 2RAS
(SH.5)
-IW'II CAS
I
U81
ALSO If
(SH.5)
(SH.5)
1 uel
,
,
I
Z u,,)q
~
+RM'IIRAS
U,)II
II)
6
I
2
UC;II
II)
FlO
I
10
(SH.2)
XAO
-XllH'
'i
U81
6
12
-RAS 0
7 100 ,0
(SH.a)
(SH.e)
1 100 1'4
(SH.a)
Fro
,
II U,)7"'\. 8
2
FlO
13
u'n
11
FlO
~
U'51
II
FlO
OJ U'il
10
II
If 1011 11
FlO
t~
AlSO"
(SH.15)
,.,
FlO
~ u·n\..6
,
II
(SH.6)
(SH.a)
If U,)1\'6
12 Foe
11 U'>9
+RAMl AtS
FO'
1
.RAS
+(A5
~
ALSOIf
(SH.20)
(SH.20)
l
TINE
III
-SHEHR
-SMEMW
FtO
~ use
Type 1 512KB Planar (Sheet 7 of 22)
12
12
•
,
tI 101'1 11
2 1OO
;
DINI DOUT
,,lit
-""
SA'
S"
SAO
SAID
SAl'
SAIl
"""'SEL
_n
rm
Hf)II;
ISH. 21) _ REFRESH
--
I:
I
110"
I DIN U..l
1.11f DlN/OOUT
I Iii
1.'1t
'I
'I
VI
1
~I
-...
-RAS'
,
,,on
, ,"
I
ItA,
H. .
q HAl
"AO
HAl
-""
U. .
-•
1-
....""
"""
HO'
MO"
""'
1101'
_HI
-,
lRASi
AO
.
.
A'
12
~
,
Al
,
' .,
"
~ ~o
m
I ,It DIN/Dour
,.
-,
r ., I •
TO ClIO
9-.10/ol;J
I .,
'"
DIN/OOOT
,~
i'
HAO
HAl
(SH.9)
"A'
,
I~TAGE
HMo
MAO
8H
""
ItA'
H'"
I 2-IOIIF
,
9-.'Oj.\~
(
10pF: Cl,2,52,53
.10,.F: C7,1',16,20,28,
32,38.42,47
ca,12,17,21.29.
2-,o"rl
33,39,43,48
...w,
'"
"'""'"
'"
'"I,llt
1,IIt
U. .
U. .
,
DIN/OOUT
""
DIN/DOUT
(9) 128KX!
U'tlt'lf
rIFOUTl
(SH. 9,10)
~
I
~
~
Type 1 51 2KB Planar (Sheet 8 of 22)
L NOl133S
....
~
I
MOO
MOl
CID
olio.
MOl
MO'
IZl
M"
~
~
~
!!!!!
Ii!
=
l
10 lit
""'
.!!!!
DIN IDOUT Ul')
1.11f
1.11f
DIN / DOUT lI2'i
DIN IOOUT U~
1.11f
tIN /OOUT
TA.
1&
(SH.e)
r
TA,
m
MOO
..
m-
I1DII
.=.!&..l
"01
"0'
~
-....
"'",
OO
=1!ll
"
-
-CAS IL
MO"
"00
.o,
~ Ie
"Al
!!
1 """A'"A'
11
"AI
ItA,
(SH.a)
.... 1
(SH.7)
-to. . ,
t
(SH.7)
-RAS.
-CASIL
-rutH
-+--
•
FZIt'
AN'
It'L2
u••
TAO
TAl
t
.
--'
L..J1
, ,.n
TA'
TA'
TA
TA.
TA7
HOPIN I
HOPINO
(SH.1O)
HOPINI
(SH.8)
(SH.a)
(SH.22)
"'fOUT.
......url
-TVE
I,DIN
MIlII
MD.
1.11f
hi ..
HOlD
1,'1f
HDII
MOl2
I,
'If
Ulfe.
.
DIN/DOur Uif
~UIO
BAN"
OJN lOOUT UII
DrN / DOUT U22
HOll
MaIO
liT
m
TAl
'm"
m
TA,
~fAS ,
::;w-!!AS •
-CAS I H
OECOUPUNG CAP:
YOLTAGE I
lANK
TO GND
+ '5
~
TAO
{SH.l0)
I OPTIONAL
HDPOUT I
I.
(SH.S)
l(
PQ)pour 0
-.
.-"'"'.....+.
(SH.e)
lANk 2
=l.!tL
" "1
~
I~
7
+.
...,
AI
"'2
A•
A'
••
A7
~wr
I·.~
(,,)
128 K IC I
~
OPTIONAL
Type 1 512KB Planar (Sheet 9 of 22)
19-.IQuF
I
"-./OuF
2-101.11'"
I
Z-IOuF
lOpF:
C3,4,54,55
.1Op.F:
ca,l3,18,22.30.
34,40,44,49
Cl0,14,19,23,31,
35,41,45.50
~
~
~
@
~
~
~
f
~
0;
""
"'"
.,..
~
@
"
~
"~ ""
'"
"~
"~ ~"
"
~
i="iil N
~
!2.~
I:l
:i:r I
I:l
:J:
System Board
1-85
i4~~~~~!;;;~S:~i~!ii~'lf:8c21~gl!';8::;~ ~:
=
~~~~
~~
~~
~
~--~-~
N
....
........
CD
CD
.c
-..
U)
as
c
as
a::
III
~
C'\I
....
It)
1-86
System Board
r---------------
I
I
1
1
I
I
,
'8
-
01
(SH.B,tS)
(SH.t)
-ARDY
- on
(SH.S)
L--f---------':========i-----------------------JIJI-
RES/i!I'oIS
~Jl----::-=----------------------AROyEN
(SH.S)
(SH.1)
(SH.S)
.ATA CONY
FI1'l
'"
+CONYA'
l_-.__~~~___________~~::--------~~~~~DZ
DI
(SH.4)
.,
i
==
D'
CLftUIOO
-RESET
(SH.3)
-~5
r;lE>'
III
l
..
+CONVAlE
(SH.4)
~-CNTLOFF
(8H.2)
11
I~.
I
QC
......
Type 1 512KB Planar (Sheet 12 of 22)
l
I
NOll::J~S
.
""""
I
Of)
Of)
(SH.6)
(SH.21
t
OIR'Zlfl)
fI}
{SH.21
~
(SH.6)
GATEl't'i
-e
~
==
0
a.
+
(SH.21
I
so;
SO
SO,
SO'
SO,
SO
00
•••
o •
,, ••
•
I 'DO
500
SO
,•
,
500
507
2
ALSZIf"i
5
SO,
"""
••
"
••
~ ~IR
."
•
I
SDt~
"
: 17
•
SOIl)
UI02
508
SO,
5010
1
(SH.21
SOil
SO"
501'
SI'"
500
••
,
o•
5"'
.. ,
00
507
11 ALS08
(SH.31
·..' . .'"'""
'.
•
SDllf
HLDA
(SH.19) -MASTER
12
U"~
II
I
AlS04
q
us.
•
Al 52
Lt')
B
:"i
• I
:• 17
18
"•
,---l
OIR
2 AlS27
(SH.2)
-lNTA
, UI21
(SH.5)
(SH.5)
(SH.5)
,u
I
2 •
'I
KA7
.,
'2 .13
.
•
~
.q
'D'
'D7
(SH.14,15,16,17,18)
(SH. 3,14,15,16,17,18)
+ACK
-ACK
(SH.3)
(SH.4,15)
Uill
I~
ALSOIf
'D'
'0'
-A(K
JIM
XA8
-XIOR
-NPCS
V2
(SH.14('.'''''8)
KO'
~
(SH.S)
(SH.5)
(SH. 15)
(SH.3)
UBit
'00
'01
'02
U62
8
10
USIH
,
L---'.:
TO
•
C
G2'
G2B
GI
to;
tit
n
12
~
10
YO
•
T7
7
UI 2 1
Type 1 51 2KB Planar (Sheet 13 of 22)
-OMAt (S
-INTRICS
-TIC (s
(SH.14)
(SH.lS)
(SH.1S)
-PPI (S
ISH. 18)
-PG REG (S (SH. 15)
-ItHR 2CS (SH.l{;1
-OMA2(S (SH.14)
- CS 287
(SH.3)
.
.
~
"-
55
fij
~2~~
~
wfii
~
§"§~~
"-
~
~~
IIII
!!H'?.~~
1
t:1~1~'~1
W·· ..····
:1tr~1~1~
f····
..· I~J
~
<>-"'r-->I!",:t''''N
I
~ noon:ooool~
0000:000'"
J~~l~c~
:lJ:r :l:r =-Lre:oaH~~
8-2l~g~~3
><
ex
><><><><
g~
,
ltlf
of
~~
#
I~
c-
?=
"
~
~~~ ~
~~
<>-"'r-- .o",%",N
.
f:'1f:'1f:'1~
z.
~~~~
I------
fijfij
~
.J
r
im
•,
~~
. .;; ~ ~.~.,g o~~ ~1;g
~
.
~
J~~
o
~
~
nn~I~I~I~'~~d~ ~
Nr
•~
I~
-
~
o
~
,...
...
.d [".,
. .
•
~
5
6
I
~i
.
~
~n
~
~~~~
5
~ .;;, •• ~., 8o~ ~g ~ g8~n~1i1~~I~'"~d ~
~""."~~'"-~'"N'. ___ N_'=·-Il
~~~~~~~~~~~~~~~N
-
-- -
,
Q)
Q)
~
--...
(/)
IU
C
IU
c:
ID
~
t- if--
('II
,...
It)
,...
I
Q)
Q.
~
~-~5x'~'oo~-~~.~~-
l
~
~
=
•"~
-
'ld~
'"~!
~,
f
I~~j~j~j ~
~ ~8~~ ~S~e~~H~ee
.I! Igl~I~I~I;I~I~~I~I!
I
;M~
:il:I
!:2.f:'1~
System Board
1-89
!
g'"
~.:;....
~ 5 'i~!-'
~~
C\I
C\I
-...
o
It)
....Q)
Q)
s:
-.
tJ)
-
aI
C
aI
is::
m
~
D ~ ~~
...
...
C\I
·-='·~·IT~j
It)
# -
'.
1tH~==I=+:j::j:=j:+=+==t1t1l
....
~
~I
L~
-<
mo
. ...
~.c«'
IOKtAN'i-!I
..""
5"t'NC\-!L--NC
ICEYBOARDCONIt.
('iPINOIN)
~::::=l::l:j:t===~ ~
:: ~k:A
r-:-;::::=ti:It===3:j; ~
::~ ~~O
,
'TESTO
ruTl
.§..M!!
klIOCLK
0
""
l:,:·::r
IOTTOI't
(PlNSIOE")
,SH.l0)
l:~: ~I
(SH.21)
PCK~~~~~~~~~~~~~~~~~'III
10 ~~g
REFDET
Type 1 512KB Planar (Sheet 17 of 22)
.1 I •
"f~'i.
FUl
(SH.22)
(SH.t!
(SH.51
(SH.tB)
-....
C\I
C\I
o
.....
CO
:;:~
~
a:
:JL-.,
Q)
Q)
.c
tn
-...
«I
c:
«I
D:
ID
. ~~ ~
e§
[~ ~
E
~
zz
N
I~ ~
~
....
~
...
...
,r
C\I
10
~
,N
~~
>
5
M
MN
~-;;;
1!21!2
1!2
~iO§'~~
~~~~~
System Board
1-93
...
I
'=
~
00
'<
'"....
~
e
t:C
Q
~
=-
~ ~~n ~;;Og
r-'~~~-J~,;rr
'T
SDe
so,
SOlO
SOli
SOl2
SOt1
so,"
(SH.2)
s~s
(SH.4)
LAn
LAZ2
LA21
LA2D
!
(SH.4)
(SH.2,21)
(Sh.2l
SBI£
-M[I1R
-I'1EI'1W
CII
liD
m
'"
ill
CONNECTOR
06 PIN}
ill
DI7
1001
002
ill:
I
(SH.14)
-DACKO
-OA(I<';
-OAO
B11
u
All
DOInCDI
D1SUC!8
Type 1 512KB Planar (Sheet 19 of 22)
(SH.14)
(SH.14)
(SH.14)
(SH.14)
(SH.16)
t
(SH.IS)
(SH.2)
SDO
SOl
S02
1
(SH.2)
(SH.4)
SOl
S,"
S",
SD6
S07
SAD
SAl
SAl
SAl
S'"
SA>
SA'
SA7
SAO
SAO
5,1,'0
SAil
SAI2
SA"
5,1",+
(SH.4)
00
'<
~
S,I,I'j
SAlt.
SAI7
SAle
SAt9
A"
A08
A 7
A ,
AOJ
J8
A27
A22
,ALE
OWS
".
(SH.3)
(SH.12,15,21)
IRQ 9
IRQ ~
IRQ '+
IRQ'i
IRQ 6
IRQ 7
(SH.16)
822
.IB
."
."
AI2
(SH.3)
(SH.22)
-liD (H (I(
J/O (H ROY
'"
.21
BI'
.".26.17
."
".'"
Am
'04
A"
-REFRESH
-0,1,(1( t
-0,1,(1( 2
-0,1,(1( ~
.,
.",
A
."
AlB
AI7
AI
AI;
A"
(SH.21)
(SH.14)
(SH.14)
(SH.14)
Os(
,+,1K
J7
Al'
A27
m
Al'
A
SYS(LI(
7 Ie
AEN
.29
J6
A7I
(SH.3)
(SH.l0)
(SH.14)
(SH.3)
(SH.3)
RESET DRY
.,
",
JS
A02
-lOR
-S MEMR
-5 MEMW
'"
AOS
A04
(SH.2)
(SH.2)
(SH.7)
(SH.7)
-lOW
JI
"
I
811
L
!
(SH.16)
ORQ I
ORQ2
(SH.14)
(SH.14)
(SH.14)
PWR GOOD
(SH.1,1S)
TPI2
PS.
PCYoIER
820
J
827
All
.02
'0'
807
+12
-12
G
."
1D"~1,"7"F
.01
BID
82.
0(26)
",
'D7
I
~
+,
(X2'I)
I I
ONN.
iID':l
S'"
~
-'i
~
PS'
GNO I
GNO
~-o;YI
+, y
'j
6
GOOO
e
c
e
c
+0; ~ DC
+'i \ DC
('I)
a
=
Q
..,
~
=-
....
I
\C
fA
Type 1 51 2KB Planar (Sheet 20 of 22)
L NOI133S
N
N
-....
o
N
....
Q)
Q)
.c
-...
en
CU
C
CU
D:
1%1
::.::
N
....
It')
!i
"~
1-96
~
~
,
~
~
"~
§,.,.
xi
~~
System Board
"~
Ii
~
~
.•
~
~
•
'"
~
iii
~
'"
. .
w
,
12
~
, Ii
~
~
~a:
.1
.d
fp!-o~
8
5
e
v
~
:
Q
~
-..
~
C'I
o
L--'--
C'I
C'I
~
~
0
10
d
CD
CD
~
.c
-.'"..
~
U)
C
a::'"
III
:.:::
...
...
C'I
it)
!:l!!
=
S
5
~
~
L
i
i
~
~
_0_
.~~
---
iii
!'J.!'J.a.
~
3j
~
~
~< ~
::
~iOJi9
~
~~~
~
IS
~
~
i
i"
System Board
1-97
Logic Diagrams - Type 2
~-.-----"
~
'~
g
~~ ~~c~:~~~~~~~~~~~~~~~~~~~$
~L
~
t-
-........
('oj
+-
0
.......
Q)
Q)
.c
-...
en
IV
c:
IV
c::
r:D
~
('oj
....
10
('oj
l~P~1
~~
re
i!iH~~
~_
~~
- _ ..
~~
~=:=
i?'!
1-98
~~
System Board
@@@~
~~
L-.
=
... "'.......
Q)
Q.
Ir--"l'",
~
:;;
~
;
"~
"a
~.
~
~i?
:i:i
@.@.
"-
~,
-.=-c;
n
1a.!1.
~~~!i'~
9~
~~
~
=
ey
--
e;::-;::;::";=-;::xIII:':I :.;:i
!!2-12!!2-!2!!H.2 [{d.!Q.
~
<
"
~
<
"
:~
~~
gc2:l52)~i!:S
ra.ra. ~--
iI
<
"
!:g~~~~~!S
~ -~
System Board
1-99
......
=
I
=
00-
'<
[I}
(SH.t)
(SH.2)
(SH.l)
....
11
""
+ RESET 281
"
19
-XIOW
(SH.4)
(SH.t)
(SH.l)
HALlbL8A
p,
(SH.5)
(SH.14)
(SH.14)
(SH.12)
R[SE'l
-fInn
,,
,"/!l>
-(52IH
"
,,
-IHTA
~ OUSY
-ERROft
+RESET
.,
(SH.l,2,11,12)
(SH.t)
(SH.l5)
""19
10
lO
(SH.4,9,11,14,20,21)
UI30
~
a
t:=
(SH.t)
-MP(S
-BUSY 286
rRG n
OI1AClI(
(SH.13,14)
-OMACLK
(SH.20)
(SH.t)
0
e;
EHAS
(SH.l7)
All
Co
"
"
SVSCLK
(SH.19,20,21)
-SYSCLI(
{SH.ll}
Al'
(SH. 1)
-16t'1HZ
PROCCLK
"
"
"lO
PROCell(
+PClK
(SH. 16)
+ n"
10 (If
(SH.2,1t)
(SH.l6)
(SH.16)
.,
(SH.t6)
(SH.19)
-JOCKO
(SH.9l
-PCk
(SH.12)
X07
(SH. 17)
-""I C5
(SH.l)
(SH.12)
(SH.5)
(SH.l)
U(I(
G~~~
'PU"'-'"
,HI
~LL'
Y,~'~~~~ ""
:~
.'
.---..!L
:
Y. 7
;:
C U1'i
Type 2 512KB Planar (Sheet 3 of 21)
(SH.l)
fllDA
(SH. 1,5,12,20)
BALE
(SH.t9)
(SH.19)
(SH.t9)
RESET ORV
":;}'"
-~~
n
!QIQ
~
at
6l
~
~-~!Q
!Q
-,'"..
o
'It
....GI
GI
.c
-...
en
CO
c:
~!
~
"0(<0; '"
"'c..: ..
~'"
t
~
:iii!
g
CO
Nr
00000 0
Go.
c::
k.:>1'S
IX!
~
'"
'"
,..
It)
GI
Q,
~
~
:;
~
C~;~~~:o::~
~i~~~~~!
~~N~!:!!!:
. . . . . C .... C
~~
~
Y
~-~~
12!!?.
!!?.
-~
""
~-~
;:-;:-;0
~~~
~
I
§.
"~ §"
System Board
1-101
......
(SH.4)
I
=
N
if
....
(I.l
(SH.l)
!
(SH.l)
(SH.20)
..
,"
...'"
'A20
21
."
"'
,
~P,J
"K
51
=
e;
Q.
'2
-
HLOA
ALE
(SH.4)
(SH.6)
l~'
,
RCASI
-
(
r------rl- ~
,ii.
"72
~
, U6~
;
, '"
If
UIIO
,AI
.
SA<
-OM.....EN
..
,."
,. ,
,
5,1,10
..0
SAH
...
,
,,
,
,
7
'"
,""
'"
'"
5AII
(SH,7)
o
12
~
19
0"
-RAN 0 (AS
-RAM I CAS
-LMEG (s
(SH.6,7)
(SH.5)
(SH.7)
+FSYS 16
(SH.6)
"b'
ALS02
t : "" "
6
6
SA2
RH'f-l
(SH.4i
lit
.,
JUP1.PER
" "K
'ST
I
"~~
0'18
0Ht::
g~
0
0
0
0
-ReA.SO
-HEM CS.6
(SH.3)
I
g~
'0
DZ ,
,"
, 0
, 0
RAS
,""
Iq 47
ALS,)H
,+RRAsa
,-+
-RAM SEL
{SH."}
(SH.4)
Dt
RN't-IO
')6/o;IZK
R. t
{SH.16}
(SH.1S)
00'
2"
AI7
.REF"ESH
~
0
285 .. 2
r
2
.
..
··.""
. ·
"
.Ob""
e"
•
.OB
7
•
A
:
""
"
Ib
OIR
r'
XAI
XA2
XA4
XAS
XA6
XA7
XA8
(SH.l,10,13,14,15)
(SH.l,10,13,14,16)
(SH.3,10,13,14)
(SH.l,10,13,17)
(SH,lO,12,13)
(SH.l0,12,13)
(SH.l0,12,13)
(SH.l0,12.13)
GRZ
(SH.8,14)
XIIIO
(SHf"
XA~
B :~
,
,
19
(SH.3)
""
..,, .. . " ··"
,.
'"
2
GATE ALE
AL5Z't.,
:
glR
(SH.6)
"'"
Type 2 512KB Planar (Sheet 5 of 21)
(SH.l0,12.13)
JAil
XAI2
XAI'l
XAI~
~A'b
(SH.l0,13)
(SH.l0,13,14)
.....
...
C'I
r; ..
0
CD
Q
~I
Q)
Q)
.c
-...
en
........................ c:w
as
s:::::
as
........................ 01..:0
c::
m
~
C'I
.....
It)
C'I
Q)
C.
>-
-I
I
.,'"
~I
~
1
1
I
I
I
1
1
1
1
1
1
1
1
I
I
1
1
,
L
_ _ _ _ _ _ _ ...J
=2
~~~
~~~~~m
.
~~~~~~~~ e
HtJ,
N
~
N
~
LfiLfi.,
~-~ "-
iii
121212
N
i-i
12
12
"-
~
N
I-
,---:;; ----,
, - - ..1-
"
!:l! '!'-
I:;:'~
,I
,I
L~.
I
'"
~,
~~
~
1il~
.
"-
~~
r::-NNN;:~!25;1il;
~
~~~~~~~~~~~
System Board
1-103
....
I••
~
<=
""
en.
..
··f~."
I
(SH.5)
fSH.2)
-LMEG CS
-!'lEMA
(SH.2)
-"E""
G~!
:TF~'
A2
'<
.u..""
,
"III
."
,.n
I.
yzl1
1
Rlif'
U"9
~~
EI
i=-=
9
FOD
,;JU't6
8
+RAS
1
TItlE
II
DELAY
U.'
PE21211
"0 80
I2L '
120160
I• •
I
200
8
-SMEttR
-SMEI1W
....
I
I USI
2
I
2 U"i"
~
(SH. 5)
+RAH 0 RAS
ALSI"
(SH.14)
lAO
,
USI
F.8
1
~
"i
FlO
~
UIj'l
ISH. 8)
II
FlO
•
-HAS 0
(SH.SI
-CASOl
(SH.S)
-CASOH
{SH.81
.N2
.. lOOn
I
•
,9 U"il
II
'N2
8
- XBHE
r1DD,:l
I
FlO
I'll U"iB
(SH. 2)
AODR SEL
+CAS
U"iB
(SH.5) '-RApt 0(A5
ISH.S)
I
!
~
ALSO"
(SH-19)
(51:1.19)
8
!
1 10'11&1
L
_..1
-UD
+ RAM SEL
Type 2 512-KB Planar (Sheet 7 of 21)
(SH.9)
(SH. 9)
,..
-...
N
o
co
Q)
Q)
or:
-...
tJ)
co
c
co
c::
m
~
N
,..
It)
-
N
I
Q)
Q.
~
~~::~~~~'!'~I"
LI':!'"
~
..0_"-0;;>
!C
~R
xi-xi
~
~!!!
System Board
1-105
"""I
,
=
="
,~.
oscl rz
171tl
esc
(SH.191
1.19 MHZ
(SH. 15)
"""
00
~
....
~
CLKi-!- Ne
{SH.l}
flC
(SH.3)
PULL Uf'
51
t=
=
+-__~'.~"'~'~
'~LKCL'
'00
(SH.S)
FleD
1<;
.. A
~
d-
PClf(' l
(SH.S)
HDO
HOI
H.,
H.'
H••
HO'
(SH.S)
H••
H.,
H.'
H
••
"'"
HO"
HO"
MOil
(SH.S)
(SH.7)
(SH.7)
(SH.2)
HO"
H.,
-lAO
+R""'SEl
-.....
10K
~::~J
""r------'~""E
,,
'
I
~
+-__-":I":=::h~6
(SH.B)
(SH.S)
~ ,.
RN"-'i
+';
~
U~
FlBD
~"
----If~
~'"
~~
,'
I
~-
(SH.B)
"]"r----------t-'
"E
UI2
~~==~~~~~~h--"I
II
I
us">
8
11
;,~
mQP'~-,,_ __
(l~86 :r"I.!.._-+T___
12 0
II
(LR
"
(SH.14)
(SH,1S)
I
(SH.S)
'i~O:b
Type 2 512KB Planar (Sheet 9 of 21)
(SH.3)
(SH.1S)
i;;;:S!!:;:ii~ttii:lt~i~~;:,!!;;8i5~S~~;!l~ ~:
go-
...
II'
lC~-
-_
~_:f!!::
~
-....
~
'0
o
....
i
.c
-.
en
cu
cu
c
a::
m
~
~
....
II)
111
~
CD
Do
~
•"
"
" "~
~
, ~"
System Board
1-107
~
(SH.3)
-PROCCll(
(SH.3)
...,..,..
I
~
=
QC
ISH. 20)
\1.1
'<
;-
e
=
a.
=>
(SH.l)
(SH.19)
-5YS(LK
PUU UP
(SH.4)
AU ALE
(SH.l)
+RESET
(SH.S)
-ENDm
(SH.S)
ARDY
(SH.l)
QLf
(SH.S)
+IOCMRDY'
(SH.3)
(SH.21)
(SH.s,17)
- ....T
oW>
RES/flWS
(SH.6)
AROVEN
(SH.1)
CONVAO
ISH. 4)
CONVALE
(SH.4)
(NTlOFF
(SH.2)
DATA (ON'
-RESET
(SH.3)
-fFCS
Type 2 512KB Planar (Sheet 11 of 21)
(SH.6)
O1R 2"1j:
(SH.. 2)
5DO
5D'
5DZ
5D'
====
-
(SH.2)
SDO
SD7
(SH.6)
GATE 2'l1j
----i
...
-===:::
5D'I
(SH.2)
1
(SH.2)
SDO
SDIO
SDIl
SD~
51>'
SD"
.,..
'DO
~
1 ...
ALS2ltlj:
,
===:
•
,
•••
,
,
1
~
~
A
A
A
A
A
A
A
•
R'•
===
,
=
i
"""
"""
=
\C
-"PCS
-INT'"
ISH. 5)
(SH.5)
(SH.5)
,
....
,.,
-'lOR
.
u,o.
,"
AlS21t'i
5.0
~UIlc0--11
..
I
ALSO ..
• UB'
~
•
U8't
12
4·'
121
""
"IZ
8
,.
~
9
: :'i
'
'
••
'.0
(813., ..
...
(SH.13,l4,15,16,17)
(SH.3,13,14,lS,l6.1n
'0'
,.z
,.,
'0'
,.,
B:tt
,A
:'""
'01
,5., ••171
riglR Uill
-ACK
2 ALS2l
f---!kJ
·•...•
• A
1,,"LS08
(SH.·2)
SDn
SOltt
SLlI'i
: lit
SI!.J
••
......
"
:'"'
===:::
507
ISH. 5)
(SH.5)
(SH.14)
(SH.3)
ROO
'"
29
"27
00
DI
D2
01
" "'
Z2
I
17
"'''
RI ..
-DHA"""
-XMEHW
-Dt1A2CS
H
1
"
I
~oUy.,
EOP
...
Dr;
g~
OREG2
11
OREal
~
!ET
I~ ~
, 'l'
"CO,
~g
...18'
AEN'I
"., ~
'"
"" ""
""
I1fI'
~
I~S08
Z
LstlZ
1)110
,
00
.
.
"'"
,,.,
~g~
~g~
D7
:=::ii :::.
f.-----l.l "
i-------'"
.,
(SH.12)
'"
""
'"
~
,
f:'...
-"
(SH.13)- DHA HEttI:
(SH.3)
PULL"
(SH.3)
0I1A (LI
."
OS,
,"
I
.
,
'i
'ir. l51Z'i
'iUJq to
r
1'1
l'i
Ito
17
R5Z
Zl
l:"
"'"
~
:J:~:;:
I
~
I
-RESET
=
a.
(SH.5)
(SH,2)
e
......
I~
'"'
g
L==:I 0 UII'I
HRQI
do
(SHt)
(8H.4)
(8H.4)
'"'
-lOW
-lOR
-lIE'"
-",""
SA'
(SH.19) +IOCHRO't
~
%"
.
A
:
US'I
I
"
~F=T
XBIE
,
,
~
Q
Q!';
f:' T'," J~
~
-IJoIAAEN
~3if.
-to;
00
U'J'I
to
(SH.2.6l
(SH.2.3.6,7.13,15.17)
LHRQ I (SH.20)
SDCLk (SH.2t)
UIZI
9 1
:18
'I
1
(SH.l)
I
"
1 A
8 n
'i~I'j
(SH.l)
1M
I
~'es,,,
00
l
a
.,
RN'i-Io;
If
(SH.t)
(SH.13)
(SH.5)
.,
:~:09E
r
.Alto
'"
'"""
'"
'"
'"
1'1
U.'
leo RSO
(SH.5)
(SH.5)
(SH.5)
h
HOO
HOI
HOZ
HOl
,"
"
"", """
""
.,
IOCLRQ'J
UIO'J
IJCLI~8
~
~
'U"'i
'i ALSOZ
;:) IJCII ~
-XICW (SH.l,3,13.15,16.17)
-11M (SH.l,12.13.15,18,17)
-xt£HW (SH.13,21)
-XI'EHR(SH.6,9.10)
+DI'IA ROV (SH. 13)
b
I
Type 2 512KB Planar (Sheet 14 of 21)
L NOIl~HS
I"'"
(SH.1S)
S.. dDATA-----------------------~
I
I"'"
I"'"
W
~
~
m
=
e
~.
Q.
el'j9A
(SH.1!!)
(SH.tS)
(SH.t9)
f
(SH.tS)
(SH.t:!!)
(SH.t2)
I
(SH.t2)
(SH.14)
(SH.14J
(SH.14)
(SH.:!)
ISH.51
(SH.17)
(SH.t9)
(SH.tS)
(SH.t8)
. (SH.tS)
(SH.S)
(SH.tS)
(SH.ts)
(SH.t2)
OPT aUF
18'IRO
=.~ --------uii1
...,,.,,
,-
U...
~IRI
-
INTI-ll
~::~
'"
'"
ll:J ::;
Il107
-MltleS
.::!1M
xx.,••
x.,
xXOl
m,...
.,
~
~
ill
RN'j-l
SP/EN II>
"'t!-".,
AO
"INTA
DO
iOl
GN°h
.,
.,.,."
91 01
..
XI"
XII7
-1I0R
-"""
".
CASO~
CASt 11
.7
-INTI.
(SH.20)
(HASTER)C"52
""
,
':il(
IRIIIO
IRQII
....,,
....
(SH.9)
m
GNO'"
.,
,
~
~ ~
0
,
'"
"
...
-lNnrzcs
r'
t::::::::tt"~"IIO
2:~~ ~ g~H. n ==tljt=====
= _
Tiff 2~TE·5PI(
J
1.19tfHZ
I
I
~:1
.
.
I
(SLA'"
---r-- IIr
.
I~:;
XDI
. r.·",~.
t====If
-T/ces
eLK 0
II
Dl
If
If
g~
X[)6
2
'n
Db
I
(SH.tll)
T!F
Uo;Z
!{C
-
'co
lY~
Ilun
........
~
(SH.tB)
(SH.t)
,
..'"
----.--Jes:
..=!.l.Ql!.
IN'
21
-
1
01
"
Type 2 512KB Planar (Sheet 15 of 21)
-:-
(SH.t5)
(SH.te)
W)~;::§'
~~~~
~
;~e. '::~I:I-
I
I
r::::.-
~ ~
r-
-....
-
~H'
f------<,;:-"
C'I
o
E~
CD
....
....CD
~
CD
.s::
-..
en
~L
JJJJ
~;;:::i'~
ftI
C
ftI
.
~
a:
~
3
m
_N
.d
I----
JJ ~li
"~~~~
i:~£~
~
~
~~
~
~
J
~
~
C'I
....
~a
~
It)
C'I
CD
C.
3
i
~~I~~~~
~;e"'lC
~
. .
1~1~t:l5l
852!l::\
~!!'
g~8S
----
~
.I~ .e .~
~"
~~~:
aiieHHii
~~~W)
!' ~;
ii:I:i
@.f!1.~i8.
i
~
'"
~
~
~
~
'~"
Oii?§'~
'~"
iiii
!2!2!!He
System Board
1-113
~
"'"
""'"
~~~
III
@..@..@..
.
e
l
-,..
N
o
~
.....
,..
....
5 ~~
~H'
G)
G)
.c
~
...IV
c:
IV
ii:
r:D
~
N
,..
It)
N
G)
C.
~
~i3'~~~
~~~~~
1-114
System Board
+s
Jf6
*JR
0+1j
~on ~ ~~n
,)11
:n
D+'i
t ~~n
Jill
(SH.2)
I
(SH.2l
(SH.4)
I
(SH.4)
(SH.2)
(SH.2)
SOl
se'
SOl!
SOl
SOl<
501"
SOl'
SIH'
LAlI
LAlO
SO""
-I1EMR
-MEMW
-DAekO
I
-OACK'5
-DACK6
(SH.13)
-""""
JIO
.•~~~~~~~~~~~~~~::~~;;~~~(I!'r-"fIli.O;;::;"'
(I.'"
lA21
tAU
(SH.13)
(O,"EOO'
(12
en
0& PIN)
I""'
002
m
-HEM
CS 16
(SH. 4.12.' 3)
(SH.5)
-
cs
(SH.6)
10
Ib
m
CIS
009
011
(02
"((j"j
DRQO
DRG c;
ORO 6
ORG 1
(SH.13)
(SH.13)
(SH.13)
(SH.13)
DOlt
00')
006
JAQID
IRQ II
(SH.15)
007
IRGIe;
DI~
(oif
~
Ole;
CIO
ill
coo
001
IRQI2
IRQI4
t
(SH.15)
D08
rna
QL.
0,"
~+s
(SH.4)
(SH.4)
(SH.4)
fa
=
l
......
...u.
LAt9
~
( 06
n
1
m
110 (ONNE(TOR FROM
SOARD TOP SlOE:
I
801~.
AOI
JI (8 CONN. TOTALl
*FOR FUTURE USE
81t •• All
OOln(OI
DlSUCI8
I
Type 2 51 2KB Planar (Sheet 18 of 21)
l NOll::J3S
....
....
....
I
~
(SH.2)
I
(SH.2)
!f
;.
(SH.4)
500
501
S02
SO,
SO,
SO,
506
507
SAO
SAl
SAl
SA'
5,"
e
5. .
SA.
SA7
SAO
SA.
SA'O
SAil
SAIZ
=:I
a
Q
SAH
SAIIt
5AI5
5... 16
SAI1
(SH:4)
(SH.2)
(SH.2)
(SH.7)
(SH.7)
(SH.3)
(SH.9)
(SH.13)
(SH.3)
(SH.3)
SAI8
SAIQ
-lOR
-lOW
AO'
AOO
A 7
A
AO'
AO'
AO'
A02
AEN
(SH.20)
(SH.13)
(SH.13)
(SH.13)
-REFRESH
-DA(I( I
-DACK 2
(SH.3)
(SH.21)
OAlE
0"
-DAtI( '3
J'
A..
J.
+,
A"
't.7K
IKD
J'f-
J8 Aoci
A
Al7
A •
A2S
A
A"
All
'0'
."
."
."
."
AI.
A 10
AI7
AIS
AI4
AI>
AI>
.,.
BlO
'0.
• 14
m
+12
12
."
Bl6
.06
10"J
(X22)
6O.
I
60'
~
I
1)
(SH.1S)
IRQIf
IRQ ')
IRQ6
IRQ 7
(SH.1S)
+,
1,o41"'
c••
CIOO
l'lOPF
I'SOPF
(X'32)
I
I
Type 2 512KB Planar (Sheet 19 of 21)
U
ClOI
(SH.13)
(SH.13)
(SH.13)
+PWRGOOD
(SH.l,17)
2
POWER
~N.
POWER GOOD
1
+S voe
I<)()PF
~,~ ~~~
l.~
~
I r='
_, 4ro
Rf-
PSO
~
G
BOI
81O
."
IRQ
ORQ2
BO'
'0'
81'
(SH.3)
(SH.l1,14,20)
DRQ I
r
.,..,.
-I/O CH (I(
JIO CH ROY
IRQ 1
821
AI.
SYS( l K
osc
~,
A
BlO
B'
B27
All
B02
RESET DRY
+,
J'
,
BI
BII
, Ie
J2
A1I
-s MEHR
-s HEMW
JI
~
~
~
~
~
[
•
~
-.,..
-..
C'i
o
oC'i
CD
CD
-...
.i:
en
ca
c
ca
a::
In
~
C'i
.,..
It)
C'i
CD
c.
r:
~
"
~
~
~
u
u
~
"~
~
"~
~O>
~'!1
"~
~
System Board
~
1-117
~
-I
~
~~~
5
v
v
~
.
'--~
-I,.
~
C\I
o
,..
~
5
u
,..
a
C\I
....CD
CD
.c
-...
en
IV
c::
IV
a::
m
~
C\I
,..
It)
C\I
CD
Q.
~
~
.
,
~
~
•
"
~
~
«
•
"
1-118
.
~.
.0 •
~~
---
:iii
!1!£.!a-
."
:e
System Board
~~ ~
~M'"
ii:i
@.!Q.!1
!~
~
."" ."
~
SECTION 2. COPROCESSOR
Contents
Description ...................................... 2-3
Programming Interface
............................• 2-3
Hardware Interface ................................ 2-4
Coprocessor
2-1
Notes:
2-2
Coprocessor
Description
The IBM Personal Computer AT Math Coprocessor enables the
IBM Personal Computer AT to perform high-speed arithmetic,
logarithmic functions, and trigonometric operations.
The coprocessor works in parallel with the microprocessor. The
parallel operation decreases operating time by allowing the
coprocessor to do mathematical calculations while the
microprocessor continues to do other functions.
The coprocessor works with seven numeric data types, which are
divided into the following three classes:
•
Binary integers (3 types)
•
Decimal integers (1 type)
•
Real numbers (3 types)
Programming Interface
The coprocessor offers extended data types, registers, and
instructions to the microprocessor.
The coprocessor has eight 80-bit registers, which provides the
equivalent capacity of forty 16-bit registers. This register space
allows constants and temporary results to be held in registers
during calculations, thus reducing memory access and improving
speed as well as bus availability. The register space can be used as
a stack or as a fixed register set. When used as a stack, only the
top two stack elements are operated on.
Coprocessor
2-3
The following figure shows representations of large and small
numbers in each data type.
Significant
Digits
Bits (Decimal) Approximate Range (Decimal)
Data Type
Word Integer
16
4
Short Integer
32
9
Long Integer
64
19
Packed Decimal
80
18
32
6-7
64
80
Short Real
Long Real
*
*
Temporary Real
-32,768 :5 x :5 +32,767
-2x10 9
-9x10 18
:5 x :5 +2x 10 9
:5 x:5 +9x1018
-9 .. 99 :5 x :5 +9 .. 99 (18 digits)
8. 43x 10- 37
:5 x :5 3. 37x 10 38
15-16
4. 19x 10- 307
:5 x :5 1.67xl0 308
19
3. 4x 10-4932
:5 x :5 1. 2x 10 4932
Data Types
* The Short Real and Long Real data types correspond to the
single and double precision data types.
Hardware Interface
The coprocessor uses the same clock generator as the
microprocessor. It works at one-third the frequency of the system
microprocessor (2.66 MHz). The coprocessor is wired so that it
functions as an I/O device through I/O port addresses hex OOF8,
OOFA, and OOFC. The microprocessor sends OP codes and
operands through these I/O ports. The microprocessor also
receives and stores results through the same I/O ports. The
coprocessor's I busy I signal informs the microprocessor that it is
executing; the microprocessor's Wait instruction forces the
microprocessor to wait until the coprocessor is finished executing.
The coprocessor detects six different exception conditions that
can occur during instruction execution. If the appropriate
exception mask within the coprocessor is not set, the coprocessor
sets its error signal. This error signal generates a hardware
interrupt (interrupt 13) and causes the I busy I signal to the
coprocessor to be held in the busy state. The I busy I signal may
2-4
Coprocessor
be cleared by an 8-bit I/O Write command to address hex FO
with DO through D7 equal to O.
The power-on self-test code in the system ROM enables IRQ 13
and sets up its vector to point to a routine in ROM. The ROM
routine clears the I busy I signal's latch and then transfers control
to the address pointed to by the NMI interrupt vector. This
allows code written for any IBM Personal Computer to work on
an IBM Personal Computer AT. The NMI interrupt handler
should read the coprocessor's status to determine if the NMI was
caused by the coprocessor. If the interrupt was not generated by
the coprocessor, control should be passed to the original NMI
interrupt handler.
The coprocessor has two operating modes similar to the two
modes of the microprocessor. When reset by a power-on reset,
system reset, or an I/O write operation to port hex OOF 1, the
coprocessor is in the real address mode. This mode is compatible
with the 8087 Math Coprocessor used in other IBM Personal
Computers. The coprocessor can be placed in the protected mode
by executing the SETPM ESC instruction. It can be placed back
in the real mode by an I/O write operation to port hex 00F1, with
D7 through DO equal to O.
The coprocessor instruction extensions to the microprocessor can
be found in Section 6 of this manual.
Detailed information for the internal functions of the Intel 80287
Coprocessor can be found in books listed in the bibliography.
Coprocessor
2-5
Notes:
2-6
Coprocessor
SECTION 3. POWER SUPPLY
Contents
Inputs .......................................... 3-3
Outputs ......................................... 3-4
DC Output Protection ...........•...•.............. 3-4
Output Voltage Sequencing .....•.........•.......... 3-4
No-Load Operation .......•...•.................... 3-5
Power-Good Signal .......................•........ 3-5
Load Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-5
Connectors ...................................... 3-7
Power Supply
3-1
Notes:
3-2
Power Supply
The system power supply is contained inside of the system unit
and provides power for the system board, the adapters, the
diskette drives, the fixed disk drives, the keyboard, and the IBM
Monochrome Display.
Inputs
The power supply can operate at a frequency of either 60 ±3 Hz
or 50 ±3 Hz and it can operate at 110 Vac, 5 A or 220/240 Vac,
2.5 A. The voltage is selected with the switch above the
power-cord plug at the rear of the power supply. The following
figure shows the input requirements.
Range
Voltage (Vac)
Current (Amperes)
Minimum 100
115 Vac
Maximum 5
Maximum 125
230 Vac
Minimum 200
Maximum 3.0
Maximum 240
Input Requirements
Note:
The maximum in-rush current is 100 A.
Power Supply
3-3
Outputs
The power supply provides +5, -5, + 12, and -12 Vdc. The
following figQ.re shows the load current and regulation tolerance
for these voltages. The power supply also supplies either 115 Vac
or 230 Vac for the IBM Monochrome Display.
Nominal
OU,tput
Load Current (A)
Min
Max
Regulation
Tolerance
+5
-5
+12
-12
7.0
0.0
2.5
0.0
+5% to -4%
+10% to -8%
+5% to -4%
+10% to -9%
Vdc
Vdc
Vdc
Vdc
19.8
0.3
7.3
Q.3
DC Load Requirements
DC Output Protection
If any output becomes overloaded, the power supply will switch
btf within 20 milliseconds. An overcurrent condition will not
damage the power supply.
Output Voltage Sequencing
Under normal conditions, the output voltage levels track within
300 milliseconds of ~ach other when power is applied to, or
remowd from the power supply, provided at least minimqrn.
loading is present.
.
3-4
Power Supply
No-Load Operation
No damage or hazardous conditions occur when primary power is
applied with no load on any output level. In such cases, the
power supply may switch off, and a power-on reset will be
required. The power supply requires a minimum load for proper
operation.
Power-Good Signal
The power supply provides a I power-good I signal to indicate
proper operation of the power supply.
When the supply is switched off for a minimum of one second and
then switched on, the I power-good I signal is generated, assuming
there are no problems. This signal is a logical AND of the dc
output-voltage sense signal and the ac input-voltage sense signal.
The I power-good I signal is also a TTL-compatible high level for
normal operation, or a low level for fault conditions. The ac fail
signal causes I power-good I to go to a low level at least one
millisecond before any output voltage falls below the regulation
limits. The operating point used as a reference for measuring the
one millisecond is normal operation at minimum line voltage and
maximum load.
Load Resistor
If no fixed disk drive is connected to the power supply, the load
resistor must be connected to PI O. The load resistor is a 5 ohm,
50 watt resistor.
Power Supply
3-5
The dc output-voltage sense signal holds the power-good signal
at a low level when power is switched on until all output voltages
have reached their minimum sense levels. The power-good
signal has a turn-on delay of at least 100 milliseconds but not
longer than 500 milliseconds and can drive six standard TTL
loads.
I
I
I
The following figure shows the minimum sense levels for the
output voltages.
Level
(Vdc)
Minimum (Vdc)
+5
-5
+12
-12
Sense Level
3-6
Power Supply
+4.5
-3.75
+10.8
-10.4
I
Connectors
The following figure shows the pin assignments for the
power-supply output connectors.
Load Point
Voltage (Vdc)
PSB-l
PSB-2
PSB-3
PSB-4
PSB-5
psB-6
Power Good
+5
+12
-12
Ground
Ground
Max.
Current (A)
See Note
3.B
0.7
0.3
0.0
0.0
PS9-1
PS9-2
PS9-3
PS9-4
PS9-5
PS9-6
Ground
Ground
-5
+5
+5
+5
0.0
0.0
0.3
Pl0-l
Pl0-2
Pl0-3
Pl0-4
+12
Ground
Ground
+5
0.0
0.0
P11-1
P11-2
PII-3
PII-4
+12
Ground
Ground
+5
0.0
0.0
P12-1
P12-2
P12-3
P12-4
+12
Ground
Ground
+5
1.0
0.0
0.0
0.6
3.B
3.B
3.B
2.B
I.B
2.B
I.B
DC Load Distribution
Note:
For more details, see "Power-Good Signal".
Power Supply
3-7
Notes:
3-8
Power Supply
SECTION 4. KEYBOARD
Contents
Description ...................................
Cabling ...................................
Sequencing Key Code Scanning .................
Keyboard Buffer ............................
Keys ..................... " ...............
4-3
4-3
4-3
4-3
4-4
Power-On Routine ......•......................... 4-4
Power-On Reset ............................ 4-4
Basic Assurance Test ......................... 4-4
Commands from the System ..........................
Reset (Hex FF) .... ; ........................
Resend (Hex FE) ............................
No-Operation (NaP) (Hex FD through F7) .......
Set Default (Hex F6) .........................
Default Disable (Hex F5) .....................
Enable (Hex F4) ............................
Set Typematic Rate/Delay (Hex F3) ............
No-Operation (NaP) (Hex F2 through EF) .......
Echo (Hex EE) ........... ;.................
Set/Reset Mode Indicators (Hex ED) ............
4-5
4-5
4-6
4-6
4-6
4-6
4-6
4-7
4-8
4-8
4-8
Commands to the System ............................ 4-9
Resend (Hex FE) ............................ 4-9
ACK (Hex FA) ........ ; .................... 4-9
Overrun (Hex 00) .......................... 4-10
Diagnostic Failure (Hex FD) .................. 4-10
Break Code Prefix (Hex FO) .................. 4-10
BAT Completion Code (Hex AA) .............. 4-10
ECHO Response (Hex EE) ................... 4-10
Keyboard Scan-Code Outputs ....................... 4-11
Keyboard
4-1
Clock and Data Signals ...................•........ 4-12
Keyboard Data Output ...................... 4-13
Keyboard Data Input ........................ 4-13
Keyboard Layouts .............•..................
FrenchKeyboard ...........................
German Keyboard ..........................
Italian Keyboard ...........................
Spanish Keyboard ..........................
u.K. English Keyboard ......................
U.S. English Keyboard .......................
4-15
4-16
4-17
4-18
4-19
4-20
4-21
Specifications ................................... 4-22
Size ..................................... 4-22
Weight ................................... 4-22
Logic Diagram
4-2
Keyboard
4-23
Description
The keyboard is a low-profile, 84-key, detachable unit. A
bidirectional serial interface in the keyboard is used to carry
signals between the keyboard and system unit.
Cabling
The keyboard cable connects to the system board through a 5-pin
DIN connector. The following figure lists the connector pins and
their signals.
DIN Connector Pins
Signal Name
1
+KBD ClK
+KBD DATA
Reserved
Ground
+5.0 Vdc
2
3
4
5
Sequencing Key Code Scanning
The keyboard is able to detect all keys that are pressed, and their
scan codes will be sent to the interface in correct sequence,
regardless of the number of keys held down. Keystrokes entered
while the interface is inhibited (when the key lock is on) will be
lost. Keystrokes are stored only when the keyboard is not
serviced by the system.
Keyboard Buffer
The keyboard has a 16-character first-in-first-out (FIFO) buffer
where data is stored until the interface is ready to receive it.
A buffer-overrun condition will occur if more than sixteen codes
are placed in the buffer before the first keyed data is sent. The
seventeenth code will be replaced with the overrun code, hex 00.
(The 17th position is reserved for overrun codes). If more keys
are pressed before the system allows a keyboard output, the data
will be lost. When the keyboard is allowed to send data, the
Keyboard
4-3
characters iIi the buffer will be sent as in normal operation, and
new data entered will be detected and sent.
Keys
All keys are classified as make/break, which means when a key is
pressed, the keyboard sends a make code for that key to the
keyboard controller.. When the key is released, its break code is
sent (the break code for a key is its make code preceded by hex
FO).
All keys are typematic. When a key is pressed and held down, the
keyboard continues to send the make code for that key until the
key is released. The rate at which the make code is sent is known
as the typematic rate (The typematic rate is described under "Set
Typematic Rate/Delay"). When two or more keys are held
down, only the last key pressed repeats at the typematic rate.
Typematic operation stops when the last key pressed is released,
even if other keys are still held down. When a key is pressed and
held down while the interface is inhibited, only the first make
code is stored in the buffer. This prevents buffer overflow as a
result of typematic action.
Power-On Routine
Power-On Reset
The keyboard logic generates a POR when power is applied to the
keyboard. The POR lasts a minimum of 300 milliseconds and a
maxImum of 9 secorids.
Note: The keyboard may issue a false return during the first
200 milliseconds after the +5 Vdc is established at the 90%
level. Therefore, the keyboard interface is disabled for this
period.
4-4
Keyboard
Basic Assurance Test
Immediately following the POR, the keyboard executes a basic
assurance test (BAT). This test consists of a checksum of all
read-only memory (ROM), and a stuck-bit and addressing test of
all random-access memory (RAM) in the keyboard's
microprocessor. The mode indicators-three light emitting diodes
(LEDs) on the upper right-hand corner of the keyboard-are
turned on then off, and must be observed to ensure they are
operational.
Execution of the BAT will take from 600 to 900 milliseconds.
(This is in addition to the time required for the POR.)
The BAT can also be started by a Reset command.
After the BAT, and when the interface is enabled ( I clock I and
data lines are set high), the keyboard sends a completion code
to the interface-either hex AA for satisfactory completion or
hex FC (or any other code) for a failure. If the system issues a
Resend command, the keyboard sends the BAT completion code
again. Otherwise, the keyboard sets the keys to typematic and
make/break.
I
I
Commands from the System
The commands described below may be sent to the keyboard at
any time. The keyboard will respond within 20 milliseconds.
Note: The following commands are those sent by the
system. They have a different meaning when issued by the
keyboard.
Reset (Hex FF)
The system issues a Reset command to start a program reset and a
keyboard internal self-test. The keyboard acknowledges the
command with an I acknowledge I signal (ACK) and ensures the
Keyboard
4-5
system accepts the ACK before executing the command. The
system signals acceptance of the ACK by raising the clock and
data for a minimum of 500 microseconds. The keyboard is
disabled from the time it receives the Reset command until the
ACK is accepted or until another command overrides the previous
one. Following acceptance of the ACK, the keyboard begins the
reset operation, which is similar to a power-on reset. The
keyboard clears the output buffer and sets up default values for
typematic and delay rates.
Resend (Hex FE)
The system can send this command when it detects an error in
any transmission from the keyboard. It can be sent only after a
keyboard transmission and before the system enables the
interface to allow the next keyboard output. Upon receipt of
Resend, the keyboard sends the previous output again unless the
previous output was Resend. In this case, the keyboard will
resend the last byte before the Resend command.
No-Operation (NOP) (Hex FD through F7)
These commands are reserved and are effectively no-operation or
NOP. The system does not use these codes. If sent, the keyboard
will acknowledge the command and continue in its prior scanning
state. No other operation will occur.
Set Default (Hex F6)
The Set Default command resets all conditions to the power-on
default state. The keyboard responds with ACK, clears its output
buffer, sets default conditions, and continues scanning (only if the
keyboard was previously enabled).
Default Disable (Hex F5)
This command is similar to Set Default, except the keyboard stops
scanning and awaits further instructions.
4-6
Keyboard
Enable (Hex F4)
Upon receipt of this command, the keyboard responds with ACK,
clears its output buffer, and starts scanning.
Set Typematic Rate/Delay (Hex F3)
The system issues this command, followed by a parameter, to
change the typematic rate and delay. The typematic rate and
delay parameters are determined by the value of the byte
following the command. Bits 6 and 5 serve as the delay
parameter and bits 4,3,2, 1, and 0 (the least-significant bit) are
the rate parameter. Bit 7, the most-significant bit, is always O.
The delay is equal to 1 plus the binary value of bits 6 and 5
multiplied by 250 milliseconds ±20%. The period (interval from
one typematic output to the next) is determined by the following
equation:
Period = (8 + A) X (2B ) X 0.00417 seconds, where A = binary
value of bits 2, 1, and 0 and B = binary value of bits 4 and 3.
The typematic rate (make code per second) is l/period. The
period is determined by the first equation above. The following
table results.
Bit 4 - 0
Typematic
Rate ± 20%
Bit 4 - 0
Typematic
Rate ± 20%
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
30.0
26.7
24.0
21.8
20.0
18.5
17.1
16.0
15.0
13.3
12.0
10.9
10.0
9.2
8.0
8.0
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
7.5
6.7
6.0
5.5
5.0
4.6
4.3
4.0
3.7
3.3
3.0
2.7
2.5
2.3
2.1
2.0
Keyboard
4-7
The keyboard responds to the Set Typematic Rate Delay
command with an ACK, stops scanning, and waits for the rate
parameter. The keyboard responds to the rate parameter with
another ACK, sets the rate and delay, and continues scanning (if
the keyboard was previously enabled). If a command is received
instead of the rate parameter, the set-typematic-rate function
ends with no change to the existing rate, and the new command is
processed. However, the keyboard will not resume scanning
unless instructed to do so by an Enable command.
The default rate for the system keyboard is as follows:
The typematic rate = 10 characters per second ± 20% and the
delay = 500 ms ±20%.
No-Operation (NOP) (Hex F2 through EF)
These commands are reserved and are effectively no-operation
(NOP). The system does not use these codes. If sent, the
keyboard acknowledges the command and continues in its prior
scanning state. No other operation will occur.
Echo (Hex EE)
Echo is a diagnostic aide. When the keyboard receives this
command, it issues a hex EE response and continues scanning if
the keyboard was previously enabled.
Set/Reset Mode Indicators (Hex ED)
Three mode indicators on the keyboard are accessible to the
system. The keyboard activates or deactivates these indicators
when it receives a valid command from the system. They can be
activated or deactivated in any combination.
The system remembers the previous state of an indicator so that
its setting does not change when a command sequence is issued to
change the state of another indicator.
4-8
Keyboard
A Set/Reset Mode Indicators command consists of two bytes.
The first is the command byte and has the following bit setup:
11101101 - hex ED
The second byte is an option byte. It has a list of the indicators to
be acted upon. The bit assignments for this option byte are as
follows:
Bit
0
I
2
3-7
Indicator
Scroll Lock Indicator
Num Lock Indicator
Caps Lock Indicator
Reserved (must be O's)
Note: Bit 7 is the most-significant bit; bit 0 is the
least-significant.
The keyboard will respond to the Set/Reset Mode Indicators
command with an ACK, discontinue scanning, and wait for the
option byte. The keyboard will respond to the option byte with
an ACK, set the indicators, and continue scanning if the keyboard
was previously enabled. If another command is received iIi place
of the option byte, execution of the function of the Set/Reset
Mode Indicators command is stopped with no change to the
indicator states, and the new command is processed. Then
scanning is resumed.
Commands to the System
The commands described here are those sent by the keyboard.
They have a different meaning when issued by the system.
Resend (Hex FE)
The keyboard issues a Resend command following receipt of an
invalid input, or any input with incorrect parity. If the system
sends nothing to the keyboard, no response is required.
Keyboard
4-9
ACK(HexFA)
The keyboard issues an ACK response to any valid input other
than an Echo or Resend command. If the keyboard is interrupted
while sending ACK, it will discard ACK and accept and respond
to the new command.
Overrun (Hex 00)
An overrun character is placed in position 17 of the keyboard
buffer, overlaying the last code if the buffer becomes full. The
code is sent to the system as an overrun when it reaches the top of
the buffer.
Diagnostic Failure (Hex FD)
The keyboard periodically tests the sense amplifier and sends a
diagnostic failure code if it detects any problems. If a failure
occurs during BAT, the keyboard stops scanning and waits for a
system command or power-down to restart. If a failure is
reported after scanning is enabled, scanning continues.
Break Code Prefix (Hex FO)
This code is sent as the first byte of a 2-byte sequence to indicate
the release of a key.
BAT Completion Code (Hex AA)
Following satisfactory completion of the BAT, the keyboard
sends hex AA. Hex FC (or any other code) means the keyboard
microprocessor check failed.
ECHO Response (Hex EE)
This is sent in response to an Echo command from the system.
4-10
Keyboard
Keyboard Scan-Code Outputs
Each key is assigned a unique 8-bit, make scan code, which is sent
when the key is pressed. Each key also sends a break code when
the key is released. The break code consists of two bytes, the
first of which is the break code prefix, hex FO; the second byte is
the same as the make scan code for that key.
The typematic scan code for a key is the same as the key's make
code. Refer to "Keyboard Layouts" beginning on page 4-15 to
determine the character associated with each key number.
The following figure lists the positions of the keys and their make
scan codes.
Key
Number
Make Code
Key
Number
Make Code
Key
Number
Make Code
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
30
OE
16
lE
26
25
2E
36
30
3E
46
45
4E
55
50
66
00
15
10
24
20
2C
35
3C
43
44
40
54
5B
14
31
32
33
34
35
36
37
38
39
40
41
43
44
46
47
48
49
50
51
52
53
54
55
57
58
61
64
65
66
1C
lB
23
2B
34
33
3B
42
4B
4c
52
5A
12
lA
22
21
2A
32
31
3A
3C
49
4A
59
11
29
58
06
OC
67
68
69
70
71
OB
OA
09
05
04
03
83
01
76
6C
6B
69
72
73
74
90
91
92
93
95
96
97
98
99
100
101
102
103
104
105
106
107
108
77
75
73
72
70
7E
70
74
7A
71
84
7C
7B
79
Note: Break codes consists of two bytes; the first is hex FO,
the second is the make scan code for that key.
Keyboard
4-11
Clock and Data Signals
The keyboard and system communicate over the clock and
I data I lines. The source of each of these lines is an
open-collector device on the keyboard that allows either the
keyboard or the system to force a line to a negative level. When
no communication is occurring, both the clock and data lines
are at a positive level.
I
I
I
I
I
I
Data transmissions to and from the keyboard consist of 11-bit
data streams that are sent serially over the data line. The
following figure shows the structure of the data stream.
I
Bit
I
Function
Start bit (always 1)
Data bit 0 (least-significant)
Data bit 1
Data bit 2
Data bit 3
Data bit 4
Data bit 5
Data bit 6
Data bit 7 (most-significant)
Parity bit (always odd)
Stop bit (always 1)
1
2
3
4
5
6
7
8
9
10
11
The parity bit is either 1 or 0, and the eight data bits plus the
parity bit always equals an odd number.
When the system sends data to the keyboard, it forces the data
line to a negative level and allows the clock line to go to a
positive level.
I
I
I
I
When the keyboard sends data to~ or receives data from the
system, it generates the clock signal to time the data. The
system can prevent the keyboard from sending data by forcing the
clock line to a negative level; the data line may go high or low
during this time.
I
I
I
I
I
During the BAT, the keyboard allows the
lines to go to a positive level.
4-12
Keyboard
I
I
clock and data
I
I
I
Keyboard Data Output
When the keyboard is ready to send data, it first checks for a
keyboard-inhibit or system request-to-send status on the I clock I
and data lines. If the clock line is low (inhibit status), data is
stored in the keyboard buffer. If the I clock I line is high and
data is low (request-to-send), data is stored in the keyboard
buffer, and the keyboard receives system data.
I
I
I
I
I
I
If I clock I and I data I are both high, the keyboard sends the 0
start bit, 8 data bits, the parity bit and the stop bit. Data will be
valid after the rising edge and before the falling edge of the
I clock I line.
During transmission, the keyboard checks the
clock line for a positive level at least every 60 milliseconds. If
the system lowers the I clock I line from a positive level after the
keyboard starts sending data, a condition known as line contention
occurs, and the keyboard stops sending data. If line contention
occurs before the rising edge of the tenth clock (parity bit), the
keyboard buffer returns the data and clock lines to a positive
level. If contention does not occur by the tenth clock, the
keyboard completes the transmission.
I
I
I
I
I
I
Following a transmission, the system can inhibit the keyboard
until the system processes the input or until it requests that a
response be sent.
Keyboard Data Input
When the system is ready to send data to the keyboard, it first
checks if the keyboard is sending data. If the keyboard is sending
but has not reached the tenth clock, the system can override the
keyboard output by forcing the I clock I line to a negative level.
If the keyboard transmission is beyond the tenth clock, the system
must receive the transmission.
If the keyboard is not sending, or if the system elects to override
the keyboard's output, the system forces the clock line to a
negative level for more than 60 microseconds while preparing to
send. When the system is ready to send the start bit ( I data I line
will be low), it allows the I clock I line to go to a positive level.
I
I
Keyboard
4-13
The keyboard checks the state of the clock line at intervals of
no less than 60 milliseconds. If a request-to-send is detected, the
keyboard counts 11 bits. After the tenth bit, the keyboard forces
the data line low and counts one more (the stop bit). This
action signals the system that the keyboard has received its data.
Upon receipt of this signal, the system returns to a ready state, in
which it can accept'keyboard output, or goes to the inhibited state
until it is ready.
I
I
I
I
Each system command or data transmission to the keyboard
requires a response from the keyboard before the system can send
its next output. The keyboard will respond within 20 milliseconds
unless the system prevents keyboard output. If the keyboard
response is invalid or has a parity error, the system sends the
command or data again. A Resend command should not be sent
in this case.
4-14
Keyboard
Keyboard Layouts
The keyboard has six different layouts:
•
French
•
German
•
Italian
•
Spanish
•
u.K. English
•
U.S. English
The following pages show the six keyboard layouts.
Keyboard
4-15
...
".
I
~
ia.
i
I
f
f
f
....""''-l
I
11 NOI13:1S
oI:lo.
....
QC
I
~
~
~
£
~r
f
rJ1
"C
....~
~
i
l
ia
.......
I
\C
t NOIl:J3S
"'"
I
=
N
~
~
~
~
e;Q.
.~
.
~
~
as.
••
~
~
~
i
a
~
\fl
i...
\Ij
=-
i
I
~
I
~
~
t> N0I1:J3S
Specifications
Size
•
Length: 540 millimeters (21.6 inches)
•
Depth: 100 millimeters (4 inches)
•
Height: 225 millimeters (9 inches)
Weight
•
2.8 kilograms (6.2 pounds)
4-22
Keyboard
~
_.
_.
o
(J'Q
0
00
)
o
A3
PARTIAL VIEW A-A
~
[I]
~
~
(J'Q
+5
PI
GND
+5 81
~N/C
• GND
r
+5
~
CI
-
UI
~-
r- A
'
iL-A
J
PI
oUI
P11
rn
1 81
I"
51)-- ,
UI
r-.. .
~ r'l
r'l
l)RI
LED I
10
PO~~~ ~~)±---!
,....!406.
"'"l
.,
l,lR1
r'l R3
l,l
LED 1
0
LED 3
01
L ____________
,~ "
O"~;W','I
__
0
0
'0
7
LARGE HOLE
f
PARTIAL VIEW 8-8
Enhancement Logic Card Assembly
oIao.
I
N
~
17 N0I1:ns
a
8
j
~ LED HOLDER
LED~
R1
LED 3
~
1
;!
Notes:
4-24
Keyboard
SECTION 5. SYSTEM BIOS
Contents
System BIOS Usage ............................... 5-3
Parameter Passing ........................... 5-4
Vectors with Special Meanings ................. 5-6
Other Read/Write Memory Usage .............. 5-8
BIOS Programming Hints .................... 5-10
Adapters with System-Accessible ROM Modules .. 5-12
Additional System Board ROM Modules ......... 5-13
Keyboard Encoding and Usage ....••..•..•...........
Character Codes ...........................
Extended Functions .........................
Shift States ................................
Special Handling ...........................
5-13
5-14
5-18
5-19
5-21
Quick Reference ...••....•........•.............. 5-24
System BIOS
5-1
Notes:
5-2
System BIOS
The basic input/output system (BIOS) resides in ROM on the
system board and provides level control for the major I/O devices
in the system and provides system services, such as time-of-day
and memory size determination. Additional ROM modules may
be placed on option adapters to provide device-level control for
that option adapter. BIOS routines enable the assembly language
programmer to perform block (disk or diskette) or character-level
I/O operations without concern for device address and
characteristics.
If the sockets labeled V17 and V37 on the system board are
empty, additional ROM modules may be installed in these
sockets. During POST, a test is made for valid code at this
location, starting at address hex EOOOO and ending at hex EFFFF.
More information about these sockets may be found under
"Additional System Board ROM Modules" on page 5-13 .
The goal of the BIOS is to provide an operational interface to the
system and relieve the programmer of concern about the
characteristics of hardware devices. The BIOS interface isolates
the user from the hardware, allowing new devices to be added to
the system, yet retaining the BIOS level interface to the device.
In this manner, hardware modifications and enhancements are not
apparent to user programs.
The IBM Personal Computer MA CR 0 Assembler manual and the
IBM Personal Computer Disk Operating System (DOS) manual
provide useful programming information related to this section.
A complete listing of the BIOS is given later in this section.
System BIOS Usage
Access to the BIOS is through program interrupts of the
microprocessor in the real mode. Each BIOS entry point is
available through its own interrupt. For example, to determine
the amount of base RAM available in the system with the
microprocessor in the real mode, INT 12H invokes the BIOS
routine for determining the memory size and returns the value to
the caller.
System BIOS
5-3
Parameter Passing
All parameters passed to and from the BIOS routines go through
the 80286 registers. The prolog of each BIOS function indicates
the registers used on the call and return. For the memory size
example, no parameters are passed. The memory size, in lK
increments, is returned in the AX register.
If a BIOS function has several possible operations, the AH
register is used at input to indicate the desired operation. For
example, to set the time of day, the following code is required:
HOV
AH,1
HOV
HOV
eX,RIGH_COUNT
INT
1AR
; function is to set time-of-day
; establish the current time
DX.LOW_COU~T
; set the time
To read the time of day:
MOV
INT
AR,O
1AR
; function is to read time-of-day
; read the timer
The BIOS routines save all registers except for AX and the flags.
Other registers are modified on return only if they are returning a
value to the caller. The exact register usage can be seen in the
prolog of each BIOS function.
~-4
System BIOS
The following figure shows the interrupts with their addresses and
functions.
Int
o
Address
Name
0-3
4-7
8-B
C-F
10-13
14-17
18-1B
lC-1F
20-23
24-27
28-2B
2C-2F
30-33
34-37
38-3B
3C-3F
40-43
44-47
48-4B
Divide by Zero
Single Step
Nonmaskable
Breakpoint
Overf low
Print Screen
Reserved
Reserved
Time of Day
Keyboard
Reserved
Communications
Communications
Alternate Printer
Diskette
Printer
Video
Equipment Check
Memory
13
14
15
4c-4F
Di skette/D i sk
Communications
Cassette
16
17
18
58-5B
5C-5F
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
19
lA
lB
lC
lD
IE
1F
50-53
54-57
60-63
64-67
68-6B
6C-6F
70-73
74-77
78-7B
7C-7F
Keyboard
Printer
Resident Basic
Bootstrap
Time of Day
Keyboard Break
Timer Tick
Video Initialization
Diskette Parameters
Video Graphics Chars
BIOS Entry
D11
D11
NMI I NT
D11
D11
PRINT SCREEN
D11
D11
TIMER INT
KB INT
Dn
D11
D 11
D11
DISK INT
D11
VIDEO 10
EQUIPMENT
MEMORY SIZE
DETERMINEDISKETTE 10
RS232 10CASSETTE
10/System
Extensions
KEYBOARD 10
PR I NTER To
F600:0000
BOOTSTRAP
TIME OF DAY
DUMMY RETURN
DUMMY-RETURN
VIDEO-PARMS
DISK BASE
o
80286-2 Program Interrupt Listing (Real Mode Only)
Note: For BIOS index, see the BIOS Quick Reference
on page 5-24 .
System BIOS
5-5
The following figure shows hardware, BASIC, and DOS reserved
interrupts.
Interrupt
Address
Function
20
21
22
23
24
25
26
27
28-3F
40-5F
60-67
68-6F
70
80-83
84-87
88-8B
8C-8F
90-93
94-97
98-9B
9C-9F
AO-FF
100-17F
180-19F
lAO-1BF
lCO-1C3
71
73
74
75
lc4-1C7
lC8-1CB
lCC-1CF
100-103
104-107
76
77
78-7F
80-85
86-FO
108-10B
10C-l0F
lEO-IFF
200-217
218-3C3
Fl-FF
3C4-3FF
DOS program terminate
DOS function call
DOS terminate address
DOS Ctrl Break exit address
DOS fatal error vector
DOS absolute disk read
DOS absolute disk write
DOS terminate, fix in storage
Reserved for DOS
Reserved for BIOS
Reserved for user program interrupts
Not used
IRQ 8 Realtime clock INT (BIOS entry
RTC I NT)
IRQ 9 \BIOS entry RE DIRECT)
IRQ 10 (BIOS entry 011)
IRQ 11 (BIOS entry 011)
IRQ 12 (BIOS entry 011)
IRQ 13 BIOS Redirect to NMI interrupt
(BIOS entry INT 287)
IRQ 14 (BIOS entry-Oil)
IRQ 15 (BIOS entry 011)
Not used
Reserved for BASIC
Used by BASIC interpreter while
BASIC is running
Not used
72
Hardware, Basic, and DOS Interrupts
Vectors with Special Meanings
Interrupt I5-Cassette I/O: This vector points to the
following functions:
•
Device open
•
Device closed
•
Program termination
•
Event wait
•
Joystick support
5-6
System BIOS
•
System Request key pressed
•
Wait
•
Move block
•
Extended memory size determination
•
Processor to protected mode
Additional information about these functions may be found in the
BIOS listing.
Interrupt tB-Keyboard Break Address: This vector points to
the code that is executed when the Ctrl and Break keys are
pressed. The vector is invoked while responding to a keyboard
interrupt, and control should be returned through an IRET
instruction. The power-on routines initialize this vector to point
to an IRET instruction so that nothing will occur when the Ctrl
and Break keys are pressed unless the application program sets a
different value.
This routine may retain control with the following considerations:
•
The Break may have occurred during interrupt processing, so
that one or more End of Interrupt commands must be sent to
the 8259 controller.
•
All 110 devices should be reset in case an operation was
underway at the same time.
Interrupt t C-Timer Tick: This vector points to the code that
will be executed at every system-clock tick. This vector is
invoked while responding to the timer interrupt, and control
should be returned through an IRET instruction. The power-on
routines initialize this vector to point to an IRET instruction, so
that nothing will occur unless the application modifies the pointer.
The application must save and restore all registers that will be
modified.
Interrupt tD-Video Parameters: This vector points to a data
region containing the parameters required for the initialization of
the 6845 on the video adapter. Notice that there are four
System BIOS
5-7
separate tables, and all four must be reproduced if all modes of
operation are to be supported. The power-on routines initialize
this vector to point to the parameters contained in the ROM video
routines.
Interrupt IE-Diskette Parameters: This vector points to a
data region containing the parameters required for the diskette
drive. The power-on routines initialize this vector to point to the
parameters contained in the ROM diskette routine. These default
parameters represent the specified values for any IBM drives
attached to the system. Changing this parameter block may be
necessary to reflect the specifications of other drives attached.
Interrupt IF-Graphics Character Extensions: When
operating in graphics modes 320 x 200 or 640 x 200, the
read/write character interface will form a character from the
ASCII code point, using a set of dot patterns. ROM contains the
dot patterns for the first 128 code points. For access to the
second 128 code points, this vector must be established to point
at a table of up to 1K, where each code point is represented by 8
bytes of graphic information. At power-on time, this vector is
initialized to 000:0, and the user must change this vector if the
additional code points are required.
Interrupt 40-Reserved: When a Fixed Disk and Diskette Drive
Adapter is installed, the BIOS routines use interrupt 40 to
revector the diskette pointer.
Interrupt 41 and 46-Fixed Disk Parameters: These vectors
point to the parameters for the fixed disk drives, 41 for the first
drive and 46 for the second. The power-on routines initialize the
vectors to point to the appropriate parameters in the ROM disk
routine if CMOS is valid. The drive type codes in CMOS are
used to select which parameter set the vector points to. Changing
this parameter hook may be necessary to reflect the specifications
of other fixed drives attached.
Other Read/Write Memory Usage
The IBM BIOS routines use 256 bytes of memory from absolute
hex 400 to hex 4FF. Locations hex 400 to 407 contain the base
5-8
System BIOS
addresses of any RS-232C adapters installed in the system.
Locations hex 408 to 40F contain the base addresses of any
printer adapters.
Memory locations hex 300 to hex 3FF are used as a stack area
during the power-on initialization and bootstrap, when control is
passed to it from power-on. If the user desires the stack to be in a
different area, that area must be set by the application.
The following figure shows the reserved memory locations.
Address
Mode
400-4A1
4A2-4EF
4FO-4FF
ROM BIOS
500-5FF
500
DOS
504
510-511
512-515
516-519
DOS
BASIC
BASIC
BASIC
51A-51D
BASIC
Function
See BIOS listing
Reserved
Reserved as intra-application
communication area for any app I i cat i on
Reserved for DOS and BASIC
Print screen status flag store
O=Print screen not active or successful
print screen operation
1=Print screen in progress
255=Error encountered during print
screen operation
Single drive mode status byte
BASIC's segment address store
C)dck interrupt vector segment:offset store
Break key interrupt vector segment:offset
store
Disk error interrupt vector segment:offset
store
Reserved Memory Locations
The following is the BASIC workspace for DEF SEG (default
workspace) .
Offset
Length
2E
347
30
358
2
2
2
2
6A
1
4E
1
Line number of current line being executed
Line number of last error
Offset into segment of start of program text
Offset into segment of start of variables
(end of program text 1-1)
Keyboard buffer contents
O=No characters in buffer
1=Characters in buffer
Character color in graphics mode*
Basic Workspace Variables
*Set to 1,2, or 3 to get text in colors 1-3. Do not set to O. The
default is 3.
System BIOS
5-9
Example
100 PRINT PEEK (&H2E) + 256 x PEEK (&H2F)
H
Hex 00
The following is a BIOS memory map.
Starting Address
00000
OOIEO
00400
00500
EOOOO
FOOOO
BIOS interrupt vectors
Avai lab Ie interrupt vectors
BIOS data area
User read/write memory
Read only memory
BIOS program area
BIOS Memory Map
BIOS Programming Hints
The BIOS code is invoked through program interrupts. The
programmer should not "hard code" BIOS addresses into
applications. The internal workings and absolute addresses within
BIOS are subject to change without notice.
If an error is reported by the disk or diskette code, reset the drive
adapter and retry the operation. A specified number of retries
should be required for diskette reads to ensure the problem is not
due to motor startup.
When altering I/O-port bit values, the programmer should change
only those bits necessary to the current task. Upon completion,
the original environment should be restored. Failure to adhere to
this practice may cause incompatibility with present and future
applications.
Additional information for BIOS programming can be found in
Section 9 of this manual.
5-10
System BIOS
Move Block BIOS
The Move Block BIOS was designed to make use of the memory
above the 1M address boundary while operating with IBM DOS.
The Block Move is done with the Intel 80286 Microprocessor
operating in the protected mode.
Because the interrupts are disabled in the protected mode, Move
Block BIOS may demonstrate a data overrun or lost interrupt
situation in certain environments.
Communication devices, while receiving data, are sensitive to
these interrupt routines; therefore, the timing of communication
and the Block Move should be considered. The following table
shows the interrupt servicing requirements for communication
devices.
Baud Rate
300
1200
2400
4800
9600
11 Bit (ms)
33.33
8.33
4.16
2.08
1. 04
9 bit (ms)
30.00
7.50
7.50
1.87
0.93
Times are approximate
Communication Interrupt Intervals
The following table shows the time required to complete a Block
Move.
Block Size
Normal
512 Byte
Maximum
64K
Buffer
Addresses
Both even
Even and odd
Both odd
Both Even
Even and odd
Both odd
Time in ms
0.98
1. 04
1. 13
37.0
55.0
72.0
Time is approximate
Move Block BIOS Timing
System BIOS
5-11
Following are some ways to avoid data overrun errors and loss of
interrupts:
•
Do not use the Block Move while communicating, or
•
Restrict the block size to 512 bytes or less while
communicating, or
•
Use even address buffers for both the source and the
destination to keep the time for a Block Move to a
minumum.
Adapters with System-Accessible ROM Modules
The ROM BIOS provides a way to integrate adapters with
on-board ROM code into the system. During POST, interrupt
vectors are established for the BIOS calls. After the default
vectors are in place, a scan for additional ROM modules occurs.
At this point, a ROM routine on an adapter may gain control and
establish or intercept interrupt vectors to hook themselves into
the system.
The absolute addresses hex C8000 through EOOOO are scanned in
2K blocks in search of a valid adapter ROM. A valid ROM is
defined as follows:
Byte 0
Hex 55
Bytel
HexAA
Byte 2
A length indicator representing the number of 512-byte
blocks in the ROM
Byte 3
Entry by a CALL FAR
A checksum is also done to test the integrity of the ROM module.
Each byte in the defined ROM module is summed modulo hex
100. This sum must be 0 for the module to be valid.
When the POST identifies a valid ROM, it does a CALL FAR to
byte 3 of the ROM, which should be executable code. The
adapter can now perform its power-on initialization tasks. The
5-12
System BIOS
adapter's ROM should then return control to the BIOS routines
by executing a RETURN FAR.
Additional System Board ROM Modules
The POST provides a way to integrate the code for additional
ROM modules into the system. These modules are placed in the
sockets marked U17 and U3 7. A test for additional ROM
modules on the system board occurs. At this point, the additional
ROM, if valid, will gain controL
The absolute addresses, EOOOO through EFFFF, are scanned in
64K blocks for a valid checksum. Valid ROM is defined as
follows:
Byte 0
Hex 55
Byte 1
HexAA
Byte 2
Not used
Byte 3
Entry by a CALL FAR
A checksum is done to test the integrity of the ROM modules.
Each byte in the ROM modules is summed modulo hex 100. This
sum must be 0 for the modules to be valid. This checksum is
located at address EFFFF.
When the POST identifies a valid ROM at this segment, it does a
CALL FAR to byte 3 of the ROM, which should be executable
code.
Keyboard Encoding and Usage
The keyboard routine, provided by IBM in the ROM BIOS, is
responsible for converting the keyboard scan codes into what will
be termed Extended ASCII. The extended ASCII codes returned
by the ROM routine are mapped to the U.S. English keyboard
System BIOS
5-13
layout. Some operating systems may make provisions for
alternate keyboard layouts by providing an interrupt replacer,
which resides in the read/write memory. This section discusses
only the ROM routine.
Extended ASCII encompasses 1-byte character codes, with
possible values of 0 to 255, an extended code for certain extended
keyboard functions, and functions handled within the keyboard
routine or through interrupts.
Character Codes
The character codes described later are passed through the BIOS
keyboard routine to the system or application program. A" -1 "
means the combination is suppressed in the keyboard routine.
The codes are returned in the AL register. See "Characters,
Keystrokes, and Color" later in this manual for the exact codes.
5-14
System BIOS
The following figure shows the keyboard layout and key
positions.
System BIOS
5-15
Key
Base Case
Uppercase
I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
~
1
2
3
4
5
6
7
8
9
0
!
@
#
$
%
A
&
*
(
)
-
+
=
\
16
17
18
19
20
21
22
23
24
25
26
27
28
30 Ctrl
31
32
33
34
35
36
37
38
39
40
41
43
44 Shift
(Left )
46
47
48
Backs)ace
(008
--+1 (009)
q
1
Backspace
(008)
I+- (*)
Q
w
w
e
r
t
y
u
i
E
R
T
Y
U
I
0
0
p
p
{
}
[
1
-1
a
s
d
f
-1
A
S
D
F
G
H
9
h
j
J
k
1
j
K
L
:
I
"
CR
-1
CR
-1
z
Z
x
c
X
C
Ctrl
-1
-1
Nul(OOO) (*)
-1
.-1
-1
RS(030)
-1
-1
-1
-1
US(03])
-1
FS(028)
Del(12])
-1
(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)
-1
-1
-1
DCl(Ol])
ETB(023)
ENQ(005)
DC2(018)
Dc4(020)
EM(025)
NAK(02])
HT(009)
SI(015)
DLE(016)
Esc(02])
GS(029)
-1
SOH(OOl)
DC3(019)
EOT(004)
ACK(006)
BEL (00])
BS(008)
LF(010)
VT( 0 11 )
FF(012)
-1
-1
LF(OlO)
-1
-1
(*)
(*)
(*)
(*)
(*)
(* )
(*)
(* )
(*)
(*)
(*)
-1
-1
(*)
(*)
(*)
(* )
(*)
(*)
(* )
(*)
(* )
-1
-1
-1
-1
SUB(026)
CAN(024)
ETX(003)
( )
( )
( )
Notes:
i*) Refer to "Extended Functions" in this section.
('*) Refer to "Special Hand 1i ng " in this section.
Character Codes (Part 1 of 2)
5-16
System BIOS
Alt
Key
49
50
51
52
53
54
55
57 Shift
(Right)
58 Alt
61
64 Caps
Lock
90
95 Num
Lock
100 Scroll
Lock
107
108
112
113
114
115
116
117
118
Base Case
Uppercase
Ctrl
Alt
(*)
(*)
(*)
(*)
-1
-1
-1
-1
-1
-1
SYN(022)
STX(002)
SO(014)
CR(013)
-1
-1
-1
-1
-1
Space
-1
-1
Space
-1
-1
Space
-1
Esc
-1
Esc
-1 (*)
Esc
Pause (**)
-1
-1
-1
-1
Break (**)
-1
Enter
Null (* )
Nu 11 (*)
Null (* )
Null (*)
Null (*)
Null (*)
Null (*)
Enter
Null (*)
Null (*)
Null (*)
Null (*)
Null (*)
Nu 11 (*)
Nu 11 (*)
v
V
b
B
N
n
m
M
,
/
<
>
?
-
(*)
-1
Null (*)
Null (*)
Null (*)
Nu 11 (*)
Null (*)
Nu 11 (*)
Null (*)
-1
Space
-1
(*)
-1
Null (*)
Null (*)
Null (*)
Null (*)
Nill ](*)
Null (*)
Null(*)
Notes:
i*) Refer to "Extended Functions" in this section.
(,,*) Refer to "Special Handling " in this section.
Character Codes (Part 2 of 2)
System BIOS
5-17
The following figure lists keys that have meaning only in Num
Lock, Shift, or Ctrl states. The Shift key temporarily reverses the
current Num Lock state.
Key
Num
Lock
91
92
7
4
Home (*)
... (*)
-1
-1
Clear Screen
Reverse Word
93
1
End (*)
-1
Erase to EOL
96
97
98
99
101
8
5
2
0
9
t (*)
Ins
Page Up (*)
-1
-1
-1
-1
-1
102
6
... (*)
-1
-1
-1
-1
-1
Top of Text
and Home
Advance Word
103
3
Pa£!e Down
-1
Erase to EOS
-
Delete (*,**)
Sys Request
104
105
106
+
Base Case
-1
t (*)
Al t
(" )
+ (*)
(** )
-1
-1
Ctrl
(*)
(*)
(*)
r)
( , *)
-1
-1
Notes:
(* ) Refer to "Extended Functions " in this section.
(**) Refer to "Special Hand 1 i ng " in this section.
Special Character Codes
Extended Functions
For certain functions that cannot be represented by a standard
ASCII code, an extended code is used. A character code of 000
(null) is returned in AL. This indicates that the system or
application program should examine a second code, which will
indicate the actual function. Usually, but not always, this second
code is the scan code of the primary key that was pressed. This
code is returned in AH.
5-18
System BIOS
The following is a list of the extended codes and their functions.
Second
Code
3
15
16-25
30-38
44-50
59-68
71
72
73
75
77
79
80
81
82
83
84-93
94-103
104-113
114
115
116
117
118
119
120-131
132
Function
Nul Character
I+- (Back-tab)
Alt Q, W, E, R, T, Y, U, 1,0, P
Alt A, S, D, F, G, H, J, K, l
Alt Z, X, C, V, B, N, M
F1 to FlO Function Keys (Base Case)
Home
t (Cursor Up)
Page Up and Home Cursor
... (Cursor left)
~ (Cursor Right)
End
t (Cursor Down)
Page Down and Home Cursor
Ins (Insert)
Del (Delete)
F11 to F20 (Shift-F1 through Shift-FlO)
F21 to F30 (Ctrl-F1 through Ctrl-F10)
F31 to F40 (Alt-F1 through Alt-F10)
Ctrl PrtSc (Start/Stop Echo to Printer)
Ctrl ... (Reverse Word)
Ctrl ~ (Advance Word)
Ctrl End (Erase to End of line-EOl)
Ctrl PgDn (Erase to End of Screen-EOS)
Ctrl Home (Clear Screen and Home)
Alt 1,2, 3, 4, 5,6,7,8,9,0, -, = keys 2-13
Ctrl PgUp (Top 25 lines of Text and Cursor Home)
Keyboard Extended Functions
Shift States
Most shift states are handled within the keyboard routine, and are
not apparent to the system or application program. In any case,
the current status of active shift states is available by calling an
entry point in the BIOS keyboard routine. The following keys
result in altered shift states:
Shift: This key temporarily shifts keys 1 through 13, 15 through
29,31 through 41, and 46 through 55, to uppercase (base case if
in Caps Lock state). Also, the Shift temporarily reverses the
Num Lock or non-Num Lock state of keys 91 through 93, 96, 98,
99, and 101 through 104.
System BIOS
5-19
CtrI: This key temporarily shifts keys 3, 7, 12, 15, 17 through 29,
31 through 39, 43, 46 through 52, 91 through 93, and 101
through 103 to the Ctrl state. The Ctrl key is also used with the
Alt and Del keys to cause the system-reset function; with the
Scroll Lock key to cause the break function; and with the Num
Lock key to cause the pause function. The system-reset, break,
and pause functions are described under "Special Handling" later
in this section.
AIt: This key temporarily shifts keys 1 through 13, 17 through
26, 31 through 39, and 46 through 52 to the Alt state. The Alt
key is also used with the Ctrl and Del keys to cause a system
reset.
The Alt key also allows the user to enter any character code from
1 to 255.
Note: Character codes 97-122 will display uppercase
with Caps Lock activated.
The user holds down the Alt key and types the decimal value of
the characters desired on the numeric keypad (keys 91 through
93,96 through 99, and 101 through 103). The Alt key is then
released. If the number is greater than 255, a modulo;..256 value
is used. This value is interpreted as a character code and is sent
through the keyboard routine to the system or application
program. Alt is handled internal to the keyboard routine.
Caps Lock: This key shifts keys 17 through 26,31 through 39,
and 46 through 52 to uppercase. When Caps Lock is pressed
again, it reverses the action. Caps Lock is handled internal to the
keyboard routine. When Caps Lock is pressed, it changes the
Caps Lock Mode indicator. If the indicator was on, it will go off;
and if it was off, it will go on.
Scroll Lock: When interpreted by appropriate application
programs, this key indicates that the cursor-control keys will
cause windowing over the text rather than moving the cursor.
When the Scroll Lock key is pressed again, it reverses the action.
The keyboard routine simply records the current shift state of the
Scroll Lock key. It is the responsibility of the application
program to perform the function. When Scroll Lock is pressed, it
5-20
System BIOS
changes the Scroll Lock Mode indicator. If the indicator was on,
it will go off; and if it was off, it will go OIl.
Nom Lock: This key shifts keys 91 through 93, 96 through 99,
and 101 through 104 to uppercase. When Num Lock is pressed
again, it reverses the action. Num Lock is handled internal to the
keyboard routine. When Num Lock is pressed, it changes the
Num Lock Mode indicator. If the indicator was on, it will go off;
if it was off, it will go on.
If the keyboard Num Lock Mode indicator and the system get out
of synchronization, pressing the key combination of Shift and
Num Lock will synchronize them. This key combination changes
the Num Lock bit in the keyboard memory, but sends only the
scan code for the Shift key to the system.
Shift Key Priorities and Combinations: If combinations of the
Alt, Ctrl, and Shift keys are pressed and only one is valid, the
priority is as follows: the Alt key is first, the Ctrl key is second,
and the Shift key is third. The only valid combination is Alt and
Ctrl, which is used in the system-reset function.
Special Handling
System Reset
The combination of the Alt, Ctrl, and Del keys results in the
keyboard routine that starts a system reset or restart. System
reset is handled by BIOS.
Break
The combination of the Ctrl and Break keys results in the
keyboard routine signaling interrupt hex tB. The extended
characters AL=hex 00, and AH=hex 00 are also returned.
System BIOS
5-21
Pause
The Pause key (Ctrl and Num Lock) causes the keyboard
interrupt routine to loop, waiting for any key except Num Lock to
be pressed. This provides a method of temporarily suspending an
operation, such as listing or printing, and then resuming the
operation. The method is not apparent to either the system or the
application program. The key stroke used to resume operation is
discarded. Pause is handled internal to the keyboard routine.
Print Screen
The PrtSc key results in an interrupt invoking the print-screen
routine. This routine works in the alphanumeric or graphics
mode, with unrecognizable characters printing as blanks.
System Request
When the System Request (Sys) key is pressed, a hex 8500 is
placed in AX, and an interrupt hex 15 is executed. When the Sys
key is released, a hex 8501 is placed in AX, and another interrupt
hex 15 is executed. If an application is to use System Request,
the following rules must be observed:
Save the previous address.
Overlay interrupt vector hex 15.
Check AH for a value of hex 85:
If yes, process may begin.
If no, go to previous address.
The application program must preserve the value in all registers,
except AX, upon return. System Request is handled internal to
the keyboard routine.
5-22
System BIOS
Other Characteristics
The keyboard routine does its own buffering, and the keyboard
buffer is large enough to support entries by a fast typist.
However, if a key is pressed when the buffer is full, the key will
be ignored and the "alarm" will sound.
The keyboard routine also suppresses the typematic action of the
following keys: Ctrl, Shift, Alt, Num Lock, Scroll Lock, Caps
Lock, and Ins.
During each interrupt 09H from the keyboard, an interrupt 1SH,
function (AH)=4FH is generated by the BIOS after the scan
code is read from the keyboard adapter. The scan code is passed
in the (AL) register with the carry flag set. This is to allow an
operating system to intercept each scan code prior to its being
handled by the interrupt 09H routine, and have a chance to
change or act on the scan code. If the carry flag is changed to 0
on return from interrupt 1SH, the scan code will be ignored by
the interrupt handler.
System BIOS
5-23
Quick Reference
Testl ..........................................
Data Area Description . . . . . . . . . . . . . . . . . . . . . . . . ..
Common POST and BIOS Equates ................
Test .01 Through Test .16 .......................
POST and Manufacturing Test Routines ............
5-28
5-30
5-32
5-36
5-57
Test2 .......................................... 5-58
Test .17 Through Test .23 ....................... 5-58
Test3. POST Exception Interrupt Tests ................ 5-75
Test4. POST and BIOS Utility Routines ...............
CMOS READ ..............................
CMOS--VVRITE .............................
E MSG P MSG...........................
ERR BEEP--................................
BEEP ......................................
VVAITF .....................................
CONFIG BAD..............................
PRT SEG ..................................
KBD- RESET ...............................
D11 - Dummy Interrupt Handler .................
Hardware Interrupt 9 Handler (Type 71) ...........
5-81
5-81
5-81
5-82
5-82
5-83
5-83
5-83
5-84
5-85
5-87
5-87
Test5. Exception Interrupt Tests .....................
SYSINIT1 - Build Protected Mode Descriptors .......
GDT BLD - Build the GDT for POST ............
SIDT--BLD - Build the IDT for POST ............
5-88
5-89
5-89
5-91
Test6 ..........................................
STGTST CNT ..............................
ROM ERR .................................
XMIT-- 8042 ................................
BOOT-- STRAP ..............................
5-93
5-93
5-95
5-95
5-95
Diskette BIOS
.................................. 5-97
Fixed Disk (Hard File) BIOS ....................... 5-116
5-24
System BIOS
Keyboard BIOS .................................. 5-129
Printer BIOS
5-138
RS232 BIOS
5-140
Video BIOS .................•.................. 5-143
BIOS .......................••...............
Memory Size Determine .......................
Equipment Determine .........................
NMI ......................................
5-161
5-161
5-161
5-162
BIOS1. . ..............................•.......
Event Wait .................................
Joystick Support .............................
Wait ......................................
Block Move ................................
Extended Memory Size Determine ...............
Processor to Virtual Mode .....................
5-163
5-164
5-165
5-166
5-167
5-172
5-174
BIOS2 ......................•................
Time of Day ................................
Alarm Interrupt Handler .......................
Print Screen .................................
Timer 1 Interrupt Handler ......................
5-176
5-176
5-179
5-180
5-181
ORGS - PC Compatibility and Tables ................ 5-182
POST Error Messages .. , ...................... 5-182
System BIOS
5-25
Address
FOOO:E129
FOOO:3A23
FOOO: 6000
FOOO:19FO
FOOO: IBIA
FOOO:2022
FOOO:OC96
FOO~ :0396
FOOO;4135
FOOO:1941
FOOO: 195B
FOOO: 1 A45
FOOO:E6F5
FOOO :FA6E
FOOO:E020
FOOO:IBCA
FOOO:E030
FOOO:E040
FOOO: 1915
FOOO:20E3
FOOO:EFC1
FOOO:2AI1
FOOO:2C2B
FOOO:2A82
FOOO:2A2E
FOOO:FF53
FOOO; ICI8
FOOO:E05E
FOOO:EOl1
FOOO:E090
FOOO IEOA9
FOOO :EOC2
FOOO :EODB
FOOO :EOF4
FOOO lEI 00
FOOO:EI26
FOOO:EI3F
FOOO:EI68
FOOO:EI91
FOOO:EIB1
FOOO:EIDB
FOOO:E1EE
FOOO:E209
FOOD ;E224
FOOO:E239
FOOO:E2C6
FOO~ :E2EA
FOOD ;E30E
FOOO:E31E
FOOD ;E32E
FOOD :E343
FOOD :40A8
FOOD: 19B2
FOOD: 1910
FOOD :E364
FOOD IE319
FOOD :E38E
FOOD :E3AC
FOOOIE3BF
FOOD IE302
FOOO:E25D
FOOD ;E3DF
FOOO:E401
FOO~ :4888
FOOO:FF5E
FOOO:4501
FOOO:314F
FOOD :FF5A
FOOO: IC22
FOOO:E8EI
FOOO:E9IB
FOOO :E955
FOOO:E95F
FOOO IE969
FOOO:E916
FOOO:3261
FOOO:E81E
FOOO: 0008
FOOO:E886
FOOO:E88E
FOOO;E8C8
FOOO: IAEF
FOOO:3IFE
FOOO: 3112
FOOO:OOIO
FOOO :FOE4
FOOO:FOEC
FOOO:FOF4
FOOO:409E
FOOO :E2C3
FOOO;40B2
FOOO I 03A2
FOOO: 0000
FOOO: OC96
FOOO; 1611
FOOOl1941
FOOD: I C38
FOOD: IEB5
5-26
Pub I i 05 by Name
Aba
Abs
Address
AI
ACT DISP PAGE
BASTc
BEEP
BLINK INT
BOOT STRAP 1
C21 C8042
CASSETTE 10 1
CMOS READ CMOS-WRITE
CQNFTG BAD
CONF TeL
CRT CHAR GEN
01 011
02
D2A
DDS
DISKETTE 10 I
DISK BASE 01 SK-'NT 1
DISK-IO DISK-SETUP
DSKETTE SETUP
DUMMY RETURN
DUMMY-RETURN ,
EIOI EI02
EI03
EI04
EI05
EI06
EIOl
EI08
EI09
EI61
EI62
EI63
EI64
E201
E202
E203
E30 I
E302
E303
E304
E401
E501
E601
E602
EQUIPMENT I
ERR BEEP E MSG
FT180
FI781
FI782
FI790
FI191
F3A
F3D
F3DI
FD TBL
FILL
FLOPPY
GATE A20
HD INT
HRo
INT 281
KIOKII
KI2
KI3
KI4
FOOD
FOOD
FOOD
FOOD
FOOD
FOOD
FOOD
FOOD
Kt5
FOOD
FOOD
FOOD
FOOD
FOOD
FOOO
K16
Kb
K6L
K'
K8
K9
KBO RESET
K8 TNT I
KEYBOARD 10
M4
.,
FOO~
FOOD
FOOO
FOOD
FOOD
FOOD
FOO~
FOOD
FOOD
FOOD
FOOD
FOOD
FOOD
FOOO
FOOD
FOO~
FOOD
FOOO
FOOO
FOO~
FOOD
FOOO
FOOD
FOO~
FOOD
FOOD
FOOD
FOOO
FOOD
FOO~
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOD
FOO~
FOOO
FOOD
FOOD
FOOO
FOOO
FOO~
FOOO
FOOO
FOOO
FOO~
FOOO
FOOO
FOO~
FOOD
FOOD
FOO~
FOO~
I
"5
M.
MEMORY SIZE DET I
NMI INT
NMI-INT I
OBF-42 POST 1
PDST2
POS13
POST4
POSTS
POST6
MAP
FOO~
FOOD
FOOO
FOOD
FOOD
FOOD
FOOD
FOOD
FOOO
FOOD
FOOO
FOOD
FOOO
FOOD
FOOD
FOOD
FOOD
FOOD
FOOD
FOOD
FOOD
FOOO
FOOO
FOOO
FOOD
FOOO
FOOD
FOOD
FOO~
0000
0008
0010
0050
0396
03A2
OC96
OC96
r 052
IOB6
IOB9
10DA
1613
1671
1941
1941
195B
1915
1970
19A4
19B2
19FO
I A36
IM5
1 A59
I A69
IA70
I A85
IABI
I ABO
I AEF
IBIA
1828
I BCA
ICI8
ICI9
I C22
IC31
I C38
ID2A
IEB5
I EB5
IFB5
IFEI
2022
20E3
28C I
2All
2A2E
2A82
2C2B
314F
3112
31FE
3261
366C
3116
31AO
38BO
38EF
39BF
39E4
3AOC
3A23
3A41
3A6D
3A90
3B2F
3B8 r
38DB
3COD
3CeO
3CCE
3F12
3FF9
409E
40A8
40B2
4135
43BF
450 I
45BO
413F
47A9
483F
4888
bOOO
E020
E030
E040
E05E
E071
E090
EOA9
EOC2
EOOS
EOF4
EIOD
Publios by Value
Aba
Abs
POSTI
KbL
"4
START
I
C8042OSF 42
1"051'2
C21
SHUT3
SHUT2
SHUn
SHUT6
SHUT4
POST3
CMOS READ
POST4
CMOS WR I TE
DOS E MSG
P-MSG
ERR SEEP
BEEP
WAITF
CONFIG BAD
XPC BYTE
PRT-HEX
PRT-SEG
PROT PRT HEX
ROM CHECKSUM
ROM-CHECK
KBD-RESET
BLINK INT
SET TOO
011DUMMY RETURN 1
RE DIRECT
INT 287
PROC SHUTDOWN
POST5
SYSINITI
POST6
STGTST CNT
ROM ERR
XMIT 8042
BOOT-STRAP 1
DISKETTE 10 I
SEEK
-DISK tNT I
DSKETTE SETUP
01 SK SETUP
DISK-IO
HD INT
KEYSOARD 10 1
KB INT 1- KI6
SND DATA
PRINTER 10 r
RS232 10 1VIDEO-IO-I
SET MODESET-CTYPE
SET-CPOS
READ CURSOR
ACT
sp PAGE
SET-COLOR
VIDEO STATE
SCROLL UP
SCROLL-DOWN
READ AC CURRENT
WR I TE AC CURRENT
WR I TE-C CURRENT
READ DOT
WRITE DOT
WR 1TE-TTY
READ LpEN
MEMORY SIZE oET I
EQUIPMENT 1NMI INT 1CASSETTE 10 I
SHUT9
-GATE A20
TIME-OF DAY I
RTC TmpR I NT SCREEN I
TIMER-'NT 1 FILL BASIC
01
02
D2A
EIOI
EI02
EI03
EI04
EI05
EI06
EI07
EI08
or
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOD
FOOO
FOOD
FOOO
FOOO
FOOD
FOOD
FOOD
FOOO
FOOD
FOOO
FOOD
FOOD
FOOD
FOOO
FOOD
FOOD
FOOO
FOOD
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOD
FOOO
FOOO
FOOO
FOOO
FOOO
FOOO
FOOD
FOOO
FOOD
FOOD
FOOO
FOOD
FOOO
3116
FF54
41A9
lC31
1 A85
1 A69
lA10
19A4
FFFO
3B81
3AOC
3CBD
3FF9
lC19
I ABO
1ABI
1FB5
31M
413F
382F
3A90
28Cl
FF62
3A41
39E4
39BF
38EF
1828
IOB6
1052
1613
100A
10B9
43BF
FF23
366C
0050
1E85
ID2A
483F
45BO
FF66
FEF3
38BO
FOA4
3A6D
I A36
3BDB
3COD
3CCE
3F12
lFE\
1 A59
PRINTER [0 1
PR 1NT SCREEN
PR [NT- SCREEN t
PROC SHUTDOWN
PROT-PRT HEX
PRT 'HEX PRT-SEG
P MSG
P-O R
READ AC CURRENT
READ-CURSOR
READ-DDT
READ-LPEN
RE OTRECT
ROM CHECK
ROM-CHECKSUM
ROM-ERR
RS232 [0 \
RTC INT SCROLL DOWN
SCROLL-UP
SEEK
SEEKS t
SET COLOR
SET-CPOS
SET-CTYPE
SET-MODE
SET-TOO
SHUT2
SHUT3
SHUT4
SHUT6
SHUn
SHUT9
SLAVE VECTOR TABLE
SND DATA
START I
STGTST CNT
SYSINITI
TIMER INT I
TIME OF DAY I
TUTOR VECTOR TABLE
VIDEO To 1
V IOEO-PARMS
V [OED-STATE
WA ITFWR I TE AC CURRENT
WR I TE-C CURRENT
WR I TE-DOT
WR 1TE-TTY
XMIT 8042
XPC_BYTE
FOOD
FOOO
FOOD
FOOD
FOOD
FOOO
FOOD
FOOD
FOOO
FOOD
FOOD
FOOO
FOOD
FOOD
FOOO
FOOD
FOOD
FOOD
FOOD
FOOO
FOOO
FOOO
FOOD
FOOD
FOOD
FOOD
FOOD
FOOO
FOOO
FOOD
FOOD
FOOO
FOOD
FOOO
FOOO
FOOD
FOOO
FOOD
FOOD
FOOD
FOOO
FOOO
FOOO
FOOO
FOOO
FOOD
FOOO
FOOD
FOOO
FOOO
FOOO
FOOO
FOOD
EI26
EI3F
EI68
E19\
EI81
EIOB
EIEE
E209
E224
E239
E250
E2C3
E2C6
E2EA
E30E
E3\E
E32E
E343
E364
E319
E38E
E3AC
E38F
E3D2
E3DF
E40 I
E6F5
E129
E81E
E886
E88E
E8C8
E8EI
E91B
E955
E95F
E969
E916
EFC1
FOM
FOE4
FOEC
FOF4
FA6E
FEF3
FF23
FF53
FF54
FF5A
FF5E
FF62
FF66
FFFO
El09
EI61
EI62
E163
EI64
E201
E202
E203
E301
E302
F3D
NMI INT
E303
E304
E401
E501
E601
E602
FI180
F1181
FI182
FI190
F119\
F3A
F30\
FO TBL
CONF TBL
AI
-
K.
K1
K8
K9
KIO
Kl1
K 12
K13
K 14
K 15
DISK BASE
V IDEO PARMS
.5
.,••
-
CRT CHAR GEN
VECTOR TABLE
SLAVE VECTOR TA8LE
OUMMY-RETURNPR [NT-SCREEN
HRO FLOPPY
SEEKS I
TUTORP _O_R
THE
8105
ROUTINES
ARE
MEANT
TO
BE
ACCESSED
THROUGH
SOFTWARE
INTERRUPTS
ONLY.
ANY
ADDRESSES
PRESENT
1N
THESE
LIST I NGS
ARE
INCLUDED
ONL Y
FOR
COMPLETENESS,
NOT
FOR
REFERENCE.
APPL I CAT [ONS
WH I CH
REFERENCE
ANY
ABSOLUTE
ADDRESSES
WITH I N
THE
CODE
SEGMENTS
OF
810S
VIOLATE
THE
STRUCTURE
AND
DESIGN
OF
8105.
ADDRESSES
WITH I N
THE
810S
CODE
SEGMENT
ARE
SUBJECT
TO
CHANGE
AND
ROUT I NES
SHOULD
BE
ACCESSED
THROUGH
PO I NTERS
IN
THE
I NTERRUPT
VECTORS
OR
WHEN
NECESSARY
THROUGH
THE
POINTERS
[N
THE
8105
~OATA"
SEGMENT.
MAP
5-27
IBM Personal Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
1
2
3
Version 2.00
(POST)
PAGE 118,121
TITLE TESTI ---- 06/I0/8S
.286C
•
1-1
06-10-8S
POWER ON SELF TEST
(POST)
5
6
1
8105
•
9
10
I/O INTERFACE
THESE LISTINGS PROVIDE INTERFACE INFORMATION FOR ACCESSING
THE BIOS ROUTINES.
THE POWER ON SELF TEST rs INCLUDED.
11
12
13
THE
BIOS
ROUTINES
ARE
MEANT
TO
BE
ACCESSED
THROUGH
INTERRUPTS
ONLY.
ANY
ADDRESSES
PRESENT
IN
SOFTWARE
THESE
LISTINGS
ARE
INCLUDED
ONLY
FOR
COMPLETENESS,
NOT FOR
REFERENCE.
APPL I CAT IONS
WH I CH
REF~RENCE
ANY
ABSOLUTE
ADDRESSES
WITH I N THE
CODE
SEGMENTS
OF
B I OS
VIOLATE
THE
STRUCTURE
AND
DESIGN
OF
BIOS.
I.
15
"
16
11
19
20
21
22
23
2.
MODULE REFERENCE
25
26
TEST! .ASM
DSEG.INC
POS TEQU. INC
SYSDATA. INC
21
2.
29
30
31
-->
-->
TEST2.ASM
32
33
lEST3. ASM
TEST4.ASM
3.
-->
-->
35
36
31
3B
39
.0
"'2
43
4.
'5
'6
".B
49
50
51
52
53
5.
55
56
51
5B
TESTS.ASM
59
60
61
62
TEST6.ASM
63
6.
65
66
61
6B
69
10
DSKETTE. ASM
11
12
,.
DISK.ASM
16
11
KYBD.ASM
-->
13
18
PRT .ASM
RS232.ASM
VIDEOI.ASM
BIOS.ASM
B.
B5
B6
B1
810S1.ASM
BB
B9
90
91
92
93
9.
95
96
91
9B
99
100
101
102
103
10.
105
106
101
lOB
109
110
BIOS2.ASM
ORGS.ASM
LIST
TESTl
OISKETTE 8105
DISKETTE 10 I
DISK INT-l OSKETTE SETUP
FIXED DISK BIOS
DISK SETUP
DISK-IO
KE~~0!~6 8105
15
19
BO
B1
B2
B3
POST AND MANUFACTURING TEST ROUTINES
DATA SEGMENTS LOCATIONS
COMMON EQUATES FOR POST AND 8105
POWER ON SELF TEST EQUATES FOR PROTECTED MODE
POST TEST. 0 1 THROUGH TEST. 16
POST TEST AND INITIALIZATION ROUTINES
POST TEST. 1 7 THROUGH TEST. 22
POST EXCEPT I ON I NTERRUPT TESTS
POST AND BIOS UTILITY ROUTINES
CMOS READ
- READ CMOS LOCATI ON ROUT INE
CMOS-WRITE
- WRITE CMOS LOCATION ROUTiNE
DDS - LOAD (OS:) WITH DATA SEGMENT
E MSG
- POST ERROR MESSAGE HANDLER
MFG HAL T
- MANUF ACTUR I NG ERROR TRAP
- POST STRING DISPLAY ROUTiNE
P MSG
ERR 8EEP
- POST ERROR BEEP PROCEDURE
BEEP
- SPEAKER BEEP CONTROL ROUT I NE
WAITF
- FIXED TIME WAIT ROUTINE
CONFIG BAD
- SET BAD CONFIG IN CMOS DIAG
XPC BYTE
- D I SPLA Y-HEX BYTE AS 00-- FF
PRT-HEX
- DISPLAY CHARACTER
PRT-SEG
- 01 SPLAY SEGMENT FORMAT ADDRESS
PROT PRT HEX
- POST PROTECTED MODE DISPLAY
ROM CHECKSUM
- CHECK ROM MODULES FOR CHECKSUM
RON-CHECK
- ROM SCAN AND I NIT I AL f ZE
KBD-RESET
- POST KEYBOARD RESET ROUT I NE
BLINK INT
- MANUFACTURING TOGGLE BIT ROUTINE
SET TOO
- SET TI MER FROM CMOS RTC
- DUMMY I NTERRUPT HANDLER
-> I NT 7?H
D 1 1RE 0 I RECT
- HARDWARE I NT
9 RED I RECl (L 2)
INT 287
- HARDWARE INT 13 REDIRECT (281)
PROC SHUTDOWN - 80286 RESET ROUT I NE
EXCEPTToN I NTERRUPT TEST HANDLERS FOR POST TESTS
SYSINITI
- BUILD PROTECTED MODE POINTERS
GOT BlD
- BUILD THE GOT FOR POST
SlOT BLO
- BUILD THE lOT FOR POST
POST TESTS AND SYSTEM BOOT STRAP
STGTST CNT
- SEGMENT STORAGE TEST
ROM ERR
- ROM ERROR 0 I SPlA Y ROUT I NE
XMIT 8042
- KEYBOARD DIAGNOSTiC OUTPUT
BOOT:::STRAP
- BOOT STRAP LOADER
-INT 19H
-->
-->
-
INT 13H BIOS ENTRY (40H)
-INT 13H
HAROWARE INTERRUPT HANDLER -INT OEH
POST SETUP DR I VE TYPES
-
SETUP 0 I SK VECTORS AND TEST
INT 13H BIOS ENTRY
-INT 13H
- HARDWARE INTERRUPT HANDLER -INT 16H
KEYBOARD 10 I - INT 16H BIOS ENTRY
-INT 16H
KB I NT 1- - HARDWARE I NTERRUPT
-I NT 09H
SNO DATA
- KEYBOARD TRANSMISSION
PRINTER 'ADAPTER BIOS
-INT l1H
COMMUNICATIONS BIOS FOR RS232
-INT 14H
VIDEO BIOS
-INT IOH
BIOS ROUTINES
MEMORY 5 I ZE DET 1 - REAL MODE SIZE
12H
EQU I PM~NT 1- -EQU I PMENT DETERM I NAT I ON
-INT llH
NMI INT ,- NMI HANDLER
-INT 02H
I NTERRUPT- j 5H B I OS ROUT I NES
-INT 15H
DEV OPEN
- NULL DEV I CE OPEN HANDLER
DEV-CLOSE
- NULL DEV I CE CLOSE HANDLER
PROG TERM
- NULL PROGRAM TERM I NAT I ON
EVENT WA I T
- RTC EVENT WA I T IT I MEOUT ROUTI NE
JOY STICK
- -JOYSTICK PORT HANDLER
SYS-REQ
- NULL SYSTEM REQUEST KEY
WAIT
- RTC TIMED WAIT ROUTiNE
BLOCKMOVE
- EXTENDED MEMORY MOVE INTERFACE
GATE A20
- ADDRESS 81T 20 CONTROL
EXT MEMORY
- EXTENDED MEMORY SIZE DETERM I NE
SET-VMODE
- SW I TCH PROCESSOR TO V I RTUAL MODE
DEVTcE BUSY
- NULL DEVICE 8USY HANDLER
I NT COMPLETE
- NULL I NTERRUPT COMPLETE HANDLER
B I OS TNTERRUPT ROUT I NES
TIME OF DAY' - TIME OF DAY ROUTINES
-INT IAH
RTC TNT- I RQ LEVEL 8 ALARM HANDLER
- I NT 10H
PR I NT SCREEN' - PR I NT SCREEN ROUT I NE
-I NT OSH
TlMER-'NT 1
- TIMERI INTERRUPT HANDLER
->INT lCH
COMPATIBILITY MODULE
POST ERROR MESSAGES
DISKETTE - DISK - ,VIDEO DATA TABLES
IBM
TESTI
Computer MACRO A55embler
Ver5ion 2.00
---- Ob/l0/65
POWER ON SELF TEST (POST)
DSEG.INC - DATA SEGMENTS
Per~onal
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
12b
127
128
129
C
e
0006
0008
????????
0014
0014 ???777??
0020
0020
????????
0040
0040
?????7??
004C
004C ????7???
0060
0060
?????7??
139
140
141
142
143
144
0014
0014 ???"?"
0018
0018
154
155
156
163
I b4
1 b5
166
161
168
169
170
111
112
173
114
NON-MASK ABLE
INTERRUPT VECTOR
IPINT5_PTR
ORG
4·005H
DO?
PRINT SCREEN
INTERRUPT VECTOR
III I NT_PTR
ORG
4·008H
DO?
HARDWARE
IIIVIDEO_INT
ORG
4·010H
DO?
VIDEO
1II0RG_VECTOR
ORG
4·013H
DO?
DISKETTE/DI SK
IIIBASIC_PTR
ORG
DD
POINTER TO CASSETTE BASIC
IIIPARM_PTR
ORG
4·01DH
DO?
POINTER TO VIDEO PARAMETERS
IPDISK_POINTER
ORG
4·01EH
DO?
POINTER TO DISKETTE PARAMETER TABLE
IlIEXT _PTR
ORG
4·01FH
DO?
PO I NTER TO GRAPH I C CHARACTERS
IIIDISK_VECTOR
ORG
4·040H
DO?
POINTER TO DISKETTE
IlIHF_TBL_VEC
ORG
4·041H
DO?
POINTER TO FIRST DISK PARAMETER TABLE
IIIHF1_TBL_VEC
ORG
4·046H
DO?
POINTER TO SECOND DISK PARAMETER TABLE
iIISLAVE_INT_PTR
DRG
4·070H
DO?
POINTER TO SLAVE
@HDISK_INT
ORG
DO
POINTER TO FIXED DISK
IPTOS
ORG
0400H
OW?
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
c
????????
C
C
INTERRUPT VECTOR TABLE
INTERRUPT POINTER
0104
0104 ????????
e
e
aI
e
4·018H
")
I/O
(8-F)
INTERRUPT VECTOR
INTERRUPT VECTOR
128-255
C
INTERRUPT CODE
C
C
18
011817117???
C
01CO
OICO
????????
C
C
0108
0108
????????
C
C
C
160
161
162
START OF
ORG
4·002H
DO?
001C
001C ????17??
157
158
159
DB
PNMI_PTR
0100
0100
????1717
151
152
153
IPSTG_LOCO
C
C
C
C
C
C
145
146
141
148
149
150
C
C
C
C
136
131
138
; ------------ ----------------------------
C
0000
133
134
135
PAGE
INCLUDE DSEG. INC
C;
80286 INTERRUPT LOCAT IONS
C;
REFERENCED BY POST & B I OS
; -- ---------- ---------------------------C
C
C
SEGMENT AT 0
ADDRESS= 0000;0000
130
131
132
1-2
06-10-65
INTERRUPT HANDLER
C
4·016H
")
INTERRUPT CODE
C
0400
0400 ????
C
C
0500
0500
C
C
C
C
1COO
1COO
7eOO
(ioMFG_TEST_RTN
C
C
C
IlIBOOT_LOCN
C
CASSO
~G
STACK -- USED DURING POST ONLY
USE WILL OVERLAY INTERRUPTS VECTORS
LABEL
0500H
FAR
LOAD LOCATION FOR MANUFACTURING TESTS
ORG
LABEL
1COOH
FAR
BOOT STRAP CODE LOAD LOCATION
ENDS
TESTl
5-29
1-3
IBM Pereonal Computer MACRO Aseembler
Version 2.00
TESTI ---- Ob/10/85
POWER ON SELF TEST (POST)
OSEG.INC - DATA SEGMENTS
"5
".
C
C
117
"B
"9
IBO
IBI
IB2
IB3
lB.
IB5
lB.
IB7
IBB
IB9
190
191
192
193
19'
195
19.
197
19B
199
200
201
202
203
20.
205
20.
207
20B
209
210
211
212
213
21'
215
21.
2.7
2'B
2'9
250
251
252
253
25.
255
25.
257
25B
2.9
2.0
2.,
2.2
2.3
2 ••
2 ••
2 ••
2.7
2.B
2.9
270
DATA
C
C
C
C
C
C
ttEQUIP FLAG
ttMFG TST
PMEMORY SIZE
PMFG_ERR_FLAG
C
;
C
C
;--
;
C
C
C
C
C
C
C
SEGMENT AT 40H
ADDRESS= 0040: 0000
DW
DW
DW
DW
DW
DW
DW
DW
DW
DB
DW
DB
DB
BASE ADDRESSES OF RS232 ADAPTERS
SECOND LOGICAL RS232 ADAPTER
RESERVED
RESERVED
BASE ADDRESSES OF PRINTER ADAPTERS
SECOND LOGICAL PRINTER ADAPTER
THIRD LOGICAL PRINTER ADAPTER
RESERVED
INSTALLED HARDWARE FLAGS
INITIALIZATION FLAGS
BASE MEMORY SIZE IN K BYTES
(X 1024)
SCRATCHPAD FOR MANUFACTUR I NG
ERROR CODES
- -- - - -- -- - - - - -- - - - - ---- - - - ---- -- - --- - - -DATA AREAS
1
-----KEY80ARD
- ----- - - ----- - - ---- - -- --- - - - - - - --
C
C
DB
DB
DB
ttKB FLAG
ttKB-FLAG 1
PAL"f INPUT
tt8UFFER HEAD
PBUFFER:TAIL
; ------
KEYBOARD SHIFT STATE AND STATUS FLAGS
• SECOND 8YTE OF KEYBOARD STATUS
; STORAGE FOR ALTERNATE KEY PAD ENTRY
I PO [NTER TO HEAD OF KEYBOARD 8UFFER
; PO I NTER TO TAl L OF KEY80ARD 8UFFER
DW
DW
HEAD
C
C
= TAIL
DW
INDICATES THAT THE BUFFER IS EMPTY
16 DUP!?}
ROOM FOR 15 SCAN CODE ENTR I ES
C
C
C
C
C
C
;I
----- - DISKETTE
----- -- - --- - -- --- -- - - ---- - - - ---DATA AREAS
:
C
C
DB
DRIVE RECALI8RATION STATUS
BIT 3-0 = DRIVE 3-0 RECALIBRATION
BEFORE NEXT SEEK IF BIT IS =
MOTOR STATUS
BIT 3-0 '" DRIvE 3-0 CURRENTLY RUNNING
BIT 1 = CURRENT OPERATION IS A WRITE
T I ME OUT COUNTER FOR MOTOR ( S) TURN OFF
RETURN CODE STATUS 8YTE
C
C
C
C
C
C
C
C
a
DB
IPMOTOR COUNT
DB
IPDSKETTE_STATUS DB
DB
C
C
1 DUP(?)
II
~~~T~~O~~TE~ N F~6~C~ I ~~~T~~ S~p~~~~~6~ON
C
C
C
0049
004A
004C
004E
0050
??
1111
111?
1111
OB
???1
OObO
0062
0063
0065
0066
11??
1?
1?1?
11
1?
;--
C
C
I
C
C
C
C
C
C
OCRT MODE
II'ICRT-COLS
IPCRT-LEN
PCRT-START
ttCURSOR_POSN
DB
OW
OW
OW
C
C
C
C
II.'ICURSOR MODE
II'IACT I VE-PAGE
OADDR 6845
II'ICRT MODE SET
OCRT:PALETTE
OW
DB
OW
DB
DB
;
ow
CURRENT 01 SPLAY MODE I TYPE)
NUMBER OF COLUMNS ON SCREEN
LENGTH OF REGEN BUFFER I N BYTES
STARTING ADDRESS IN REGEN BUFFER
CURSOR FOR EACH OF UP TO 8 PAGES
?
?
8 DUPIn
c
c
I
;
0061
0069
006B
------------ --- --- ----- - - - ----- -----VIDEO DISPLAY DATA AREA
:
-- -- ------ ------ -- --------- --- ----- ----
C
c
2.,
2 ••
--- ------------------------ - ---- - -- ---ROM 8105 DATA AREAS
:
-- --- ----- ----- - - ----- -- ---- - -- ----- - --
C
C
22'
225
2.3
2 ••
2.5
;
;
C
C
219
220
221
222
223
2.2
;
C
C
C
C
C
2"
21B
22.
227
22B
229
230
231
232
233
23.
235
23.
237
23B
239
2.0
PAGE
C
C
C
06-10-85
11?1
11?1
11
POST AND BIOS WORK DATA AREA
- --- - -- - -- -- - - ---- - ---- - - - - - -- - - - ---- ---
010 ROM INIT
OIO-ROM-SEG
11'1 I NTR_FLAG
;
;
C
CURRENT CURSOR MODE SETT I NG
CURRENT PAGE BEING DISPLAYED
BASE ADDRESS FOR ACTIVE DISPLAY CARD
CURRENT SETT I NG OF THE 3X8 REG I STER
CURRENT PALETTE SETTI NG - COLOR CARO
STACK SAVE, etc.
POINTER TO ROM INITIALIZATION ROUTINE
PO I NTER TO I / a ROM SEGMENT
FLAG INDICATING AN INTERRUPT HAPPENED
DW
DW
DB
- ---- -- - - - --- - --- - - - - -- - - - - --- - - - - - -- --TIMER DATA AREA
; ----------------------------------------
C
006C
006E
0010
0011
0012
1111
1??1
"
C
C
C
C
C
C
11
1???
IPBIOS BREAK
ttRESET]LAG
C
C
C
C
C
C
C
C
DW
DW
DB
;
;
;
LOW WORD OF T I MER COUNT
HIGH WORD OF T I MER COUNT
TIMER HAS ROLLED OVER SINCE LAST READ
-- -- ------ -----DATA
- - ------------- -------------- -- -SYSTEM
---- ------- AREA
- - - - - - - - - - - - - - - - -- - --
C
C
C
TESTl
;
;
272
273
27.
275
27.
217
27B
279
5-30
;
C
C
271
0014
0015
0016
0011
OTIMER LOW
ttT I MER-H I GH
IPTI MER:OFL
DB
DW
I
;
BIT 7=1 IF BREAK KEY HAS BEEN PRESSED
WORD= 1 234H I F KEYBOARD RESET UNDERWAY
I - - - - - --- - - -- ---- - - - - - - - - - - - - - -- - - -- - ---;
FIXED DISK DATA AREAS
~
ODISK STATUS!
ttHF NUM
OCONTROL BYTE
OPORT_OFF
DB
DB
DB
DB
FIXED DISK STATUS
COUNT OF FIXED DISK DRIVES
HEAD CONTROL 8YTE
RESERVED ~ PORT OFFSET)
IBM Personal Computer MACRO Assembler
Version 2.00
TESTI ---- 06/10/65
POWER ON SELF TEST (POST)
OSEG.INC - DATA SEGMENTS
280
281
282
283
28.
285
0076 11
286
0079 ??
281
001A 11
288
001B ??
289
007C
290
0010
291
001E ??
292
007F 11
293
29.
295
296
291
298
299
0080 11??
300
0082 ????
301
302
303
3D.
305
306
0084 11
301
0065 ????
308
0067 ??
309
0088 11
310
0089 11
311
008A ??
312
313
31'
315
316
311
008B 11
318
OGBC ??
319
0080 ??
320
008E 11
321
OOBF 11
0090 11
322
323
0091 ??
32.
0092 11
325
0093 ??
326
0094 ??
321 • 0095 11
328
329
330
331
332
0096 ??
333
33.
0097 11
335
336
331
338
339
3.0
0098 ??
3.,
009A 11
009C ??
3'2
343
009E ??
3 ••
OOAO ??
3.5
3'6
3"
3.8
3.9
350
OOAI
01 [
351
11
352
353
35.
355
356
351
358
00A8 1111??1?
359
360
361
362
363
36.
365
0100
366
361
0100 ??
368
369
310
0101
311
312
1-'
06-10-85
PAGE
;- - -------------------------------------;
TIME-OUT VARIABLES
:
;
------ --
---- ----
--- --- --- ----- --- --
G!lPRINT_TIM_OUT
n
ORS232_ TIM_OUT
;
;
;
- -- -- - - - - -- - - - - - - - - - -- - - - - -- - - - -- -- - ---KEYBOARD DATA AREA
----- - - ADDITIONAL
---- - ---- - -------- - - ---- - - - -- - --
G!lBUFFER START
G!lBUFFER:END
;
T I ME OUT COUNTERS FOR PR [NTER RESPONSE
SECOND LOG I CAL PR [NTER ADAPTER
TH I RD LOG I CAL PR I NTER ADAPTER
RESERVED
T I ME OUT COUNTERS FOR RS232 RESPONSE
SECOND LOG I CAL RS232 ADAPTER
RESERVED
RESERVED
DB
DB
DB
DB
DB
DB
DB
DB
; BUFFER LOCATION WITHIN SEGMENT 40H
; OFFSET OF KEYBOARD BUFFER START
; OFFSET OF END OF BUFFER
ow
ow
- - --- - - - - - - - - - -- - - - ---- - - -- - - - - - - - - - - - --
;
EGA/PGA DISPLAY WORK AREA
1--- ---- - - - - - - - - - - - - - - - - - - - - - - - - - - --- - --OROWS
OPOINTS
OINFO
OINFO_3
;
;
;
OW
DB
DB
DB
DB
I)
- - - - -- - - - -- - - - - -- - -- ---- - --- -- - --- - - ---ADDITIONAL MEDIA DATA
----- - --- - - ---- - - - -- - - --- - - - --- - - - -- - --
G!lLASTRATE
IPHF STATUS
IPHF-ERROR
OHF-I NT FLAG
IlIHF-CNTRL
IPOSK_STATE
C
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
C
e
e
e
e
e
e
e
e
e
e
e
e
ROWS ON THE ACT I VE SCREEN (LESS
BYTES PER CHARACTER
MODE OPT IONS
FEATURE BIT SWITCHES
RESERVED FOR 0 I SPLAY ADAPTERS
RESERVED FOR 0 I SPLA Y ADAPTERS
DB
OOSK_TRK
; --;
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
LAST DISKETTE DATA RATE SELECTED
STATUS REGI STER
ERROR REG I STER
F I XED 0 I SK I NTERRUPT FLAG
COMBO FIXED DISK/DISKETTE CARD BIT 0=1
DRIVE
MEDIA STATE
DRIVE 1 MEDIA STATE
DRIVE 0 OPERATION START STATE
DRIVE 1 OPERATION START STATE
DRIVE 0 FRESENT CYLINDER
DR I VE 1 PRESENT CYL I NDER
a
-----ADDITIONAL
- ----- - --------------- ------ ---KEYBOARD FLAGS
; ---------------------------- -----------OKB FLAG 3
OKB:FLAG:2
;
I
DB
DB
KEYBOARD MODE STATE AND TYPE FLAGS
KEYBOARD LED FLAGS
--- - - - -- - - ---- - - --- -- - - -- - - ---REAL T I ME CLOCK DATA AREA
; ------ - - ;
OUSER FLAG
OUSER-FLAG SEG
OoRTC COW G!lRTC-H I GH
OoRTC:WA IT_FLAG
ow
OW
DW
ow
DB
- - -- ---- - ---- - - -- -- ----- - ---- - ------ ---;
AREA FOR NETWORK ADAPTER
,--------- - ------ ---- -- ----------- - - - ---
OFFSET ADDRESS OF USERS WA I T FLAG
SEGMENT ADDRESS OF USER WA I T FLAG
LOW WORD OF USER WA I T FLAG
HIGH WORD OF USER WAIT FLAG
WAIT ACTIVE FLAG {OI=BUSY. 60=POSTED}
(OO=POST ACKNOWLEDGED}
;
ONET
;
;
;
DB
RESERVED FOR NETWORK ADAPTERS
1 OUP!?)
- - -- - --- - --- - - - -- - - -- - - - - -- -- - --- - - - ---EGA/PGA PALETTE POINTER
--------- ---------- - ---------- - -------DO
;
PO I NTER TO EGA PARAMETER CONTROL BLOCK
,
RESERVED
;
ADORESS= 0040:
- - - - - - --- - - - - - - - - - - - --- - - ---- - ----- - ---OATA AREA - PRINT SCREEN
I
; ---------- - ------ --- - -- ---------- ---- --;
;
DRG
DATA
100H
a 100
(REF 0050: 0000)
DB
; PRINT SCREEN STATUS BYTE
OO=READY 10K,
01 =BUSY,
FF=ERROR
ENOS
I
END OF BIOS DATA SEGMENT
.LlST
TEST1
5-31
IBM Personal Computer MACRO Assembler
Version 2.00
TESTI ---- 06/10/65
POWER ON SELF TEST (POST)
POSTEQU.INC - COMMON EQUATES
373
374
375
376
377
378
37.
380
381
382
383
384
385
386
387
388
38.
3'0
3.,
3'2
3.3
3.4
3'5
396
3.7
3'8
3"
400
401
402
403
404
405
406
407
408
40.
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
42.
430
431
432
433
434
435
436
437
438
43.
440
441
442
443
444
445
446
447
448
44.
450
451
452
453
454
455
456
457
458
45.
460
461
462
463
464
465
466
467
468
46.
470
471
472
473
474
475
476
477
478
47.
480
481
482
483
484
485
C
PAGE
INCLUDE POSTEQU. INC
C
;
C
C
•
C
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
OOFC
0000
000 I
F6A7
F9FD
C
C
C
C
C
C
C
C
C
C
C
C
0060
0061
00F3
OOOC
OOCO
000 I
0002
00 I 0
0020
0040
0060
0064
0001
0002
0004
0008
0010
0020
0040
0080
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
0008
0010
0020
0040
0080
C
C
C
C
C
C
C
C
C
C
0060
OOAA
00A8
00.1.0
OOAE
OOCO
0000
DOoF
OOEO
OOFE
0001
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
ODED
00F2
00F4
OOAA
OOFA
OOFE
DOFF
0001
0002
0004
0008
00 I 0
0020
0040
0080
C
C
C
C
C
C
;
1-5
06-10-85
- - - ---- - - - - - --- - --- --- - --- - - ------ - - -- -EQUATES USED BY POST AND B I OS
- ---- - - ---- - - - - - - - - - - - - - - - - - - - - - ---- - ---
MODEL BYTE
SUB MODEL BYTE
BIOS LEVEL
RATE-UPPER
RATE::::LOWER
EOU
EOU
EOU
EOU
EOU
1--------- 8042
PORT A
PORT-B
RAM PAR ON
RAM-PAR-OFF
PARTTY ERR
GATE2 SPK2
REFRESH BIT
OUT2
10 CHECK
PARITY CHECK
STATUS-PORT
OUT 8UF FULL
I NPT BUF FULL
SYS FLAGCMD-DATA
KYBD INH
TRANS TMOUT
RCV TM"OUT
PARTTY_EVEN
KEYBOARD INTERFACE AND DIAGNOSTIC CONTROL REGISTERS -----------EQU
060H
8042 KEYBOARD SCAN CODE/CONTROL PORT
EQU
061H
PORT B READ/WRITE DIAGNOSTIC REGISTER
EQU
111100/18
AND MASK FOR PARITY CHECKING ENABLE ON
EQU
OOOOIIOOB
OR MASK FOR PARITY CHECKING ENABLE OFF
EQU
I 1000000B
R/W MEMORY - I/O CHANNEL PAR I TY ERROR
EQU
0000000IB
TIMER 2 INPUT GATE CLOCK BIT
EQU
00000010B
SPEAKER OUTPUT DATA ENA8LE BIT
EQU
000100008
REFRESH TEST BIT
EQU
00100000B
SPEAKER TIMER OUT2 INPUT BIT
EQU
01000000B
I/O (MEMORY) CHECK OCCURRED BIT MASK
EQU
100000008
MEMORY PARITY CHECK OCCURRED BIT MASK
EQU
064H
8042 STATUS PORT
EQU
000000018
0 = +OUTPUT BUFFER FULL
EQU
000000 108
I
+ I NPUT BUFFER FULL
EQU
000001008
2 = -SYSTEM FLAG -POST/-SELF TEST
EQU
0000 I 0008
3 = -COMMAND/ +DATA
EQU
000100008
4
+KEYBOARD INHIBITED
EQU
001000008
5
+TRANSMIT TIMEOUT
EQU
010000008
6 = +RECEIVE TIME OUT
EQU
100000008
7
+PARITY IS EVEN
8042
BASE MEM8
BASE-MEM
MFG LOOP
DSP-..JMP
KEY::::BD_INHI8
INPUT PORT BIT DEFINITION
EQU
000010008
EQU
OOOIOOOOB
•
EQU
00100000B
;
EQU
OIOOOOOOB
;
EQU
10000000B
;
; --------- 8042
WRITE 8042 LOC
SELF TEST INTR-FACE CK
DIS 'K8D
ENA-K80
READ 8042 INPUT
DISABLE BTT20
ENABLE BIT20
KYBD CLK DATA
SHUT-CMDKYBD::::CLK
COMMANDS ------------------------------------------------------EQU
060H
WRITE 8042 COMMAND 8YTE
EQU
OAAH
8042 SELF TEST
EQU
OABH
CHECK 8042 INTERFACE COMMAND
EQU
OADH
DISABLE KEYBOARD COMMAND
EQU
OAEH
ENABLE KEYBOARD COMMAND
EQU
OCOH
READ 8042 I NPUT PORT
EQU
ODDH
DISABLE ADDRESS LINE BIT 20
EQU
ODFH
ENABLE ADDRESS LINE BIT 20
EQU
OEOH
GET KEYBOARD CLOCK AND DATA COMMAND
EQU
OFEH
CAUSE A SHUTDOWN COMMAND
OOIH
KEYBOARD CLOCK BIT 0
EQU
OFCH
OOOH
OOIH
OF8A7H
OF9FoH
SYSTEM MODEL BYTE
• SYSTEM SUB-MODEL TYPE
; BIOS REVISION LEVEL
OF952H + 1 OX
; OF952H -lOX
I
=
=
=
=
;---------- KEYBOARD/LED COMMANDS
LED CMD
EQU
OEDH
KB READ 10
EQU
OF2H
K8:ENABLE
EQU
OF4H
;
;
;
SAVED IN !lIMFG TST -------------------BASE PLANAR R/W MEMORY EXTENSION 640/X
BASE PLANAR R/W MEMORY SIZE 256/512
LOOP POST ..JUMPER BtT FOR MANUFACTURING
DISPLAY TYPE SWITCH ..JUMPER BIT
KEY80ARD INHIBIT SWITCH BIT
LED WR I TE COMMAND
READ KEY80ARD 10 COMMAND
KEY80ARD ENABLE
; -- -------- 8042 KEYBOARD RESPONSE ------------ ----- ---------------------------KB OK
EQU
OAAH
; RESPONSE FROM SELF 0 I AGNOST I C
K8-ACK
EQU
OFAH
; ACKNOWLEDGE FROM TRANSMISSION
KB-RESENo
EQU
OFEH
; RESEND REQUEST
K8:0VER_RUN
EQU
OFFH
; OVER RUN SCAN CODE
;---------- FLAG EQUATES WITHIN
OKB FLAG -------------------------------------RIGHT SHIFT
EQU
OOOOOOOIB
RIGHT SHIFT KEY DEPRESSED
LEFT SHIFT
EQU
000000108
LEFT SHIFT KEY DEPRESSED
CTL SHIFT
EQU
000001008
CONTROL SHIFT KEY DEPRESSED
ALT-SHIFT
EQU
000010008
ALTERNATE SHIFT KEY DEPRESSED
SCROLL STATE
EQU
0001 OOOOB
SCROLL LOCK STATE HAS BEEN TOGGLED
NUt.! STATE
EQU
001000008
NUM LOCK STATE HAS BEEN TOGGLED
CAPS STATE
EQU
OIOOOOOOB
CAPS LOCK STATE HAS BEEN TOGGLED
INS_STATE
EQU
100000008
INSERT STATE IS ACTIVE
C
C
C
C
C
0004
0008
0010
0020
0040
0080
C
C
C
C
C
C
0007
C
0010
0020
0040
0080
C
C
C
C
C
C
C
C
C
C
C
0001
0002
0004
0020
0040
0080
C
C
;---------- FLAG EQUATES WITHIN
!lIKB FLAG 1 -----------------------------------SYS SHIFT
EQU
000001008
-SYSTEM KEY DEPRESSED AND HELD
HOLD STATE
EQU
00001000B
SUSPEND KEY HAS BEEN TOGGLED
~B~O~~T~~IFT
~~~
~~~ 6~~~~~
; ~~:O~~C~O~~Y K~~
CAPS SH I FT
INS_SHIFT
EQU
EQU
01 OOOOOOB
10000000B
;
;
b~p~~~~~6SED
CAPS LOCK KEY I S DEPRESSED
INSERT KEY IS DEPRESSED
;---------- FLAGS EQUATES WITHIN
!lIKB FLAG 2 ----------------------------------K8 LEOS
EQU
00000111B
'KEYBOARD LEO STATE 81TS
~B
-FA
K8-FE
KB-PR LED
KS:ERR
~~~
EQU
EQU
EQU
~~~~ 6~~~~
001 OOOOOB
010000008
100000008
; ~~~~~~~~o~~~~i ~~c~~~~b
;
;
;
RESEND RECE I VED FLAG
MODE INDICATOR UPDATE
KEYBOARD TRANSMIT ERROR FLAG
;---------- FLAGS EQUATES WITHIN
!lIK8 FLAG 3 ----------------------------------K8X
EQU
OOOOOOOIB
- ; RBX INSTALLED
LC HC
EQU
000000108
LAST SCAN CODED WAS A HIDDEN CODE
GRAPH ON
EQU
00000100B
ALL GRAPHICS KEY DOWN (W.T. ONLY)
N~M
;ET
LC A8
RO:ID
LK
-
~~~
~~~6~~~g~
EQU
EQU
010000008
10000000B
~~~~~V~BM (~g~~ ~~ ~~~g) 10
AND K8X
LAST CHARACTER WAS FIRST ID CHARACTER
DOING A READ 10 IMUST BE BITO)
C
0
0
0
0
0
0
0
0
0
0
0
C
C
C
C
C
C
00A8
0041
0038
0010
003A
0053
0052
002A
0045
0036
0046
0054
5-32
C
C
C
C
TESTl
; ---------- KEYBOARD SCAN CODES
10 I
EQU
OABH
10-2
EQU
041H
AL T KEY
EQU
56
CTL -KEY
EQU
29
CAPS KEY
EQU
58
DEL 'KEY
EQU
83
INS-KEY
EQU
82
LEFT KEY
EQU
42
NUM 'KEY
EQU
69
RIGHT KEY
EQU
54
SCROLL KEY
EQU
70
SYS_KEY
EQU
84
I ST 10 CHARACTER FOR KBX
2ND 10 CHARACTER FOR K8X
SCAN CODE FOR
ALTERNATE SHIFT KEY
SCAN CODE FOR
CONTROL KEY
SCAN CODE FOR
SH I FT LOCK KEY
SCAN CODE FOR
DELETE KEY
SCAN CODE FOR
I NSERT KEY
SCAN CODE FOR
LEFT SH I FT
SCAN CODE FOR
NUMBER LOCK KEY
SCAN CODE FOR
RIGHT SH I FT
SCAN CODE FOR
SCROLL LOCK KEY
SCAN CODE FOR
SYSTEM KEY
IBM Peri50nal Computer MACRO Assembler
Version 2.00
TESTI ---- 06/10/85
POWER ON SELF TEST (POST}
POSTEQU.INC - COMMON EQUATES
46.
461
466
469
490
491
492
493
494
495
49.
491
496
499
500
501
502
503
504
505
50.
501
506
509
510
511
512
513
514
515
516
511
516
519
520
521
522
523
524
525
526
521
52'
529
530
531
532
533
534
535
536
531
536
539
540
541
542
543
544
545
54.
541
546
549
550
551
552
553
554
555
55.
551
556
559
560
561
562
563
564
565
56.
561
56'
569
510
511
512
513
514
515
516
511
518
519
560
SOl
562
563
564
565
56.
561
566
569
590
591
592
593
1-'
06-10-85
PAGE
I - - - ---- --- -- - - - - - - - - - - - - - - - - - - - - - - - - - - -;
CMOS EQUATES FOR THI S SYSTEM
:
0070
0071
0080
0000
000 I
0002
0003
000 ...
0005
0006
0007
0008
0009
OOOA
OOOB
OOOC
0000
OOOE
OOOF
0010
0012
-
~~~~ ;~~~
-------~~~ -----~ ;~~--- ---------~ -~ I ~- ~~~~~~~ -~; -~~~~ -~~~~~~~- ;~~~- -----
CMOS-DATA
NMi -
EQU
EQU
011 H
100000008
;
;
;
I/O ADDRESS OF CMOS DATA PORT
DISABLE NMI INTERRUPTS MASK HIGH BIT OF CMOS LOCATION ADDRESS
; ---------- CMOS TABLE LOCAT I ON ADDRESS'S ## ----------------------------------CMOS SECONDS
EQU
OOOH
SECONDS
CMOS-SEC ALARM
EQU
OOIH
SECONDS ALARM
## NOTE:
ALL LOCATIONS
g~g;:~: ~O!E~RM ~~~
gg~~
~: ~~i~;
II !~ET7~M C~~~ ~~E~
CMOS-HOURS
CMOS-HR ALARM
CMOS-DAY WEEK
EQU
EQU
EQU
OO ... H
005H
006H
ALARM
HOURS
HOURS ALARM
DAY OF THE WEEK
A
CMOS-REG-B
CMOS-REG-C
CMOS-REG-D
CMOS-DIAG
CMOS-SHUT DOWN
CMOS-D I SKETTE
EQU
EQU
EQU
EQU
EQU
EQU
OOBH
OOCH
OODH
OOEH
OOFH
0 I OH
STATUS REGISTER B
ALARM
STATUS REGISTER C FLAGS
STATUS REGISTER 0
BATTERY
POST DIAGNOSTIC STATUS RESULTS BYTE
SHUTDOWN STATUS COMMAND BYTE
DISKETTE DR I VE TYPE BYTE
•
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
013H
OI"'H
0 ISH
016H
017H
018H
019H
OIAH
0 I BH
TYPE BYTE
- RESERVED
EQUIPMENT WORD LOW BYTE
BASE MEMORY SI ZE - LOW BYTE (X I 024)
BASE MEMORY SIZE - HIGH BYTE
EXPANSION MEMORY SIZE - LOW BYTE
EXPANSION MEMORY SIZE - HIGH BYTE
F I XED 0 I SK TYPE - DR I VE C EXTENS I ON
FIXED DISK TYPE - DRIVE 0 EXTENSION
- I BH THROUGH 2DH - RESERVED
:E
;C
;K
:S
;U
;M
:E
:0
;
~~~
g~~~
g~g; g~~g~~~~
;:
EQU
EQU
EQU
EQU
EQU
030H
031 H
032H
033H
03 ...H
USABLE MEMORY ABOVE I MEG - LOW BYTE
USABLE MEMORY ABOVE I MEG - HIGH BYTE
DATE CENTURY BYTE (BCD)
128KB INFORMATION STATUS FLAG BYTE
- 3"'H THROUGH 3FH - RESERVED
g~g;:~~~;~ONTH ~~~
g~gF~~~R
~~~
~MOS-DISK
~~~
gg~~
gg:~
g:~~
~~~T~F THE MONTH
~~~~U~T~~G~ ~~~~S~
I
I
AND
SUB.JECT
TO
CHANGE. ONLY THE
POST & BIOS CODE
~~g~~~ Lg~~~~6~~
'-~~_~~~:_:~~~~~:.:
1
;1~~~E~y~~
l~
001'"
00 IS
0016
OOf 7
0018
0019
OOIA
;
CMOS EQUIP
CMOS-B M S LO
CMOS-B-M-S-HI
CMOS-E-M-S-LO
CMOS-E-M-S-HI
CMOS-DTsK T
CMOS:DISK:2
002E
002F
0030
0031
0032
0033
CKSUM HI
CMOS-CKSUM-LO
CMOS-U M S-LO
CMOS-U-M-S-H I
CMOS-CENTURY
CMOS:I NFO 1'28
000 ...
0008
00 I 0
0020
00 ... 0
0080
;---------- CMOS DIAGNOSTIC STATUS ERROR FLAGS WITHIN CMOS_DIAG ---------------CMOS CLK FAIL
EQU
000001008
CMOS CLOCK NOT UPDATING OR NOT VALID
HF FAIL EQU
OOOOIOOOB
FIXED DISK FAILURE ON INITIALIZATION
W MEM SIZE
EQU
OOOIOOOOB
MEMORY SIZE NOT EQUAL TO CONFIGURATION
BAD CDNFIG
EQU
OOIOOOOOB
MINIMUM CONFIG USED INSTEAD OF CMOS
BAD-CKSUM
EQU
0 I OOOOOOB
CHECKSUM ERROR
BAD:BAT
EQU
10000000B
DEAD BATTERY - CMOS LOST POWER
0080
~MOS
= ~~~HB~i~E
; ---------- CMOS I NFORMA T10N FLAGS --------------------------------------------M6"'OK
EQU
10000000B
; 512K -> 640K OPTION INSTALLED
(128K)
EQU
OIOOOOOOB
; FLAG USED BY CMOS SETUP UTILITY
000 I
0080
0080
00 I 0
00 I 0
000'"
0030
OOOA
0002
OOOF
00 I ...
0025
; ---------- 0 I SKETTE EQUATES --------------------------------------------------DUAL
EQU
OOOOOOOIB
MASK FOR COMBO/DSP ADAPTER
INT FLAG
EQU
10000000B
INTERRUPT OCCURRENCE FLAG
DSK-CHG
EQU
10000000B
DISKETTE CHANGE FLAG MASK BIT
DETERMINED
EQU
OOOIOOOOB
SET STATE DETERMINED IN STATE BITS
HOME
EQU
000 I OOOOB
TRACK 0 MASK
00000100B
SENSE DRIVE STATUS COMMAND
SEN'SE DRV ST
EQU
TRK SLAP EQU
030H
CRASH STOP ( ... 8 TP I DR I VES)
QU I ET SEEK
EQU
OOAH
SEEK TO TRACK 10
MAX DRV
EQU
2
MAX NUMBER OF DR I VES
HD 12 SETTLE
EQU
I5
1 .2 M HEAD SETTLE T I ME
H03io SETTLE
EQU
20
320 K HEAD SETTLE TIME
MOTOR:WAIT
EQU
37
2 SECONDS OF COUNTS FOR MOTOR TURN OFF
··
·
0080
00 ... 0
0020
00 I 0
0009
0008
0006
000 ...
0003
0002
000 I
;---------- DISKETTE ERRORS
TI ME OUT
EQU
080H
BAD SEEK
EQU
040H
BAD-NEC
EQU
020H
BAD-CRC
EQU
0 I OH
DMA-BOUNDARY
EQU
009H
BAO-OMA
EQU
008H
MEDTA CHANGE
EQU
006H
RECORD NOT FND
EQU
OO ...H
WR I TE PROTECT
EQU
003H
BAD ADDR MARK
EQU
002H
BAO:CMO EQU
001 H
·
000 I
0002
;---------- DISK CHANGE LINE EQUATES ------------------------------------------NOCHGLN
EQU
OOIH
; NO DISK CHANGE LINE AVAILABLE
CHGLN
EQU
002H
; DISK CHANGE LINE AVAILABLE
0001
0002
000 ...
00 I 0
0020
OOCO
0000
00 ... 0
0080
OOOC
OOCO
; ---------- MED I A/DR I VE STATE I NO I CATORS --------------------------------------TRK CAPA
EQU
0000000IB
80 TRACK CAPABILITY
FMT-CAPA
EQU
OOOOOOIOB
MULTIPLE FORMAT CAPABILITY (1.2M)
DRV-DET
EQU
OOOOOIOOB
DRIVE DETERMINED
MED-DET
EQU
OOOIOOOOB
MEDIA DETERMINED BIT
DBL-STEP
EQU
OOIOOOOOB
DOUBLE STEF BIT
RATE MSK
EQU
IIOOOOOOB
MASK FOR CLEARING ALL BUT RATE
RATE-500
EQU
OOOOOOOOB
500 KBS DATA RATE
RATE-300
EQU
0 I OOOOOOB
300 KBS DATA RATE
RATE-250
EQU
10000000B
250 KBS DATA RATE
STRT-MSK
EQU
00001100B
OPERATION START RATE MASK
SEND=MSK
EQU
11000000B
MASK FOR SEND RATE BITS
0000
0001
0002
0007
;---------- MEDIA/DRIVE STATE INDICATORS COMPATIBILITY ------------------------M3D3U
EQU
OOOOOOOOB
360 MED I AlOR I VE NOT ESTAeLi SHED
M3D1U
EQU
OOOOOOOIB
360 MEDIA,I.2DRIVE NOT ESTABLISHED
MIOIU
EQU
OOOOOOIOB
1.2 MEDIA/DRIVE NOT ESTABLISHED
MED_UNK
EQU
00000 t I IB
NONE OF THE ABOVE
··
···
·
··
ATTACHMENT FAILED TO RESPOND
SEEK OPERATION FAILED
DISKETTE CONTROLLER HAS FAILED
BAD CRC ON 0 I SKETTE READ
ATTEMPT TO DMA ACROSS 6 ... K BOUNDARY
DMA OVERRUN ON OPERATION
MEO I A REMOVED ON DUAL ATT ACH CARD
REQUESTED SECTOR NOT FOUND
WRITE ATTEMPTED ON WRITE PROTECT DISK
ADDRESS MARK NOT FOUND
BAD COMMAND PASSED TO DISKETTE 110
TEST1
5-33
IBM Personal Computer MACRO Assembler
Version 2.00
TEST I ---- 06/ to/85
POWER ON SELF TEST (POST)
POSTEQU. INC - COMMON EQUATES
594
595
596
597
59.
599
600
601
602
603
604
605
606
607
60.
609
610
611
612
613
614
615
616
617
61.
619
620
621
622
623
624
625
626
627
62.
629
630
631
632
633
63.
635
636
637
63.
639
640
641
642
643
644
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
0020
0020
0021
OOAO
OOA I
0070
0010
0008
0000
0000
OOCO
0040
0080
0001
0002
0004
0008
00 I a
0020
0040
0080
c
C
C
C
C
C
C
0081
DDaF
PAGE
~~7-------- I NTE~~~PT EQ~~6~S ------------~~~- ~~-7~~~~~~~~-~~~~~~;-~~-~~~~-----I NT AOO
I NT AD I
INT800
INT801
INT TYPE
INT:=VIOEO
6~~ ~~
020H
021 H
OAOH
OAIH
070H
010H
8259 PORT
8259 PORT
2ND 8259
;
START OF 8259
VIDEO VECTOR
OOOH
ODOH
OCOH
;
;
;
DMA CH.O ADDRESS REGISTER PORT ADDRESS
2ND DMA STATUS PORT ADDRESS
2ND DMA CH. 0 ADDRESS REG I STER ADDRESS
INTERRUPT TABLE LOCATION
-----------~~~ -----~~~~ ------------~ -~~; -;~ ~ ~~; -~~; ~;;~~ -;;~~ -~~~~~;; ------
DMA
DMAI8
DMA 1
i
EQU
EQU
EQU
EQU
EQU
EQU
~ ~~~
---------
EQU
EQU
EQU
--~~C-
----~~~~ ------------~ -~ ~~~ -~ ~ ~~~ -=- ~~;~ - ~~~~~;; ------ -------
; --------- MANUFACTUR I NG PORT ------------------------------------- ------------MFG PORT
EQU
80H
; MANUFACTURING AND POST CHECKPOINT PORT
;
DMA CHANNEL 0 PAGE REG [STER ADDRESS
;--------- MANUFACTURING BIT DEFINITION FOR IiIIMFG ERR FLAG+l -------------------MEM FAIL
EQU
000000018
STORAGE TEST FAILED
(ERROR 20X)
PRO-FAIL
EQU
000000106
VIRTUAL MODE TEST FAILED
(ERROR 104)
LMCS FAIL
EQU
OOOOOIOOB
LOW MEG CHIP SELECT FAILED (ERROR 109)
KYCLK FAIL
EQU
OOOOIOOOB
KEYBOARD CLOCK TEST FAILED (ERROR 304)
KY SYS FAIL
EQU
000 I OOOOB
KEYBOARD OR SYSTEM FAILED
(ERROR 3031
KYBo FAIL
EQU
OOIOOOOOB
KEYBOARD FAILED
(ERROR 301)
OSK FAIL
EQU
OIOOOOOOB
DISKETTE TEST FAILED
(ERROR 601)
KEY:=FAIL
EQU
10000000B
KEYBOARD LOCKED
(ERROR 302)
c
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
OOFO
0000
8000
0000
OOOA
0008
0001
o t 00
0101
5-34
1-7
06-10-85
EQU
POST=SP
~~
EQU
08000H
- - - - - - - - --- - - - ~~~ - -- - - ~ ~ ~;~ - - - - - - - - - --
LF
RVRT
RHRZ
H
X
.LIST
TEST 1
OFOH
;
MATH COPROCESSOR CONTROL PORT
~;;~-;;---------~~c-----~~~~~~----------~-~~;~-;;~~;-;~~~~~~--------------------
EQU
EQU
EQU
EQU
EQU
OOOAH
00001 OOOB
000000018
256
H+ 1
;
POST STACK POINTER
CARR I AGE RETURN CHARACTER
LINE FEED CHARACTER
V IDEO VERT I CAL RETRACE BIT
VIDEO HORIZONTAL RETRACE BIT
HIGH BYTE FACTOR (X 100H)
HIGH AND LOW BYTE FACTOR (X 101H)
IBM Per50nill Computer MACRO A5sembler
Version 2.00
1-8
TESTI ---- 06/10/85
POWER ON SELF TEST jPDST)
06-10-85
SYSOATA.INC - DESCRIPTOR EQUATES
645
646
641
648
649
650
651
652
653
654
655
656
651
658
659
660
661
662
663
664
665
666
661
668
669
610
611
612
613
614
615
616
6TT
618
619
680
681
682
683
684
685
686
681
688
689
690
691
692
693
694
695
696
691
698
699
100
101
102
103
104
105
106
101
108
109
110
111
112
113
114
115
116
111
118
119
120
121
122
123
124
125
126
121
128
129
130
131
132
133
134
135
136
131
138
139
140
141
142
PAGE
INCLUDE SYSDATA.INC
; - - -- - - - - - - - - - - - --- - -- - - - -- - - - - - - - - - - --- -- -- - - - - - - - - - - - - - - - - -- - - - - -- - - - - - - - - --;
PROTECTED MODE EQUATES FOR POST TESTS AND BIOS ROUTINES
-
;
- - - - - - -- - - - - --- - - - - - ---- - - - --- -- -- --- - - - -- - - - - - -- - - - - - - - - - --- -- - -- - --- - - - --- --LENGTH EQUATES FOR PROTECTED MODE TESTS
0
0
0
0
0
0
0
0
0300
0800
0088
0008
1000
4000
FFFF
FFFF
0000
SDA LEN
SYS-IOT LEN
GDT-LENDESC LEN
MCRT-S I ZE
CCRT-S I ZE
ECCRT SIZE
MAX SEG LEN
NULL_ SEG_LEN
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
00300H
256-B
TYPE GOT OEF
TYPE DATA DESC
4-1024
16-1024
OFFFFH
OFFFFH
OOOOOH
SYSTEM DATA AREA LENGTH
256 SYSTEM lOT ENTRIES, 8 BYTES EACH
GOT STRUCTURE LENGTH
LENGTH OF A DESCR I PTOR
MONOCHROME CRT SIZE
COMPATIBLE COLOR CRT SIZE
SIZE OF EACH PORT I ON OF THE ENHANCED
MAX I MUM SEGMENT LENGTH
b4K
NULL SEGMENT LENGTH = 0
=
LOCATION EQUATES FOR PROTECTED MODE TESTS
0
0
0
0
0
0
0
0
0
0
0
0
DOAO
0400
D8AO
0000
OOOB
BOOO
OOOB
0000
OOOA
0000
OOOB
0000
OOOF
0000
0000
SYS lOT LOC
SDA-LOCGOT-LaC
MCRTO LO
MCRTO-HI
CCRTO-LO
CCRTO-H I
ECCRTQ) La LO
ECCRTO-LO-H I
ECCRTO-HI-LO
ECCRTO-HI-HI
CSEGOlI [0 CSEG.-HI
NSEGP-LO
NSEGP=HI
;-----
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
EOU
; THE SYSTEM lOT IS AT THE BOTTOM
ODOAOH
00400H
; SAME AS REAL
(SYS lOT LaC + SYS lOT LEN)
OOOOH
MONOCHROME CRT ADDRESS
(OBOOOOH)
OBH
BOOOH
COMPATIBLE COLOR CRT ADDRESS
(OB8000H)
OBH
OOOOH
(OAOOOOH)
OAH
OOOOH
(OBOOOOH)
OBH
CODE SEGMENT POST I B I OS
OOOOH
; (OFQOOOH) FOR TESTS
OFH
OOOOH
; ABSO
OOH
DEFINITIONS FOR ACCESS RIGHTS BYTES
00F3
CPL3 DATA ACCESS
EOU
11110011B
0
0093
009B
00E2
OOB I
0086
0081
CPLO DATA ACCESS
CPLO-CODE- ACCESS
LOT OESC FREE TSS
I NT GATE
TRAP_GATE
EOU
EOU
EOU
EOU
EOU
EOU
10010011B
1001101lB
11100010B
10000001B
10000110B
10000111B
0
000 I
VIRTUAL_ENABLE
EOU
000000000000000 I B
0
0
0
0
0
-
;-----
;-----
'?
0000
0002
0004
0005
0006
OOOB
?'
??
??
??
?'
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
DO
UNUSED ENTRY
THIS ENTRY POINTS TO THIS TABLE
POST INTERRUPT DESCRIPTOR TABLE
THE REAL SYSTEM DATA AREA FOR POST
CaMPA TI BLE BW CRT FOR POST
COMPATIBLE COLOR CRT FOR POST
ENHANCED COLOR GRAPH I CS CRT (1 b BYTES)
CS - POST lOT, ROM RESIDENT
DYNAMIC POINTER FOR ES
DYNAMIC POINTER FOR CS
DYNAMIC POINTER FOR SS
DYNAMIC POINTER FOR os
TR VALUE FOR THIS MACHINE'S TSS
LOTR VALUE FOR TH I S MACH I NE • SLOT
ENDS
SEGMENT DESCRIPTOR TABLE ENTRY STRUCTURE
DATA DESC
SEG LIMIT
BASE LO WORD
BASE-HI-BYTE
OATA-ACC RI(;HTS
DATA-RESERVED
DATA=DESC
;-----
PROTECTED MODE ENABLE
STRUC
GOT PTR
SYS-IOT PTR
RSDA PTR
C BWCRT PTR
C-CCRT PTR
E-CCRT-PTR
E-CCRT-PTR2
SYS ROM CS
ES TEMPCS-TEMP
SS-TEMP
OS-TEMP
POST TR
POST-TSS PTR
POST-LOTR
POST-LOT PTR
GDT_DEF -
0000
0002
0004
0005
0006
OOOB
;
THE GLOBAL DESCRIPTOR TABLE DEFINITION FOR POWER ON SELF TESTS
GDT_OEF
0000
OOOB
00 I 0
0018
0020
002B
0030
0038
0040
004B
0050
0058
0060
0068
0010
001B
OOBO
OOBB
PRESENT
DPL
3
CODE/DATA SEGMENT
NOT EXECUTABLE
GROW-UP (OFFSET <0 LIMIT)
WRITABLE
ACCESSED
DPL
0
ePL 0 - NON-CONFORM I NG
STRUC
OW
OW
DB
DB
OW
ENDS
SEGMENT LI MIT (I - b5535 BYTES)
24 BIT SE(;MENT PHYS I CAL
ADDRESS {O - (16M- 1 ) )
ACCESS RIGHTS BYTE
RESERVED - MUST BE 0000 FOR THE 802B6
GATE DESCRIPTOR TABLE ENTRY STRUCTURE
(;ATE DESC
ENTRY POINT
CS_SELECTOR
WORD COUNT
GATE-ACC RIGHTS
GATE-RESERVED
GATE=DESC
STRUC
OW
OW
DB
DB
OW
ENOS
DESTINATION ROUTINE ENTRY POINT
SELECTOR FOR DESTINATION SEGMENT
NUMBER OF WOROS TO COPY FROM STACK
ACCESS RIGHTS BYTE
RESERVED - MUST BE 0000 FOR THE B02B6
,LIST
TESTl
5-35
113M Perso"al Computer M~CRQ Assembler
TESTI ---- 06'10/8~
POWER ON SELF TEST
743
744
745
746
7.7
7'8
749
750
751
752
753
75.
755
756
757
758
759
760
761
762
763
76'
765
766
767
768
769
770
771
772
773
77.
775
776
777
118
719
780
78 r
782
763
764
785
766
767
788
789
790
791
792
793
194
795
796
797
198
799
800
801
802
803
80.
805
806
807
808
809
810
811
812
813
81.
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
83.
835
836
837
836
639
840
64,1
842
843
844
645
8.6
847
848
849
850
851
852
853
654
855
856
PAGE
CODE
0000
0000
=
0000
0000 36
30
20
4F
39
36
34
43
49
52
36
35
38
4F
42
50
31
20
0022 36
30
30
4F
2E
42
31
35
004E 20
36
30
31
4F
2E
42
31
35
20
34 34 38 38
30 30 39 39
20 20 43 43
50 50 52 52
20 20 49 49
40 40 20 20
39393838
30
50
40
2E
2C
20
30
52
20
20
31
1-'
VerSio" 2.00
(POST)
06-10-85
SEGMENT WORD PUBL I C
PUBLIC
PUBLIC
PUBLIC
PUBLIC
C8042
OBF" 42
POST 1
START_I
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
CMOS READ I NEAR
CMQS-WR I TE :NEAR
eONFT G BAD: NEAR
Dr! ;NEAR
ODS;NEAR
DUMMY RETURN: NEAR
ERR BEEP: NEAR
GATE A20:NEAR
KBO RESET I NEAR
NM'-'NT:Ni::AR
POST2:NEAR
PR I NT SCREEN: NEAR
PRoe SHUTDOWN: NEAR
ROM CHECK: NEAR
SHUT21NEAR
SHUT3 :NEAR
SHUT4:NEAR
SHUT6:NEAR
SHUTT :NEAR
SHUT9;NEAR
SLAVE VECTOR TABLE:NEAR
STGTST CNT: NEAR
SYSINITI :NEAR
VECTOR TABLE:NEAR
VIOEOJS'ARMSIB'fTE
ASSUME
CS: CODE, OS: NOTH I NG, ES: NOTH I NG, SS: NOTH I NG
POST I
PROC
NEAR
BEGIN
EQU
DB
•
39
2E
43
31
39
'6480090COPR.
I BM CORP.
1981, 1985
'
;COPYRIGHT NOTICE
EVEN
;
6B
;
;
;
I
I
;
76
7A
9F
02
72
DO
70
74
- ------- - - - -- - - - -- - - - -- - - - - - - - ---- - - - - -TEST.OI
80286 PROCESSOR TEST (REAL MODE)
DESCR I PTI ON
VER I FY FLAGS, REG I STERS
AND CONDITIONAL .JUMPS.
:
:
- - - --- - - --- ------------------- - - - -- -- ---
0580
10
DS:DATA
SHL
00
OZ
AH,CL
ERR02
AH,l
ERR02
C7A
o I SABLE INTERRUPTS
FLAG MASK IN (AH) AND NMI MASK IN (ALl
01 SA8LE NM I INTERRUPTS
SET "SF" ~ZF" "AF" "PF" "CF" FLAGS ON
GO TO ERROR ROUTINE IF "CF" NOT SET
GO TO ERROR ROUTINE IF "ZF" NOT SET
GO TO ERROR ROUTINE IF "PF" NOT SET
GO TO ERROR ROUTINE IF "SF" NOT SET
LOAD FLAG IMAGE TO (AH)
LOAD COUNT REG I STER WITH SH I FT COUNT
SH I FT "AF" I NTO CARRY 81 T PQS I TI ON
GO TO ERROR ROUTINE IF "AF" NOT SET
SET THE "OF" FLAG ON
SETUP FOR TES T I NG
GO TO ERROR ROUT I NE IF" OF" NOT SET
SET (AH) = 0
CLEAR "SF". "CF", "ZF", AND "PF"
GO TO ERROR ROUTINE IF "CF" ON
GO TO ERROR ROUTINE IF "ZF" ON
GO TO ERROR ROUTINE IF "SF" ON
GO TO ERROR ROUTINE IF "PF" ON
LOAD FLAG IMAGE TO (AH)
SH I FT .. AF" I NTO CARRY BIT pas I TI ON
GO TO ERROR ROUT I NE I F ON
CHECK THA T ~ OF" I S CLEAR
GO TO ERROR ROUT I NE I F ON
CONT I NUE CONF IDENCE TESTS IF" ZF" SET
HLT
JMP
ERR02
ERROR HALT
ERROR LOOP TRAP
MOV
MOV
AX,OATA
DS,AX
SET DATA SEGMENT
1NTO THE (OS) SEGMENT REG I STER
MOV
DUT
SAHF
oNC
oNZ
oNP
oNS
LAHF
27
25
23
21
as
AX.OD500H+CMOS REG O+NM I
CMOS_PORT, AL
ERR02
ERR02
ERR02
ERR02
XDR
CL,5
AH,CL
ERR02
AL.40H
AL,I
ERR02
AH,AH
OF
SAHF
JBE
ERR02
00
08
OP
MDV
EC
rA
40
EO
14
E4
SHR
JNC
MDV
SHL
oND
oS
ERR02
ERR02
LAHF
EC
06
E4
02
03
SHR
OC
ERRP2:
F4
EB FO
C7A:
;-----
5-36
; EVEN BOUNDARY
; EVEN MODULE
;000 MODULE
;COPYRIGHT NOTICE
(POST!)
CLI
0083
0083 88 ---- R
0086 8E 08
0088
008A
008C
0?8E
! 9 8 5
! 9 8 5
11998855'
;PAD
INITIAL RELIABILITY TESTS --
START_I:
FA
88
E6
9E
73
75
78
79
9F
BI
02
73
BO
DO
71
32
9E
76
IBM
IBM
IIBBMM
- - - -- -- - - --- - ---- - ---- - ----- - ------ -- - ---- - -----
ASSUME
0071
0073
0075
0076
0078
007A
007C
007E
0080
0060
0081
COP R •
COP R •
CCOOPPRR ••
DB
;
0050
0050
0051
0054
0056
0057
0059
0058
0050
005F
0060
0062
0064
0066
0068
006A
006C
006E
006F
6480090
6480091
'66448800009901
E4
A8
15
E9
64
04
03
0123 R
TESTl
CHECK FOR PROCESSOR SHUTDOWN
IN
TEST
oNZ
oMP
AL,STATUS PORT
AL,SYS FLAG
C78
SHUTO
READ CURRENT KEYBOARD PROCESSOR STATUS
CHECK FOR SHUTDOWN I N PROCESS FLAG
GO IF YES
ELSE CONT I NUE NORMAL POWER ON CODE
IBM Personal Computer MACRO Assembler
TEST I ---- 06/10/85
POWER ON SELF TEST
851
858
859
8bO
861
862
863
864
865
866
861
868
86'
870
871
1-10
06-10-85
Version 2.00
(POST)
PAGE
0091
0091
0093
0095
0097
0099
009B
0090
6~~~-BO
Eb
EB
E4
3C
86
74
8F
70
00
71
09
C4
41
CHECK FOR SHUTDOWN 09
AL.CMOS SHUT OOWN+NMI
CMOS PORT. AL1+2 AL.CMOS DATA
AL,09H AL.AH
"OV
OUT
J"P
IN
C"P
XCHG
JE
; -----
C1C
CMOS ADDRESS FOR SHUTDOWN BYTE
I/O DELAY
GET REQUEST NUMBER
WAS IT SHUTDOWN REQUEST 97
SAVE THE SHUTDOWN REQUEST
BYPASS INITIALIZING INTERRUPT CHIPS
CHECK FOR SHUTDOWN OA
009F 80 FC OA
00A2 74 3C
C"P
JE
AH,OAH
C1C
WAS I T SHUTDOWN REQUEST A?
BYPASS INITIALIZING INTERRUPT CHIPS
00A4 2A CO
00A6 E6 FI
SUB
OUT
AL.AL
X287+ I. AL
INSURE MATH PROCESSOR RESET
812
873
874
815
816
811
818
879
880
881
882
883
884
885
88b
887
888
889
890
691
892
8.3
8 ••
8'5
896
897
898
899
900
90 I
902
903
904
905
906
907
908
909
.10
RE-INITIALIZE THE 6259
;
00A8
OOAA
OOAC
OOAE
OOBO
00B2
00B4
00B6
00B8
OOBA
OOBC
OOBE
OOCO
00C2
BO
E6
EB
BO
E6
EB
BO
Eb
EB
BO
Eb
EB
BO
Eb
II
20
00
08
21
00
04
21
00
0I
21
00
FF
21
00C4
00C6
OOC8
OOCA
OOCC
OOCE
0000
0002
0004
0006
0008
OODA
OODC
OODE
BO
E6
ES
SO
E6
BO
E8
E6
E8
80
E6
E8
BO
E6
I I
AO
00
70
AI
02
00
AI
00
0I
AI
00
FF
AI
OUT
"2
J"P
"OV
'.2
OUT
'.2
'.2
J"P
"OV
-- - - - --- - - --- -- - -- - - - - -- - - - - - - - - - - - - - - - - --- - - -- - - - - - - ---RE-INITIALIZE THE 8259
OUT
'.2
'.2
'.2
'.2
J"P
"OV
AL,INT TYPE
INTBOI-;-AL
AL,02H
OUT
"OV
J"P
AL,OIH
INT80l,AL
OUT
J"P
"OV
-
EDGE,
:
SLAVE
ICW4
WAIT STATE FOR 110
SETUP [CW2 - INTERRUPT TYPE 70
SETUP I CW3 -
SLAVE LEVEL 2
1/0 DELAY
SETUP ICW4 -
8086 MODE,
(l0-7F1
AL.OFFH
INTBOI,AL
OUT
SLAVE
WAIT STATE FOR I/O
MASK ALL I NTERRUPTS OFF
SHUTDOWN - RESTART
RETURN CONTROL AFTER A SHUTDOWN COMMAND I S ISSUED
DESCR I PT I ON
A TEST IS MADE FOR THE SYSTEM FLAG BEING SET.
IF THE SYSTEM FLAG IS
SET, THE SHUTDOWN BYTE I N CMOS I S USED TO DETERM I NE WHERE CONTROL IS
RETURNED •
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
.2..22
.23
'25
.26
'21
.28
92.
=0
=
=
1
2
=
=
4
5
=
=
8
9
SOFT RESET OR UNEXPECTED SHUTDOWN
SHUT DOWN AFTER MEMORY SIZE
SHUT DOWN AFTER MEMORY TEST
SHUT DOWN WITH MEMORY ERROR
SHUT DOWN WITH BOOT LOADER REQUEST
JMP DWORD REQUEST - (INTERRUPT CHIPS & 287 ARE INITIALIZED)
PROTECTED MODE TEST3 PASSED
PROTECTED MODE TEST3 FAILED
PROTECTED MODE TEST! FAILED
BLOCK MOVE SHUTDOWN REQUEST
JMP DWORD REQUEST - (W/O INTERRUPT CHIPS INITIALIZED)
=3
=6
=7
=A
NOTES:
• 30
.31
.32
'33
.3.
935
960
961
962
963
964
965
966
967
968
969
970
ICWI
INT80l,AL
OUT
J"P
"OV
'"
.5.
INTERRUPT #2 CONTROLLER CHIP
AL,IIH
INT800,AL
"OV
912
913
91.
915
916
• 11
918
91'
.20
.21
• 36
.31
.38
939
940
941
942
943
944
945
946
947
948
949
950
951
.52
.53
95.
955
956
957
958
(8-F)
WAIT STATE FOR 1/0
MASK ALL INTERRUPTS OFF
(V IDEO ROUT I NE ENABLES INTERRUPTS)
AL,OFFH
INTAOI,AL
OUT
I CW4
I/O WAIT STATE
SETUP I CW4 - MASTER, 8086 MODE
AL,OIH
INTAO\ ,AL
OUT
EDGE, MASTER,
WAIT STATE FOR I/O
SETUP I CW3 - MASTER LEVEL 2
AL.04H
INTAOI,AL
J"P
"OV
-
WAIT STATE FOR I/O
SETUP I CW2 - I NTERRUPT TYPE 8H
AL.08H
INTAO\ ,AL
OUT
J"P
"OV
;
CONTROLLER CHIP;
I CW I
AL,IIH
INTAOO,AL
"OV
;
INTERRUPT "
-- -- - - - - - - - - - -- - - - --- - - --- -- ---- - -- - --- -- - -- - - ---- - - - - --
RETURNS ARE MADE WITH I NTERRUPTS AND NM I DISABLED •
USER MUST RESTORE SS;SP (POST DEFAULT SET
0000:0400),
ENABLE NON-MASK ABLE INTERRUPTS (NM I) WITH AN OUT TO
PORT 70H WITH HIGH ORDER BIT OFF, AND THEN ISSUE A
ST I TO ENABLE INTERRUPTS.
FOR SHUTDOWN (5) THE USER
MUST ALSO RESTORE THE INTERRUPT MASK REGISTERS •
=
CHECK FROM WHERE
ODED
ODED
00E2
OOE4
ODES
00E7
OOE9
OOEB
OOED
OOEF
OOF2
00F4
00F6
80 8F
Eb 70
90
2A CO
E6 71
86 EO
3C OA
77 34
BE 0103 R
03 FO
03 FO
2E: 8B IC
"OV
AL, CMOS SHUT DOWN+NM I
CMOS_PORT, AL-
C"P
JA
"OV
AL,AL
CMOS OATA,AL
AH,AL
AL,OAH
SHUTO
S I ,OFFSET BRANCH
SI,AX
SI,AX
BX,CS: [SI]
OUT
Nap
SUB
OUT
XCHG
AOO
AOO
"OV
CLEAR CMOS BYTE
I/O DELAY
SET 8YTE TO a
COMPARE WITH MAX I MUM TABLE ENTR [ES
SKIP TO POST IF GREATER THAN MAXIMUM
POINT TO THE START OF THE BRANCH TABLE
POINT TO BRANCH ADDRESS
MOVE BRANCH TO ADDRESS TO BX REGISTER
SET TEMPORARY STACK FOR POST
00F9
OOFC
OOFE
0101
B8
8E
BC
FF
---- R
00
0400 R
E3
0103
a I 05
0107
0 I 09
OIOB
0100
a I OF
alii
0113
0 I IS
0117
0123
0990
0000
0000
0000
0119
0000
0000
0793
0000
OIIF
R
R
E
E
E
R
E
E
R
E
R
BRANCH:
"OV
"OV
"OV
J"P
AX, ABSO
SS,AX
SP, OFFSET <><><><><><><> <> <><><>
<><> CHECKPO I NT 0 I <><>
AL,OIH
MFG_PORT. AL
READ/WRITE/TEST THE 80286 REGISTERS WITH ONE'S AND ZERO'S
"OV
51C
JNC
AX ,OFFFFH
SETUP ONE'S PATTERN IN
SET CARRY FLAG
GO IF NO CARRY
ERROl
(AX)
C8:
C9:
"OV
MOV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
JNC
XOR
JNZ
CLC
J"P
DS,AX
BX,DS
ES,BX
CX,ES
SS,CX
DX,SS
SP,DX
BP,SP
SI,BP
01,51
OR
JZ
AX,DI
CIOA
WRITE PATTERN TO ALL REGISTERS
C9
AX,DI
ERROl
PATTERN MAKE IT THROUGH ALL REGISTERS
NO - GO TO ERROR ROUT I NE
CLEAR CARRY FLAG
c.
TSTIA
ZERO PATTERN MAKE IT THROUGH?
YES - GO TO NEXT TEST
ERROl:
HLT
HALT SYSTEM
INSURE THAT CMOS CLOCK
"OV
OUT
Nap
IN
AND
XCHG
;-----
,
:
;
;
~
AL,CMOS DATA
AL,OOOOOI11B
AL,AH
XCHG
~~~!RPORT • AL
CMOS_DATA.AL
"OV
Nap
OUT
Nap
IN
CMOS_PORT .AL
AL ,CMOS_REG_C+NMI
AL,CMOS_oATA
ADDRESS TO BOTH (AH) AND (AL)
ADDRESS CMOS ALARM BYTE WITH NM I =OFF
I/O DELAY
GET THE CURRENT CONTROL RECiISTER
CLEAR SET,PIE,AIE, AND SQWE BITS
SAVE IT
ADDRESS CMOS FLAGS BYTE WITH NM I =OFF
I/O DELAY
I/O DELAY
READ STATUS TO CLEAR PENDING INTERRUPT
RESET VIDEO
"OV
"OV
OUT
INC
"OV
OUT
"OV
IN
"OV
IN
"OY
"OV
OUT
"OV
OUT
;
AX,X· (CMOS REG B+NMI
CMOS_PORT ,AL
-
OUT
OUT
INTERRUPTS ARE DISABLED
AL,O
OX.03D8H
DX,AL
AL
DL,088H
DX,AL
DL,OBAH
AL.DX
DL,ODAH
AL,DX
AL,O
DL,OCOH
DX,AL
AL,111I11008
PORT_B,AL
CLEAR OAT A BYTE TO 0 I SABLE V IDEO
GET COLOR MODE CONTROL PORT ADDRESS
o I SABLE COLOR V IDEO
MONOCHROME MODE RESET MASK
GET ADDRESS OF MONOCHROME MODE CONTROL
DISABLE B/W VIDEO, ENABLE HIGH RES
ADDRESS OF MONOCHROME STATUS REGISTER
READ STATUS TO DISABLE ECiA VIDEO
ADDRESS OF COLOR MODE STATUS REGISTER
READ STATUS TO DISABLE EGA VIDEO
SELECT ATTR I BUTE PALETTE REG I STER 0
WR I TE 0 TO ATTR I BUTE ADDRESS REG I STER
TO DI SABLE EGA VIDEO
o I SABLE PAR I TY CHECKERS
- - --- - - ---- ------- ------------------- - -TEST. 02
ROM CHECKSUM TEST I
DESCRIPTION
A CHECKSUM 1 S DONE FOR THE :32K
READ ONLY MEMORY MODULES (TWO)
:
CONTAINING POST, BASIC AND BIOS.I
--- - ---- ---- ---- - ---- --- ---- - - - - - - - -- - --
:-----
CI I;
CHECKPOINT 02
"OV
OUT
AL.02H
MFG_PORT, AL
ASSUME
SS:CODE
AX,CS
SS,AX
oS,AX
SI,SI
BX.BX
CH,080H
"OV
MOV
"OV
XOR
XOR
"OV
LODSW
ADD
ADD
BL,AH
BL,AL
LOOP
CII
JNC
CIIE
JZ
CIIA
<> <> <> <><><><><><><><><>
<><> CHECKPOINT 02 <><>
SETUP SS SEGMENT REG I STER
SET UP DATA SEGMENT TO POINT TO
ROM ADDRESS START
CLEAR CHECK REG I STER
COUNT FOR 32K WORDS
MOVE TWO BYTES INTO AX -- 51=51+2
ADO ODD BYTE AT DS:SI+I TO CHECKSUM
ADD EVEN BYTE AT OS: S I TO CHECKSUM
LOOP COUNT FOR 65K BYTES (32K WORDS)
EXIT IF ~LOOP~ RESET THE CARRY FLAG
(NOTE: MODEL BYTE MUST NOT = ZERO)
CONTINUE IF CHECKSUM VALID (ZERO)
CI1E:
HLT
TEST.03
VER I FY CMOS SHUTDOWN 8YTE
ELSE HALT IF CHECKSUM PROBLEM
IBM Personal Computer MACRO Assembler
TEST! ---- 06/ I 0/85
POWER ON SELF TEST
1085
108b
1087
1088
1089
1090
1091 019F
1092 019F 80
1093 0 I A I E6
1094
1095 0 I A3 89
1096 OIAb 84
1097 0lA6
1098 0lA8 80
1099 OIAA E6
1100 OIAC 8A
1101 OIAE E6
I 102 0180 80
1103 0182 90
1 104 0183 Eb
I 105 0185 90
1106 018b E4
11010188 3A
1105 018A 15
1109 018C 00
I I 10 018E E2
1111
I I 12
1113
I I 14
IllS
I I 16
1117
I 118
1119
1120 OICO 88
\ 121 0lC3 8E
I \ 22 01 C5 80
1123 0lC1 E6
1124
1 125
1126
I 121 01 C9 E6
1128 01Ca Eb
1129
1\30
1131
1132 OICO 88
1133 0101 80
1134 0103 E6
1135 0105 EB
1136 0101 8A
1137 0109 E6
1138 olDe 81
1139 0100
1140 0100 eo
1141 01DF Ee
1142 OIEI E6
1143 0lE3 50
1144 01E6 14
1145 0lE6 E4
1146 OlEA OA
1141 DIEC E2
1148 OIEE FE
1\49 OIFO 15
11500lF2F4
1151
1152
1153
1154
1155
1156
1151
1158
1159
1160
1161
l1b2 01F'3 80
1163 01F'5 E6
1164
IIb5 OIFT 6A
IIb6 0lF9 28
1161 OIFB E6
1168 OIF'D 81
IIb9 01FF
1110 01FF BO
1 11\ 0201 E6
1112 0203 E8
11130205 E8
11740201 E4
1115 0209 22
111b 0208 14
I 111 0200 E2
1118 020F FE
1179021175
1180 0213 F4
118[
1182
1183
1184
1185
118b
1187
1188
1189
1190
119(
1192
1193
1194
[19502[4
1196 0214 88
11970211 8E
1198 0219 80
1-12
06-\ 0-85
Version 2.00
(POST)
; DESCRIPTION
ROLLING BIT WRITTEN AND
VERIFIED AT SHUTDOWN ADDRESS.
VER I FY AND CLEAR SHUTDOWN FLAG
03
80
0009
01
<><> <> <> <><><><><><> <><>
<><> CHECKPO I NT 03 <><>
"OV
OUT
"L,03H
MFG_PORT ,AL
"OV
"OV
CX,09H
AH,I
"OV
OUT
"OV
OUT
"OV
Nap
OUT
Nap
IN
CMP
JNZ
RCL
LOOP
AL, CMOS_SHUT _DOWN+NM I
CMOS _PORT ,AL
AL,AH
CMOS_DATA,AL
AL, CMOS_SHUT _OOWN+NM I
LOOP COUNT
START WITH BIT 0
C\ lB:
8F
70
C4
71
8F
70
71
C4
92
04
E8
;
;
;
;
;
I
CMOS_PORT ,AL
110 DELAY
AL,CMOS_DATA
AL,AH
ERROl
AH,I
CllB
MUST BE THE SAME
ERROR IF NOT
ROLL A a IT THROUGH SHUTDOWN BYTE
LOOP TILL DONE
-- -- - --- - - - - -------- - - - - -- -- -- - -- - - -- - -TEST. 04
8254 CHECK TIMER
DESCRIPTION
SET T I MER COUNT
CHECK THAT TIMER
1 ALL BITS ON
:
:
:
81TS ON
:
-- -- --- - - - - - - -- -- --- - -- - -1 - -ALL
- - - - -- -- - - - -ASSUME
MOV
MOV
MOV
OUT
---- R
08
04
80
:-----
DS:DATA
AX,DATA
DS,AX
AL.,04H
MFG _PORT, AL
SET DATA SEGMENT
<><><><><><><><><><><><>
<><> CHECKPOINT 04 <><>
DISABLE DMA CONTROL.LER
08
DO
OUT
OUT
lb 0012 R
54
43
00
Cl
41
05
MOV
"OV
OUT
JMP
"OV
OUT
MOV
(AU ALREADY = 04H
01 SA8L.E OMA CONTROLL.ER I
o I SABLE OMA CONTROL.LER 2
DMA05,AL
DMAI8,AL
VERIFY THAT TIMER
I
ox ,IltRESET
FUNCTIONS OK
SAVE RESET FLAG WHILE REFRESH
SEL.ECT TIMER I,LSB,MODE 2
FL.AG
AL.,54H
TIMER+3,AL
"OV
JMP
OUT
CMP
JE
IN
OR
L.OOP
OEC
JNZ
HLT
$'2
AL.,CL.
T1MER+I,AL
BH,05H
LOOP COUNT
TIMERI BITS ON
L.ATCH TIMER-I COUNT
110 DELAY
AL.,40H
$'2
TIMER+3,AL.
8L,OFFH
CI3
AL,T1MER+I
8L.,AL.
CO2
BH
CO2
YES - SEE IF ALL 81TS GO OFF
TIMER I BITS OFF
READ TIMER T COUNT
ALL BITS ON IN TIMER
TIMERI_8ITS_ON
- - --- - - -- -- ---- - -- - - - --- - ----------:
; TEST .05
: - ----
;
05
80
8254 CHECK TIMER
DESCR I PTI ON
SET TIMER COUNT
CHECK THAT TIMER
-----
C13:
C3
C9
41
05
I
ALL. 8IT OFF
I
:
AL.L. BITS OFF:
TRY AGAIN
TIMER I fAILURE,
T I MER 1_81 TS_OFF
HAL.T SYSTEM
:
CHECKPO I NT 05
MOV
OUT
AL,05H
MFG_PORT, AL
"OV
SUB
OUT
MOV
AL.8L.
CX,CX
TlMER+ I,AL.
BH,05H
MOV
OUT
JMP
JMP
IN
ANa
JZ
LOOP
OEC
JNZ
HLT
AL,40H
TIMER+3,AL
<><><><><><><><><><><> <>
<><> CHECKPO I NT 05 <><>
SET T [MER
I COUNT
SET TRY AGA I N COUNT
TIMER LOOP
LATCH-T I MER I COUNT
C14:
40
43
00
00
41
08
01
FO
CF
EC
IS OFF
110 DELAY
SET I N I TI AL TI MER COUNT TO 0
C12:
40
00
43
FB FF
08
41
08
EF
CF
E8
I
;
OUTPUT ROLLING 81T
READ CMOS
I/O DELAY
DEL.A Y FOR T I MER
ADDED DELAY FOR T I MER
READ TIMER I COUNT
$'2
$'2
AL,TIMER+I
BL,AL
CIS
CI.
BH
CI.
GO TO WRAP DMA REGISTER TESTS
TIMER_LOOP
HALT SYSTEM
;---------------------- ----------------TEST.Ob
8231 oMA 0 INITIALIZATION
CHANNEL REG I STER TEST
~SCR[~I~
:
THE 8237 OMA CONTROL.LER.:
WRITE/READ THE CURRENT ADDRESS
:
AND WORD COUNT REG I STERS FOR
ALL CHANNEL.S.
o I SABLE
;
; ----;-----
-- --- - -- - - - - - - ---- - - - --- - ---------CHECKPOINT 06
C15:
---- R
08
06
MOV
"OV
MOV
AX,OATA
DS,AX
AL,ObH
;
SET DATA SEGMENT
TESTl
5-39
IBM Personal Comp .... ter MACRO Assembler
TEST 1 ---- 06/10/85
POWER ON SELF TEST
1199 0218 E6 80
1200021089 16 0072 R
120 I 0221 E6 00
1202
1203
1204
1205 0223 80 FF
1206 0225 8A 08
f 207 0227 8A F8
1208 0229 89 0008
1209 022C 8A 0000
1210 022F EE
12110230E800
1212 0232 EE
1213 0233 BO 01
1214 0235 EB 00
1215 0237 EC
1216 0238 EB 00
1217 023A 8A EO
1218 023C EC
1219 0230 38 08
1220 023F 74 01
1221 0241 F4
1222 0242
1223 0242 42
1224 0243 E2 EA
1225 0245 FE CO
1226 0247 74 DC
1227
1228
1229
1230 0249 80 F8 55
1231 024C 74 09
1232 024E 80 F8 AA
f 233 0251 74 08
1234 0253 80 55
1235 0255 E8 CE
1236
f 237
1238
1239 0257 80 AA
1240 0259 E8 CA
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255 0258 80 07
1256 0250 E6 80
1257 025F E6 DA
1258
1259
1260
1261 0261 BO FF
1262 0263 8A 08
1263 0265 8A F8
1264 0267 B9 0008
1265 026A BA OOCO
1266 0260 EE
1267 026E E8 00
1268 0270 EE
12690271 80 01
1270 0273 E8 00
1271 0275 EC
1272 0276 E8 00
1273 0278 8A EO
1274 027A EC
1275 0278 38 08
1276 0270 74 01
1277 027F F4
1278 0280
1279 0280 83 C2 02
1280 0283 E2 E8
1281 0285 FE CO
1282 0287 74 DA
1283
1284
1285
1286 0289 80 F8 55
1287 028C 74 09
1288 028E 80 F8 AA
12890291 7408
1290 0293 80 55
1291 0295 E8 CC
1292
1293
1294
1295 0297 80 AA
1296 0299 Ea C8
1297
1298
1299
1300 0298
1301 029888 IE 0072 R
1302 029F A3 0010 R
1303 02A2 BO 12
1304 02A4 E6 41
1305
1306
1307
1308 02A6 2A CO
'309 02A8 E6 08
310
1311
1312 02AA E6 00
5-40
TESTl
Version 2.00
(POST)
1-13
06- 10-85
;
OUT
MDY
DUT
;----C161
C17:
;
;
<><> CHECKPO I NT 06 <><>
RESTORE SOFT RESET FLAG
SEND MASTER CLEAR TO DMA
WRAP DMA 0 CHANNEL ADDRESS AND COUNT REGISTERS
MDY
MDY
MDY
MDY
MDY
DUT
"MP
DUT
MOY
"MP
IN
"MP
MOY
IN
CMP
"E
HLT
Al,OFFH
al,Al
8H,Al
CX,8
OX IDMA
OX,Al
WRITE PATTERN "FF" TO All REGISTERS
SAVE PATTERN FOR COMPARE
SETUP lOOP COUNT
SETUP I/O PORT ADDRESS OF REG I STER
WRITE PATTERN TO REGISTER, lSB
I/O DELAY
MSB OF 16 BIT REG[STER
Al TO ANOTHER FA TTERN BEFORE READ
I/O DELAY
READ 16-81T DNA CH REG, lS8
2ST DNA
I/O DELAY
SAVE lSB OF 16-81T REGISTER
READ MS8 OF DNA CHANNEL REGISTER
PATTERN READ AS WRITTEN?
YES - CHECK NEXT REG I STER
NO - HALT THE SYSTEM
NXT DNA CH
SET-I/O-PORT TO NEXT CHANNEL REGISTER
WRITE PATTERN TO NEXT REGISTER
SET PATTERN TO 0
YES CONT I NUE
,'2
DX,Al
Al,OIH
"2
"2
Al,DX
AH,Al
Al,DX
aX,AX
CI8
C18:
INC
lOOP
INC
"Z
OX
CI1
AL
CI6
WR[TE DMA WITH 55 PATTERN
CMP
"Z
CMP
"Z
MOY
"MP
Bl,055H
C19
Bl,OAAH
C20
Al,055H
C16
CHECK
GO IF
CHECK
GO [F
;-----
WRITE DMA WITH AA PATTERN
C19:
MOY
"MP
;
;
;
;
IF "55" PATTERN DONE
YES
IF "AA" PATTERN DONE
YES
Al,OAAH
C16
--- ------------------- -----------------TEST.07
8237 DMA I INITIALIZATION
CHANNEL REGI STER TEST
DESCR I PT I ON
DISABLE 8237 DMA CONTROllER 1.
WR[TE/READ THE CURRENT DMA I
ADDRESS AND WORD COUNT
REG I STERS FOR All CHANNELS.
---- ------------------ -----------------CHECKPO I NT 07 -
C20:
MOY
OUT
OUT
WRAP DNA
CI6A:
CI7A:
MOY
MOY
MDY
MOY
MOY
OUT
"MP
OUT
MDY
"MP
IN
"MP
MOY
IN
CMP
"E
DMA
1
Al,07H
MFG PORT ,Al
DMA1+0DH-2,Al
1 CHANNEL ADDRESS AND COUNT REGISTERS
AL,OFFH
Bl,Al
8H,AL
CX,8
OX ,DMA 1
DX,Al
"2
DX,AL
Al,OIH
"2
AL,DX
'.2
AH,Al
AL,DX
BX,AX
CI8A
HLT
cr8Al
ADO
LOOP
INC
"Z
;-----
<><><> <> <><> <><> <><><> <>
<><> CHECKPOINT 07 <><>
SEND MASTER CLEAR TO 2ND DMA
DX,2
CI7A
AL
CI6A
WRITE PATTERN FF TO All REGISTERS
SAVE PATTERN FOR COMPARE
SETUP LOOP COUNT
SETUP I/O PORT ADDRESS OF REG I STER
WRITE PATTERN TO REGISTER, LSB
I/O DELAY
MS8 OF 16 8[T REGISTER
Al TO ANOTHER PAT 8EFORE RD
I {a OElAY
READ 16-BIT DMA CH REG, lS8
2ST DMA
I/O DELAY
SAVE LSB OF 16-BIT REGISTER
READ MS8 OF DMA CH REG I STER
PATTERN READ AS WR ITTEN?
YES - CHECK NEXT REG I STER
NO - HALT THE SYSTEM
NXT DMA CH
SET-I/O-PORT TO NEXT CHANNEL REGI STER
WRITE PATTERN TO NEXT REGISTER
SET PATTERN TO 0
YES CONTI NUE
WRITE DMA WITH 55 PATTERN
CMP
"Z
CMP
"Z
MOY
"MP
Bl,55H
C20A
8l,OAAH
C21
Al,55H
CI6A
CHECK
GO IF
CHECK
GO IF
IF 55 PATTERN DONE
YES
IF AA PATTERN DONE
YES
WRITE OMA W[TH AA PATTERN
C20A:
MOV
"MP
;-----
INITIALIZE AND START MEMORY REFRESH
C21 :
MOY
MOY
"OY
DUT
; -----
Al,OAAH
CI6A
ex, ~RESET FLAG
PEQUIP FlAG,AX
AL, 18 TIMER+! ,AL
GET THE RESET FLAG
DO A DUMMY MEMORY WR ITE 8EFORE REFRESH
START REFRESH TIMER
SET DMA COMMAND
SUB
OUT
Al,Al
OMA+8,Al
OUT
DMAI8,Al
OACK SENSE lOW,DREQ SENSE HIGH
lATE WRITE, FIXED PR[ORITY, NORMAL
TIM I NG, CONTROLLER ENABLE, CHO ADDRESS
HOLD 0 I SA8LE. MEMORY TO MEMORY 0 I SABLE
SAME TO SECOND CONTROLLER
IBM Personal Computer MACRO Assembler
TEST 1 ---- 06/10/65
POWER ON SELF TEST
1313
1314
1315
1316 02AC 80 40
1317 02AE E6 08
1316028080 CO
1319 0282 E6 06
1320 0284 E8 00
1321 0286 BO 41
1322 0286 E6 08
1323 028A E6 06
1324 02BC E8 00
1325 02BE BO 42
1326 02CO E6 OB
1327 02C2 E6 06
1326 02C4 EB 00
1329 02Cb BO 43
1330 02C8 E6 OB
1331 02CA E6 Db
1332
1333
1334
1335 02CC 89 IE 0072 R
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346 0200 80 08
1341 0202 E6 80
1348 0204 2A CO
1349 0206 BA 0081
1350 0209 B9 DOFF
1351 02DC EE
1352 0200 42
1353 02DE FE CO
1354 02EO 81 FA 008F
1355 02E4 75 Fb
1356 02E6 86 EO
1357 02E8 FE CC
1358 02E,4, 4,4,
1359 02E8 2A CO
13bO 02ED EC
1361 02EE 3A C4
1362 02FO 75 30
1363 02F2 FE CC
1364 02F4 4A
1365 02F5 81 FA 0080
13b6 02F9 15 FO
1367 02FB FE C4
1368 02FD 8A C4
1369 02FF E2 DB
1370
1311
1312
1373 0301 130 CC
1314 0303 8A 008F
1375 0306 8A EO
1376 0308 EE
1371
1318
1379
1380 0309 2A CO
1381 030B EC
1382 030C 3A C4
1383 030E 75 12
1384031080 FC CC
1385 0313 15 04
13860315 BO 33
13870311 E8 EA
1388 0319
1389031980 FC 00
1390 031C 14 05
1391 031E 2,4, CO
1392 0320 E8 EI
1393
1394
1395 0322
1396 0322 F4
! 391
1398
1399
1400
1401
1402
1403
1404
1405
1406 0323
1407 0323 80 09
1408 03~5 E6 80
1409 0327 28 C9
1410 0329
14110329E461
1412 032B A8 10
1413 0320 El FA
1414 032F E3 Fl
1415 0331
1416 0331 E4 61
1417 0333 A8 10
1418 0335 EO FA
1419 0331 E3 E9
1420
1421
1422
1423
1424
1425
1426
; -----
Version 2.00
(POST)
MODE SET ALL DMA CHANNELS
MOV
OUT
MOV
OUT
110 DELAY
SET MODE FOR CHANNEL 1
'.2
SET MODE FOR CHANNEL 5
I/O DELAY
SET MODE FOR CHANNEL 2
,'2
SET MODE FOR CHANNEL 6
I/O DELAY
SET MODE FOR CHANNEL 3
AL,42H
DMA+OBH,AL
DMAI8+06H,AL
AL,43H
DMA+OBH, AL
DMAI8+06H,AL
SET MODE FOR CHANNEL 1
RESTORE RESET FLAG
MOV
;-
~~~~: ~ ~--
I
SET CASCADE MODE ON CHANNEL 4
"2
AL,41H
OMA+OBH,AL
DMAI8+06H,AL
OUT
OUT
"MP
MOV
OUT
OUT
"MP
MOV
OUT
OUT
;
SET MODE FOR CHANNEL 0
AL,40H
DMA+08H,AL
AL,OCOH
DMAI8+06H,AL
""P
MOV
; -----
1-14
06-10-85
ORESET_FLAG,BX
-- ---- ---------- - --- ------- ---
DMA PAGE REG I STER TEST
DESCRIPTION
ALL PAGE REGISTERS
.; - - --- - - WRITE/READ
- - - - - - - - - - - - - - - - - - -- - - -- - - - - - - - -CHECKPOINT 08
C22A:
C228:
MOV
OUT
SUB
"OV
MOV
OUT
INC
INC
CMP
"NZ
XCHG
DEC
DEC
SUB
IN
CMP
"NZ
DEC
DEC
CNP
"NZ
INC
"DV
LOOP
"DV
NOV
"DV
OUT
DO ALL DATA PATTERNS
AL
DX,8FH
C22A
AH,AL
TEST OMA PAGES 81
THROUGH 8EH
AH
SAVE CURRENT DATA PATTERN
CHECK LAST WR I TTEN
OX
AL.AL
AL.DX
AL,AH
C2.
DATA AS WRITTEN?
GO ERROR HALT IF NOT
CHANGE DATA 8EFORE READ
AH
OX
DX,MFG_PORT
C228
CONTINUE TILL PORT 80
AH
NEXT PATTERN TO RIPPLE
AL,AH
C22A
TEST LAST DMA PAGE REGISTER
C22:
<><><><><><><> <><><><><>
<><> CHECKPOINT 08 <><>
AL,08H
MFG_PORT ,AL
AL,AL
DX,DMA PAGE
CX,OFFH
OX,AL
OX
(USED FOR ADDRESS LINES DURING REFRESH)
AL,OCCH
OX ,LAST _DMA_PAGE
AH,AL
DX,AL
WR J TE AN CC TO PAGE REG I STERS
SAVE THE DATA PATTERN
OUTPUT PAGE REG I STER
VERIFY PAGE REGISTER 8F
SUB
IN
CMP
"NZ
CMP
"NZ
NOV
"MP
AL,AL
AL,DX
AL,AH
C2.
AH,OCCH
C25
AL,033H
C22
CHANGE DATA PATTERN BEFORE READ
GET THE DATA FROM PAGE REGISTER
GO IF ERROR
SET UP DATA PATTERN OF 33
DO DATA 33
COP
"Z
SUB
"MP
AH,O
C21
AL,AL
C22
CHECK DONE
GO IF YES
SET UP FOR DATA PATTERN 00
DO DATA 0
GO
IF ERROR
C25:
1----C26:
ERROR HALT
HLT
i-
~~ ~~ :~~-
;
;
;
;
HALT SYSTEM
-------------------------------
STORAGE REFRESH TEST
DESCRIPTION
I FY REFRESH I S OCCURR I NG
---- --- VER
-- --- - -- - --- - - - - -------- - - - - -- - -CHECKPOINT 09 -
TEST MEMORY REFRESH
<><><><><><><><><><><><>
<><> CHECKPO I NT 09 <><>
MOV
OUT
SUB
AL,09H
MFG _PORT, AL
CX,CX
IN
TEST
LOOPZ
JCXZ
AL,PORT B
AL '. REFRESH _ BIT
C28
C2.
I NSURE REFRESH I S OFF
ERROR HALT IF TIMEOUT
IN
TEST
LOOPNZ
JCXZ
AL,PORT_8
AL,REFRESH_BIT
C29
C26
ERROR HALT I F NO REFRESH 8 I T
C28:
INSURE REFRESH BIT IS TOGGLING
C29:
I NSURE REFRESH J S ON
TEST. 10
8042 INTERFACE TEST
READ CONFIGURATION JUMPERS
DESCRIPTION
I SSUE A SELF TEST TO THE 8042.
TEST 1 5-41
IBM Personal Computer MACRO Assembler
TEST 1 ---- 06/10/85
POWER ON SELF TEST
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
14:37
1438
1439
1440
1441
1442
144:3
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1414
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
151 1
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
Version 2.00
(POST)
1-15
06-10-85
INSURE A 55H IS RECEIVED.
READ MANUFACTURING AND DISPLAY
;
;----0339 BO OA
033B E6 80
CHECKPOINT OA
MOV
OUT
AL,OAH
MFG_PORT ,AL
SOFT RESET
0:330
0:33F
0341
0:343
0346
0348
0:34A
0340
034F
2B
E4
8A
F6
14
E4
F6
EO
74
0351
F4
C9
64
EO
C4 01
02
60
C4 02
FO
01
:
I
AND SAVE IN MFG_TEST.
--- --- - ,JUMPERS
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- --
SUB
TST! :
IN
MOV
TEST
"Z
IN
TST2:
TEST
LOOPNZ
"Z
ERROl
<><><><><><><><><><> <> <>
<><> CHECKPOINT
OA <><>
(HANDLE ALL POSS ISLE CONO I T IONS)
CX,CX
AL, ST ATUS PORT
AH,AL
AH, OUT aUF FULL
TST2
AL ,PORT A
AH, 1NFT-8UF FULL
TST I
TST4
HLT
100 MILL I SECONDS FOR TH I SLOOP
CHECK FOR I NPUT BUFFER FULL
CO IF NOT
FLUSH
I S THE OUTPUT BUFFER ALSO FULL?
TRY AGAIN
CaNT I NUE I F OK
HALT SYSTEM IF BUFFER FULL
I SSUE A RESET TO THE 8042
0:352 BO OB
0:354 E6 80
0:356
0:358
035B
0350
035F
0:361
0363
0366
0368
036A
BO
BC
EB
A8
74
E4
BC
EB
E4
3C
AA
03EE R
39
01
02
60
03FO R
3A
60
55
TST4:
MOV
OUT
MOV
MOV
TST4_B:
"MP
TEST
R
IN
TST4_A:
TST4_C:
MOV
"MP
IN
CMP
AL ,OBH
MFG_PORT ,AL
AL,SELF TEST
SP,OFFSET C8042A
SHORT C8042
AL ,OUT BUF FULL
TST4 AAL ,PORT A
SP, OFFSET OBF 42A
SHORT OBF 42 AL,PORT AAL,55H -
036C BO OC
036E E6 80
MOV
OUT
AL.OCH
MFC_PORT, AL
0370 75 OF
"NZ
ERRO
0372
0374
0377
0379
031C
037E
0380
MOV
MOV
<> <><><><><><><> <> <> <> <>
<><> CHECKPOINT 08 <><>
SELF TEST COMMAND
SET RETURN ADDRESS
I S THE OUTPUT BUFFER FULL?
GO IF NOT
FLUSH
SET RETURN ADDRESS
GO WA I T FOR BUFFER
GET THE END I NC RESPONSE
<> <><><><><> <> <> <> <> <> <>
<><> CHECKPOINT OC <><>
GO IF NOT OK
GET THE SW ITCH SETT I NGS
BO
BC
EB
BC
EB
E4
E6
CO
03F4 R
10
03F6 R
24
60
82
E30B:
"MP
MOV
"MP
E30C:
IN
OUT
AL, READ 8042 INPUT
SP ,OFFSET C8042C
SHORT C8042
SP, OFFSET OBF 42B
SHORT OBF 42 AL,PORT ADMA_PAGE+ I ,AL
READ I NPUT COMMAND
SET RETURN ADDRESS
I SSUE COMMAND
SET RETURN ADDRESS
GO WA I T FOR RESPONSE
eET THE SW ITCH
SAVE TEMPORARY
WR ITE BYTE 0 OF 8042 MEMORY
0382
0384
0387
0389
BO
BC
EB
74
60
03F2 R
00
05
038B
0380
038F
0390
0390
0392
0394
BO 00
E6 80
F4
BO 50
E6 60
EB 10
MOV
MOV
TST4_D:
MOV
OUT
HLT
TST4 01:
MOV
OUT
"MP
; ----0396 FA
0397 E6
0399
039B
0390
039F
03Al
2B
E4
A8
EO
C3
C8042:
C9
64
02
FA
C42
2B
8:3
E4
A8
75
E2
FE
75
C3
- I,
IN
TEST
LOOPNZ
RET
C9
06
64
01
06
F8
CB
F4
-----
OBF _ 42:
SUB
MOV
IN
TEST
"NZ
LOOP
OEC
"NZ
C42_31
;
AL,ODH
MFG_PORT ,AL
AL, SOH
PORT A, AL
SHORT E30A
WR I TE BYTE COMMAND
SET RETURN ADDRESS
I S SUE THE COMMAND
CaNT I NUE I F COMMAND ACCEPTED
<><><><><><> <> <> <><><><>
<><> CHECK PO I NT 00 <><>
ENABLE OUTPUT BUFFER FULL INTERRUPT,
DISABLE KEYBOARD, SET SYSTEM FLAe,
PC I COMPATIBILITY, INHIBIT OVERRIDE
STATUS_PORT ,AL
CX,CX
AL,STATUS PORT
AL, I NPT_BOF _FULL
C42 I
NO I NTERRUPTS ALLOWED
SEND COMMAND IN AL REG J STER
LOOP COUNT
WA I T FOR THE COMMAND ACCEPTED
-
WAIT FOR 8042 RESPONSE
C42 2,
-
AL, WR I TE 8042 LaC
SP,OFFSET C8042B
SHORT C8042
TST4_DI
I SSUE THE COMMAND TO THE 8042
CLI
OUT
SUB
;
03A2
03A4
03A6
03A8
03AA
03AC
03AE
03BO
03S2
"MP
,JZ
RET
CX,CX
BL,6
AL, STATUS PORT
AL. OUT _BUF_FULL
200MS/PER LOOp· 6
CHECK FOR RESPONSE
--
GO I F RESPONSE
TRY AGAIN
DECREMENT LOOF COUNT
-
RETURN TO CALLER
C42 3
C42 2
BL
C42 2
=1200 MS +
- ---------------------------------- -----
; TEST. I 1
;
BASE 64K READ/WRITE MEMORY TEST
; OESCR I PTI ON
:
:
WRITE/READ/VERIFY DATA PATTERNS I
;
AA,55,FF,OI, AND 00 TO 1ST 64K :
;
OF STORAGE. VER I FY STORAGE
ADDRESSABILITY.
;
; - - -- - - - -- - ---- -- - - - - - - - -- ---
- - -- -- --- -
0383 80 OE
03B5 E6 80
03B7
038A
03BC
03CO
03C 1
03C4
5-42
88
8E
88
FC
B9
28
---- R
08
IE 0072 R
8000
FF
TESTl
;-----
FILL MEMORY WITH DATA
E30A:
MOV
OUT
MOV
MOV
MOV
CLO
MOV
SUB
AL,OEH
MFG_PORT ,AL
AX,DATA
DS,AX
BX • 'PRESET_FLAG
CX,2000H*4
OJ ,01
<><><><><><><><><> <><> <>
<><> CHECKPO I NT
OE <><>
GET THE SYSTEM SEGMENT
OF· DATA
SAVE 'PRESET FLAC IN BX
SET 0 I RECT ION FLAG TO INCREMENT
SET FOR 32K WORDS
FIRST 16K
IBM Personal Computer MACRO Assembler
TESTI ---- Ob/l0/85
POWER ON SELF TEST
1541 03Cb 2B Fb
1542 03C8 2B CO
1543 03CA 8E 08
1544 03CC 8E CO
1545 03CE 81 FB 1234
154b 0302 15 03
1541 0304 E9 0582 R
1548
1549
1550
1551 0301 BO OF
1552 0309 Eb 80
1553
1554 03DB 80 80
1555 0300 Eb 81
1556 03DF BC 03EC R
1551 03E2 E9 0000 E
1558 03E5 8B 08
1559 03E1 15 OF
1560 03E9 E9 0580 R
15bl
1562
1563
15b4 03EC 03E5 R
r 5b5 03EE 0350 R
156b 03FO 03b8 R
1561 03F2 0389 R
r 5b8 03F4 0319 R
15b9 03Fb 037E R
1510
1511
1512
1513
1514
1515
151b
1511
1518
1519
1580
1581
1582 03F8
1583 03F8 8A C1
1584 03FA Eb 81
1585 03FC 8A C3
158b 03FE Eb 82
1581
1588
1589
1590 0400 B9 COOO
1591 0403 8E 09
1592 0405 2B DB
1593 0407 8B 07
1594 0409 E8 00
1595 040B 3D AA55
1596 040E bA 00
1597 0410 14 OC
1598 0412 81 Cl 0080
1599 041b 81 F9 C800
1600 041A 7C E7
lbOl 041C 23 C9
lb02 041E
lb03 041E 75 03
1b04 0420 E9 050F R
lb05
lb06
1607
1608
1 b09
1610
1611
1612
1613
1614
1615 0423 BA 0308
1616 0426 2A CO
1617 0428 EE
1618
1619 0429 BA 0388
1620 042C BO 01
1621 042E EE
1622 042F 83 EA 04
1623
1624 = 0010
1625
1626 0432 BB 0030 E
1627
16280435 B9 0010
1629
1630
1631
1632 0438 32 E4
1633
1634
1635
1636 043A 8A C4
1637 043C EE
1638 0430 42
1639 043E FE C4
1640 0440 2E: SA 07
1641 0443 EE
1642 0444 43
1643 0445 4A
1644 0446 E2 F2
1645 0448 8A E2
1646 044A 80 E4 FO
1641 044D 80 FC DO
1648 0450 74 08
1649 0452 BB 0000 E
1650 0455 BA 0304
1651 0458 EB DB
1652
1653
1654
1-16
06-10-85
Version 2.00
(POST)
SUB
SUB
MOV
MOV
CMP
JNZ
JMP
S I, S I
AX,AX
DS,AX
ES,AX
BX,1234H
E30A 0
CLR_STG
;
;
;-----
GET THE
INPUT BUFFER
E30A
MOV
OUT
AL,OFH
MFG_PORT, AL
MOV
OUT
MOV
JMP
MOV
JNZ
JMP
AL,PARITY_CHECK
DMA_PAGE+6.AL
SP,OFFSET C2
STGTST_CNT
BX,AX
C31
C33
-
"
C30:
WARM START?
GO IF NOT
(SWITCH SETTINGSI
<><><><><><><> <><><><><>
<><> CHECKPO I NT OF <><>
SET BASE MEMORY PAR I TY
USE AS TEMPORARY SAVE
SET RETURN ADDRESS
SAVE FAILING BIT PATTERN
STORAGE OK. CaNT I NUE
TEMPORARY STACK FOR POST ROUTINES
C2
C8042A
OBF 42A
C8042a
C8042C
OBF _ 42B
OW
OW
OW
OW
OW
OW
C30
TST4 B
TST4-C
TST4-0
E30BE30C
.-- - - - - - - - - - - - --- - - - - --- - - - - - - - - - - - - - - - - -;
BASE 64K STORAGE FAILURE
0 I SPLAY THE CHECKPO I NT (MFG CHECKPO I NT I
AND XOR EXPECTED WITH READ IN MFG PORT
DISPLAY CHECKPOINT IN MFG PORT+3
DISPLAY XOR'D DATA HIGH BYTE MFG PDRT+I
LOW BYTE IN MFG PDRT+2
A READ/WRITE SCOPE LOOP OF THE FIRST
WORD FOR POSSIBLE ADDRESS LINE FAILURES
;
;
;
;
;
;
;
C31:
MOV
OUT
MOV
OUT
SAVE HIGH BYTE
AL,BH
MFG PORT+ 1, AL
AL,BL
MFG_PORT+2,AL
SAVE LOW BYTE
CHECK FOR V IDEO ROM
MI:
MOV
MOV
SUB
MOV
JMP
CMP
POP
JZ
AOO
CMP
JL
ANa
CX,OCOOOH
DS,CX
BX,BX
AX, [BX}
S·2
AX ,OAA55H
START OF I/O ROM
POINT TO SEGMENT
GET THE FIRST 2 LOCATIONS
Z5
CX,080H
CX,oe800H
MI
CX,CX
GO IF YES
PO I NT TO NEXT 2K 8LOCK
TOP OF VIDEO ROM AREA YET?
TRY AGAIN
SET NON ZERO FLAG
JNZ
JMP
C32
C31 0
GO IF NOT
BUS SETTLE
I S THE V IDEO ROM PRESENT?
Z5:
BYPASS ERROR DISPLAY
- ;~~ - ~ ~ ~~~ - ~~~~ - ~~ - ~ ~ ;~~~ ~ - ~~~~~~ - ~~~~~ --- -- - - - ---- - - --
IF VIDEO ROM
;
THIS ROUTINE INITIALIZES THE ATTACHMENT TO
,
TO 0 I SPLAY FIRST 64K STORAGE ERRORS.
; BOTH COLOR AND MONOCHROME ATTACHMENTS ARE INITIALIZED.
;
- -- - ---- - - - - ---- - - - - -- -- - - - --- - - - - -- - - - --- - --- --- - - - ---
;-----
I NIT I AL I ZE COLOR / MONOCHROME
C32:
MOV
SUB
OUT
OX ,3D8H
AL,AL
DX,AL
CONTROL REGISTER ADDRESS OF COLOR CARD
MODE SET
MOV
MOV
OUT
SUB
DX,03B8H
AL, I
DX,AL
DX,4
CONTROL REGISTER ADDRESS OF
MODE SET FOR CARD
RESET V IDEO
BACK TO BASE REG I STER
10H
MOV
ASSUME
MOV
eX,OFFSET VIDEO PARMS+M4-3
; POINT TO VIDEO PARAMETERS
DS:CODE
CX,M4
; COUNT OF MONOCHROME V IDEO PARAMETERS
XOR
MOV
OUT
INC
INC
MOV
OUT
INC
OEC
LOOP
MOV
ANa
CMP
JZ
MOV
MOV
JMP
INITIALIZATION TABLE
AH,AH
LOOP THROUGH TABLE,
; -----
CARD
EOU
BX POINTS TO CORRECT ROW OF
Ml 0:
a/w
I AH
J S REG I STER NUMBER OUR I NG LOOP
OUTPUTTING REGISTER ADDRESS,
THEN VALUE FROM TABLE
AL,AH
DX,AL
GET b845 REG I STER NUMBER
OX
POINT TO DATA PORT
NEXT REGISTER VALUE
GET T ABLE VALUE
OUT TO CHIP
NEXT IN TABLE
BACK TO POINTER REGI STER
DO THE WHOLE TABLE
CHECK I F COLOR CARD DONE
STRIP UNWANTED BITS
I SIT THE COLOR CARD?
CaNT J NUE I F COLOR
POINT TO VIDEO PARAMETERS
COLOR BASE
CONTINUE
AH
AL,CS: [BX}
DX,AL
BX
ox
MIO
AH,DL
AH,OFOH
AH,ODOH
Z 3
BX,OFFSET VIDEO PARMS
DX,3D4H
Z_2
FILL REGEN AREA WITH BLANK
TESTt
5-43
IBM Personal Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF' TEST
1655
1656
1657
1658
1659
1660
1661
16&2
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1 &80
1681
1682
1683
1684
1685
1686
1&87
1666
1689
1690
1691
169Z
1693
1694
1695
1696
1697
1698
1699
1700
1701
170Z
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1711
1718
1119
17Z0
17Z1
1722
1723
17Z4
1725
1126
1727
1728
1729
1730
1731
1132
1733
1734
1135
1736
1737
1138
1739
1740
1741
174Z
1743
1744
1745
1746
1747
1748
1749
1750
1151
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
045A 33 F'F'
045C 88 8000
045F' 8E CO
Z_31
Version 2.00
(POST)
1-17
06-' 0-85
XOR
MOV
MOV
01,01
AX,OBOOOH
ES,AX
SET UP PO I NTER FOR REGEN
SET UP ES TO VIDEO REGEN
0461 89 0800
0464 88 0720
0467 F'3/ A8
MOV
MOV
REP
CX, Z048
AX, • '+7·H
STOSW
NUMBER OF WORDS I N MONOCHROME CARD
FILL CHARACTER FOR ALPHA + ATTRIBUTE
FILL THE REGEN BUFFER WITH BLANKS
0469
0468
046E
0470
0473
XOR
MOV
MOV
MOV
REP
01,01
BX,OB800H
ES,BX
CX,S192
STOSW
CLEAR COLOR V IDEO BUFFER MEMORY
SET UP ES TO COLOR VIDEO MEMORY
33 F'F'
88 8800
8E C3
89 2000
F'3/ A8
;
-----
0475 8A 0388
0478 BO 29
047A EE
MOV
MOV
OUT
;
-----
0478 42
047C BO 30
047E EE
;
-----
OX,3BSH
AL,29H
OX,AL
SET V IDEO ENABLE PORT
SET UP OVERSCAN REG I STER
INC
MOV
OUT
047F' BA 0308
0482 BO 28
0484 EE
FILL WITH BLANKS
ENABLE V IDEO AND CORRECT PORT SETT I NG
OX
AL,30H
OX,AL
SET OVERSCAN PORT TO A DEFAULT
VALUE 30H FOR ALL MODES EXCEPT 640X200
OUTPUT THE CORRECT VALUE TO 309 PORT
ENABLE COLOR V IDEO AND CORRECT PORT SETTI NG
MOV
MOV
OUT
OX,30SH
AL,28H
OX,AL
SET V IDEO ENABLE PORT
SET UP OVERSCAN REGI STER
0465 42
0466 BO 30
0488 EE
INC
MOV
OUT
; -----
OX
AL ,30H
OX,AL
DISPLAY FAILING CHECKPOINT AND
0489 8C C8
048B 8E DO
MOV
MOV
AX,CS
SS ,AX
0480 8B BOOO
0490 8E 08
MOV
MOV
BX ,OBOOOH
OS,BX
0492
0494
0497
0499
049B
049C
0490
30
0006
FF
05
MOV
MOV
SUB
MOV
INC
INC
AL, '0'
CX,6
01,01
[01] ,AL
01
01
FA
BO
89
28
88
47
47
EZ
SET OVERSCAN PORT TO A DEFAULT
VALUE 30H FOR ALL, MODES EXCEPT 640X200
OUTPUT THE CORRECT VALUE TO 309 PORT
SET STACK SEGMENT TO CODE SEGMENT
SET OS TO B/W DISPLAY BUFFER
DISPLAY BANK 000000
START AT 0
WR I TE TO 0 I SPLA '( REGEN BUFFER
POINT TO NEXT POSITION
LOOP
Z
049F 80 FF 88
04AZ 74 OC
04A4 ZB FF
CMP
JZ
SUB
BH,OB8H
oT.ol
POINT TO START OF BUFFER
04A6
04A8
04AA
04AC
04AE
MOV
MOV
MOV
MOV
JMP
BH,OBOH
ES,BX
BH,OBSH
OS,BX
ES = MONOCHROME
SET SEGMENT TO COLOR
OS
COLOR
87
8E
B7
8E
E8
80
C3
B8
DB
E2
;----048080 ZO
04B2 88 05
0484 26: 88 05
04B7 47
04B8 47
0489 E4 81
04B8 81 04
0480 02 E8
048F BC 057A R
04C2 EB 18
04C4
04C6
04C8
04C8
04CO
04CF
0401
0403
0406
0408
040A
040C
E4
24
BC
E8
E4
Bl
DZ
BC
EB
E4
24
BC
81
OF
057C R
12
82
04
E8
057E R
01
82
OF
0580 R
ZI:
Z2:
Z3,
;----04DF
04El
04E2
04E4
04 90
27
1440
27
04E5
04E7
04EA
04EB
04EC
88 05
26: 88 05
47
47
C3
04ED
04EF
04F'
04F4
04F5
0-4F6
04F8
04FA
04Fo
BO ZO
88 05
Z6: 88 05
47
47
BO 32
88 05
Z6: 88 05
47
PR:
Z
5-44
TEST 1
=
Z_O
PRINT FAILING BIT PATTERN
MOV
MOV
MOV
INC
INC
IN
MOV
SHR
MOV
JMP
(01] ,AL
ES: (01] ,AL
01
01
AL,MFG_PORT+ 1
CL.4
AL,CL
SP "OFFSET Z 1_0
SHORT PR
IN
ANa
MOV
JMP
IN
MOV
SHR
MOV
JMP
IN
ANa
MOV
AL,MFG_PORT+ 1
AL,OFH
SP, OFFSET Z2 0
SHORT PR
AL, MFG_PORT +2
CL,4
AL,CL
SP,OFFSET Z3_0
SHORT PR
AL,MFG_PORT+2
AL,OFH
SP,OFFSET Z4_0
AL,
01 SPLAY A BLANK
WR I TE TO COLOR BUFFER
WR I TE TO MONOCHROME REGEN BUFFER
PO I NT TO NEXT POS I Ti ON
GET THE HIGH BYTE OF FAILING PATTERN
SHIFT COUNT
NIBBLE SWAP
ISOLATE TO LOW NIBBLE
GET THE HIGH BYTE OF FAILING PATTERN
SHIFT COUNT
NIBBLE SWAP
ISOLATE TO LOW NIB8LE
RETURN TO Z4:
CONVERT AND PR I NT
AOO
OAA
AOC
OAA
AL,090H
MOV
MOV
INC
INC
RET
[01] .AL
ES:[OIJ,AL
01
01
AL,040H
01 SPLA Y 20 I
Z4;
CHECK THAT COLOR BUFFER WR I TTEN
I
MOV
MOV
MOV
INC
INC
MOV
MOV
MOV
INC
CONVERT OO-OF TO ASCI I CHARACTER
ADD FIRST CONVERSION FACTOR
ADJUST FOR NUMERIC AND AL:.PHA RANGE
ADD CONVERS I ON AND ADJUST LOW N 18BLE
ADJUST HIGH NIBBLE TO ASCII RANGE
WR I TE TO COLOR BUFFER
WR I TE TO MONOCHROME BUFFER
POINT TO NEXT POSITION
ERROR
AL,' •
[01 J ,AL
ES:[OI],AL
01
01
AL, '2'
(OIJ.AL
ES: (01] ,AL
01
DISPLAY A BLANK
WRITE TO DISPLAY REGEN BUFFER
WR I TE TO MONOCHROME BUFFER
PO I NT TO NEXT POS I TI ON
D I SPLAY 20 I ERROR
WR I TE TO D I SPLA Y REGEN BUFFER
WR I TE TO MONOCHROME BUFFER
POINT TO NEXT POSITION
IBM Perso.,:!l Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
1769 04FE 47
1710 04FF 80 30
1771 0501 88 05
1712 0503 26: 88 05
1773 0506 47
1774 0507 47
17750508 BO 31
1776 050,.1, 88 05
1777 050C 26: 8805
1778
1779
1780
1781 050F BO DD
1782 051 I E6 80
17830513 E6 83
17840515 2B C9
17850517
1786
1787 0517 2B CO
17880519 8E 08
1789 051B 88 ,.1,,.1,55
1790 051E 28 FF
1791 0520 89 05
1792 0522 88 05
1793 0524 E2 F I
1794 0526
1795 0526 89 05
1796 0528 88 05
1797 052,.1, E2 FA
1798 052C
1799 052C 89 05
1800 052E 88 05
1801 0530 E2 FA
1802 0532
1803 0532 89 05
1804 0534 88 05
1805 0536 E2 FA
1806 0538
1807 0538 89 05
1808 053A 88 05
1809 053C E2 FA
1810
1811
1812
1813 053E E4 81
1814 0540 E6 80
1815 0542
1816 0542 B8 AA55
1817 0545 89 05
1818 0547 88 05
1819 0549 E2 F7
1820 0548
1821 054B 89 05
1822 054D 88 05
1823 054F E2 FA
1824 0551
1825 0551 89 05
1826 0553 8B 05
1827 0555 E2 FA
1828
1829
1830
1831 0557 E4 82
1832 0559 E6 80
1833 055B B8 AA55
1834 055E 2B FF
1835 0560 89 05
1836 0562 8B 05
1837 0564 E2 F8
1838 0566
1839 0566 89 05
1840 0568 8B 05
1841 056A E2 FA
1842 056C
1843 056C 89 05
1844 056E 88 05
1845 0570 E2 FA
1846 0572
1847 0572 89 05
1848 0574 88 05
1849 0576 E2 FA
1850 0578 E8 95
1851
1852 057,.1, 04C4 R
1853 057C 04CO R
1854 057E 04D8 R
1855 0580 04EO R
1856
1857
1858
1859
1860
1861 0582
1862
18(:,3 0582 F3/ AB
1864 0584 88 ---- R
1865 0587 8E 08
1866 0589 89 IE 0072 R
1867
1868
1869
1870 058D
1871 058D 88 ---- R
1872 0590 8E D8
1873 0592 BC 0000
1874 0595 8E D4
1875 0597 8C 8000
1876
1811
1878
1879 059A C6 06 0084 R
1880
1881059FBOIl
1882 05Al E6 80
INC
MOV
MOV
MOV
INC
INC
MOV
MOV
MOV
01
AL, '0'
[Oll,AL
ES:[Dll,AL
01
01
AL, '1'
(01] ,AL
ES:[Dl),AL
ROLL ERROR CODE
C31
C31
- 0,
AL,OOaH
MFG_PORT, AL
MFG PORT +3, AL
SUB
MOV
MOV
SUB
MOV
MOV
AX,AX
DS,AX
AX,OAA55H
DI,DI
[DI] ,AX
AX, [01]
C31 A
- B,
MOV
MOV
-C,
MOV
MOV
LOOP
C31
- 0,
MOV
MOV
LOOP
MOV
MOV
LOOP
j-----
IN
-G,
MOV
MOV
MOV
LOOP
C31
- H,
C31
- I,
MOV
MOV
LOOP
MOV
MOV
LOOP
;-----
- K,
OUT
MOV
SUB
MOV
MOV
LOOP
- L,
MOV
MOV
LOOP
C31
- M,
MOV
MOV
LOOP
C31
- N,
MOV
MOV
LOOP
JMP
ZI
Z2
Z3
Z'
FIRST THE CHECKPOINT
<><><><><> <> <><> <><><><>
<><> CHECK PO I NT aD <><>
ALSO DISPLAY CHECK POINT IN PORT 83
- 00
-- 00
; -----
OW
OW
ow
ow
READ THE FIRST WORD
0] SPLAY CHECKPO I NT LONGER
AX, [0] 1
C31 B
-
[Oll,AX
AX, [011
C31 C
-
[OI],AX
AX, [DI]
C31 0
-
[DI],AX
AX, [D11
C31 E
-
IN MFG_PORT --> NEXT THE HIGH BYTE
AL,MFG_PORT+ I
MFG _PORT, AL
XOR OF FAILING BIT PATTERN
HIGH BYTE
AX,OAA55H
(Dll,AX
AX, [01]
C31 G
WR I TE AN AA55
READ THE FIRST WORD
-
[OI],AX
AX, [DI]
C31 H
-
[OI],AX
AX, [D]]
C31 I
-
]N MFG_PORT
AL,MFG_PORT+2
MFG_PORT ,AL
AX ,OAA55H
OI,D]
{Ol] ,AX
AX. [01]
C31 K
-->
THEN THE LOW BYTE
LOW BYTE
WR I TE AN AA55
;
READ THE FIRST WORD
-
[011.AX
AX,[OI]
C31 L
-
[01] ,AX
AX, (01]
C31 M
-
[0]] ,AX
AX, (01]
C31 N
C31 0
-
ZI
'2
Z3
Z4
DO AGAIN
TEMPORARY
TEMPORARY
TEMPORARY
TEMPORARY
STACK
STACK
STACK
STACK
CLEAR STORAGE ENTRY
CLR STG:
ASSUME
REP
MOV
MOV
MOV
j-----
SETUP SEGMENT
WR I TE AN AA55
-
ROLL ERROR CODE
IN
C31
-->
[0]] ,AX
ROLL ERROR CODE
OUT
C31
WRITE TO DISPLAY RECiEN BUFFER
WR I TE TO MONOCHROME BUFFER
cX,Ex
C31 _E:
C31
WRITE TO DISPLAY REGEN BUFFER
WR I TE TO MONOCHROME BUFFER
PO I NT TO NEXT POS I TI ON
-A,
LOOP
C31
IN MFG_PORT
MOV
OUT
OUT
SUB
LOOP
C31
1-18
06-( 0-85
Versio., 2.00
(POST)
OS:OATA
STOSW
AX,OATA
OS,AX
(IRE SET _FLAG, BX
STORE 32K ¥lORDS OF 0000
RESTORE DATA SEGMENT
RESTORE RESET FLAG
SETUP STACK SEGMENT AND SP
C33:
MOV
MOV
MOV
MOV
MOV
AX,OATA
OS,AX
SP,POST SS
SS, SP
SP,POST_SP
SET DATA SEGMENT
GET STACK VALUE
SET THE STACK UP
ST ACK I S READY TO GO
] N I TI ALI ZE 0] SPLA Y ROW COUNT
18
MOV
oltROWS,25-1
MOV
OUT
AL,IIH
MFG_PORT ,AL
SET ROWS FOR PRINT SCREEN DEFAULT
<><><><><><><> <><><><><>
<> <> CHECKPO I NT
1 1 <> <>
TESTl
5-45
IBM Personal Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
1883
1684
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1696
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
191 I
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1936
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
,958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1966
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
Version 2.00
(POST)
1-19
06- I 0-85
VERIFY SPEED/REFRESH CLOCK RATES
05A3
05A5
05A7
05A8
05A6
05AA
05AC
05AE
05AE
05BO
0582
32 08
33 C9
90
(ERROR
=
1 LONG AND
1 SHORT BEEP)
8L,BL
CX,CX
; CLEAR REFRESH CYCLE REPEAT COUNT
; INITIALIZE SPEED RATE REGISTER
; PLACE ON EVEN WORD BOUNDARY
IN
TEST
LOOPZ
AL.PORT 8
AL,REFRESH BIT
C34
-
;
;
IN
AL,PORT B
AL,REFRESH 81T
C35
-
READ REFRESH BIT REG I STER
MASK FOR BIT
DECREMENT LOOP COUNTER TILL OFF
DECREMENT REFRESH CYCLE REPEAT COUNT
REPEAT TILL CYCLE COUNT DONE
XOR
XOR
EVEN
C34:
E4 61
A8 10
El FA
READ REFRESH BIT REGISTER
MASK FOR 81T
DECREMENT LOOP COUNTER TILL ON
C35:
E4 61
A8 10
EO FA
TEST
LOOPNZ
0584 FE CB
05B6 75 FO
OEC
JNZ
BL
05B8
05BC
05BE
058E
05C 1
05C4
05C5
05C5
05C9
CMP
JAE
CX ,RATE UPPER
C36
-
CHECK FOR RATE BELOW UPPER LIMIT
SKIP ERROR 8EEP IF BELOW MAXIMUM
MOV
DX,0101H
ERR_BEEP
GET BEEP COUNTS FOR REFRESH ERROR
CALL TO POST ERROR BEEP ROUT I NES
HALT SYSTEM - BAD REFRESH RATE
osce
OSCO
05CF
0502
0504
81 F9 F8A7
73 07
C3.
C36E:
8A 0101
E8 0000 E
F4
CALL
HLT
C36;
81
F9 F9FO
77 F3
E4
24
A2
2A
E6
82
F8
0012 R
CO
82
CMP
JA
CX .RATE LOWER
C36E
-
GET THE
INPUT BUFFER
CHECK FOR RATE ABOVE LOWER LIMIT
GO TO ERROR BEEP IF 8ELOW M J N I MUM
(SWITCH SETTINGS)
IN
ANa
MOV
STRIP SITS
SUB
OUT
;
;
;
;
I
;
---- --- - - - -- -- -- - - -- ------ - -- - --- -----TEST.llA
VERIFY 286 LGOT/SGOT LlOT/SIDT
I NSTRUCTI ONS
DESCRIPTION
LOAD GOT AND lOT REGISTERS WITH
AA,55,OO AND VERIFY CORRECT.
-------- - --- -- - -- - - - - - - - - - - - ---- --- --- --:
;----0506 OF 01 EO
0509 A9 OOOF
050C 75 34
VERIFY STATUS
INDICATE COMPATIBILITY
{REAL~
MODE
SMSW
AX
GET THE CURRENT STATUS WORD
OB
OOFH,OOIH,OEOH
AX,OFH
ERR_PROT
PE/MP/EM/TS BITS SHOULD BE ZERO
GO IF STATUS NOT REAL MODE
TEST
JNZ
TEST PROTECTED MODE REG I STERS
050E BO 12
05EO E6 80
MOV
OUT
05E2
05E3
05E4
05E7
05EA
05EO
05FO
05F3
05F6
05F8
IE
07
SF
89
B8
E8
88
E8
28
E8
PUSH
05F8
05FC
05FO
05FE
0601
0603
0606
0608
0609
060A
0608
060E
FO
9C
56
A9
75
A9
74
FC
9C
58
A9
75
POP
MOV
MOV
MOV
OOAO
0003
AAAA
0615 R
5555
0615 R
CO
0615 R
CALL
MOV
CALL
SUB
CALL
I -----
; USE TH I S AREA TO BU I LO TEST PATTERN
FIRST PATTERN
WRITE NEXT PATTERN
WRITE 0
TEST 286 CONTROL FLAGS
;
;
PDP
AX
TEST
AX,0200H
ERR PROT
AX,0400H
ERR_PROT
JNZ
TEST
JZ
CLO
POP
AX
TEST
JNZ
AX,0400H
ERR_PROT
JMP
SHORT C37A
MOV
OB
OF
+ 110001
+
+ 110002
[BP]
OOFH
BYTE
BX,WORD PTR [BP]
BYTE
OFFSET CS: 110001
001H
OFFSET CS; 110002
BP,SYS lOT LOC
ES
026H
[BP]
OOFH
BYTE
OX,WORD PTR [81"]
BYTE
OFFSET CS: 110004
OOIH
OFFSET csn10005
LABEL
MOV
LABEL
ORG
OB
ORG
MOV
SEGOV
DB
LGOT
TESTl
OB
110004
LABEL
MOV
110005
LABEL
ORG
OB
ORG
;
STORE 6 BYTES OF PATTERN
;
LOAD THE
;
REGI STER FROM THI S AREA
;
LOAD THE GOT
;
FROM THE SAME AREA
lOT
026H
OB
01
0625 26
CX,3
STOSW
~~,SYS_IOT_LOC
LIDT
BD DOAO
0626 OF
0627
0627 8B 56 00
062A
0627
0627 01
062A
TEST OK CONTINUE
WRITE TO 286 REGISTERS
WRT PAT;MOV
REP
0610 26
GO IF NOT
PROTECTED MODE REGISTER FAILURE
I NSURE NO BREAKOUT OF HALT
JMP
SEGOV
88 5E 00
I
ERR PROT I
HLT
1-----
SET 0 I RECT I ON FLAG FOR DECREMENT
GET THE FLAGS
I NTERRUPT FLAG SHOULD 8E OFF
GO IF NOT
CHECK DIRECTION FLAG
GO IF NOT SET
CLEAR 0 I RECT I ON FLAG
INSURE DIRECTION FLAG IS RESET
PUSHF
0400
02
0615 89 0003
0618 F3/ A8
061A BO DOAO
5-46
SET ES TO SAME SEGMENT AS OS
ES
STO
0610 E8 3D
0612
0612 F4
0613 EB FO
061E
061F
061F
0622
061F
061F
0622
0622
as
DI,SYS IOT_LOC
CX,3
AX,OAAAAH
WRT PAT
AX,05555H
WRT PAT
AX.AX
WRT _PAT
PUSHF
0200
OF
0400
OA
<><><><><><><><> <><><><>
<><> CHECKPOINT 12 <><>
AL,12H
MFG_PORT, AL
IBM Perllonal Computer MACRO AlIlIembler
TESTI ---- 06/10/65
POWER ON SELF TEST
1997
1996
1999
2000 062A
2001
2002 0620
2003
2004 062E
2005 062F
2006 062F
2007 0632
2008 062F
2009 062F
2010 0632
201 I 0632
2012
2013 0635
2014
2015 0636
2016 0631
20170637
2018 063A
2019 0637
2020 0637
2021 063A
2022 063A
2023 0630
2024 063F
2025 0642
2026 0645
2027 0648
2028 064A
2029 0648
2030 064C
2031 064E
2032
2033
2034
2035
2036
2037 064F
2038 064F
2039 0651
2040 0653
2041 0655
2042 0651
2043 0659
2044 0658
2045 0650
2046
2047 065F
2048 0661
2049 0663
2050 0665
2051 0667
2052 0669
2053 066B
2054 0660
2055
2056
2051
2058
2059
2060 066F
2061 0671
2062
2063 0673
2064 0675
2065 0677
2066 0679
2067 067B
2068 0670
2069 067F
2070 0681
2071 0683
2012 0685
2013 0687
2014 0669
2075 068B
2016 0680
2017
2078
2019
2080 068F
2081 0691
2082
2083 0693
2084 0696
2085 0696
2086 069A
2081 069D
2088 069E
2089 06AO
2090 06A I
2091
2092
2093
2094 06A3
2095 06A5
2096
2097
2098 06A 7
2099 06AA
2100 06AB
2101 06AC
2102 06AE
2103 06Bl
2104
2105 06B4
2106 0685
2107 06B6
2108 0687
2109
2110
;----BO 08AO
26
OF
n0007
88 4E 00
110006
0 I
BD D6A5
26
OF
nOOOA
034600
11000B
0I
BF DOAO
8B 05
89 0005
BE D8AO
26: 38 04
75 C8
46
46
E2 F7
C3
C37B:
;
1-20
06-10-a5
VerlllOn 2.00
(POST)
READ AND VERIFY 286 REGISTERS
MOV
SEGOV
DB
SlOT
DB
LA8EL
MOV
LABEL
ORG
DB
ORG
MOV
SEGOV
DB
SGOT
DB
LABEL
ADD
LABEL
DRG
DB
ORG
MDV
MDV
MOV
MOV
CMP
JNZ
BP,GDT LOC
E5
026H
[BP]
OOFH
8YTE
CX, [8P)
INC
INC
51 51
LOOP
RET
C37B
;
STORE THE REG I STERS HERE
; GET THE
IDT REGI STERS
BYTE
OFFSET CS: 110007
OOIH
OFFSET CS: 710008
BP,GDT LOC+5
E5
026H
[BP)
OOFH
BYTE
AX, [BP]
GET THE GOT REG I STERS
BYTE
OFFSET CS: ?1000A
OOIH
OFFSET CS: 11000B
ol,SYS lOT LOC
AX, [OIT
CX,5
S I ,GOT LOC
AX.ES:Tsl}
ERR PROT
GET THE PATTERN WR I TTEN
CHECK ALL REG I STERS
POINT TO THE BEGINNING
HALT I F ERROR
PO I NT TO NEXT WORD
CONT I NUE TILL DONE
- - - - - - - ----- -- - -- - - --- - - - - - -- --- - - - -- - - - ---- - - ----- - - ---
;
INITIALIZE THE 8259
INTERRUPT #1
CONTROLLER CHIP:
~;;~;----------------------------------------------------
2A
E6
BO
E6
E8
80
E6
EB
CO
Fl
I I
20
00
08
21
00
SUB
OUT
MOV
OUT
JMP
MOV
OUT
JMP
BO
E6
EB
BO
E6
EB
BO
E6
04
21
00
01
21
00
FF
21
MOV
OUT
JMP
MOV
OUT
JMP
MOV
OUT
;
;
;
AL,AL
X287+I,AL
AL,IIH
INTAOO.AL
'.2
'.2
'.2
'.2
ICWI
EDGE. MASTER,
SETUP ICW2 -
AL,a
INTAOI.AL
ICW4
I NTERRUPT TYPE a
(8-F)
110 DELAY
AL,04H
INTAOI,AL
I
AL,OIH
INTAOI,AL
SETUP I CW3 -
MASTER LEVEL 2
110 DELAY
SETUP ICW4 -
MASTER,8066 MODE
110 DELAY
MASK ALL I NTERRUPTS OFF
(V IDEO ROUT I NE ENA8LES INTERRUPTS)
AL,OFFH
INTAOI,AL
- - -- --- ------- - ------- ------ - - ---------- - -- ---- - - - ------THE 6259 INTERRUPT #2 CONTROLLER CHIP
:
-- - - - - - --INITIALIZE
------ --- - --- -- - - - - ----- - - - - -- - - - -- - - - - --- - - - - -MOV
OUT
AL,I3H
MFG_PORT ,AL
BO
E6
EB
BO
E6
BO
EB
E6
E8
BO
E6
EB
BO
E6
MOV
OUT
JMP
MOV
OUT
MOV
JMP
OUT
JMP
MOV
OUT
JMP
MOV
OUT
AL,IIH
INTBOO,AL
II
AD
00
70
AI
02
00
AI
00
01
AI
00
FF
AI
;-----
AL,OFFH
INTBOI,AL
SET UP THE
CX,76H
SLAVE ICW4
INTERRUPT TYPE 70
SETUP ICW3 -
SLAVE LEVEL 2
I/O DELAY
SETUP JCW4 -
6066 MODE,
( 70-7F)
SLAVE
I NTERRUPTS OFF
MASK ALL
INTERRUPT
<><> <><><><><><><><><><>
<><> CHECKPOINT
14 <><>
FILL ALL INTERRUPT LOCAT IONS
FIRST INTERRUPT LOCATION
SET (ES) ALSO
GET ADDRESS OF I NTERRUPT OFFSET
PLACE I N I NTERRUPT VECTOR LOCAT I ON
GET THE CURRENT CODE SEGMENT
PLACE CODE SEGMENT I N VECTOR LOCAT I ON
01,01
ES,DI
AX,OFFSET OIl
AX,CS
03
ESTABLISH BIOS SUBROUTiNE CALL
INTERRUPT VECTORS
BO 15
E6 80
MOV
OUT
AL.15H
MFG_PORT ,AL
BF 0040 R
OE
IF
8C D8
8E 0010 E
B90010
MOV
PUSH
POP
MOV
MOV
MOV
01 ,OFFSET ~VIDEO INT
CS
OS
AX,DS
•
SI,OFFSET VECTOR TABLE+16
CX,I6
-
MOVSW
INC
INC
LOOP
DI
01
D3A
03A:
EDGE,
INTERRUPT VECTORS TO TEMPORARY
AL,14H
MFG_PORT, AL
;-----
-
110 DELAY
MOV
OUT
C8
ICWI
110 DELAY
SETUP JCW2 -
INTBO' ,AL
AL,OIH
INTBOI,AL
MDV
SUB
MOV
MOV
STOSW
MOV
STOSW
LOOP
Fl
I
'.2
'.2
'.2
'.2
B9
2B
8E
B8
AB
6C
AB
E2
03:
<><><><><><><> <> <><><><>
<><> CHECKPO I NT
13 <><>
AL,INT TYPE
INTBO'-;-AL
AL.02H
BO 14
E6 80
AS
47
47
E2 FB
-
110 DELAY
BO 13
E6 80
0078
FF
C7
0000 E
; RESET MATH PROCESSOR
<><><><><><><><><><><><>
<><> CHECKPO I NT
15 <><>
SET VIDEO
INTERRUPT AREA
SET UP ADDRESS OF VECTOR TA8LE
SET AX=SEGMENT
;START WITH VIDEO ENTRY
MOVE VECTOR TABLE TO LOW MEMORY
SK I P SEGMENT PO INTER
TESTl 5-47
IBM Peraonal Computer MACRO Aaaembler
TESTI ---- 06/10/85
POWER ON SELF TEST
2111
2112
2113
2114
2115
2116
2117
2118 0689
2119
2120 06BC
2121 06BE
2122
2123
2124
2125 06CO
2126 06C2
2127 06C5
2128 06C7
2129
2130 06C9
2131 06CB
2132 06CE
21330600
2134
2135 0602
2136
2137
2138
2139 0604
2140 0606
2141
2142 0608
2143 0608
2144 06DE
2145 06EO
2146 06E2
2147 06E5
2148
2149
2150
2151 06El
2152 06EA
2153 06EO
2154 06F3
2155
2156 06F5
2151 06Fl
215806F9
2159 06F9
2160 06FB
2161 06FB
2162 06FO
2163
2164 0100
2165 0102
2166 0104
2167 0106
2168
2169 0108
2110 010A
2111 0100
2112 010F
21130111
21140113
21150115
21160111
2117 0719
2118 011B
2119 OliO
2180 0120
2181 0122
2182 0124
2163 0121
2184 0129
2185
2186
2161
2188 012B
2189 012E
2190 0131
2191 0733
2192 0135
2193
2194
2195
2196 0138
2191 0138
2198 073B
2199 013E
2200 0740
2201
2202 0142
2203 0744
2204 0746
2205 0149
2206 0149
2201 014B
2208
2209
2210
2211 0740
2212 014F
2213 0151
2214
2215
2216
22110153
2218 0155
2219
2220 0157
2221 015A
2222
2223 0150
2224 0160
5-48
Version 2.00
(POSn
1-21
06-10-85
TEST.12
VERIFY CMOS CHECKSUM/BATTERY OK
OESCR I PT I ON
OETERM I NE IF CONF I G RECORD
CAN BE USED FOR INITIALIZATiON.
:
:
:
:
: ---- ------------------ -----------------E8 0000 E
ASSUME
CALL
OS:OATA
DDS
BO 16
E6 80
MOV
OUT
AL,16H
MFG_PORT ,AL
:-----
SET THE DATA SEGMENT
'<>'<> '<>'<> '<>'<>'<>'<>'<> '<> '<> '<>
'<>'<> CHECKPO I NT
16
IS THE BATTERY LOW THIS POWER UP?
BO
E8
A8
74
80
0000 E
80
DB
MOV
CALL
TEST
JZ
AL, CMOS REG O+NM I
CMOS REAO
AL,10000000B
CMOS 1 A
80
E8
A8
74
8E
0000 E
80
15
MOV
CALL
TEST
JZ
AL, CMOS 0 I ACi+NM I
CMOS READ
AL,BAD BAT
CMOS I -
GET THE OLD STATUS
FROM DIAGNOSTIC STATUS BYTE
HAS CUSTOMER SETUP BEEN EXECUTED?
GO CHECK CHECKSUM IF YES
JMP
SHORT CMOS4
CONT I NUE WITHOUT CONF I GURAT I ON
E8 64
;
;
CHECK BATTERY CONDiTiON
READ THE BATTERY STATUS
IS THE BATTERY LOW?
ERROR IF YES
SET DEFECTIVE BATTERY FLACi
80 17
E6 80
88
E8
OC
86
E6
EB
8E8E
0000 E
80
C4
0000 E
51
88
E6
61
15
8E6E
0000 E
3E 0012 R 1234
04
24 10
EB 02
CMOSIA:
MOV
OUT
AL,11H
MFG_PORT ,AL
MOV
CALL
AX,X·{CMOS DIAG+NMI!
CMOS READ AL,BAO BAT
AL,AH CMOS WR ITE
SHORT
CMOS4
OR
XCHCi
CALL
JMP
;-----
VERIFY CHECKSUM
CMOS I:
MOV
CALL
CMP
JNZ
ANa
JMP
A:
SUB
CMOS 1 B:
XCHG
CALL
'<>'<>'<> '<> '<> '<>'<>'<>'<> '<>'<>'<>
17 '<>'<>
'<>'<> CHECKPOINT
CMOS DIAGNOSTIC STATUS BYTE
GET THE CURRENT STATUS
SET THE DEAD BATTERY FLAG
SAVE
OUTPUT THE STATUS
GO TO MINIMUM CONFIGURATION
AX,X·(CMOS DIAG+NMI)
CMOS READ IIIRESET FLAG, 1234H
CMOS I_A
CLEAR OLD STATUS
GET THE CURRENT STATUS
IS THIS A SOFT RESET
GO IF NOT
AL,W MEM SIZE
SHORT CMOS I_B
CLEAR ALL BUT THE CMOS/POR MEMORY SIZE
AL,AL
CLEAR STATUS
CMOSI
2A CO
86 C4
E8 0000 E
2B
2B
BI
B5
DB
C9
90
AE
8A
E8
2A
03
FE
3A
15
DB
CMOS2:
BO
E8
8A
BO
E8
3B
74
CI
0000 E
E4
08
CI
E9
FI
DB
10
AE
0000 E
EO
AF
0000 E
C3
00
;-----
SET CMOS CHECKSUM ERROR
B8
E8
DC
86
E8
8E8E
0000 E
40
C4
0000 E
CMOS3:
MOV
CALL
14
SUB
SUB
MOV
MOV
BX,BX
CX,CX
CL,CMOS 01 SKETTE+NM I
CH,CMOS=CKSUM_HI +NM I
MOV
CALL
SUB
AOO
INC
CMP
JNZ
AL,CL
CMOS READ
AH,AH
BX,AX
OR
JZ
MOV
CALL
MOV
MOV
CALL
CMP
JZ
OR
XCHG
CALL
IF POWER ON RESET
SAVE THE CURRENT STATUS
SET START OF CMOS CHECKSUMEO AREA
SET END OF CMOS CHECKSUMED AREA + 1
(FIRST BYTE OF CHECKSUM!
ADDRESS THE BEGINNING
INSURE AH=O
ADD TO CURRENT VALUE
PO I NT TO NEXT BYTE ADDRESS I N CMOS
FINISHED?
(AT CHECKSUM BYTE HIGH)
GO IF NOT
BX MUST NOT BE 0
CMOS BAD IF CHECKSUM=O
GET THE CHECK SUM HIGH BYTE
FIRST BYTE OF CHECKSUM
SAVE IT
SECOND BYTE OF CHECKSUM
CL
CH,CL
CMOS2
BX,BX
CMOS3
AL,CMOS CKSUM HI+NMI
CMOS READ
AH,AL
AL,CMOS CKSUM LO+NMI
CMOS READ
AX,BX
CMOS4
I S THE CHECKSUM OK
GO IF YES
AX,X·{CMOS DIAG+NMI)
CMOS READ AL ,BAD CKSUM
AL,AH CMOS_WRITE
ADDRESS DIAGNOSTIC STATUS
GET THE CURRENT STATUS
SET BAD CHECKSUM FLAG
SAVE IT
SET FLAG
I NSURE CMOS 0 I V I DERS SET
CMOS4:
B8
E8
24
75
8A8A
0000 E
OF
01
BO 26
86 C4
E8 0000 E
MOV
CALL
ANa
JNZ
AX,X·{CMOS REG A+NMI!
CMOS READ AL,OOFH
CMOS9
ADDRESS CMOS REGISTER A
GET CURRENT 0 I V I SOR S
LOOK AT PERIODIC RATE BITS
EX I T I F SET TO SOMETH I NG USEFUL
MOV
XCHG
CALL
AL ,26H
AL,AH
CMOS_WR ITE
ELSE SET THE STANDARD DEFAULT USED BY
BIOS FOR THE 916.56 US RATE
FOR THE PER I 00 I C CLOCK
MOV
OUT
AL,18H
MFG_PORT, AL
CMOS9:
BO 18
E6 80
;-----
'<>'<> '<>'<>'<> '<>'<>'<>'<>'<>'<>'<>
18 '<>'<>
'<>'<> CHECKPO I NT
ENABLE PROTECTED MODE
E4 61
DC OC
E6 61
OUT
BO 19
E6 80
MO'
OUT
AL,19H
MFG_PORT ,AL
B8 018F
E8 0000 E
MOV
CALL
AX, I ·H+ (CMOS SHUT DOWN+NM I !
: SET THE RETURN ADDRESS FOR
CMOS_WRITE
I THE FIRST SHUTDOWN RETURN ADDRESS
BC 0000
8E 04
MO'
MO'
SP,POST SS
SS, SP
-
IN
OR
AL,PORT B
AL, RAM PAR OFF
PORT_B:AL -
SET RETURN ADDRESS BYTE
TESTl
DISABLE MEMORY AND
I/O PARITY CHECKS
IN CMOS
'<>'<>'<>'<>'<>'<>'<>'<>'<>'<>'<> '<>
'<>'<> CHECKPO I NT
19 '<>'<>
;
SET STACK FOR SYSINITI
IBM Personal Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
2225 0162
2226 0165
2221
2228
2229 0166
2230 016.1.
2231
2232
2233
2234 016C
2235 016E
2236 016F
2231 0115
2238 011.1.
2239 0170
2240 011F
2241
2242
2243
2244
2245
2246
2241
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259 0182
2260 0185
2261 0168
2262
2263 016.1.
2264 0180
2265 0190
2266
2261
2266
2269 0193
2270 0194
2211
2212
2273
2214 0196
2215
2276
2217
2216 019C
2219
2280
2261
2282 01AI
2283 01.1.6
2284
2285 01AC
2286 01AE
2281
2288 01BO
2289
2290
2291
2292 0183
2293 01B3
2294 0185
2295 01B6
2296 01B9
2291 018B
2298
2299 018E
2300 018E
2301
2302
2303
2304 01C 1
2305
2306
2301
2308 01C5
2309 01CA
2310 01CC
2311 01eF
2312
2313
2314
23150702
2316 0702
2311 0104
2318 0701
2319 0709
2320 070C
2321 070E
2322 OlE 1
2323 01E4
2324 01E6
2325
2326 01E8
2321 01E9
2328 01EB
2329
2330
2331
2332 01EC
2333 01F2
2334 01F3
2335
2336
2331
2338 07F5
1-22
06-10-85
Version 2.00
(POST)
BC 8000
E8 0000 E
"OV
BO I A
E6 80
"OV
; CALL THE DESCRIPTOR TABLE BUILDER
AND REAL-TO-PROTECTED MODE SWITCHER
CALL
OUT
<><><><><><><><><><><><>
<><> CHECKPOINT lA <><>
AL,IAH
MFG _PORT, AL
SET TEMPORARY STACK
6A
IF
Cl
C6
BE
8E
BC
06
PUSH
POP
06 005.1. 0000
06 005C 00
0056
06
FFFD
"OV
,
SET
(OS II
SELECTOR TO GOT SEGMENT
"OV
"OV
"OV
MOV
;
;
;
----- -- - -- - - - ---- - - - - -- - - --- -- - - - ----- --- - - - - ---- - ----- - - ---- -- - -- --- ---- -- --TEST. 13
PROTECTED MODE TEST AND MEMORY SIZE DETERMINE
--> 640K I
(0
;
; DESCR I PT I ON:
;
;
;
;
;
;
THIS ROUTINE RUNS IN PROTECTED MODE IN ORDER TO.ADDRESS ALL OF STORAGE.
IT CHECKS THE MACHINE STATUS WORD (MSW} FOR PROTECTED MODE AND THE BASE
MEMORY SIZE IS DETERMINED AND SAVED.
BIT 4 OF THE CMOS DIAGNOSTIC
STATUS BYTE IS SET IF 512K --> 640K MEMORY IS INSTALLED.
OUR I NG A POWER UP SEQUENCE THE MEMORY SIZE DETERM I NE 1 S DONE WITH
PLANAR AND I/O PARITY CHECKS DISABLED.
DURING A SOFT RESET THE MEMORY
SIZE DETERMINE WILL CHECK FOR PARITY ERRORS.
;-----
F4
EB FD
GET THE MACHINE STATUS WORD
AX
SHUT_S:
MOV
CALL
AX, S-H+ (CMOS SHUT DOWN+NM I).
; SET THE RETURN ADDRESS
CMOS WR I TE
; AND SET SHUTDOWN 6
PROC:SHUTODWN
; CAUSE A SHUTDOWN
; -----
V I RTUAL MODE ERROR HALT
SHUTS:
HLT
OF 0 I EO
A9 000 I
75 OC
B8 086F
E6 0000 E
E9 0000 E
INSURE PROTECTED MODE
SMSW
OB
TEST
JNZ
J"P
J"P
;-----
OOFH. 00 I H. OEOH
~~I(~~TUAL_ENABLE
ARE WE
SHUT8
;
I N PROTECTED MODE
ERROR HALT
64K SEGMENT LIMIT
Cl 06 0046 FFFF
;-----
CPLO. DATA ACCESS RIGHTS
MOV
C6 06 0040 93
;-----
BYTE PTR OS: (ES_TEMP.DATA_ACC_RIGHTS) ,CPLO_DATA_ACCESS
START WITH SEGMENT ADDRESS 01-0000
(SECOND MK)
C6 06 004C 01
Cl 06 004A 0000
MOV
MOV
BYTE PTR OS: (ES TEMP.BASE HI BYTE) .OtH
DS:ES_TEMP.BASE:LD_WORD,OH-
BO IB
E6 80
MOV
OUT
AL, tBH
MFG_PORT • AL
88 0040
"OV
;-----
6A
01
E8
14
E9
48
0102 R
03
0810 R
83 C3 40
<><> <><><;>0<><><><><><><>
<><> CHECKPO I NT 1B <><>
SET THE FIRST 64K DONE
START STORAGE SIZE/CLEAR
NOT DONE:
PUSH
POP
CALL
JZ
J"P
ES
-
NOT FIN:
.1.00
FE 06 004C
INC
(OXOOOO)
BLOCK
BYTE PTR OS: (ES_TEMP.BASE_HI_BYTE\
CHECK FOR ENO OF FIRST 640K
CMP
..JNZ
CALL
..JMP
3E 004C OA
El
0840 R
0810 R
;-----
28 FF
88 AA55
8B C8
26: 89 05
80 OF
26: 88 05
26: 89 05
33 C 1
15 65
1E
6A 16
IF
POINT ES TO DATA
PO I NT TO SEGMENT TO TEST
DO THE FIRST 64K
CHECK IF TOP OF MEMORY
8UMP MEMORY COUNT BY 64K
DO NEXT 64K
80
15
E8
E9
:
;
I
1
BYTE PTR ES TEMP
HOW BIG
NOT-FIN
DONE
(END OF BASE MEMORY)
BYTE PTR OS: IES TEMP. BASE HI 8YTE) ,OAH
NOT DONE
;-GO-IF NOT
HOW-BIG END
; GO SET MEMORY SIZE
DONE-
FILL/CHECK LOOP
HOW BIG:
SUB
"OV
MOV
JNZ
01.01
AX,OAA55H
CX,AX
ES; [01] ,AX
AL.OFH
AX.ES:[DI]
ES; [01] ,AX
AX,CX
HOW_BIG_END
PUSH
PUSH
BYTE PTR RSDA PTR
"OV
"OV
MOV
"OV
XOR
POP
;
I
I
;
;
;
;
;
as
os
TEST PATTERN
SAVE PATTERN
WRITE PATTERN TO MEMORY
PUT SOMETH I NG IN AL
GET PATTERN
INSURE NO PARITY I/O CHECK
COMPARE PATTERNS
GO END I F NO COMPARE
POINT TO SYSTEM DATA AREA
GET (OS;)
-
IS THIS A SOFT RESET
e"p
81 3E 0012 R 1234
IF
15 36
POP
JNZ
26: Cl 05 0101
MOV
PRESET FLAG, 1234H
as
SOFT RESET
RESTORE OS
GO I F NOT SOFT RESET
-
HOW_8I G_2
INSURE NO PARITY WITH PARITY BITS OFF
WORD PTR ES:[DI].010IH
;
TURN OFF BOTH PARITY 8ITS
TEST1
5-49
IBM Personal Computer MACRO A55embler
TESTI ---- 06/10/85
POWER ON SELF TEST
2339
2340 01FA E4 61
2341 01FC DC OC
2342 01FE E6 61
2343 0800 24 F3
2344 0802 E6 61
2345 0804 6A FF
2346 0806 58
2341 0801 26: 88 05
2348
2349 080A E4 61
2350 080C 24 CO
2351 080E 26: 89 05
23520811 75 3A
2353
2354
2355
2356 0813 26: C7 05 FFFF
2357 DB 18 26: 89 05
2358081950
2359 081C E4 61
2360 081E 24 CO
2361 0820 26: 89 05
2362 0823 58
2363 0824 75 21
2364 0826 3D FFFF
2365 0829 75 22
2366
2367
2368
2369 0828
2370 0828 28 CO
2311 0820 89 8000
2312 0830 F3/ AS
2313
2314 0832 IE
2375 0833 06
2316 0834 06
2317 0835 IF
2378 0836 89 BOOO
2319 0839 28 F6
2380 0838 F3/ AD
2381 0830 28 FF
2382 083F E4 61
2383 0841 24 CO
2384 0843 26: C1 05 0000
2385 0848 07
2386 0849 IF
2387 084A 15 01
2388
2389 084C C3
2390
2391 0840
2392 0840 9C
2393 084E 60 1C
2394 0850 E6 80
2395
2396
2397
2398 0852 88 8383
2399 0855 E8 0000 E
2400 0858 OC 80
2401 085A 81 F8 0200
2402 085E 77 02
2403 0860 24 7F
2404 0862
2405 0862 86 C4
2406 0864 E8 0000 E
2407
2408 0867 6A 18
2409 0869 1F
2410 086A 89 IE 0013 R
2411 OB6E 90
2412 086F C3
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426 0870
2427 0870 6A 08
2428 0872 IF
2429
2430
2431
2432 0873 C6 06 004C 10
2433 087B C7 06 004A 0000
2434
2435 087E 80 10
2436 0880 E6 80
2437
2438 0882 28 08
2439
2440
2441
2442 0884
2443 0884 6A 48
2444 0886 07
2445 0887 E8 08A3 R
2446 088A 74 03
2447
2448 088C £9 092A R
2449
2450 088F 83 C3 40
2451
2452
5-50
TESTl
Ver5ion 2.00
(POST)
1-23
06-10-85
PUSH
AL,PORT B
AL, RAM PAR OFF
PORT B~AL AL,RAM PAR ON
PORT B~AL BYTE-PTR OFFH
POP
MOV
AX
AX,ES: [01]
[N
OR
OUT
ANa
OUT
[N
AND
MOV
JNZ
TOGGLE PAR[TY CHECK ENABLES
PLACE OFFFFH IN STACK (BUS B[TS ON)
DELAY - CAUSING BUS BITS ON
CHECK PAR I TY
CHECK FOR PLANAR OR
AL,PORT B
AL ,PAR (TY ERR
ES:[O[],AX
HOW_8I G_END
I/O PARITY CHECK
CLEAR pass IBLE PAR I TY ERROR
GO [F PLANAR OR I/O PARITY CHECK
CHECK ALL 81 TS WR [TE OK
MOV
MOV
WORD PTR ES:[DI],OFFFFH
AX,ES:[D[]
PUSH
AX
AL,PDRT B
AL.PAR[Ty ERR
ES:[D[] ,AX
AX
HOW BIG END
AX,OFFFFH
HOW_BIG_END
[N
AND
MOV
POP
JNZ
eMP
JNZ
TURN ON ALL 8 I TS
CHECK FOR FFFFH
SAVE RESULTS
CHECK FOR PLANAR OR
[10 PAR I TY CHECK
CLEAR POSSIBLE PARITY ERROR
GET RESULTS
GO I F PAR I TY CHECK
CHECK 64K BLOCK FOR PAR [TY CHECK
HOW BIG 2:
-SU8
MOV
REP
PUSH
PUSH
PUSH
POP
MOV
SUB
REP
SUB
[N
AND
MOV
POP
POP
JNZ
AX,AX
CX,2000H·4
STOSW
WR [TE ZEROS
SET COUNT FOR 32K WORDS
FILL 32K WORDS
OS
ES
ES
OS
CX.2000H·4
S [, S I
LODSW
01,01
AL,PORT B
AL,PARITY ERR
WORD PTR ES: [DI].O
ES
CLEAR POSSIBLE PARITY ERROR
RESTORE SEGMENTS
HOW_8IG_END
GO IF PLANAR OR
GET ES TO OS
SET COUNT FOR 32K WORDS
SET TO BEG I NN I NG OF BLOCK
CHECK FOR PLANAR OR 110 PAR[TY CHECK
as
[10 PAR[TY CHECK
RET
HOW BIG END:
-PUSHF
MDV
OUT
;-----
I
SAVE THE CURRENT FLAGS
<> <> <><> <> <> <> <> <> <> <> <>
<><> CHECK PO I NT
I C <><>
AL, tCH
MFG_PORT ,AL
SET OR RESET 512 TO 640
[NSTALLED FLAG
MOV
CALL
OR
CMP
JA
AND
AX, X· (CMOS I NFO I 28+NM I )
CMOS READ AL,M640K
BX, 512
K640
AL, NOT M640K
SET IRESET 640K STATUS FLAG
GET THE D[AGNOSTIC STATUS
XCHG
AL,AH
CMOS_WR I TE
SAVE THE STATUS
RESTORE THE STATUS
8YTE PTR RSDA PTR
OS
@MEMORY_SIZE,BX
RESTORE THE DATA SEGMENT
CHECK MEMORY SIZE
SET FLAG FOR 512 -> 640
[NSTALLEO
K640 :
CALL
PUSH
PDP
MOV
SAVE MEMORY SIZE
RESTORE THE FLAG REG I STER
POPF
RET
; --- -- --------------------- -----I
----------------- -- - ------------- - ----
TEST. 13A
PROTECTED MODE TEST AND MEMORY SIZE DETERM I NE
(ABOVE
1024K )
;
;
;
;
;
;
;
DESCRIPTION:
THIS ROUTINE RUNS IN PROTECTED MODE IN ORDER TO ADDRESS ABOVE I MEG.
THE MEMORY SIZE IS DETERMINED AND SAVED IN CMOS.
OUR I NG A POWER UP SEQUENCE THE MEMORY SIZE DETERM I NE J S DONE WITH
PLANAR AND I/O PARITY CHECKS DISABLED.
DURING A SOFT RESET THE MEMORY
SIZE DETERMINE W[LL CHECK FOR PARITY ERRORS.
DONE:
PUSH
PDP
BYTE PTR GOT PTR
OS
-
START WITH SEGMENT ADDRESS
MOV
MOV
;
10-0000
PO I NT OS TO THE DESCR I PTOR TABLE
(ONE MEG AND ABOVE)
BYTE PTR OS: (ES TEMP .BASE H I BYTE), I OH
DS:ES_TEMP.BASE:::\O_WORO,OH-
MOV
OUT
AL, tDH
MFG_PORT, AL
SUB
BX,BX
<> <> <><><><><><><> <> <> <>
<><> CHECKPO[NT
10 <><>
START WITH COUNT 0
ST ART STORAGE S I ZEI CLEAR
NOT DONE I:
PUSH
DONEA:
BYTE PTR ES TEMP
ES
CALL
JZ
HOW BIGI
DONEA
JMP
DONE!
GO
ADD
BX,16·4
BUMP MEMORY COUNT BY 64K
DO NEXT 64K
-
POINT ES TO DATA
POINT TO SEGMENT TO TEST
DO THE FIRST 64K
CHECK I F TOP
POP
(XXOOOO)
BLOCK
IF TOP
IBM Personal ComPlJter MACRO Assembler
TEST! ---- 06/10/85
POWER ON SELF TEST
2453
2454 0892 FE 06 004C
2455
2456
2457
2458 0896 80 3E 004C FE
2459 0898 75 E7
2460 0890 E8 0917 R
2461 08AO E9 092A R
2462
2463
2464
2465 08A3
2466 08A3 28 FF
2467 D8A5 88 AA55
2468 D8A8 88 C8
2469 D8AA 26: 89 05
2470 08AD 80 OF
2471 08AF 26: 8805
2472 0862 26: 89 05
2473 0885 33 CI
2474 08B7 75 5E
2475
2476
2477
2478 0889 IE
2479 088A 6A 18
2480 088C IF
2481 088081 3E 0072 R 1234
2482 08C3 IF
2483 08C4 75 2F
2484
2485
2486
2487 08C6 26: C7 05 0101
2488 08C8 6A FF
2489 08CO 58
2490 08CE 26: 8B 05
2491
2492 080 I E4 61
2493 0803 24 CO
2494 OelO5 26: 89 05
2495 0808 75 3D
2496
2497
2498
2499 08DA 26: C7 05 FFFF
2500 080F 6A 00
250 I 08E 1 58
2502 08E2 26: 88 05
2503 08E5 50
2504 08E6 E4 61
2505 08E8 24 CO
2506 08EA 26: 89 05
2507 08EO 58
2508 08EE 75 27
2509 08FO 3D FFFF
2510 08F3 75 22
251 I
2512
2513
2514 08F5
2515 08F5 2B CO
2516 08F7 B9 8000
2517 08FA F3/ AB
2518
2519
2520
2521 08FC IE
2522 08FD 06
2523 08FE 06
2524 08FF 1F
2525 0900 B9 8000
2526 09113 2B F6
2527 0905 F3/ AD
2528 0907 2B FF
2529 0909 E4 61
2530 090B 24 CO
2531 0900 26: C7 05 0000
2532 0912 07
2533 0913 IF
2534 0914 75 01
2535
2536 0916 C3
2537
25380917
2539 0917 BO IE
25400919 E6 80
2541
2542
2543
2544 091B BO BO
2545 0910 8A E3
2546 091 F E8 0000 E
2547 0922 BO BI
2548 0924 8A E7
2549 0926 E8 0000 E
2550 0929 C3
2551
2552
2553
2554 092A BO IF
2555 092C E6 80
2556 092E C6 06 004C 00
2557 0933 2B FF
2558 0935 BA FFFF
2559 0938 E8 0967 R
2560 0938 28 02
2561
2562 0930 C6 06 004C 08
2563 0942 E8 0967 R
2564 0945 C6 06 004C 10
2565 094A E8 0967 R
2566 0940 C6 06 004C 20
INC
;-----
BYTE PTR OS: (ES_TEMP.BASE_HI_BYTEI
CHECK FOR TOP OF MEMORY
eMP
JNZ
CALL
JMP
;-----
1-24
06-10-85
Version 2.00
(POST)
(FEOOOO)
BYTE PTR OS: (ES TEMP.BASE HI BYTEI,OFEH
NOT DONEI
HOW-BIG ENOl
DONE I
-
LAST OF MEMORY?
GO IF NOT
GO SET MEMORY SIZE
FILL/CHECK LOOP
HOW BIGI:
SUB
MaY
MaY
MaY
MaY
MaY
MaY
XOR
JNZ
OI,DJ
AX,OAA55H
CX,AX
ES:[OI),AX
AL,OFH
AX,ES: [01 1
ES:[ol),AX
AX,CX
HOW_BIG_ENoI
TEST PATTERN
SAVE PATTERN
SEND PATTERN TO MEMORY
PUT SOMETH I NG IN AL
GET PATTERN
INSURE NO PAR ITY I fO CHECK
COMPARE PATTERNS
GO END I F NO COMPARE
IS THI S A SOFT RESET
PUSH
PUSH
pop
eMP
pop
JNZ
as
as
as
BYTE PTR RSOA PTR
POINT TO SYSTEM DATA AREA
ilIRESET FLAG,I234H
SOFT RESET
RESTORE OS
GO I F NOT SOFT RESET
-
-
HOW_BIG_2A
CHECK PARITY WITH PARITY BITS OFF
MaY
PUSH
pop
MaY
WORD PTR ES:[Dlj,OIOIH
BYTE PTR OFFH
AX
AX,ES:[DI1
TURN OFF BOTH PAR I TY 8 I TS
PLACE OFFFFH IN STACK (BUS BITS ON I
DELAY - CAUSIN(; BUS BITS ON
CHECK PAR I TY
IN
AL,PORT B
AL, PAR !'TY ERR
ES:[OI),AX
HOW_BIG_ENOl
CHECK FOR PLANAR OR
ANa
MaY
JNZ
liD PARITY CHECK
CLEAR POSSIBLE PARITY ERROR
GO IF PLANAR OR I/O PARITY CHECK
CHECK ALL BITS
MaY
PUSH
pop
MaY
PUSH
IN
ANa
MaY
pop
JNZ
eMP
JNZ
WORD PTR ES: [011 ,OFFFFH
BYTE PTR 0
;
AX
AX,ESI (011
;
AX
AL,PORT B
AL,PARITY ERR
ES: [Oll,AX
AX
HOW BIG ENOl
AX,OFFFFH
HOW_B I G_ENO I
TURN ON ALL BITS
PLACE OOOOOH IN STACK (BUS BITS OFF)
DELAY - CAUSING BUS BITS OFF
CHECK FOR FFFFH
SAVE RESULTS
CHECK FOR PLANAR OR 110 PARITY CHECK
CLEAR POSSIBLE PARITY ERROR
GET RESULTS
IF PLANAR OR I/O PARITY CHECK
(;0
CLEAR 64K BLOCK OF MEMORY
HOW BIG 2A:
-SUB
MaY
REP
AX,AX
CX,2000H·4
STOSW
; WR I TE ZEROS
; SET COUNT FOR 32K WORDS
; FILL 32K WORDS
CHECK 64K BLOCK FOR PARITY CHECK
PUSH
PUSH
PUSH
pop
MaY
SUB
REP
SUB
IN
ANa
MaY
pop
pop
JNZ
(VALID TEST
~URING
SOFT RESET ONLY)
as
ES
ES
GET ES TO OS
CX,2000H·4
SET COUNT FOR 32K WORDS
as
S I, S I
LOOSW
01,01
AL ,PORT 8
AL,PARITY ERR
WORD PTR ES:[Olj,o
SET TO BEG I NN I NG OF BLOCK
CHECK FOR PLANAR OR I/O PAR I TY CHECK
ES
CLEAR POSS I BLE PAR I TY ERROR
RESTORE SEGMENT
HOW_BI G_ENDI
GO
as
IF PLANAR OR
110 PARITY CHECK
RET
HOW BIG ENOl:
-MOV
OUT
;-----
AL,IEH
MFG_PORT, AL
<><><> <><><> <><><><><><>
<><> CHECKPO I NT
! E <><>
SET EXPANSION MEMORY SIZE DETERMINED IN CMOS
MaY
MaY
CALL
MaY
MaY
CALL.
AL,CMOS U M S LO+NMI
AH,BL
- - - CMOS WR I TE
AL,CMOS U M S HI+NMI
AH,BH
- - - CMOS_WR I TE
ADDRESS LOW BYTE
GET LOW MEMORY SIZE
SET LOW 8YTE
ADDRESS H I BYTE
GET THE HIGH MEMORY SIZE
PLACE I N CMOS
RET
;----DONE!:
TEST ADDRESS LINES 19 MOV
OUT
MaY
SUB
MaY
CALL
SUB
MOV
CALL
MOV
CALL
MOV
23
AL,IFH
<><><><><><><><><><><><>
MFG PORT, AL
, < > < > CHECKPO I NT
1F <><>
BYTE PTR OS: (ES TEMP.BASE HI BYTE! ,OOH
01,01
I-SET LOCATION POINTER TO ZERO
OX,OFFFFH
; WRITE FFFF AT ADDRESS 0
500
OX,OX
;
WRITE 0
BYTE PTR OS: (ES TEMP.BASE HI BYTE) ,08H
SOO
BYTE PTR OS: (ES TEMP. BASE H I BYTE), IOH
SOO
BYTE PTR OS: (ES_TEMP.BASE_HI_BYTE! ,20H
TEST1
5-51
~ersion
IBM Personal <;:omputer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
2561
2568
2569
2510
2511
2572
2573
2514
2575
2516
2511
2578
2579
2580
2581
2582
2583
2584
2585
2586
2581
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
26 I 3
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2621
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2615
2616
2677
2678
2679
2680
0952
0955
095A
0950
0962
E8
C6
E8
C6
E8
0965 E8
0961 R
06 004C 40
0967 R
06 004C 80
0961 R
CALL
MOV
CAL..L
MOV
CALL
18
0967
0961 6A 48
0969 01
096A 26: 89
1-25
06-10-85
2.00
(POSn
SOD
BYTE PTR OS: (ES TEMP.BASE HI BYTE) ,40H
SOD
BYTE PTR OS: (ES TEMP.BASE HI 8YTE) ,80H
SDO
SHORT SD2
TEST PASSED CONT I NUE
BYTE PTR ES TEMP
E5
ES: [OI],DX
POINT ES TO DATA
PO I NT TO SEGMENT TO TEST
WRITE THE PATTERN
BYTE PTR ES TEMP
E5
WORD PTR ES:[DI],OFFFFH
POINT ES TO DATA
POINT TO SEGMENT TO TEST
DID LOCATiON 0 CHANGE?
CONT I NUE I F NOT
GO HALT IF YES
SDO:
PUSH
POP
MOV
15
0960 C6 06 004C 00
0912
0974
0915
0919
0978
091E
091E
6A 48
01
26: 83 3D FF
74 03
E9 OHIA R
091F
0981
0963
0985
0987
0989
0988
0980
BO
E6
E4
OC
E6
24
E6
E9
PUSH
POP
eMP
JZ
JMP
501
SHUT_8
SOl;
C3
RET
CAUSE A SHUTDOWN
20
80
61
OC
61
F3
61
0000 E
MOV
OUT
SD2:
IN
OR
OUT
AND
OUT
JMP
AL,20H
MFG PORT, AL
AL..,PORT B
AL",RAM' PAR OFF
PORT B~AL AL,RAM PAR ON
PORT B~AL PROC=SHUTDOWN
<> <><> <><><> <> <><> <><> <>
<><> CHECKPOINT 20 <><>
TOGGLE PAR I TY CHECK ENABLES
CAUSE A SHUTOOWN
(RETURN V I A JUMP)
- - --------- ------------;
0990
0992
0994
0991
0999
BO
E6
BC
8E
BC
21
80
099C
099E
09AO
09A3
2B FF
8E C7
B8 0000 E
A8
RETURN
SHUT1:
1 _ FROM SHUTDOWN
MOV
OUT
MOV
MOV
MOV
-~-~ R
04
0400 R
AL,21H
MFG PORT ,AL
SP, ABSO
SS, SP
SP, OFFSET @TOS
<> <> <><> <> <> <><> <><> <> <>
21 <><>
<><> CHECKPOINT
SET REAL MODE STACK
SET 0 I V I DE 0 VECTOR OFFSET
SUB
"OV
MOV
01,01
ES,DI
AX.oFFSET DII
POINT TO FIRST INTERRUPT LOCATION
SET ES TO ABSO SEGMENT
GET ADDRESS. OF INTERRUPT OFFSET
PLACE OFFSET IF NUL..L HANDLER I N VECTOR
ODS
SET UP THE REAL DATA AREA
STOSW
09A4 E8 0000 E
CALL
GET THE CONFIGURATION FROM CMOS
09;\7
09AA
09AO
09AF
09B 1
0984
0984
0986
0988
88
E8
A8
14
E9
8E8E
0000 E
CO
03
OA3A R
MOV
CALL
TEST
JZ
JMP
24 OF
86 C4
E8 0000 E
AND
XCHG
CALL
;-----
80
E8
24
3C
75
CLEAR THE MINIMUM CONFIG BIT
SAVE THE STATUS BYTE
BACK I NTO CMOS
IN MODE
CHECK FOR SOFT RESET
BYPASS I F SOFT RESET
JNE
AL,CMOS B M S HI-tNMI
CMOS REAO- - AL,OCOH
AL.OCOH
M_OK_64
MASK FOR MANUFACTUR I NG, TEST BI TS
CHECK FOR MANUFACTURING TEST MODE SET
SKIP IF NOT MANUFACTURING LINE TEST
MOV
BYTE PTR @RESET_FLAG,64H; ELSE SET THE MFG TEST FLAG
CALL
AND
eMP
09CE C6 06 0012 R 64
AL..,ODFH
AL,AH
CMOS_WRITE
@RESET FLAG, 1234H
M_OK_64
MOV
9C
0000 E
CO
CO
05
CHECK CMOS GOOD
GET THE STATUS
VALID CMOS?
GO IF YES
GO IF NOT
CHECK FOR CMOS RUN
0988 81 3E 0012 R 1234
09CI 74 10
09C3
09C5
09C8
09CA
09CC
AX,X·(CMOS OIAG+NMI)
CMOS READ AL,8AD BAT+BAD CKSUM
M OK
BAD_MOS
GET THE BASE MEMORY SIZE HIGH BYTE
1NSURE CONF I GURAT I ON HAS CORRECT V IDEO TYPE
0903
0903
0905
09D8
09DA
090C
09DE
09El
M OK 64:
80
E8
8A
A8
7q
E8
74
94
0000 E
EO
-
-
31
09EC R
4C
09EA E8 4E
;-----
TEST
JZ
@MFG TST ,MFG LOOP
NORMAL.. _ CONF I G
EXCEPT IF MFG JUMPER
GO IF INSTALLED
JMP
SHORT BAD_MOS
GO DEFAULT
SAVE VIDEO TYPE
ANY VIDEO?
CONTINUE
I NSURE V IDED ROM PRESENT
CONT INUE
IS
INSTALLED
ROUTINE CHECK FOR VIDEO FEATURE ROM PRESENT
CHK_VIOEO:
89 COOO
50
IE
57
8E
BF
28
8B
3B
5F
IF
58
14
OA02 81
OA06 81
5-52
AL, CMOS EQU I P-tNM I
CMOS READ
AH,A[
AL,030H
MOS OK I
CHK-VIOEO
MOS=OK
GET THE EQU I PMENT BYTE
TEST
JNZ
CALL
JZ
MOV
30
09E3 F6 06 0012 R 20
09E8 74 6F
09EC
09EC
09EF
09EF
09FO
09Fl
09F2
09F4
09F1
09F9
09FB
09FD
09FE
09FF
OAOO
MOV
CALL
MOV
CHK VIDE01:
PUSH
PUSH
PUSH
eX,oeOOOH
START OF FEATURE 1/0 ROM
AX
OC
J.
01
OS
AX
CHK_VIDE02
SAVE THE CONFIGURATION
SAVE THE DATA SEGMENT
SAVE' COMPARE REG I STER
GET ROM SEGMENT
GET THE PRESENCE SIGNATURE
CLEAR I NOEX PO INTER
GET THE FIRST 2 LOCATIONS
IS THE VIDEO FEATURE ROM PRESENT?
RESTORE WORK REG I STER
RESTORE DATA SEGMENT
GET THE CONF 1GURATI ON
GO IF VIDEO ROM INSTALLEO
Cl 0080
F9 C80a
AOO
eMP
CX.080H
CX ,OC800H
PO I NT TO NEXT 2K BLOCK
TOP OF V IDEO ROM AREA YET?
09
AA55
08
07
C7
TESTl
MOV
MOV
SUB
MOV
eMP
POP
POP
POP
DS
01
DS,CX
DI,OAA55H
BX,8X
AX, [BX]
AX,OI
IBM Personal Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
2681
2682
2683
2684
2685
2686
2681
2688
2689
2690
2691
2692
2693
2694
2695
2696
2691
2698
2699
2100
210 I
2102
2103
2104
2105
2106
2101
2108
2109
2110
2111
2112
2113
2114
2115
2116
2111
2118
2119
2120
2121
2122
2723
2124
2725
2726
2127
2128
2129
2730
2131
2132
2733
2134
2735
2736
2731
2738
2739
2140
2741
2742
2143
2144
2745
2746
2741
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2160
2761
2762
2763
2764
2165
2766
2167
2168
2769
2770
2111
2112
2113
2774
2175
2116
2177
2178
2119
2780
2781
2182
2183
2784
2785
2786
2787
2788
2189
2190
2191
2192
2193
2194
OAOA 1C E3
OAOC 23 C9
OAOE
OAOE C3
CHK V[DE02:
RET
OAOF
OAOF E8 09EC R
OAI2 14 26
MOS OK I:
- CALL
JZ
JL
AND
i-----
CHK VIDEO I
cX,Ex
24
3C
15
8A
EB
30
30
11
C4
08
AND
eMP
JNZ
MDV
JMP
TRY AGAIN
SET NON ZERO FLAG
ICHECK FOR PRIMARY DISPLAY AND NO VIDEO ROMI
CHK VIDEO
8AD~)'OS
[S THE VIDEO ROM INSTALLED?
WRONG CONFIGURATION IN CONFIG BYTE
AL,AH
PMFG TST ,DSP .JMP
MOS_OK_2
-
RESTORE CONFIGURATION
CHECK FOR 0 I SPLA Y .JUMPER
GO 1F COLOR CARD 1 S PR I MARY 0 I SPLA Y
MONOCHROME CARD
OAIO
OAIF
OA21
OA23
OA25
f
I
; RETURN TO CALLER
CMOS VIDEO BITS NON ZERO
MDV
TEST
JZ
OAI4 8A C4
OAI6 F6 06 0012 R 40
OAtB 14 OA
1-26
06-10-85
Version 2.00
IPOSn
[S PR 1MARY 0 I SPLA Y
(NO .JUMPER
INSTALLEDI
I NSURE MONOCHROME [5 PR [MARY
CONFIGURATION OK?
GO IF NOT
RESTORE CONFIGURATION
USE THE CONFIGURATION BYTE FOR DISPLAY
AL,30H
AL,30H
BAD MOS
AL,AH
SHORT MOS_OK
COLOR CARD
OA21
OA21 24 30
OA29 3C 30
OA2B 8A C4
OA20 74 OB
MOS_OK_2:
;-----
CONFIGURATION MUST HAVE AT LEAST ONE DISKETTE
OA2F
OA31
OA33
OA38
MOS_OK:
TEST
JNZ
TEST
JZ
A8 01
1526
F6 06 0012 R 20
14 IF
AND
eMP
MDV
JZ
AL,30H
AL,30H
AL,AH
BAD_MOS
STRIP UNWANTED BITS
MUST NOT BE MONO W[TH JUMPER
RESTORE CONFIGURATION
GO IF YES
;
;
i
;
INSTALLED
MUST HAVE AT LEAST ONE DISKETTE
GO SET CONFIGURATION [F OK
EXCEPT IF MFG .JUMPER IS INSTALLED
GO IF INSTALLED
MINIMUM CONFIGURATION WITH BAD CMOS OR NON VALID VIDEO
OA3A
OA3A
OA30
OA40
OMZ
OA44
OM1
OA47
OA4A
OA4C
008E
0000 E
CO
03
BAD MOS:
MOV
CALL
TEST
JNZ
E8 0000 E
CALL
E8 09EC R
BO 0 I
14 OB
BAD MOS 1 :
CALL
Mav
JZ
B8
E8
A8
15
AX,CMOS DIAG+NMI
CMOS READ
AL,BAD BAT+BAD CKSUM
BAD 1'11051
-
GET THE DIAGNOST[C STATUS
WAS BATTERY DEFECT I VE OR BAD CHECKSUM
GO [F YES
CONFI G_BAD
SET THE MINIMUM CONFIGURATION FLAG
CHK V IDEO
AL,OIH
NORMAL_CONF I G
CHECK FOR V [OED ROM
DISKETTE ONLY
GO I F V IDEO ROM PRESENT
OA4E F6 06 0012 R 40
OA53 80 I I
OA55 14 02
TEST
Mav
JZ
~MFG TST ,DSP .JMP
AL,ITH
NORMAL _ CONF I G
CHECK FOR 0 I SPLA Y .JUMPER
DEF AUL T TO 40X25 COLOR
GO IF .JUMPER [S INSTALLED
OA57 BO 31
Mav
AL,31H
DISKETTE! B!W DISPLAY 80X25
CONF I GURAT I ON AND MFG MODE
OA59
OA59 F6 06 0012 R 20
OA5E 75 02
OA60 24 3E
NORMAL CONF I G:
- TEST
JNZ
OA62
OA64
OA61
OA60
NORM 1 :
2A
A3
81
14
E4
0010 R
3E 0012 R 1234
2C
AND
IPMFG TST ,MFG LOOP
NORMT
AL,03EH
IS THE MANUFACTURING JUMPER
GO IF NOT
STRIP DISKETTE FOR MFG TEST
SUB
Mav
eMP
JZ
AH,AH
I1IEQU I P _FLAG, A~
I1IRESET FLAG, 1234H
E6
-
SAVE SWITCH INFORMATiON
BYPASS IF SOFT RESET
INSTALLED
GET THE F[RST SELF TEST RESULTS FROM KEYBOARD
MDV
CALL
Mav
AL, WR I TE_B042_LOC
C8042
AL,4DH
OA76 E6 60
OUT
PORT _A,AL
OA78 2B C9
OA1A E8 039B R
SUB
CX,CX
e42 I
WA 1T FOR COMMAND ACCEPTED
CALL
OA70 B9 7FFF
Mav
CX,01FFFH
IN
TEST
LOOPZ
AL,STATUS_PORT
AL, OUT _BUF _FULL
TST6
SET LOOP COUNT FOR APPROX[MATELY
TO RESPOND
WA 1T FOR OUTPUT BUFFER FULL
OA6F BO 60
OA71 E8 0396 R
OA74 BO 40
OA80 E4 64
OA82 A8 0 I
OA84 EI FA
OAB6
OA87
OA89
OA8C
OA80
9C
80 AD
E8 0396 R
90
74 OC
OA8F E4 60
OA91 A2 0072 R
TST6:
ENABLE KEYBOARD
ISSUE WRITE BYTE COMMAND
ENABLE OUTPUT BUFFER FULL INTERRUPT,
SET SYSTEM FLAG, PC I COMPATIBILITY,
I NH I BI T OVERR I DE, ENABLE KEYBOARD
-
TRY AGAIN
IF NOT
PUSHF
Mav
CALL
POPF
JZ
E6
SAVE FLAGS
D I SABLE KEYBOARD
I S SUE THE COMMAND
RESTORE FLAGS
CONT I NUE WITHOUT RESULTS
IN
"av
AL,PORT_A
BYTE PTR 'lIRESET _FLAG, AL
GET I NPUT FROM KEYBOARD
TEMPORARY SAVE FOR AA RECEIVED
AL,DIS_KBD
C8042
lOOMS
CHECK FOR MFG REQUEST
OA94 3C 65
OA96 15 03
OA98 E9 OC27 R
eMP
JNE
JMP
AL,065H
E6
MFG_BOOT
LOAD MANUFACTUR 1NG TEST REQUEST?
CONT I NUE I F NOT
ELSE GO TO MANUF ACTUR 1NG BOOTSTRAP
TEST.\4
INITIALIZE AND START CRT CONTROLLER (6845)
TEST VIDEO READ/WRITE STORAGE.
DESCR 1PT I ON
RESET THE V IDEO ENABLE SIGNAL.
SELECT ALPHANUMERIC MODE, 40 • 25, B & W.
READ/WRITE DATA PATTERNS TO MEMORY. CHECK
STORAGE ADDRESSABILlT'l'.
ERROR = 1 LONG AND 2 SHORT BEEPS
TESTl
5-53
IBM Personal Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
2795
2796
2797 OA98
2798 OA98 AI 0010 R
2799 OA9E 50
2800 OA9F BO 30
280 I OAA 1 A3 0010 R
2802 OAA4 28 CO
2803 OAA6 CD 10
2804 OAA8 80 20
2805 OAAA A3 00 lOR
2806 OAAD 88 0003
2807 OA80 CO 10
2808 OAB2 98 000 I
2809 OAB5 CD 10
2810 OAB7 58
.2811 OAB8 A3 0010 R
2812 OA8S 24 30
28130AB07511
2814 OABF IE
2815 OACO 50
2816 OAC 1 2B CO
2817 OAC3 8E 08
2818 OAC5 BF 0040 R
2819 OAC8 C7 05 0000 E
2820 OACC 58
2821 OACD IF
2822 OACE EB 7F
2823 OADO
2824 OADO 3C 30
2825 OAD2 74 08
2826 OAD4 FE C4
2827 OA06 3C 20
2B2B DADa 75 02
2829 OADA B4 03
2830 OADC
2831 OADC 86 EO
2832 DADE 50
2833 OADF 2A E4
2834 OAEI CD 10
2835 OAE3 58
2836 OAE4 50
2837 OAE5 88 BOOO
2838 OAE8 BA 03B8
2839 OAE8 89 0800
2840 OAEE 80 FC 30
2841 OAFI 74 07
2842 OAF3 87 B8
2843 OAF5 BA 0308
2844 OAF8 85 20
2845 OAFA
2846 OAFA AO 0065 R
2847 OAFD 24 37
2848 OAFF EE
2849 OBOO 8E C3
2850 OB02 8E DB
2851 OB04 01 C9
2852 OB06 f8 0000 E
2853 0809 75 70
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864 OB08 BO 22
2865 OBOD E6 80
2866
2867 OBOF 58
2868 OBIO 50
2869 0811 84 00
28700813 CD 10
2871 081588 7020
287.2 OB18 2B FF
2873 OBIA B9 0028
2874 0810 F3/ AB
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885 OB1F 58
2886 0820 50
2887 0921 80 FC 30
2888 OB24 BA 03BA
2889 OB27 74 03
2890 0829 BA 03DA
2891 OB2C
2892 OB2C 84 08
2893 OB2E
2894 OB2E 2B C9
2895 OB30
2896 0830 EC
2897 0831 22 C4
2898 0833 75 04
2899 0835 E2 F9
2900 0837 E8 42
2901 0839
2902 0839 2B C9
2903 OB38
2904 OB38 EC
2905 OB3C 22 C4
2906 OB3E 74 04
2907 OB40 E2 F9
2908 0842 EB 37
5-54
TESTl
1-21
Version 2.00
(POST)
06-10-85
E6:
MOV
AX,Q!lEQUIP FLAG
PUSH
AX
"OV
"OV
AL .30H
SUB
INT
"OV
MOV
MOV
INT
MOV
INT
POP
"OV
:~~~~P _FLAG,AX
INT VIDEO
AL,20H
Q!lEQUIP FLAG,AX
AX.0003H
INT VIDEO
AX,OOOIH
INT VIDEO
AX -
AND
PEQU I P FLAG, AX
AL,30H-
"NZ
PUSH
PUSH
OS
AX
SUB
"OV
MOV
"OV
POP
POP
E7 :
-
""P
CMP
"E
E7
AX,AX
SET DATA SEGMENT TO 0
DS,AX
01 • OFFSET @VIOEO I NT
; SET INTERRUPT 10H TO DUMMY
WORD PTR (0 I] ,OFFSET DUMMY RETURN
; RETURN I F NO V IDEO CARD
AX
RESTORE REGISTERS
OS
BYPASS VIDEO TEST
SHORT E18_1
AL,30H
E8
INC
AH
CMP
"OV
AL,20H
E8
AH.3
XCHG
PUSH
AX
SUB
INT
AH,AH
INT VIDEO
POP
AX -
"NE
GET SENSE INFORMATION
SAVE [T
FORCE MONOCHROME TYPE
INTO EQUIPMENT FLAG
MODE SET COMMAND FOR DEFAULT MODE
SEND INITIALIZATION TO B/W CARD
FORCE COLOR AT 80 BY 25
INTO EQUIPMENT FLAG TO CLEAR BUFFERS
AND INITIALIZATION COLOR CARD 80X25
MODE SET 80 X 25
SET COLOR 40 X 25 MODE
SET DEF AUL T COLOR MODE
RECOVER REAL SW I TCH I NFORMAT I ON
RESTORE IT
ISOLATE VIDEO SWITCHES
VIDEO SWITCHES SET TO O?
SAVE THE DATA SEGMENT
B/W CARD ATTACHED?
YES - SET MODE FOR B / W CARD
SET COLOR MODE FOR COLOR CARD
80X25 MODE SELECTED?
NO - SET MODE FOR 40X25
SET MODE FOR 80X25
E8:
AH,AL
PUSH
AX
MOV
MOV
MOV
CMP
BX,OBOOOH
DX,388H
CX,2048
AH,30H
MOV
MOV
BH,OB8H
DX,3D8H
CH,20H
SAVE VIDEO MODE ON STACK
INITIALIZE TO ALPHANUMERIC MD
CALL VIDEO 10
RESTORE V IDEO SENSE SW I TCHES IN AH
SAVE VALUE
STARTING VIDEO MEMORY ADDRESS B/W CARD
MODE REG I STER FOR B/W
MEMORY WORD COUNT FOR B/W CARD
B/W VIDEO CARD ATTACHED?
YES - GO TEST V IDEO STORAGE
STARTiNG MEMORY ADDRESS FOR COLOR CARD
MODE REG I STER FOR COLOR CARD
MEMORY WORD COUNT FOR COLOR CARD
AL, Q!lCRT MODE SET
AL,037HDX,AL
ES,BX
DS,BX
CX,I
STGTST CNT
E17
-
GET CURRENT MODE SET VALUE
SET VIDEO BIT OFF
D I SABLE V IDEO FOR COLOR CARD
POINT ES TO VIDEO MEMORY
POINT OS TO VIDEO MEMORY
DIVIDE BY 2 FOR WORD COUNT
GO TEST VIDEO READ/WRITE STORAGE
R/W MEMORY FAILURE - BEEP SPEAKER
"E
MOV
E'
E9:
MOV
AND
OUT
MOV
MOV
ROR
CALL
"NE
;
- - - -- -- - --- - -- ---- --- - -- --- - --- - -- - - - - - - - - --- ---
; TEST. 15
;
SETUP VIDEO DATA ON SCREEN FOR VIDEO
;
LINE TEST.
; DESCRIPTION
;
ENABLE V IDED SIGNAL AND SET MODE.
;
DISPLAY A HORIZONTAL BAR ON SCREEN.
;
:
- - - - -- - --- - -- - - -- - - - - -- - -- -- - - - -- - --- - -- - - -- - --MOV
OUT
POP
PUSH
MOV
INT
MOV
SUB
"OV
REP
AL.22H
MFG_PORT ,AL
AX
AX
AH,O
INT VIDEO
AX, 'f020H
01,01
CX,40
STOSW
<> <><> <><><> <> <> <> <> <> <>
<><> CHECKPOINT 22 <><>
GET V IDEO SENSE SW ITCHES (AH)
SAVE IT
ENABLE V IDEO AND SET MODE
VIDEO
WR I TE BLANKS I N REVERSE V IDEO
SETUP STARTING LOCATION
NUMBER OF BLANKS TO 0 I SPLA Y
WR I TE V IDEO STORAGE
------
;
------------ -- ------------ ------; TEST.! 6
;
CRT INTERFACE LINES TEST
; DESCRIPTION
;
SENSE ON/OFF TRANSITION OF THE
;
VIDEO ENABLE AND HORIZONTAL
;
SYNC LINES.
POP
PUSH
AX
AX
CMP
MOV
"E
MOV
AH,30H
DX,038AH
EI I
OX,03DAH
SUB
CX,CX
IN
AND
"MP
AI.. ,OX
AL,AH
EI'
EI3
SHORT EI7
SUB
CX,CX
IN
AND
AL,DX
AL,AH
Elb
LOOP
E'5
SHORT EI7
GET V IDEO SENSE SW I TCH I NFORMAT I ON
SAVE IT
B / W CARD A TT ACHED?
SETUP ADDRESS OF B/W STATUS PORT
YES - GO TEST LINES
COLOR CARD IS ATTACHED
Ell:
AH,8
E12:
E13:
"NZ
LOOP
READ CRT STATUS PORT
CHECK VIDEO/HORIZONTAL LINE
ITS ON - CHECK IF IT GOES OFF
LOOF UNT I L ON OR TIMEOUT
GO PR I NT ERROR MESSAGE
E14:
E15:
"Z
"MP
READ CRT STATUS PORT
CHECK VIDEO/HORIZONTAL LINE
I TS ON - CHECK NEXT LINE
LOOP IF ON UNTIL IT GOES OFF
GO ERROR BEEP
IBM Personal Computer MACRO Assembler
TESTI ---- 06/10/85
POWER ON SELF TEST
2909
2910
2911
2912 0844
2913 OB46
2914 0848
2915 084A
2916 OB4A
29170848
2918 0840
2919
2920
2921
2922 OB4F
2923 OB52
2924 OB52
2925 0854
2926 OB56
2927 OB58
2928 0859
2929 OS5C
2930 OB5E
2931 OB60
2932 0862
2933 OB63
2934
2935 0865
2936 OB68
2937 OB6A
2938 OB6A
2939 OB6E
2940 OB6E
2941 OB72
2942
2943 OB74
2944 OB76
2945
2946 0878
2947
2948
2949
2950
2951 OB79
2952
2953
2954
2955 OB7E
2956 OB83
2957 OB88
2958 OB8A
2959 OB8F
2960 OB91
2961 OB94
2962 OB97
2963 OB97
2964 OB98
2965 OB98
2966 0890
2967 089F
2968
2969
2910
2971 OBAI
2912
2913 OBA6
2974 OBA9
2975 08A8
2976 OBAC
2917 OBAF
2978 OBB 1
2979 OB84
2980 0886
2981 OB88
2962 OBBA
2983 OBBC
2984 OBBF
2985 OBCO
2986 OBC2
2987 OBC8
2988 08ce
2989 OBCD
2990 OBCF
2991
2992
2993
2994 OBDI
2995 0801
2996 OBD3
2997 OBD5
2998 OB07
2999 080A
3000 OBOC
3001 OBOO
3002 OBEO
3003 OBE2
3004 OBE5
3005 OBE7
3006 OBE9
3007 OBEB
3008 OBED
3009 oeFO
3010 OBF 1
3011 OBF3
3012 OBF9
3013 08FF
30 14 OCO 1
3015 OC03
3016 OC05
3017 OC05
3018 OC06
3019 OC09
3020 OCOB
3021 OCOD
3022 OCOF
B I 03
02 EC
75 E4
Version 2.00
(POSTI
;-----
CHECK HORIZONTAL LINE
E16:
MOV
SHR
1-28
06-10-85
CL,3
AH,CL
EI2
GET NEXT BIT TO CHECK
JNZ
POP
MOV
INT
AX
AH,O
lNT_VIDEO
GET V IDEO SENSE SW ITCHES (AH I
SET MODE AND 01 SPLAY CURSOR
CALL VIDEO I/O PROCE~URE
CONT I NUE
E18:
58
B4 00
CD 10
BA COOO
BO
E6
8E
57
SF
28
88
38
5F
75
;-----
CHECK FOR THE ADVANCED VIDEO CARD
E 18 I:
EI8A:
MOV
DX,OCOOOH
SET THE LOW SEGMENT VALUE
MOV
OUT
MOV
AL,23H
MFG_PORT, AL
DS,OX
01
Ol,OAA55H
BX,BX
AX, [BX]
AX,OI
01
EI8B
SAVE WORK REGISTER
PRESENCE SIGNATURE
CLEAR PO INTER
GET FIRST 2 LOCATIONS
PRESENT?
RECOVER REG I STER
NO? GO LOOK FOR OTHER MODULES
23
80
OA
PUSH
AA55
08
07
C7
MDV
SUB
MDV
eMP
PDP
JNZ
05
E8 0000 E
EB 04
CALL
<> <> <> <> <> <> <> <> <> <> <> <>
<><> CHECKPOINT 23 <><>
ROM CHECK
SHORT E 1BC
GO SCAN MODULE
JMP
ADD
DX.OOBOH
PO r NT TO NEXT 2K BLOCK
81 FA C800
7C DE
eMP
JL
DX,OCBOOH
EI BA
TOP OF V IDEO ROM AREA YET?
GO SCAN FOR ANOTHER MODULE
BO 24
E6 80
MDV
OUT
AL ,24H
MFG_PORT ,AL
JMP
POST2
EI8B:
81
C2 0080
EI8C:
E9 0000 E
<> <><><><><><><><><><><>
<><> CHECKPOINT 24 <><>
GO TO NEXT TEST
CRT ERROR SET MFG CHECKPO I NT AND ERROR BEEP
E8 0000 E
E17:
CALL
C6
80
74
F6
74
BA
EB
06 00 15 R DC
3E 0072 R 64
00
06 0012 R 20
06
0102
0000 E
;
DDS
CHECKPOINT OC
POINT TO DATA
= MONOCHROME FAILED
MOV
CMP
JZ
TEST
JZ
MOV
CALL
'PMFG ERR FLAG, OCH
;
BYTE-PTR-.RESET FLAG,064H
EI9
PMFG TST ,MFG LOOP
E 19 DX,102H
ERR_BEEP
PUSH
OS
MDV
AND
CMP
AX ,IIIEQU I P FLAG
AL,30H
AL,30H
TRY_COLOR
<><> CRT ERROR CHECKPO I NT OC <><>
; IS THIS A MFG REQUEST?
BY PASS ERROR BEEP IF YES
I S THE MFG LOOP JUMPER INSTALLED?
BY PASS ERROR BEEP J F YES
GO BEEP SPEAKER
E19:
1E
AI 0010 R
24 30
3C 30
74 30
JZ
;-----
COLOR FAILED TRY MONOCHROME -
GET THE CURRENT V IDEO
STRIP OTHER BITS
I SIT MONOCHROME ?
GO 1F YES
CHECKPOINT 00
= COLOR
FAILED
C6 06 0015 R 00
MDV
OMFG _ERR _FLAG, ODH
<><> CRT ERROR CHECKPOINT
BA 03B8
90 01
EE
BB BODO
8E DB
B8 AA55
28 DB
69 07
EB 00
88 07
3D AA55
1F
75 55
81 DE 0010 R 0030
AI 0010 R
2A E4
CD 10
EB 34
MDV
MDV
OUT
MDV
MDV
MDV
SUB
MDV
JMP
MDV
CMP
PDP
DX,3B8H
AL,I
OX,AL
BX,OBOOOH
OS,BX
AX, OAA55H
BX,BX
[BX] .AX
DISABLE B/w
JNZ
EI7 3
IilIEQOIP FLAG,30H
AX,OEQUIP FLAG
AH,AH
INT VIDEO
SHORT E11_1
DR
MDV
SUB
INT
JMP
'.2
AX, [BX]
AX, OAA55H
OS
00 <><>
OUTPUT THE D I SABLE
CHECK FOR MONOCHROME V IDEO MEMORY
WR I TE AN AA55
TO THE FIRST LOCATION
ALLOW BUS TO SETTLE
READ THE FIRST LOCATION
I S THE MONOCHROME V IDEO CARD THERE?
RESTORE THE DATA SEGMENT
GO IF NOT
TURN ON MONOCHROME 8 I TS IN EQU I P FLAG
ENABLE V IDEO
CONTINUE
MONOCHROME FAIl.ED TRY COLOR
BO
2A
CD
BA
BO
EE
BB
8E
B8
2B
89
EB
88
3D
1F
75
81
81
BO
2A
CO
58
Al
24
3C
2A
74
01
E4
10
0308
00
B800
DB
AA55
DB
07
00
07
AA55
24
26 0010 R FFCF
OE 0010 R 0010
01
E4
10
0010 R
30
30
CO
02
TRY COLOR:
MOV
SUB
INT
MDV
MDV
OUT
MDV
MOV
MDV
SUB
MDV
JMP
MDV
eMP
PDP
JNZ
AND
DR
MDV
SUB
INT
PDP
MDV
AND
eMP
SUB
JZ
AL,OIH
AH,AH
INT VIDEO
DX,3D8H
AL,O
DX,AL
8X,OB800H
OS,BX
AX ,OAA55H
BX,BX
[BX] ,AX
'.2
AX. [BX]
AX ,OAA55H
OS
E17 3
IIIEQU 1P FLAG, OFFCFH
IIIEQU I P-FLAG, I OH
AL,OIHAH,AH
INT_VIDEO
AX
AX, olOEQU I P FLAG
AL,30H
AL ,30H
AL.AL
Ell_2
SET MODE COLOR 40X25
o I SABLE
COLOR
OUTPUT THE 0 I SABLE
CHECK FOR COLOR V IDEO MEMORY
WR I TE AN AA55
TO THE FIRST LOCATION
ALLOW 8US TO SETTLE
READ THE FIRST LOCATION
IS THE COLOR VIDEO CARD THERE?
RESTORE THE DATA SEGMENT
GO IF NOT
TURN OFF VIDEO 8ITS
SET COLOR 40X24
SET NEW V IDEO TYPE ON STACK
IS
IT THE B/W?
GO IF YES
TESTl
5-55
IBM Personal Computer MACRO Assembler
TEST I ---- 06/10/85
POWER ON SELF TEST
3023
3024
3025
30260
302,
3028
3029
3030
3031
3032
3033
3034
3035
3036
3031
3038
OCI I FE CO
OCI3
OCI3 50
OCI4
OCI4 E9 OB4A R
INC
; ----OC 11
OCI1
OC 18
OCIA
OC 1C
OC 1F
OC23
OC24
5-56
1E
2B
BE
BF
C1
1F
E9
CO
DB
0040 R
05 0000 E
OB4F R
TEST 1
Version 2.00
(POST)
1-29
06-10-85
;
PUSH
AX
JMP
EI8
INITIALIZE FOR 40X25
80TH VIDEO CARDS FAILED SET DUMMY RETURN
PUSH
SUB
MOV
MOV
MOV
POP
JMP
IF RETRACE FAILURE
OS
AX, AX
; SET OS SEGMENT TO 0
DS,AX
OJ ,OFFSET @VIOEO INT
; SET INTERRUPT 10H TO DUMMY
WORD PTR [OJ J ,OFFSET OUMMY RETURN
; RETURN IF NO VIDEO CARD
as
E18_1
-
;
BYPASS REST OF VIDEO TEST
IBM Personal Computer MACRO Assembler
TEST! ---- 06/10/85
POWER ON SELF TEST
3039
3040
3041
3042
3043
3044
3045
3046
3041
3048
3049
3050
3051
3052
3053
3054 OC21
3055 OC21
3056 OC29
3051
3058
3059
3060 OC2C
3061 OC2F
3062 OC30
3063 OC33
3064 OC35
3065 OC31
3066 OC3A
3061 OC3D
3068 OC30
3069 OC3E
3010 OC3F
3011
3012
3013
3014 OC41
3015 OC44
3016 OC41
3011 OC4A
3018 OC4A
30J9 OC4B
3080 OC4C
3081
3082
3083
3084
3085 OC4E
3086 OC4F
3081 OC50
3088 OC56
3089 OC5C
3090
3091
3092
3093 OC62
3094 OC64
3095 OC61
3096 OC69
3091
3098 OC6B
3099 OC6E
3100 OC10
3101 OC13
3102 OC15
3103 OC11
3104 OC18
31050C1B
3106 OC1B
3101 OC1D
3108 OC1F
3109 OC81
3110 OC83
3[ I I OC84
31 12 OC86
3113
3114 OC88
3115
31 16 OC8D
31 11 OC8D
31 18 OC8F
3119 OC91
3120
3121 OC93
3122 OC95
3123
3124 OC96
3125 OC96
3126
1-30
06- I 0-65
Version 2.00
(POST)
PAGE
;
- - - - -- - - - - - - - -- - - - - - - - - - - - - - -- - - - - - - - - - - MANUFACTURING BOOT TEST CODE ROUTINE
;
LOAD A BLOCK OF TEST CODE THROUGH THE KEYBOARD PORT FOR MANUFACTURING
;
TESTS.
;
THIS ROUTINE WILL LOAD A TEST (MAX LENGTH=FAFFH) THROUGH THE KEYBOARD
;
PORT. CODE WILL BE LOADED AT LOCATION
0000l0500.
AFTER LOADING,
;
CONTROL WILL BE TRANSFERRED TO LOCATION
0000:0500.
THE STACK WILL
BE LOCATED AT 0000:0400.
THIS ROUTINE ASSUMES THAT THE FIRST 2 BYTES
TRANSFERRED CONTAIN THE COUNT OF BYTES TO BE LOADED
;
(BYTE 1 =COUNT LOW, BYTE 2=COUNT HI.J
-- --- -- - -- - - -- -- -- --- --
;----B4 00
E8 0000 E
- - -- --- - - - --
DEGATE ADDRESS LINE 20
MFG BOOTl
MOV
CALL
AH,DISABLE BIT20
GATE_A20
-
;
;
DEGATE COMMAND FOR ADDRESS LINE 20
I SSUE TO KEYBOARD ADAPTER' AND CLI
SETUP HARDWARE INTERRUPT VECTOR TABLE LEVEL 0-1 AND SOFTWARE INTERRUPTS
68
01
B9
8C
8E
BE
BF
---- R
PUSH
SET ES SEGMENT REG I STER TO ABSO
POP
"Oy
"Oy
MOV
"Oy
"Oy
ABSO
ES
0018
C8
08
0000 E
0020 R
CX,24
AX,CS
DS,AX
51 ,OFFSET VECTOR TABLE
01 ,OFFSET IlIINT_PTR
GET VECTOR COUNT
GET THE CURRENT CODE SEGMENT VALUE
SETUP OS SEPMENT REG I STER TO
POINT TO THE ROUTINE ADDRESS TABLE
SET DESTINATION TO FIRST USED VECTOR
A5
AB
E2 FC
MOVSW
STOSW
LOOP
MFG_Bl
MOVE ONE ROUTINE OFFSET ADDRESS
INSERT CODE SEGMENT VALUE
MOVE THE NUMBER OF ENTR I ES REQU I RED
B9 0008
BE 0000 E
BF OICO R
"Oy
"Oy
"Oy
CX,08
; GET VECTOR COUNT
51 iOFFSET SLAVE VECTOR TABLE
01 ,OFFSET IlISLAVE_INT_PTR
A5
AB
E2 FC
MOVSW
STOSW
LOOP
MFG_B2
SETUP HARDWARE
;----06
IF
C1 06 0008 R 0000 E
C1 06 00 14 R 0000 E
C1 06 0062 R F600
; -----
INTERRUPT VECTORS LEVEL 8-15
(VECTORS START AT
INT 10 HI
; MOVE ONE ROUTINE OFFSET ADDRESS
; INSERT CODE SEGMENT VALUE
SET UP OTHER INTERRUPTS AS NECESSARY
ASSUME
PUSH
OS: ASSO .ES; ABSO
POP
"Oy
"Oy
"Oy
OS
ES
ES= ABSO
TO ABSO
SET
Nt.! I INTERRUPT
PR I NT SCREEN
CASSETTE BAS I C SEGMENT
as
WORD PTR II!INMI PTR,OFFSET NMI INT
WORD PTR OINTS PTR,OFFSET PRTNT SCREEN
WORD PTR PBASIC_PTR+2,OF600H
-
ENABLE KEYBOARD PORT
BO
E8
BO
E6
60
0396 R
09
60
"OY
CALL
"OY
OUT
AL,60H
C8042
AL,00001001B
PORT_A,AL
WR I TE 6042 MEMORY LOCAT I ON 0
ISSUE THE COMMAND
SET INHIBIT OVERRIDE/ENABLE OBF
INTERRUPT AND NOT PC COMPATIBLE
E8
8A
j::8
8A
8A
FC
BF
OC8D R
F8
OC8D R
E8
CF
CALL
"OY
CALL
"OY
"OY
CLD
"OY
MFG B4
BH,AL
MFG B4
CH,AL
CL,BH
GET COUNT LOW
SAVE IT
GET COUNT HI
E4
A8
14
E4
AA
E6
E2
64
01
FA
60
IN
TEST
JZ
AL,STATUS PORT
At-, OUT BUF FULL
MFG B3AL,PORT_A
80
F3
STOSB
OUT
LOOP
MFG PORT ,AL
MFG=B3
GET 8042 STATUS PORT
KEYBOARD REQUEST PENDING?
LOOP TILL DATA PRESENT
GET DATA
STORE IT
DjSPLAY CHARACTER AT MFG PORT
LOOP TI LL ALL BYTES READ
J"P
II!IMFG_TEST_RTN
FAR JUMP TO CODE THAT WAS JWST LOADED
~t: ~~~ T~GFP~~~L
CHECK FOR OUTPUT BUFFER FULL
HANG HERE IF NO DATA AVAILABLE
0500 R
EA 0500
IN
---- R
E4 64
A8 01
EI FA
IN
E4 60
C3
ex
01 ,OFFSET 0 FLAGS ERROR
I
CLEAR
(BP)
REG' STER AS ERROR FLAG REG
I NTERRUPT MASK REG I STER REG I STERS
eLi
00
21
A\
00
21
EO
AI
0010 BO 25
00 IF E6 80
BP,BP
;
I SET DATA SEGMENT
AL,O
INTAOI,AL
INTSOI,AL
TURN OFF INTERRUPTS
SET INTERRUPT MASK REGISTER TO ZERO
SEND 10 2ND
I NTERRUPT CONTROLLER ALSO
J"F
1·2
IN
"OY
IN
AL,INTAOI
AH,AL
AL,INTBOI
READ I NTERRUPT MASK REG! STER
SAVE RESULTS
READ 2ND I NTERRUPT MASK REGI STER
OR
JNZ
AH,AL
06
BOTH '"R
O?
GO TO ERR ROUTI NE
"OY
OUT
AL,25H
"FG _PORT, AL
.
IF NOT 0
<> <><> <><> <><><><> <> <><>
<><> CHECKPOINT 25 <><>
IBM Personal Comput.er MACRO Assembler
VersIon 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
115
116
117
118
[[9
120
121
122
0021 BO FF
00 23E62[
0025 E6 A[
0027 E8 00
0029 E4 2[
0028 8A EO
0020 E4 AI
123
[24
125
002F 05 000 [
0032 75 15
1-2
06-10-85
MOY
OUT
OUT
JMP
IN
MaY
IN
"2
AL, [NTAOI
AH,AL
AL,INTBOI
01 SA8LE OEV I CE INTERRUPTS
WR J TE TO I NTERRUPT MASK REG [STER
WRITE TO 2ND INTERRUPT MASK REGISTER
110 DELAY
READ I NTERRUPT MASK REG [STER
SAVE RESULTS
READ 2ND I NTERRUPT MASK REG I STER
AOO
JNZ
AX,I
06
ALL lMR B[TS ON?
NO - GO TO ERR ROUT! NE
AL,OFFH
INTAOI,AL
INTBO I ,AL
12.
127
128
129
CHECK FOR HOT
1NTERRUPTS
1NTERRUPTS ARE MASKED OFF.
CHECK THAT NO I NTERRUPTS OCCUR.
130
131
132
133
134
135
13.
137
138
139
140
141
142
143
144
145
14.
147
148
149
150
151
152
153
154
155
15.
157
158
159
,.,
160
,.2
,.3
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
17'
180
181
182
183
184
[85
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
20 [
202
203
204
205
206
207
208
209
0034 A2 0068 R
MaY
<> <> <> <> <> <> <> <> <> <> <>
<><> CHECK PO I NT
26 <><>
ENABLE EXTERNAL INTERRUPTS
WAIT 100 MILLISECONDS FOR ANY
INTERRUPTS THAT OCCUR
OJ 0 ANY 1 NTERRUPTS OCCUR?
NO - GO TO NEXT TEST
<><><><><><><><> <><><><>
<><> CHECKPO[NT
5 <><>
OJ SPLAY
101
ERROR
CHECK THE CONVERT I NG LOG I C
0056 80 27
0058 E6 80
005A
0050
OOSF
006 [
0063
0065
0068
88
E7
E4
86
E4
30
74
07:
AA55
82
82
C4
83
55AA
05
;----80
E6
89
E8
80
E6
80
74
AL,27H
MFG _PORT, AL
MaY
OUT
IN
XCHG
IN
eMP
AX,OAA55H
MFG_PORT+2,AX
AL,MFG_PORT+2
AL,AH
AL,MFG_PORT+3
AX,55AAH
07 A
MaY
JMP
SI ,OFFSET EI06
06A
<> <> <> <> <> <> <> <> <><> <> <>
27 <><>
<><> CHECKPOINT
WRITE A WORD
GET THE FIRST BYTE
SAVE IT
GET THE SECOND BYTE
IS [T OK?
GO IF YES
-
006A 8E 0000 E
0060 E8 E2
006F
006F
0071
0073
0076
0079
0078
0070
0082
MaY
OUT
00
70
0007
0000 E
80
70
3E 0068 R 00
09
CHECK FOR HOT NMI
01 SPLAY
INTERRUPTS WITHOUT
MaY
OUT
MaY
CALL
MaY
OUT
eMP
JZ
AL, CMOS REG 0
CMOS_PORT, AL
CX,7
WAITF
AL ,CMOS REG D+NM I
CMOS_PORT ,AL
rtlINTR_FLAG,OOH
07 e
0084 80 28
0086 E6 80
MaY
OUT
AL ,28H
MFG_PORT. AL
0088 BE 0000 E
008B E8 C4
MaY
JMP
SI,OFFSET El07
06A
106 ERROR
I/o-MEMORY PARITY ENABLED
TURN ON NM [
ADDRESS DEF AUL TREAD ONLY REG I STER
DELAY COUNT FOR 100 MICROSECONDS
WA [T FOR HOT NM [ TO PROCESS
TURN NM I ENABLE BACK OFF
DID ANY INTERRUPTS OCCUR?
CONT I NUE [F NOT
-
<> <><> <> <> <> <> <><><><> <>
<><> CHECKPOINT
28 <><>
D[SPLAY
107 ERROR
TEST THE DATA BUS TO T[MER 2
0080
008F
0091
0093
0095
0097
80 29
E6 80
E461
8A EO
24 FC
E6 61
0099
009B
0090
009F
00A2
00A4
OOA6
00A8
OOAA
COAC
OOAE
OOBO
0082
00B4
00B7
BO
E6
EB
B8
E6
EB
8A
E6
EB
E4
86
EB
E4
3D
74
07 e,
-
80
43
00
AA55
42
00
C4
42
00
42
EO
00
42
55AA
05
00B9 BE 0000 E
OOBC EB 93
MOY
OUT
IN
MaY
AND
OUT
AL,29H
MFG PORT, AL
AL,PORT_B
AH,AL
AL,OFCH
PORT_B,AL
MaY
OUT
JMP
MaY
OUT
JMP
MOY
OUT
JMP
IN
XCHG
JMP
IN
eMP
JZ
AL,IOIIOOOOB
TIMER+3,AL
MaY
JMP
<><> <><><> <> <> <> <> <> <> <>
<><> CHECKPOINT
29 <><>
GET CURRENT SETT I NG OF PORT
SAVE THAT SETTING
I NSURE SPEAKER OFF
SELECT TIM 2, LSB, MSB, B I NARY, MODE 0
WR I TE THE T I MER MODE REG [STER
I/O DELAY
WR I TE AN AA55
WR ITE T I MER 2 COUNT - L SB
110 DELAY
,'2
AX,OAA55H
TIMER+2,AL
'.2
AL,AH
T[MER+2,AL
'.2
WRITE TIMER 2 COUNT 1/0 DELAY
GET THE LSB
SAVE IT
[/0 DELAY
GET THE MSB
BUS OK?
GO [F OK
S [,OFFSET EI08
06A
DISPLAY
AL, TIMER+2
AH,AL
"2
AL,TIMER+2
AX,055AAH
07 a
-
MSB
108 ERROR
210
211
212
TEST.18
8254 T I MER CHECKOUT
DESCR I PT I ON
VERIFY THAT THE SYSTEM TIMER
TOO FAST OR TOO SLOW.
213
214
215
21.
217
(0)
DOESN'T COUNT
218
219
220
221
222
223
224
225
226
OOBE
OOCO
00C2
00C3
OOC5
OOC7
00C9
OOCB
BO
E6
FA
BO
E6
2A
80
FE
21
BO 10
E6 43
B9 002C
07 D,
-
MOV
OUT
eLi
MDY
OU7
MaY
OUT
MaY
AL,2AH
MFG_PORT, AL
AL,OFEH
INTAO[ ,AL
AL,OOOlOOO08
TIMER+3,AL
CX,2CH
MASK ALL [NTERRUPTS EXCEPT LEVEL 0
WR ITE THE 8259 IMR
SELECT TIM 0, LSB, MODE 0, BINARY
WRITE T[MER CONTROL MODE REG I STER
SET PROGRAM LOOP COUNT
JMP
$.2
[/0 DELAY
<> <> <> <> <> <> <> <> <><> <> <>
<><> CHECKPOINT
2A <><>
227
228
OOCE EB 00
TEST2
5-59
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/65
POST TESTS AND INITIALIZATION ROUTINES
229
230
231
232
0000
0002
0004
0005
6A Cl
E6 40
FB
F6 06 006B R 01
MOV
OUT
SET TIMER 0 COUNT REGISTER
WR I TE T I MER 0 COUNT REG I STER
AL,CL
TlMER+O,AL
511
08:
1-3
06-10-85
TEST
01 NTR_FLAG, a I H
JNZ
LOOP.
DB
MOV
(lMFG_ERR_FLAG.02H
233
234
235
OOOA 75 00
OpOC E2 F7
23.
237
OOOE C6 06 0015
23B
239
240
241
00E3 BE 0000 E
242
00E6 E9 0051 R
243
244
245
00E9 BO 2B
246
OOEB E6 80
241
248
OOEO FA
249
OOEE BlOC
250
OOFO BO FF
251
00F2 E6 40
252
00F4 C6 06 006B
253
00F9 BO FE
254
dOFB E6 21
255
OOFO FB
256
OOFE F6 06 006B
257
0103 75 DE
258
0105 E2 F7
259
2.0
2.1
262
0107 2B C9
2.3
264
0 I 09 BO 2C
265
01 OB E6 80
266
0100
267
0100 F6 06 006B
268
0112 15 08
269
0 I 14 E2 F1
210
2710116BEOOOOE
212
0119 E9 0051 R
213
214
215
27601lCFA
277
OliO BO FF
27801lFE621
279
0121 BO 36
280
0123 E6 43
281
0125 EB 00
282
0127 BO 00
263
0 j 29 E6 40
284
012B EB 00
285
0120 E6 40
2B.
R 02
SI,OFFSET EI02
O.A
09:
29.
291
29B
299
300
30 I
302
303
304
305
30.
MOV
OUT
<><> <> <><><> <> <> <> <> <> <> <> <> <>
<><> T I MER CHECKPO I NT ( 2) <><>
01 SPLA Y 102 ERROR
TIMER 0 INTERRUPT DID NOT OCCUR= ERROR
<> <> <><><><> <> <> <> <> <> <>
<><> CHECKPOINT
2B <><>
AL,2BH
MFG_PORT ,AL
eLi
R 00
R 01
DID:
MOV
MOV
OUT
"OV
"OV
OUT
CL,12
AL,OFFH
TIMER+O,AL
olNTR FLAG,O
AL,OFEH
INTAOI,AL
511
TEST
JNZ
LOOP
OINTR FLAG,OIH
08 A 01'0
WAIT FOR
SET PROGRAM LOOP COUNT
WR I TE T I MER a COUNT REG I STER
RESET INTERRUPT RECE I VED FLAG
RE-ENABLE T I MER a INTERRUPTS
DID TIMER a INTERRUPT OCCUR?
YES - TIMER COUNTING TOO FAST, ERROR
WA I T FOR I NTERRUPT FOR SPEC I F I ED T I ME
INTERRUPT
SUB
CX,CX
"OV
OUT
AL,2CH
MFG_PORT ,AL
TEST
JNZ
LOOP
(I]NTR _FLAG,O IH
OliO
DID TIMER 0
GO IF YES
TRY AGAIN
MOV
J"P
S I ,OFFSET EI03
O.A
DISPLAY 103 ERROR
ERROR IF NOT
<><><> <> <> <> <> <> <> <> <><>
<><> CHECKPOINT
2C <><>
011 0:
R 01
012
; -----
SETUP TIMER 0 TO MODE 3
012:
eLI
"OV
OUT
"OV
OUT
JMP
MOV
OUT
JMP
OUT
2.,
2BB
289
290
291
292
293
294
295
DID TI MER 0 I NTERRUPT OCCUR?
CHECK TIMER OPERATION FOR SLOW TIME
WAIT FOR INTERRUPT FOR SPECIFIED TIME
09
INTERRUPT OCCUR?
D I SABLE ALL DEV I CE
AL,OFFH
INTA01,AL
AL,36H
TIMER+3,AL
INTERRUPTS
$.2
SELECT TIMER O,LSB,MSB,MODE 3
WR I TE T I MER MODE REG I STER
1'/0 DELAY
AL,O
TIMER+O,AL
$<2
TlMER+O,AL
WRITE LSB TO TIMER 0 REGISTER
1/0 DELAY
WRITE MSB TO TIMER a REGISTER
8042 FOR LAST COMMAND ACCEPTED
012F
0131
0133
0135
0137
0139
a 13B
2B
80
E6
E4
A8
74
E2
C9
20
80
64
02
08
F8
SUB
MOV
OUT
013:
IN
TEST
JZ
LOOP
CX,CX
AL,20H
MFG PORT ,AL
AL,STATUS PORT
AL, I NPT BUF FULL
EI9
-
013
ERROR EXIT
0130 BE 0000 E
0140 E9 0051 R
"OV
JMP
;
;
301
30B
309
(MESSAGE
SET WAIT TIME
<> <><> <><><><> <> <> <> <> <>
<><> CHECKPOINT
20 <><>
GET THE 8042 STATUS
HAS THE LAST COMMAND BEEN ACCEPTED?
GO IF YES
TRY AGAIN
105)
S I ,OFFSET E I 05
D.A
PRINT lOS ERROR
GO ERROR HALT
- - - - -- - - - - - - - -- - - - - - - - - -- - - - - - - - - - - - - - - - - - - -- - -- - - - - -- - - - - - - -- - -- - -- - - -TEST.19
ADD I TJ ONAL READ/ WR iTE STORAGE TEST
++++ MUST RUN IN PROTECTED MODE ++++
OESCR I PT I ON
WRITE/READ DATA PATTERNS TO ANY READ/WRITE STORAGE AFTER THE
FIRST 64K.
STORAGE ADDRESSAB I LI TY I S CHECKED.
310
311
312
313
314
315
31.
317
318
319
320
321
322
323
324
325
326
327
32B
329
330
331
332
333
334
335
33.
337
338
339
340
341
342
0143
0143 E8 0000 E
0146 BO 2F
0148 E6 80
ASSUME
OS:DATA
CALL
MOV
OUT
ODS
AL,2FH
MFG_PORT ,AL
SET DA T A SEGMENT
eMP
JNE
JMP
ORE SET FLAG,! 234H
EI9A
SHUT2
WARM START?
GO IF NOT
GO TO NEXT TEST IF WARM START
E19:
014A 81 3E 0072 R 1234
0150 15 03
0152 £9 0420 R
<> <> <> <> <> <><> <> <> <> <><>
<><> CHECKPOINT
2F <><>
SET SHUTDOWN RETURN 2
0155 BO 30
0157 E6 80
0 I 59 B8 028F
OISC E8 0000 E
EI9A:
MOV
OUT
AL ,30H
MFG_PORT ,AL
MOV
CALL
AX.2-H+CMOS SHUT DOWN+NMI
CMOS_WR I TE -
<><> <><><> <> <><><><><> <>
<><> CHECKPO I NT
30 <><>
; ADDRESS FOR SHUTDOWN BYTE
SECOND ENTRY I N SHUTDOWN TABLE
ENABLE PROTECTED MODE
01 SF BC 0000
8E 04
0164 BC 8000
a I 62
MOV
MOV
MOV
SP,POST SS
SS, SP
SP.POST_SP
SET STACK FOR SYSINITI
GO ENABLE PROTECTED MODE
0167 E8 0000 E
CALL
SYSINITI
016A BO 31
0 !6C E6 80
MOV
DUT
AL,31H
MFG_PORT,AL
SET TEMPOMRY STACK
a I 6E
5-60
6A 08
TEST2
PUSH
BYTE PTR GOT _PTR
<> <><><> <> <> <><><> <> <> <>
<><> CHECKPOINT
31 <><>
1-4
06-10-85
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
0 I 70
Ot71
0178
0 I 7E
0181
0 I 83
07
26: C7 06 005A 0000
26: C6 06 005C 00
BE 0058
8E 06
BC FFFD
POP
MOV
MOV
MOV
MOV
MOV
ES
ES: SS TEMP. 8ASE LO WORD, 0
BYTE PTR ES: ISS-TEMP. BASE H I BYTE), 0
S [ ,SS TEMP
SS,S[SP, MAX_SEG_LEN-2
DATA SEGMENT TO SYSTEM DATA AREA
0186 6A
0188 IF
18
0189 BO 80
018B E6 87
PUSH
POP
8YTE PTR RSDA PTR
MOV
OUT
AL,PARITY CHECK
DMA_PAGE+6,AL
OS
POINT TO DATA AREA
SET CHECK PAR[TY
SAVE WHICH CHECK TO USE
PR I NT 64 K BYTES OK
0180 88 0040
0190 E8 099F R
STARTING AMOUNT OF MEMORY OK
POST 65K OK MESSAGE
"OV
CALL
362
363
GET THE MEMORY 5 I ZE DETERM I NED
(PREPARE 8X AND OX FOR BAD CMOS)
364
MOV
CALL
XCHG
CALL
MOV
MOV
ADD
8081
0000 E
EO
0000 E
IE 0013 R
03
08
AX, (CMOS U M S LO+NMI) ·H+CMOS U M 5 HI+NMI
CMOS READ - - HIGH BYTEAH,AL
SAVE HIGH 8YTE
CMOS READ
LOW 8YTE
8X,@MEMORY SIZE
LOAD THE BASE MEMORY SIZE
DX,8X
SAVE BASE MEMORY SIZE
BX, AX
SET TOTAL MEMORY SIZE
365
366
367
368
369
370
371
0193 B8
0196 E8
019986
0198 E8
019E 88
0lA2 88
0lA4 03
372
373
374
375
376
0lA6 80 8E
0lA8 E8 0000 E
"OV
CALL
AL,CMOS D[AG+NMI
CMOS_READ
OETERM I NE THE COND I T I ON OF CMOS
GET THE CMOS STATUS
OIAB A8 CO
DIAD 74 02
0 I AF EB 58
TEST
JZ
JMP
AL,8AD BAT+BAO CKSUM
E2D80 SHORT E20C
CMOS OK?
GO IF YES
DEF AUL T I F NOT
I S CMOS GOOD?
377
378
379
380
381
382
383
384
385
386
387
388
389
390
GET THE BASE 0->640K MEMORY SIZE FROM CONFIGURATION
0181
0181
0184
0187
0189
0188
018E
OICO
889596
E8 0000 E
24 3F
86 EO
E8 0000 E
3B DO
74 13
MOV
CALL
50
B8
E8
DC
86
E8
58
38
PUSH
MOV
CALL
AND
XCHG
CALL
eMP
JZ
391
392
393
394
395
396
397
398
399
400
40 I
402
403
404
405
IN CMOS
AX,(CMOS B M S LO+NMI)·H+CMOS B M S HI+NMI
CMOS READ - - H[GH BYTe
AL,03FH
MASK OFF THE MANUFACTURING TEST BITS
~~O~L READ
;
;
;
DX,AX
E20BI
~~~E B~~~H O~Y~~SE
MEMORY SIZE
IS MEMORY SIZE GREATER THAN CONFIG?
GO IF EQUAL
SET MEMORY SIZE DETERM I NE NOT EQUAL TO CONF I GURA T I ON
0lC2
0 I C3
0lC6
0lC9
0lC8
OICO
DIDO
0I0I
0103
0105
0105
0107
8E8E
0000 E
10
C4
0000 E
DO
TT 37
AX
XCHG
CALL
POP
eMP
JA
DX,AX
E20C
SAVE AX
ADDRESS THE STATUS BYTE
GET THE STATUS
SET CMOS FLAG
SAVE AL AND GET ADDRESS
WRITE UPDATED STATUS
RESTORE AX
[S MEMORY SIZE GREATER THAN CONF [G
DEFAULT TO MEMORY SIZE DETERMINED 7
MOV
MOV
BX,AX
DX,AX
SET 8ASE MEMORY SIZE IN TOTAL REGISTER
SAVE IN BASE SIZE REG[STER
OR
AX,X· (CMOS DIAG+NMI)
CMOS READ AL,W-MEM SIZE
AL,AH
CMOS WR ITE
AX
-
7
E20BI:
8808
88 DO
406
407
408
409
010988 9798
410
OIDC E8 0000 E
411
OIDF 86 EO
412
OIEI E8 0000 E
413
0lE4 88 C8
414
415
416
0lE6 88 8081
4170lE9E80000E
418
OIEC 86 EO
419
OIEE E8 0000 E
420
421
CHECK MEMORY SIZE ABOVE 640K FROM CONF[GURATION
MOV
AX, (CMOS EMS LO+NMI ~ -H+ (CMOS EMS HI +NMI ~
CALL
CMOS READ - - ; HIGH-BYTE XCHG
AH,AL
; SAVE HIGH BYTE
CALL
CMOS READ
; LOW BYTE
MDV
CX,AX
; SAVE THE ABOVE 640K MEMORY SIZE
ABOVE 640K SIZE FROM MEMORY SIZE DETERMINE
CX=CONFIG
AX=MEMORY SIZE DETERMINE
MOV
AX, (CMOS U M 5 LO+NMI) ·H+ (CMOS U M 5 HI +NMI)
CALL
CMOS READ - - ; HIGH-BYTE XCHG
AH,AL
; SAVE HIGH 8YTE
CALL
CMOS READ
; LOW BYTE
WH [CH IS GREATER - AX = MEMORY 5 [ZE DETERM I NE
-- CX = CONFIGURATION (ABOVE 640) BX = SIZE (BELOW 640)
422
423
424
425
426
427
428
429
430
431
432
433
434
0 I F I 38 C8
0lF3 74 OF
CMP
JZ
0lF5
01 F6
0lF9
OIFC
OIFE
0200
0203
PUSH
MOV
CALL
;
:
IS CONFIGURATION EQUAL TO DETERMINED?
GO I F EQUAL
SET MEMORY SIZE DETERMINE NOT EQUAL TO CONFIGURATION
50
88
E8
DC
86
E8
58
8E8E
0000 E
10
C4
0000 E
OR
XCHG
CALL
POP
AX,X· (CMOS DIAG+NMI
CMOS READ AL,W-MEM SIZE
AL, AH
CMOS WR I TE
AX
~
-
SAVE AX
ADDRESS THE STATUS BYTE
GET THE STATUS
SET CMOS FLAG
SAVE AL
UPDATE STATUS BYTE
RESTORE AX
435
436
437
438
439
440
441
442
443
444
0204
0204
0206
0208
020A
020A
020C
020C
0210
445
446
447
448
449
450
451
452
453
454
455
456
0212
0215
0218
021 A
021C
021F
021F
0223
0226
0227
38 C8
TT 02
88 C8
03 09
81 FA 0201
72 00
88
E8
OC
86
E8
8383
0000 E
80
C4
0000 E
SETMEMI:
CMP
JA
MOV
SET MEM:
ADD
E20C:
eMP
CX,AX
SET MEM
Cx,AX
IS CONFIG GREATER THAN DETERMINED?
GO IF YES
USE MEMORY 5 [ZE DETERM I NE
SET TOTAL MEMORY SIZE
8X,CX
CHECK IF BASE MEMORY LESS 512K
GO IF YES
J8
MOV
CALL
OR
XCHG
CALL
89 IE 0017 R
C I E8 06
MOV
SHR
48
C I EA 06
DEC
SHR
AX,X·(CMOS
CMOS READ
AL,M640K
AL,AH
CMOS_WRITE
[NFOI28+NMI)
WORD PTR @KB FLAG, BX
BX,6
8X
DX,6
SET 640K BASE MEMORY BIT
GET THE CURRENT STATUS
TURN ON 640K BIT I F NOT ALREADY ON
SAVE THE CURRENT DIAGNOST[C STATUS
RESTORE THE STATUS
SAVE TOTAL 5 I ZE FOR LATER TEST I NG
DIVIDE BY 64
1ST 64K ALREADY DONE
DIVIDE BY 64 FOR BASE
TEST2
5-61
IBM Persona I Computer MACRO Assemb I er
Vers i on 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
457
456
459
460
461
462
463
464
465
466
461
466
469
410
471
412
473
414
475
476
471
476
479
460
481
482
483
484
465
46.
467
488
489
490
491
492
493
494
495
49.
491
498
499
500
501
502
503
504
505
506
507
508
509
510
~: ~
513
514
515
516
517
518
519
520
521
522
523
524
525
52.
527
528
529
530
531
532
533
534
535
53.
537
536
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
551
558
559
5'0
SAVE COUNTS IN STACK FOR BOTH MEMORY AND ADDRESSING TESTS
ox
022A 52
022B 6A 40
0220 53
PUSH
PUSH
PUSH
BYTE PTR 64
022E 52
022F 6A 40
0231 53
PUSH
PUSH
PUSH
BYTE PTR 64
;----0232 6A 08
0234 01
POP
;-----
SAVE BASE MEMORY SIZE COUNT
SAVE STARTING AMOUNT OF MEMORY OK
SAVE COUNT OF 64K BLOCKS TO BE TESTED
OX
BX
BYTE PTR GOT PTR
E5
MOD I FY THE OESCR I PTOR TABLE
-
SET TEMPORARY ES DESCRIPTOR 64K SEGMENT LIMIT STARTING AT 000000
0235
023C
0243
0249
26:
26:
26;
26:
C1
C7
C6
C6
06
06
06
06
0048
004A
004C
0040
FFFF
0000
00
93
MOV
MOV
MOV
MOV
024F
0256
0250
0263
26
26
26
26
C1
C1
C6
C6
06
06
06
06
0060
0062
0064
0065
FFFF
0000
00
93
MOV
MOV
MOV
MOV
0269
026B
0260
026F
0211
2A
E6
E6
FE
E6
ES: ES TEMP. SEG LI MIT, MAX SEG LEN
ES:ES-TEMP.BAsE La WORD,O
BYTE PTR ES: (ES-TEMP.BASE HI BYTEI,O
; FIRST 65K
BYTE PTR ES: (ES::::TEMP.DATA::::ACC_RIGHTS) ,CPLO_DATA_ACCESS
SET TEMPORARY OS DESCRIPTOR 64K SEGMENT LIMIT AT FIRST 65K 8LOCK
~~: g~-i~~~: ~~~EL ~~ I ~O~~~OSEG_LEN
BYTE PTR ESI lOS-TEMP.BASE HI BYTEI,O
BYTE PTR ES: lOS::::TEMP.DATA::::ACC_RIGHTS) ,CPLO_DATA_ACCESS
TEMPORARY SEGMENT SAVE IN DMA PAGE REGI STER FOR SECOND 65K BLOCK
CO
85
86
CO
84
SUB
OUT
OUT
; ----0273
0213 6A 08
0215 IF
0276 FE 06 0064
021A FE 06 004C
INC
AL -
OUT
DMA_PAGE+3,AL
MEMORY TEST LOOP -
E21:
PUSH
POP
I NC
INC
; -----
AL,AL
DMA PAGE+4, AL
DMA-PAGE+5.AL
INITIALIZE VALUES TO 010000
HIGH BYTE OF LOW WORD OF SEGMENT
LOW BYTE OF LOW WORD OF SEGMENT
SET HIGH BYTE OF SEGMENT WORD
HIGH BYTE OF SEGMENT
PO I NT TO NEXT BLOCK OF 32K WORDS
(64K)
;
MEMORY TEST LOOP
BYTE PTR GOT PTR
; PO I NT TO START OF DESCR I PTOR TABLE
OS
BYTE PTR OS: (OS TEMP. BASE H I BYTE I
; PO I NT TO NEXT BLOCK
8YTE PTR OS: (ES::TEMP. BASE::::H I::::BYTE)
CHECK FOR END OF 256K PLANAR MEMORY
021E 80 3E 0064 04
0283 12 04
CMP
..JB
8YTE PTR OS: (OS TEMP. BASE H I BYTE), 04H
E21_0
i-GO-IF STILL FIRST 256K OF BASE MEMORY
0285 BO CO
0281 E6 81
MOV
OUT
AL. PAR I TY CHECK+ 10 CHECK;
DMA_PAGE+6.AL
;
0289
0289 80 3E 0064 OA
028E 17 16
~~~~~~
;-----
0290
0291
0292
0293
0294
0295
0296
029A
59
5B
58
50
53
51
38 06 0064
12 OA
CMP
..JA
029C C6 06 0064 10
02A 1 C6 06 004C 10
BYTE PTR OS: (OS TEMP.BASE HI BYTE) ,OAH
NEXT
;-CONTINUE IF ABOVE
PUSH
PUSH
PUSH
CX
BX
AX
AX
BX
CX
1 MEG
GET COUNT
GET COUNT TESTED
RECOVER COUNT OF BASE MEMORY BLOCKS
SAVE BASE COUNT
SAVE TESTED COUNT
; SAVE TOTAL COUNT
CMP
JB
~~~~
PTR OS:
{DS_TEMP.BAS7_~6N~i~~~·~~
00 ADDITIONAL STORAGE ABOVE
I
NOT DONE
W;T~A~A~~S~E~g~~T
MEG
MOV
MOV
;-----
SAVE BASE_Hi_BYTE iN DMA PAGE REGISTERS 3
NEXT:
MOV
OUT
~~AB~!~E~~~A~S; {DS_TEMP.~A;~V~IT~~T~:GH
-
CHECK FOR TOP OF MEMORY
02AB 80 3E 004C FE
0280 74 29
;
(FEOOOO)
BYTE OF SEGMENT
FOR POSS I BLE ERROR
16 MEG
TOP OF MEMORY?
EX I T NEXT TEST
CMP
JE
; ----0282
0284
02B5
0281
CHECK FOR ANY TYPE OF PAR I TY ERROR
AFTER FIRST 256K
(END OF MAXIMUM BASE MEMORY)
CHECK FOR END OF BASE MEMORY TO BE TESTED
POP
POP
POP
; -----
02A6 AO 0064
02A9 E6 84
CHECK END OF FIRST 640K OR ABOVE
6A 60
IF
6A 48
01
SET ES AND OS REG I STERS TO MEMORY BLOCK
PUSH
POP
BYTE PTR OS_TEMP
OS
PUSH
BYTE PTR ES_ TEMP
POP
ES
02B8 BO 3 I
02BA E6 80
MOV
OUT
AL,31H
MFG_PORT ,AL
02BC
02BF
02C2
02C4
02C1
02C1
02C8
MOV
SET COUNT FOR 32K WORDS
CALL
CX,8000H
STGTST_CNT
JZ
JMP
N1
E21A
SKIP IF OK
GO PR I NT ERROR
POP
POP
CX
AX
B9
E8
74
E9
8000
0000 E
03
0361 R
<><> <> <> <><><><> <> <> <> <>
<><> CHECKPO I NT 31
NI:
59
58
WRITE THE CURRENT SIZE FOR
PDP CX TO GET AX
RECOVER TESTED MEMORY
(ADDRESS LINE 23-11 TEST)
USED LATER
02C9 2B FF
02CB AB
SUB
STOSW
DI,DJ
02CC 05 0040
02CF 50
0200 51
ADD
PUSH
PUSH
AX,64
AX
CX
POINT TO BEGINNING OR A BLOCK
WR I TE THE CURRENT SIZE
AT THE STARTING ADDRESS
ADVANCE COUNT TO NEXT BLOCK
SAVE TESTED MEMORY
SAVE LOOP COUNT
0201
CALL
PRT_OK
OJ SPLAY
5.5
566
561
568
5.9
570
SAVE BASE MEMORY SIZE COUNT
SAVE STARTING AMOUNT OF MEMORY OK
SAVE COUNT OF 64K BLOCKS TO BE TESTED
BX
MODJFY DESCRIPTOR TABLES
PUSH
561
5.2
563
564
1-5
06-10-85
5-62
E8 099F R
TEST2
"OXXXX OK ~
MESSAGE
I F DONE
,-.
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10185
POST TESTS AND INITIALIZATION ROUTINES
511
572
573
57.
575
576
577
578
579
580
58'
582
583
58'
585
586
587
588
589
590
59'
592
593
59.
595
596
597
598
599
600
601
602
603
0204 59
0205 49
0206 E3 03
POP
0208 51
0209 EB 98
PUSH
ex
J"P
E2'
60'
02FO
02FO BO 33
02FF E6 80
0301 26: 80 06 0064 01
60S
606
607
608
609
610
6"
6'2
020B
020B 58
020C 58
DEC
JCXZ
K8 LOOP3:
POP
POP
06- \ 0-85
RECOVER 64K BLOCK COUNT
DECREMENT BLOCK COUNT FOR LOOP
CONTINUE TO NEXT TEST IF DONE
CX
CX
K8_LOOP3
SAVE LOOP COUNT
LOOP TILL ALL MEMORY CHECKED
END MA I N TEST LOOP
CLEAR MAX I MUM BLOCK COUNT
CLEAR 8ASE SIZE COUNT FROM STACK
ADDRESS TEST VALUES ARE IN STACK
AX
AX
ADDRESS LINE 16-23 TEST
0200 B9 40BB
02EO E8 0000 E
"OV
CALL
02E3
OZE5
02E6
02EC
6A 08
07
26: C6 06 0064 00
26: C7 06 0062 0000
PUSH
POP
MOV
MOV
02F3
02F5
02F7
02F9
02FB
2A
E6
E6
BO
E6
INITIALIZE
;----CO
85
86
01
84
os
DESCRIPTOR
BYTE PTR GOT PTR
ES
BYTE PTR ES: (OS TEMP.BASE HI BYTE~ ,0
ES:DS_TEMP,BASE:LO_WORD,O--
TEMPORARY SEGMENT SAVE IN OMA PAGE REGISTER
SUB
OUT
OUT
"OV
OUT
;-----
LET FIRST PASS BE SEEN
COUNT FOR 250 MS F I XED T I ME DELAY
ALLOW S I X 0 I SPLAY REFRESH CYCLES
CX,16511
WAITF
AL,AL
OMA PAGE+4,AL
OMA-PAGE+5,AL
AL,OIH
OMA_PAGE+3,AL
HIGH BYTE OF LOW WORD OF SEGMENT
LOW BYTE OF LOW WORD OF SEGMENT
SET HIGH BYTE OF SEGMENT WORD
HIGH BYTE OF SEGMENT
POINT TO NEXT BLOCK OF 64K
E21_A:
MOV
OUT
ADO
; -----
AL,33H
<><><><><><><><><><><><>
MFG PORT, AL
, < > < > CHECK PO 1NT 33 <><>
BYTE PTR ES: (DS_TEMP.BASE_HI_BYTEI ,01
CHECK FOR END OF BASE MEMORY TO BE TESTED
0307 26: 80 3E 0064 OA
0300 77 13
CMP
JA
BYTE PTR ES: (OS TEMP.BASE HI BYTEI, OAH
NEXT_A
-CONTINUE IF ABOVE
030F
0310
0311
0312
0313
0314
0315
031A
POP
POP
POP
PUSH
PUSH
PUSH
CMP
JB
CX
I GET COUNT
BX
; GET COUNT TESTED
AX
; RECOVER COUNT OF BASE MEMORY BLOCKS
AX
; SAVE BASE COUNT
BX
: SAVE TESTED COUNT
CX
; SAVE TOTAL COUNT
BYTE PTR ES: (OS TEMP.BASE HI BYTE~ ,AL
; MAX BASE COUNT
NEXT_A
;-CONTINUE IF NOT DONE WITH BASE MEMORY
I MEG
6'3
6"
6'5
6'6
6"
6'8
6,9
620
62'
622
623
62'
625
626
627
628
629
630
63'
632
633
63.
635
636
6"
59
58
58
50
53
51
26: 38 06 0064
12 06
DO ADD 1T I ONAL STORAGE ABOVE
031C
031C 26: C6 06 0064 10
0322
0322 26: AO 0064
6.'
6'2
6.3
6.5
6'6
6.7
6.8
6.9
650
65'
652
653
65.
655
656
657
658
659
660
66'
662
663
66'
665
666
6.7
668
669
670
611
672
6-73
67.
675
6,.
6"
678
0326 E6 84
0339
033C
033F
0340
0341
0342
0343
0345
0341
89
E8
59
58
50
51
3B
8B
15
60
68'
;
;
CHECK FOR TOP OF MEMORY
JZ
;-----
6A
IF
2B
88
8B
2B
89
AL,BYTE PTR ES: (OS_TEMP.8ASE_HI_BYTEI
DMA PAGE REGISTERS 3
e"p
0328 3C FE
032A 14 34
032C
032E
032F
0331
0333
0335
0337
1 MEG
BYTE PTR ES: (OS_TEMP.BASE_Hl_BYTEl ,I OH
OUT
:-----
AL,OFEH
KB_LOOP _3
(FEOOOO]
SAVE THE HIGH BYTE OF SEGMENT
FOR POSSIBLE ERROR
16 MEG
;
:
TOP OF MEMORY?
GO NEXT TEST IF
IT IS
SET OS REGISTER
PUSH
POP
SUB
BYTE PTR OS TEMP
as
FF
15
F7
CO
05
"OV
"OV
1 A69
0000 E
"OV
CALL
CX,6761
WAITF
POP
POP
PUSH
PUSH
CX
CX
"OV
JNZ
AX,OX
AX,OX
E21A
SUB
"OV
-
PO I NT TO START OF BLOCK
GET THE VALUE OF TH I S BLOCK
SET SI FOR POSSIBLE ERROR
CLEAR MEMORY LOCAT I ON
01,01
DX,oS:[DI]
SI,DI
AX,AX
[01] ,AX
ALLOW D I SPLA Y T I ME TO 0 I SPLA Y MESSAGE AND REFRESH TO RUN
C2
C2
IE
e"p
COUNT FOR 102 MS F I XED T I ME DELAY
ALLOW FIVE 0 I SPLA Y REFRESH CYCLES
GET THE LOOP COUNT
RECOVER TESTED MEMORY
SAVE TESTED MEMORY
SAVE LOOP COUNT
DOES THE BLOCK 10 MATCH
GET THE BLOCK 10 FOR POSS IBLE ERROR
GO PR I NT ERROR
AX
AX
CHECK FOR CHECK PAR 1TY
0349 E4 61
0348 24 CO
0340 15 18
AND
JNZ
034F
0350
0351
0354
0355
0356
0359
035A
035B
POP
POP
ADD
PUSH
PUSH
CALL
POP
OEC
JCXZ
59
58
05 0040
50
51
E8 099F R
59
49
E3 03
0350 51
035E EB 90
679
.80
.82
683
68'
"OV
;-----
638
639
6.0
64.
NEXT A2:
MOV
[N
AL,PORT B
AL,PARITY ERR
E21A
-
CHECK FOR 110 OR PARITY CHECK
STRIP UNWANTED BITS
EXIT IF PARITY ERROR
CX
POP CX TO GET AX
RECOVER TESTED MEMORY
64K INCREMENTS
SAVE TESTED MEMORY
SAVE LOOP COUNT
01 SPLAY OK MESSAGE
RECOVER 64K BLOCK COUNT
LOOP TILL ALL MEMORY CHECKED
CONTINUE
AX
AX,64
AX
CX
PRT OK
CX CX
KB_LOOP _3
PUSH
CX
J"P
E21_A
SACK TO REAL MODE 0360
0360 BO 34
0362 E6 80
KB LOOP 3:
-MOV
OUT
AL,34H
MFG_PORT ,AL
SAVE LOOP COUNT
CONTINUE TILL DONE
MEMORY TESTS DONE
<> <><><><><><><> <><><><>
<><> CHECKPOINT 34 <><>
TEST2
5-63
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
6.5
686
6.7
0364 E9 0000 E
J"P
1-7
06-10-85
:
;
PROC_SHUTDOWN
BACK TO REAL MOOE
NEXT TEST V I A JUMP TABLE
I SHUT2)
6 ••
6.9
690
691
&92
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
71 7
718
719
;----;----;
0367
0369
036B
0360
036F
0371
0373
E6
8A
E6
88
E6
86
E6
82
C4
83
C6
86
0375
0377
0378
037A
037C
037E
0380
0382
28 F6
A8
E4 61
E6 88
OC OC
E6 61
24 F3
E6 61
E21 A:
OUT
"OY
OUT
"OY
OUT
XCHG
OUT
EO
85
; -----
CLEAR
I/O CHANNEL CHECK OR R/W PARITY CHECK
S[ •SI
WRITE TO FAILING BLOCK
AL,PORT B
DMA PAGE+7,AL
AL, RAM PAR OFF
PORT B7AL AL. RAM PAR ON
PORT_B7AL -
GET PAR I TY CHECK LATCHES
SAVE FOR ERROR HANDLER
TOGGLE J ID-PAR I TY CHECK ENABLE
TO RESET CHECKS
AND
0384 58
038558
0386 5B
0387 C 1 E3 06
038A 2B C3
038C 73 17
(LOW BYTE)
GET THE FA I LING OFFSET
IN
OUT
; -----
SAVE FAILING BIT PATTERN
SAVE HIGH BYTE
DMA PAGE+I .AL
AL,AH
DMA PAGE+2,AL
AX,51
OMA PAGE+5.AL
AH,AL
DMA_PAGE+4,AL
SUB
STOSW
OUT
OR
OUT
GET THE LAST OF GOOD MEMORY
POP
POP
POP
SHL
SUB
JAE
720
721
722
723
724
PRINT FAILING ADDRESS AND XOR'ED PATTERN IF DATA COMPARE ERROR
USE DMA PAGE REGI STERS AS TEMPORARY SAVE AREA FOR ERROR
SET SHUTDOWN 3
AX
AX
CLEAR BLOCK COUNT
GET THE LAST OF GOOD MEMORY
GET BASE MEMORY COUNTER
CONVERT TO MEMORY SIZE COUNTS
COMPARE LAST GOOD MEMORY WITH BASE
I F ABOVE OR EQUAL, USE REMA I NDER IN
CMOS_U_M_S_IH/U
BX
8X,6
AX,BX
E21 I
ELSE SET BASE MEMORY SIZE
038E 6A
0390 IF
18
PUSH
POP
BYTE PTR RSDA PTR
OS
-
SET THE DATA SEGMENT
I N PROTECTED MODE
ADO
AX,ax
IPMEMORY SIZE, AX
CONVERT BACK TO LAST WORK I NG MEMORY
TO INDICATE HOW MUCH MEMORY WORKING
725
726
727
72.
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
74'
745
746
747
748
749
750
751
752
0391 03 C3
0393 A3 0013 R
"OY
RESET 512K --> 640K OPT I ON
0396
0399
039C
039E
03AO
03A3
03A5
03A5
03A7
03A9
03AC
03AE
0380
B8
E8
24
86
E8
33
8383
0000 E
7F
C4
0000 E
CO
8B
80
E8
8A
BO
E8
C8
BI
0000 E
EI
BO
0000 E
XCHG
CALL
XOR
ADDRESS OPTIONS INFORMATION BYTE
READ THE MEMORY INFORMATION FLAG
SET 640K OPT I ON OFF
MOVE TO WORK REG I STER
UPDATE STATUS IF IT WAS ON
CLEAR VALUE FOR EXTENS J ON MEMORY
"OY
"OY
CALL
"OY
"OY
CALL
CX,AX
AL,CMOS U M S HI+NMI
CMOS WRITE - AH,C[
AL,CMOS U M S LO+NMI
CMOS_WRITE - -
SAVE ADJUSTED MEMORY 51 ZE
AND
E21 1:
; -----
"OY
CALL
03B9 E9 0000 E
JMP
AX,3·H+CMOS SHUT _ DOWN+NM I
CMOS_WRITE
SHUTDOWN
TEST2
SAVE THE HIGH BYTE MEMORY SIZE
GET THE LOW BYTE
DO THE LOW BYTE
WRITE IT
SET SHUTDOWN 3
0383 88 a38F
0386 E8 0000 E
5-64
I F SET
AX,X·(CM05INFOI28+NMI)
CMOS READ AL, NOT M64QK
AL,AH
CMOS WR ITE
AX,AX
"OY
CALL
PROC_SHUTDOWN
ADDRESS FOR SHUTDOWN RETURN
SET RETURN 3
'-8
IBM Personill Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
753
PAGE
;
754
755
756
757
758
759
760
76'
762
763
764
765
766
767
768
769
;
-- - -- - - -- - -- - - -- - -- -- -- - -- - - -- - -- - - -- - - -- - -- - - - - - -- - - -- - -- - - - - - - - - -(R/WI MEMORY OR PAR[TY ERRORS)
MEMORY ERROR REPORTING
DESCR[PTION FOR ERRORS 201
OR 202
"AABBCC DDEE 201"
(CMP ERROR OR PAR[TY)
(ADDRESS LINE 0-15 ERROR)
(OR 202)
AA=H I GH BYTE OF 24 B IT ADDRESS
BB=M[DDLE BYTE OF 24 BIT ADDRESS
CC=LOW BYTE OF 24 BI T ADDRESS
OD=HIGH BYTE OF XOR FA[LlNG B[T PATTERN
EE=LOW BYTE OF XOR FA[LlNG BIT PATTERN
DESCRIPTION FOR ERROR 202 (ADDRESS LINE 00-151
A WORD OF FFFF IS WRITTEN AT THE FIRST WORD AND LAST WORD
OF EACH 64K BLOCK WITH ZEROS AT ALL OTHER LOCATI ONS OF THE
BLOCK.
A SCAN OF THE BLOCK I S MADE TO I NSURE ADDRESS LI NE
a-Is ARE FUNCTIONING.
770
771
772
773
774
775
776
777
778
779
780
78'
782
783
784
785
786
787
788
789
790
79,
792
793
794
795
796
797
798
799
800
80 ,
802
803
804
805
806
807
808
809
06-10-85
DESCRIPTION FOR ERROR 203 (ADDRESS LINE 16-23)
AT THE LAST PASS OF THE STORAGE TEST, FOR EACH BLOCK OF
64K, THE CURRENT STORAGE SIZE (101 IS WRITTEN AT THE FIRST
WORD OF EACH BLOCK. IT IS USED TO FINO ADDRESSING FAILURES.
"AABBCC OOEE 203"
SAME AS ABOVE EXCEPT FOR DOEE
GENERAL DESCRIPTION FOR BLOCK 10
DD=H I GH BYTE OF BLOCK [0
EE=LOW BYTE OF BLOCK 10
BLOCK
0000
0040
[0
(DDEE WILL NOW CONTAINED THE
10)
ADDRESS RANGE
000000 --> OOFFFF
010000 --> OIFFFF
/I
090000 --> 09FFFF
100000 --> 10FFFF
0200
(512->576K) [F 640K BASE
(1024->1088K) IF 512K BASE
EXAMPLE (640K BASE MEMORY + 512K I fO MEMORY = I 152K TOT ALl
NOTE: THE CORRECT SLOCK 10 FOR THIS FAILURE IS 0280 HEX.
DUE TO AN ADDRESS FAILURE THE BLOCK ID+128K OVERLAYED
THE CORRECT BLOCK 10.
00640K OK
10000 0300 202
<-- LAST OK MEMORY
<-- ERROR DUE TO ADDRESS FAILURE
IF A PARITY LATCH WAS SET THE CORRESPONDING MESSAGE W[LL D[SPLAY.
"PARITY CHECK
I"
(OR 21
DMA PAGE REGISTERS ARE USED AS TEMPORARY SAVE AREAS FOR SEGMENT
OESCR I PTOR VALUES.
03BC
038C E8 0000 E
SHUT3 :
ENTRY FROM PROCESSOR SHUTDOWN 3
SET REAL MOOE DATA SEGMENT
CALL
DDS
MOV
MOV
«tMFG ERR FLAG+l,MEM FA[L;
",L,CR
-;
PRT HEX
AL,CF
PRT HEX
AL,DMA PAGE+3
XPC BYTE
AL,DMA PAGE+4
XPC BYTE
AL,DMA PAGE+5
XPC BYTE
AL,T ,
PRT HEX
AL,OMA PAGE+2
XPC BYTE
AL,OMA PAGE+ I
XPC_8YTE
BlO
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
83'
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
03BF
03C4
03C6
03C9
03CB
03CE
0300
0303
0305
0308
030A
0300
030F
03E2
03E4
03E7
03E9
C6
BO
E8
80
E8
E4
E8
E4
E8
E4
E8
BO
E8
E4
E8
E4
E8
06 0016 R 01
00
0000 E
OA
0000 E
84
0000 E
85
0000 E
86
0000 E
20
0000 E
83
0000 E
82
0000 E
03EC
03EE
03FO
03F3
E4
3C
BE
14
80
33
0000 E
OA
'N
eMP
MOV
03F5 BE 0000 E
03F8 3C 32
03FA 74 03
MOV
eMP
CALL
MOV
CALL
'N
CALL
'N
'N
CALL
CALL
MOV
CALL
'N
'N
CALL
CALL
<><> MEMORY FAILED
<><>
CLEAR AND SET MANUFACTURING ERROR FLAG
CARR I AGE RETURN
LINE FEED
GET THE HIGH BYTE OF 24 BIT ADDRESS
CONVERT AND PR I NT CODE
GET THE MIDDLE BYTE OF 24 BIT ADDRESS
GET THE LOW BYTE OF 24 B [T ADDRESS
SPACE TO MESSAGE
GET HIGH BYTE FAILING BIT PATTERN
CONVERT AND PR INT CODE
GET LOW BYTE FAILING BIT PATTERN
CONVERT AND PR INT CODE
CHECK FOR ADDRESS ERROR
03FC BE 0000 E
03FF
03FF E8 0000 E
0402 E4 88
JZ
JZ
AL ,MFG_PORT
AL,33H
S I ,OfFSET E203
ERR2
GET THE CHECKPO I NT
15 IT AN ADDRESS FAILURE?
LOAD ADDRESS ERROR 16->23
GO IF YES
S I ,OFFSET E202
AL,32H
ERR2
LOAD ADDRESS ERROR 00-> 15
GO IF YES
MOV
SI,OFFSET E201
SETUP ADDRESS OF ERROR MESSAGE
CALL
E MSG
AL,DMA_PAGE+1
PRINT ERROR MESSAGE
GET THE PORT_B VALUE
ERR2:
'N
DISPLAY
"PARITY CHECK
0404 A8 80
0406 74 OB
TEST
JZ
NM'
0408
0409
040C
040F
0412
0413
0413
0415
PUSH
CALL
50
E8 098F R
BE 0000 E
E8 0000 E
58
MOV
CALL
NM'
A8 40
14 09
0417 E8 098F R
041A BE 0000 E
0410 E8 0000 E
0420
- MI:
TEST
JZ
NM'
CALL
-
PADING
51 ,OFFSET 01
P MSG
AX
MOV
NM'
- M'
AX
POP
CALL
?" ERROR MESSAGES
AL,PAR[TY_CHECK
AL,IO_CHECK
- M2
PADING
S I ,OFFSET 02
P _MSG
CHECK FOR PLANAR ERROR
SKIP IF NOT
SAVE STATUS
I NSERT BLANKS
PLANAR ERROR, ADDRESS "PARITY CHECK
DISPLAY "PARITY CHECK I" MESSAGE
AND RECOVER STATUS
I/O PAR I TV CHt=:CK 1
SK I P I F CORRECT ERROR D I SPLA YEO
I NSERT BLANKS
ADDRESS OF "PAR I TY CHECK 2" MESSAGE
DISPLAY "PARITY CHECK 2" ERROR
M2:
CONTINUE TESTING SySTEM ••••
TEST2
5-65
j"
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
8.5
8 ••
8.7
868
8.9
870
871
872
873
874
875
87.
877
878
879
880
881
882
PAGE
;----0420
1-9
06-10-85
ENTRY FROM SHUTDOWN
SHUT2 :
;- - - -- -- - - - - - - -- -- ---- - - - - - - - - - - - - - - - - - - --- - - - - - - - - - -- -; TEST. 20
;
ADDITIONAL PROTECTED (VIRTUAL MODE) TEST
; DESCRIPT[ON
;
THE PROCESSOR I S PUT [N PROTECTED MODE AND
;
THE FOLLOW I NG FUNCT IONS ARE VER I F I ED
;
1. VER I FY PROTECTED MODE
;
THE MACHINE STATUS [S CHECK FOR VIRTUAL MODE
;
;
2. PROGRAMMED I NTERRUPT TEST
AN PROGRAMMED INTERRUPT 32 IS ISSUED AND
;
AND VERIFIED
3. EXCEPT I ON INTERRUPT 13 TEST
;
A DESCR I PTOR SEGMENT LIM I TIS SET TO ZERO
;
AND A WR I TE TO THAT SEGMENT I S ATTEMPTED
;
AN EXCEPT I ON 13 I S EXPECTED AND VER I F I ED
;
LOT/SOT LTR/STR TEST
LOAD LOT REGISTER AND VERIFY CORRECT
LOAD TASK REG I STER AND VER I FY CORRECT
;
THEY ARE VERIFIED VIA THE STORE INSTRUCTION
;
5. THE CONTROL FLAGS OF THE 286 FOR D[RECTIDN
;
ARE VER I F I ED V I A THE STo AND CLD COMMANDS
;
;
I N PROTECTED MODE
BOUND INSTRUCTION TEST (EXCEPTION INT 5)
;
CREATE A SIGNED ARRAY INDEX WITHIN AND
;
OUTSIDE THE LIMITS.
CHECK THAT NO EXC INT
IF WITHIN LlM[T AND THAT AN EXC INT 5
;
OCCURS I F OUTS I DE THE LI M I TS.
;
7.
PUSH
ALL
POP
ALL
TEST
;
SET GENERAL PURPOSE REGISTERS TO DIFFERENT
;
VALUES, ISSUE A PUSH ALL, CLEAR THE REGISTERS
;
THEN I SSUE A POP ALL AND VER I FY CORRECT.
8. CHECK THE VERR/VERW INSTRUCTIONS
;
THE ACCESS BYTE I S SET TO READ ONLY THEN TO
;
A WR I TE ONLY AND THE VERR / VERW I NSTRUCT IONS
;
ARE VERIFIED.
;
9. CAUSE AN INTERRUPT 13 VIA A WRITE TO A
;
;
READ ONLY SEGMENT
;
VERIFY THE ARPL INSTRUCTION FUNCTIONS
SET THE RPL FIELD OF A SELECTOR AND
VERIFY THAT CURRENT SELECTOR RPL IS SET
;
CORRECTLY.
11. VERIFY THE LAR INSTRUCTION FUNCTIONS
;
12. VERIFY THE LSL INSTRUCTION FUNCTIONS
;
13. LOW MEG CH I P SELECT TEST
;
803
884
885
88.
887
888
889
890
891
892
893
894
895
89.
897
898
899
900
901
902
903
904
905
90.
907
908
909
910
911
912
913
914
915
91.
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
93.
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
95.
957
958
959
900
961
962
963
964
905
906
967
968
969
910
971
972
973
914
975
976
977
978
0420 E9 0000 E
JMP
POST3
GO TEST THE 286 PROTECTED MODE
FAILURE ENTRY FROM A SHUTDOWN
0423
0426
0428
042A
0420
042F
E8
E4
3C
BE
14
BE
0000 E
80
35
0000 E
00
0000 E
SHUT7:
IN
JZ
SHUT7A: MOV
043280 DE 0016 R 02
0437 E8 0000 E
043A E8 08
043C E8 0000 E
0000 E
CO
0017 R
OOOE
0082
2A CO
EE
42
E2 FA
@MFG_ERR_FLAG+I ,PRO_FA ILl
CALL
E MSG
SHORT SHUT6
E_MSG
CALL
ESTABLISH THE DATA SEGMENT
CHECK FOR CH I P SELECT ERROR
PR I NT ERROR 109
GO IF NOT
PROTECTED MODE FA I LED
<><> <><> <> <> <> <> <> <> <><> <> <> <>
<><> V I RTUAL MODE FA I LED
PR I NT MESSAGE
PR I NT MESSAGE
<><> <><><> <> <> <> <> <> <> <> <> <> <>
<><> LOW MEG CH I P SELECT
OR
; -----
E8
28
A3
89
8A
005
AL,MFG PORT
AL,35H51 ,OFFSET El09
SHUT7B
SI ,OFFSET El04
OR
JMP
SHUT7B:
043F 80 OE 0016 R 04
0444
0447
0449
044C
044F
0452
0452
0454
0455
0450
CALL
eMP
MOV
SHUT6:
PROTECTED MODE TEST PASSED ENTRY FROM A SHUTDOWN
CALL
DDS
SUB
MOV
MOV
MDV
AX,AX
WORD PTR @KB FLAG, AX
CX,OEH
OX ,DMA_PAGE+ 1
CLR LOOP:
SUB
DUT
PROTECTED MODE TEST PASSED
CLEAR KEYBOARD STATE FLAGS
CLEAR PAGE REG I STERS
AL,AL
DX,AL
INC
DX
LOOP
CLR_LOOP
; --- - --- --- -------------- - - -- - --- ---------I
;
;
;
;
TEST.21
KEYBOARD TEST
DESCRIPTION
RESET THE KEYBOARD AND CHECK THAT SCAN
CODE n AA" I S RETURNED TO THE PROCESSOR.
CHECK FOR STUCK KEYS.
- - --- -------------------------
0458 90 35
045A E6 80
045C
0461
0463
0406
0466
0460
0470
0472
0414
0475
0478
0470
0482
0484
0486
0489
5-66
F6
75
E9
80
75
E9
80
E6
FA
81
74
80
74
80
E8
87
06 0012 R 20
03
0516 R
3E 0072 R 64
03
0516 R
36
80
3E 0072 R 1234
17
3E 0072 R AA
10
AE
0000 E
04
TEST2
MOV
OUT
AL,35H
MFG_PORT ,AL
TEST
JNZ
@MFG TST,MFG LOOP
F7 AF7;
8YTE PTR @RESET FLAG,064H
F7 B
F7AL,36H
MFG_PORT ,AL
JMP
F7_A:
CMP
JNZ
F7_B:
MOV
OUT
eLI
JMP
eMP
JZ
eMP
JZ
MOV
CALL
MOV
<> <> <> <><> <> <><><> <><><>
<><> CHECK PO I NT
35 <><>
MANUFACTURING BURN
IN TEST MODE?
YES - SKIP KEYBOARD TEST
I MANUFACTURING RUN IN MODE?
YES -
SK I P KEYBOARO TEST
<><><><> <> <> <> <> <> <> <> <>
<><> CHECKPOINT
36 <><>
@RESET FLAG, 1234H
SOFT RESET?
Gl0
BYTE PTR @RESET FLAG, KB OK ; CHECK FOR AA ALREADY RECE I YEO
GI 0
GO I F YES
AL,ENA KBD
C8042 ; ENA8LE KEYBOARD
8H,4
; TRY 4 TIMES
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 00/10/85
POST TESTS AND INITIALIZATION ROUTINES
979
048B
980
048E
981
0490
982
0492
983
0494
984
0490
985
0499
986
049B
987
0490
988
04AO
989
04A3
990
04A5
991
04A7
992
993
04A9
994
995
04AE
996
04B I
997
04B3
998
0486
999
04B8
1000 04BA
1001 04BC
1002 04BF
1003
1004
1005
1006 04CI
1007 04C3
1008
1009 04C5
1010 04C7
101 1 04CA
1012 04CD
1013 04DO
1014 04D2
1015 0404
1016
1017 04D6
1018 04D8
1019
1020 04DA
1021 04DC
1022 04DF
1023
1024
1025
1026 04EI
1027 04E2
1028 04E4
I 029 04E6
1030 04E8
1031 04EA
1032 04EC
1033 04EE
1034 04FO
1035 04F2
1036 04F4
1037 04F6
1038 04F9
1039 04FB
1040 04FD
1041 04FF
10420501
1043
1044 0506
1045 0509
1046 050B
1047
1048 050E
1049
1050
1051 0513
1052
1053
1054
10550516
1056 0518
1057
1058 051A
1059 051C
1060 051E
1061 051F
1062 0521
1063 0524
1064 0526
1065
1060
1067
1068 0528
1069 052A
1070
107 I
1072
1073 0520
1074 052F
1075 0531
1076 0534
1071 0535
1078 0536
1079 0539
1080 053C
1081 0530
1082 053E
1083 053F
1084
1085
1086
1087
1088 0541
1089 0543
1090 0545
1091 0548
1092 0549
E8
75
FE
75
BO
E8
E4
BO
E8
E8
E4
A8
74
0000
04
CF
F7
AD
0000
60
EO
0000
0000
60
01
OA
E
LOOPI:
Gl0:
E
E
E
CALL
.JNZ
DEe
.JNZ
MDV
CALL
IN
MDV
CALL
CALL
IN
TEST
JZ
80 DE 0016 R 08
BE
EB
E8
E3
BO
E6
80
75
0000 E
00
0000 E
29
37
80
FB AA
20
1-10
06-10-85
OBF 42
GIO
BH
LOOPI
AL,DIS KBD
C8042
AL,PORT A
AL,KYBD-CLK DATA
C8042
08F 42
AL,PORT A
AL,KYBO-CLK
CHECK FOR OUTPUT BUFFER FULL
GO I F BUFFER FULL
o I SABLE KEYBOARD
FLUSH
GET THE CLOCK AND DATA LINES
WAIT FOR OUTPUT BUFFER FULL
GET THE RESULTS
KEYBOARD CLOCK MUST BE LOW
GI I
'1'IMFG_ERR_FLAG+ t ,KYCLK_FA I L ;
GI I:
MOV
JMP
CALL
JCXZ
MDV
OUT
eMP
JNE
<><><><><><><><><><><><><><><>
<><> KEYBOARD CLOCK HIGH <><>
DISPLAy 304 ERROR
REPORT ERROR
I SSUE RESET TO KEYBOARD
PR INT ERROR MESSAGE IF NO INTERRUPT
S I ,OFFSET E304
SHORT F60
KBD_RESET
F.
AL,37H
MFG PORT, AL
BL,KB_OK
F6
<> <><><> <> <><><> <><> <> <>
<><> CHECKPOINT 37 <><>
SCAN CODE AS EXPECTED?
NO - DI SPLAY ERROR MESSAGE
CHECK FOR STUCK KEYS
BO 38
E6 80
MOV
OUT
AL,38H
MFG_PORT ,AL
80
E8
B9
E8
E4
A8
74
MOV
CALL
MOV
CALL
IN
TEST
JE
AL ,ENA_KBD
C8042
CX ,6628
WAITF
AL, STATUS_PORT
AL ,OUT _ BUF _FULL
F7
BO 39
E6 80
MOV
OUT
AL , 39H
MFG_PORT ,AL
E4 60
E8 0000 E
EB 2A
IN
CALL
JMP
AL,PDRT_A
XPC BYTE
SHORT F6C
AE
0000 E
19E4
0000 E
64
0I
40
<> <><> <> <> <><> <> <> <> <> <>
<><> CHECKPOINT 38 <><>
ASSURE KEYBOARD ENABLED
I S SUE THE COMMAND
COUNT FOR 100 MILLISECONDS
DELA Y FOR A WH I LE
CHECK FOR STUCK KEYS
OUT BUFFER FULL?
YES - CONT I NUE TEST I NG
<> <> <> <> <> <> <> <><> <> <> <>
<><> CHECK PO I NT 39 <><>
GET THE SCAN CODE
CONVERT AND PR I NT
CONTINUE
KEYBOARD ERROR TRY TO DETERM I NE IF 8042
FA
BO AB
E6 64
2B C9
B7 05
E4 64
A8 01
ElF A
75 09
FE CF
75 F4
BE 0000 E
EB 18
E4 60
3C 00
74 OA
80 OE 0016 R 10
BE 0000 E
EB 08
BE 0000 E
F6:
F6A:
F6B:
F6C:
80 DE 0016 R 20
E8 0000 E
I S WORK I NG
MOV
JMP
MOV
AL, I NTR FACE CK
COMMAND TO 8042
STATUS PORT,AL
CX ,CX BH,05
WAIT FOR OUTPUT BUFFER FULL
AL,STATUS PORT
AL,OUT BUF FULL
8042 FINISHED TEST?
F6A
F6B
GO CHECK RESULTS
BH
F6A
TRY AGAIN
SI ,OFFSET E303
INDICATE PLANAR FAILURE
SHORT FoD
(REMOVE KEYBOARD TRY AGAIN)
AL,PORT A
GET THE RESULTS OF [NTERFACE TEST
AL,O
[S THE INTERFACE OK?
F6C
OMFG_ERR_FLAG+I,KY_SYS_FAIL;
<><><><><><><><><><><><>
;
<><> KEYBOARD/SYSTEM <><>
S[ ,OFFSET E303
; PLANAR FAILURE
SHORT F6D
; GO I F YES
SI,OFFSET E301
; GET MESSAGE ADDRESS
<><><><> <> <> <> <> <> <> <> <> <>
<><> KEYBOARD FAILED <><>
OR
F6D:
I NTERF ACE
eLi
MOV
OUT
SUB
MOV
IN
TEST
LOOPZ
JNZ
DEC
JNZ
MOV
JMP
IN
CMP
JZ
OR
CALL
;
PRINT MESSAGE ON SCREEN
INITIALIZE 8042 TO HONOR KEY LOCK
BO 3A
E6 80
80
E6
FA
BO
E8
BO
E6
F7:
AL,3AH
MFG _PORT, AL
MOV
OUT
AL,OFFH
INTAOI,AL
D[SABl.E INTERRUPTS
60
0000 E
45
60
MOV
CALL
MOV
OUT
AL, WR I TE 8042 LOC
C8042
AL,45H
PORT_A,AL
WR I TE 8042 MEMORY COMMAND
I SSUE THE COMMAND
SET SYSTEM FLAG - OUTBUF INTERRUPT PC I COMPATIBILITY
RESET INHIBIT OVER RIDE
eLi
; --B4 DO
E8 0000 E
DEGATE ADDRESS LINE 20
MOV
CALL
AH, 0 I SABLE B I T20
GATE_A20
-
SETUP HARDWARE
2B
8E
B9
OE
IF
BE
BF
A5
47
47
E2
<> <> <> <> <><><> <> <><><><>
<><> CHECKPOINT 3A <><>
MOV
OUT
FF
21
CO
CO
0008
0000 E
0020 R
F1A:
FB
SUB
MOV
MOV
PUSH
POP
MOV
MOV
MDVSW
INC
INC
LOOP
AX,AX
ES,AX
CX,08
CS
DS
S I ,OFFSET VECTOR TABLE
D I ,OFFSET 0 I NT _PTR
DI
01
F7A
SETUP HARDWARE
ASSUME
28 CO
8E CO
B9 0008
OE
IF
SUB
MOV
MOV
PUSH
POP
SET COMMAND IN AH
I SSUE THE COMMAND
[NTERRUPT VECTOR TABLE LEVEL 0-7
ES:ABSO
AX,AX
ES,AX
CX,08
es
GET VECTOR COUNT
SETUP DS SEGMENT REG I STER
:
SK I P OVER SEGMENT
INTERRUPT VECTORS LEVEL 8-15
(VECTORS START AT
INT 70H)
GET VECTOR COUNT
SETUP DS SEGMENT REGI STER
OS
TEST2 5-67
IBM Personal Comput!tr MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
I-II
06-10-85
MOV
1093 054A BE 0000 E
1094 0540 BF 01 CO R
MOV
1095 0550 AS
F7AI:
MOVSW
; SK I P OVER SEGMENT
1096 0551 47
INC
01
1097 0552 47
01
INC
1098 0553 E2 FB
LOOP
F7At
1099
SET UP OTHER I NTERRUPTS AS NECESSARY
1100
1101
1102
OS:ABSO
ASSUME
1 103 0555 2B CO
AX,AX
; 05=0
SUB
1 104 0557 8E 08
MOV
OS.AX
1105 0559 C7 06 0008 R 0000 E
MOV
WORD PTR @NMI PTR. OFFSET NM I I NT ; NMI INTERRUPT
MOV
110,6 055F C7 06 0014 R 0000 E
8AS IC
1 107 0565 C7 06 0062 R F600
MOV
1108
ZERO RESJ::RVED VECTORS
1109
;
1110
MOV
I I I 1 056B BF 0180
DI.60H'"4
FILL INTERRUPT 60 THRU 67 WITH ZERO
1 1 12 056E B9 00 I 0
CX.16
CLEAR 16 WORDS
MOV
MOV
11130571 C7 05 0000
FTAZ:
WORD PTR 05:[01],0
1 I 14 0575 83 C7 02
01,2
POINT TO NEXT LOCATION
AOO
1115 0578E2 F7
LOOP
F7A2
1116
1117
SETUP TIMER 0 TO BLINK LED IF MANUFACTURING TEST MODE
I I 18
ASSUME
OS:DATA
1 I 19
; ESTABLISH DATA SEGMENT
1120 057A E8 0000 E
CALL
005
1121
; MFG. TEST MODE?
11220570 F6 06 0012 R 20
TEST
PMFG TST, MFG LOOP
F9
I 123 0582 75 08
JNZ
1124 0584 26: C7 06 0020 R 0000 E
MOV
WORD PTR ES: IP I NT PTR, OFFSET BL I NK I NT ; SETUP T I MER TO BL I NK LED
1125 058B BO FE
MOV
AL,OFEH
; ENABLE T I MER INTERRUPT
1126 0580 E6 21
OUT
INTAOI,AL
1127 058F FB
F9:
; ALLOW INTERRUPTS
STI
1128
; ----1129
ISSUE A RESET TO THE HARD FILE I F SOFT RESET
1130
1131059081 3E 0072 R 1234
CMP
PRESET_FLAG, 1234H
SOFT RESET?
1132 0596 75 OE
F9A
CaNT INUE IF NOT
JNZ
MOV
1133 0598 89 OOFF
CX,OFFH
1 134 0598 BA 03F6
MOV
DX,03F6H
1135 059E 80 04
MOV
AL,04H
RESET
1136 05AO EE
DX,AL
OUT
1137 OSA1 E2 FE
F9_A:
LOOP
F9 A
HOLD RESET
I 138 05A3 2A CO
SUB
AL7AL
1139 05A5 EE
REMOVE RESET
OUT
aX,AL
1140
; ----- - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - -1141
1142
TEST .23
1143
;
DISKETTE ATTACHMENT TEST
1144
DESCR I PT I ON
1145
CHECK IF IPL DISKETTE DRIVE IS ATTACHED TO SYSTEM.
IF
1146
ATTACHED, VERIFY STATUS OF NEC FoC AFTER A RESET. ISSUE
1147
A RECALIBRATE AND SEEK COMMAND TO FDC AND CHECK STATUS.
1148
COMPLETE SYSTEM INITIALIZATION THEN PASS CONTROL TO THE
1149
BOOT LOADER PROGRAM.
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - -- - - -- - - - - - - - - - - - - - - - - - - --1150
1151
1 152 05A6 BO 3C
F9A:
MOV
AL,3CH
<><><><> <> <> <> <> <> <> <><>
<><> CHECKPOINT
1153 05A8 E6 80
3C <><>
OUT
MFG _PORT, AL
1154
1155 05AA BO 02
MOV
AL,02H
SET DATA RATE TO 250 K BITS PER SECOND
1156 05AC SA 03F7
MOV
OX ,3F7H
'157 05AF EE
OUT
DX,AL
1158 05BO F6 06 0010 R 01
TEST
BYTE PTR @EQUIP FLAG, 1H
DISKETTE PRESENT?
FI5
11590585 74 55
JZ
1160 05B7 F6 06 0012 R 20
@MFG TST ,MFG LOOP
TEST
MFG JUMPER INSTALLED?
Ft5 1161 058C 74 4E
JZ
GO IF YES
1 162 058E
FlO:
DISK_TEST:
1163 058E E4 21
IN
AL, INTAO 1
1164 05CO EB 00
JMP
1/0 DELAY
1 165 05C2 24 8F
ENA8LE 0 I SKETTE INTERRUPTS
ANa
AL ,OBFH
1 166 05C4 E6 21
OUT
INTAO t ,AL
1167 05C6 B4 00
MOV
AH,O
RESET NEC FDC
MOV
1168 05C8 8A 04
SET FOR OR I VE 0
OL,AH
1169 05CA CD 13
INT
13H
VERIFY STATUS AFTER RESET
1170 05CC F6 C4 FF
TEST
AH,OFFH
STATUS OK?
1171 05CF 75 25
NO - FDC FAILED
JNZ
Fl3
1172
; - ---TURN DR I VE 0 MOTOR ON
1173
1174
1175 0501 BA 03F2
MOV
DX,03F2H
GET ADDRESS OF FDC CARD
TURN MOTOR ON, ENABLE DMA, INTERRUPTS
11760504BO IC
MOV
AL,ICH
11770506 EE
OX,AL
WR I TE FOC CONTROL REG I STER
OUT
11780507 2B C9
WA I TF COUNT FOR 0.988 SECONDS
SUB
CX,CX
1179 0509 E8 0000 E
CALL
WAITF
WA I T I SECOND FOR MOTOR
1180
1181 050C 33 FF
SELECT OR I VE 0
XOR
01.01
1182 050E B5 01
MOV
SELECT TRACK I
CH, t
MOV
11 ~3 05EO C6 06 003E R 00
IPSEEK STATUS,O
I NSURE RECALl BRATE
1 184 05E5 80 OE OOAO R 01
OR
IPRTC WA IT FLAG, 0 I
NO REAL T I ME CLOCK, USE WA I T LOOP
SEEK1 185 05EA E8 0000 E
RECAL I BRATE 0 I SKETTE
CALL
1186 05EO 72 07
GO TO ERR SUBROUT I NE I F ERR
JC
Fl3
1187 05EF B5 22
MOV
CH,34
SELECT TRACK 34
1188 05FI E8 0000 E
CALL
SEEK
SEEK TO TRACK '34
1 189 05F4 73 08
OK, TURN MOTOR OFF
JNC
Fl.
1190 05F6
F13:
1191 05F6 80 OE 0016 R 40
PMFG ERR FLAG+ I ,OSK FAIL; DSK_ER~!<><><> <> <> <><> <><> <> <><>
OR
;
<><> OISKETTE FAILED
<><>
1192
1193 05FB BE 0000 E
MOV
5 I ,OFFSET E601
GET ADDRESS OF MESSAGE
1 194 05FE E8 0000 E
CALL
E_MSG
; GO PRINT ERROR MESSAGE
1195
1196
TURN DR I VE 0 MOTOR OFF
1197
F14:
DRO OFF:
1198 0601
1 199 0601 80 26 OOAO R FE
ALLOW FOR RTC WA I T
ANa
OPRTC WA I T FLAG, OFEH
AL,OCH
TURN DR I VE 0 MOTOR OFF
1200 0606 BO OC
MOV
120 I 0,608 BA 03F2
MOV
OX ,03F2H
F'DC CONTROLLER ADDRESS
1202 060B EE
OUT
DX;AL
1203
;----- SETUP KEYBOARD PARAMETERS
1204
1205
F15:
MOV
SET STRAY INTERRUPT FLAG
00
1206 060C C6 06 006B R 00
:g~g ~i~ :~~~~C:~~R~~~~~~o~~TNT _S~R~~~MENi ~~~N6A~~~~~~
-----
--
------- - - --
-
-
-- ---- -
-
"2
-
=
5-68
TEST2
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
1207 0611 8E ODIE R
1208 0614 89 36 001A
12090618 89 36 ODIC
1210 061C 89 36 0080
1211 062083 C6 20
1212062389 36 0082
1213
1214
1215
1216 0627 8F 0078 R
1217 062A IE
1218 0628 07
1219 062C 88 1414
1220 062F A8
1221 0630 A8
1222
1223
1224
12250631 88 0101
1226 0634 A8
1227 0635 A8
1228
1229
1230
1231 0636 E4 21
1232 0638 24 FE
1233 063A EB 00
1234 063C E6 21
1235
1236
1237
1238 063E F6 06 0012
1239 0643 75 03
1240 0645 E9 072E R
1241 0648
1242 0648 80 8E
1243 064A E8 0000 E
1244
1245 0640 8E 0000 E
1246 0650 A8 80
1247 0652 75 07
1248
1249 0654 8E 0000 E
1250 0657 A8 60
1251 0659 14 09
1252 0658
1253 0658 E8 0000 E
1254 (}65E 81 CD 8000
1255 0662 E8 45
1256
1257
1258
1259 0664 83 04
1260 0666 28 C9
1261 066880 8A
1262 066A E8 0000 E
1263 0660 A8 80
1264 066F 15 18
12650671 E2 F5
1266 0673 FE C8
1261 0675 15 EF
1268 0671 8E 0000 E
1269 067A E8 0000 E
1210
1271
1212
1213 0670 88 OE8E
1214 0680 E8 0000 E
1215 0683 DC 04
1276 0685 86 C4
1217 0687 E8 0000 E
1218 068A E8 DE
1279
1280
1281
1282 068C 89 0320
1283 068F 80 8A
1284 0691 E8 0000 E
1285 0694 A8 80
1286 0696 EO F7
1281 0698 E3 DO
1288
1289
1290
1291 069A
1292 069A 80 8E
1293 069C E8 0000 E
1294 069F A8 10
1295 06Al 1406
1296
1291
1298
1299 06A3 8E 0000
1300 06A6 E8 0000
130 I
1302
1303
1304 06A9 80 3E 0015
1305 06AE 8E 0000 E
1306 0681 74 OA
1301
13080683 80 3E 0015
1309 0688 75 06
1310 068A 8E 0000 E
1311 0680
1312 0680 E8 0000 E
1313
1314
1315
1316 06CO
1311 06CO 8A 03F 1
1318 06C3 EC
1319 06C4 24 F8
1320 06C6 3C 50
R
R
R
MOV
MOV
"OV
"OV
R
"OV
ADO
1-12
06-10-85
S I ,OFFSET @K8 8UFFER
.8UFFER HEAD,SI
(l8UFFER-TAIL,SI
(l8UFFER-ST ART,S I
SI,32
OBUFFER_END, S I
SETUP KEY80ARD PARAMETERS
DEFAULT 8UFFER OF 32 BYTES
SET PRINTER TIMEOUT DEFAULT
MOV
PUSH
POP
MOV
STOSW
STOSW
01 ,OFFSET ('PRINT TIM OUT;
OS
ES
AX, 1414H
SET DEFAULT PRINTER TIMEOUT
DEFAUL T=20
SET RS232 DEFAULT
MOV
STOSW
STOSW
AX,0101H
ENA8LE TI MER
IN
INTERRUPTS
AL,INTAOI
AL,OFEH
J"P
,.,
OUT
INTA01,AL
AND
RS232 OEFAULT=OI
ENABLE T I MER
I/O DELAY
INTERRUPTS
CHECK CMOS BATTERY AND CHECKSUM
R 20
J"P
@MFG TST ,MFG LOOP
81 DR
F15C
MFG JUMPER?
GO IF NOT
8YPASS IF YES
"OV
CALL
AL, CMOS 0 I AG+NM I
CMOS_READ
ADDRESS 0 I AGNOSTI C STATUS 8YTE
READ I T FROM CMOS
"OV
TEST
JNZ
SI,OFFSET EI61
AL,8AD BAT
81_ER -
LOAD 8AD 8ATTERY MESSAGE
BATTERY 8AD?
01 SPLA Y ERROR IF 8AD
"OV
TEST
JZ
S I ,OFFSET E I 62
AL,8AD CKSUM+BAD CONF I G
C_OK
-
LOAD CHECKSUM 8AO MESSAGE 162
CHECK FOR CHECKSUM OR NO 0 I SKETTE
SK I P AND CDNT I NUE TEST I NG CMOS CLOCK
CALL
OR
E MSG
8P,08000H
SHORT H_OK1A
ELSE DISPLAY ERROR MESSAGE
FLAG "SET SYSTEM OPTIONS· DISPLAYED
SKIP CLOCK TESTING IF ERROR
TEST
JNZ
J"P
161
TEST CLOCK UPDATING
C OK:
D-OK:
E:=OK:
F _OK:
MOV
SU8
MOV
CALL
TEST
JNZ
LOOP
DEC
JNZ
MOV
CALL
8L,04H
CX,CX
AL,CMOS REG A+NMI
CMOS READ
AL,80H
G OK
E-OK
Be
o
OK
SI ,OFFSET E 1 63
E_MSG
SET CMOS DIAGNOSTIC STATUS TO 04
"OV
CALL
OR
XCHG
CALL
J"P
AX,X·CMOS DIAG+NMI
CMOS REAOAL. CMOS CLK FA I L
AL,AH
CMOS WR I TE
SHORT H_OK
OUTER LOOP COUNT
I NNER LOOP COUNT
GET THE CLOCK UPDATE 8YTE
CHECK FOR UPDATE
GO I F YES
TRY AGAIN
DEC OUTER LOOP
TRY AGAIN
PRINT MESSAGE
IN PROGRESS
(CLOCK ERROR)
SET CLOCK ERROR
GET THE CURRENT STATUS
SET NEW STATUS
GET STATUS ADDRESS AND SAVE NEW STATUS
MOVE NEW 01 AGNOST I C STATUS TO CMOS
CONT INUE
CHECK CLOCK UPDATE
"OV
"OV
CALL
TEST
LOOPNZ
JCXZ
CX,800
AL,CMOS REG A+NMI
CMOS READ
AL,80H
I OK
F::::OK
LOOP COUNT
CHECK FOR OPPOSITE STATE
TRY AGAIN
PRINT ERROR
IF TIMEOUT
CHECK MEMORY SIZE DETERM I NED = CONF I GURA T I ON
"OV
CALL
TEST
JZ
AL, CMOS 0 I AG+NM I
CMOS READ
AL,W-MEM SIZE
H_OKTA
-
GET THE STATUS BYTE
WAS THE CONFIG= MEM SIZE DETERMINED?
GO I F YES
--
MEMORY SIZE ERROR
MOV
CALL
S I ,OFFSET E 164
E_MSG
PRINT SIZE ERROR
01 SPLAY ERROR
CHECK FOR CRT ADAPTER ERROR
R DC
H_OK1A:
@MFG ERR FLAG, OCH
S I ,OFFSET E401
H_OKI8
CHECK FOR MONOCHROME CRT ERROR
LOAD MONOCHROME CRT ERROR
GO IF YES
JNZ
"OV
@MFG ERR FLAG. ODH
J OKSI ,OFFSET E501
CHECK FOR COLOR CRT ADAPTER ERROR
CONT I NUE I F NOT
CRT ADAPTER ERROR MESSAGE
CALL
E_MSG
eMP
"DV
JZ
R 00
e"p
CHECK FOR MULTIPLE DATA RATE CAPA81L1TY
"OV
IN
AND
C"P
DX,03FIH
AL,OX
AL,!1111000B
AL,010100008
O/S/P DIAGNOSTIC REGISTER
READ O/S/P TYPE CODE
KEEP ONLY UN I QUE CODE FOR 0/ S /P
D/S/P CARD - MULTIPLE DATA RATE?
TEST2
5-69
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06110/85
POST TESTS AND INITIALIZATION ROUTINES
!32!
1322
1323
! 324
1325
1326
1327
1328
! 329
t 330
1331
1332
1333
t 334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1-13
06-10-85
06C8 74 46
JZ
.J_OK3
IF SO JUMP
06CA
06CD
06CE
0600
0602
BA
EC
24
3C
74
MOV
IN
AND
eMP
JZ
OX,05F7H
AL,OX
AL,II t 10000B
AL,IOIOOOOOB
J_FAIL
F I XED 0 I SK 0 I AGNOSTI C REG I STER
READ F I XED DISK TYPE CODE
KEEP ONLY UNIQUE CODE FOR FlO
F I XED 0 I SK ADAPTER ?
MUST BE COMBO ELSE ERROR
0604
0606
0008
060B
060B
06DC
060E
06EO
06E2
ObE4
ObEb
ObE8
06EA
06EC
ObEC
ObEF
06FI
06F2
ObF4
06F5
06Fl
06F9
06F8
ObFC
06FE
06FF
0101
83 OF
28 C9
BA OIFl
MOV
SUB
MDV
BL,OFH
eX,ex
OX,OlF7H
HARD FILE STATUS PORT
IN
TEST
JZ
LOOP
DEC
JNZ
AND
JZ
JMP
AL,OX
AL,080H
J OK2
J-OKI
Be
J OKI
AC,OCH
J OK3
SHORT J_FAIL
GET THE STATUS
I S THE CONTROLLER BUSY?
CONTINUE IF NOT
TRY AGAIN
DECREMENT OUTER LOOP
TRY AGA I N I F NOT ZERO
BITS 2 & 3 " 0 IF MULTI DATA CAPABLE
GO IF YES
NO MULTIPLE DATA RATE CAPABILITY
MOV
MOV
OUT
JMP
IN
eMp
JNZ
MOV
OUT
JMP
IN
eMP
JZ
OX,IF4H
AL,055H
DX,AL
VERIFY MULTIPLE DATA RATE CAPABLE
WR I TE TO THE CYL I NDER BYTE
OE 0016 R 40
OR
ttMFG ERR FLAG+I,DSK FAIL;
0000 E
0000 E
IE
MOV
CALL
JMP
SI,OFFSETE601
E MSG
SHORT FISC
OR
OlILASTRATE,OUAL
FO
AD
2F
OUTER LOOP COUNT WA IT FOR BUSY OFF
J_OKI :
EC
A8
74
E2
FE
75
24
74
EB
80
OC
F9
CB
F5
OC
26
17
J_OK2 :
BA
BO
EE
EB
EC
3C
15
BO
EE
EB
EC
3C
74
134b
1341
! 348
1349
1350
1351
(352
1353
1354
1355
1350
1351 0103
1358 0103 80
1359
1360 0108 BE
1361 070B E8
1362 010E EB
1363
13640710
13650710 80
1366
1361
1368
13690715 BO
13100111 E6
1371 0119 E8
1312
1313
1314
1375 011C E6
1316 071F 8A
1317 0723 OA
1318 0125 74
1319012180
1380 072C B4
1381 012E
1382 072E BO
1383 0130 E8
1384 0133 A8
1385 0735 75
1386
1367 0131 BO
138e 0139 E8
1389 013C 24
1390 073E 3A
1391 0740 74
f 392
1393 0742 22
1394 0744 75
1395
1396 0746 E8
1391
1398
1399 0749
1400 0749 BO
1401 074B E6
1402
1403 0140 BO
1404 014F E8
1405 0152 3C
1406 0154 14
1401
1408 0156 Ee
1409
1410
1411
1412
1413
1414
1415
1416
1411 0159
1418 0159 FB
1419 015A BO
1420 015C E6
1421 015E E8
1422 0761 BO
1423 0163 E6
1424 0166
1425
1426
1427
1428 0166 2A
1429 0168 E6
1430 016A EB
1431 016C E6
1432 016E BA
1433 0711
1434 0711 8E
5-70
05Fl
0lF4
55
00
55
OA
AA
00
AA
00
'.2
I/O DELAY
CHECK DATA WRITTEN" DATA READ
AL,DX
AL,055H
..I FAIL
AL,OAAH
DX,AL
GO IF NOT
WR I TE ANOTHER PATTERN
"2
I/O DELAY
AL,DX
AL,OAAH
.J_DK3
I S DATA PATTERN THE SAME?
GO IF SO
J_FAIL:
-
-
-;
;
;
;
<><><><> <> <> <><><> <> <><> <>
<><> 01 SKETTE FAILED
GET ADDRESS OF MESSAGE
GO PR I NT ERROR MESSAGE
SK I P SETUP I F ERROR
J_OK3:
OE 0088 R 01
;-----
TURN ON DSPICOMBO FLAG
INITIALIZE FLOPPY FOR DRIVE TYPE
3D
80
0000 E
MOV
OUT
CALL
0000 E
26 0091 R
E4
07
DE 0010 R 40
FF
CALL
MOV
OR
JZ
OR
MOV
OOS
AH,(tDSK STATE+l
AH,AH
-
8E
0000 E
CO
22
MOV
CALL
TEST
JNZ
AL,CMOS DIAG+NMI
CMOS READ
AL,BAO BAT+BAD CKSUM
ROM_SCAN I
BATTERY I CHECKSUM OK
BYPASS DISK SETUP I F NOT
90
0000 E
OF
C4
07
MOV
CALL
ANa
eMp
JE
AL,CMOS DISKETTE+NMI
CMOS READ
AL,OOFH
AL,AH
FISC
ADDRESS DISKETTE TYPE BYTE
GET 0 I SKETTE TYPES
LOOK AT SECOND DR I VE TYPE DEF I NED
ARE BOTH I NO I CATORS ZERO
SKIP IF NO SECOND DRIVE
C4
03
ANa
JNZ
AL,AH
FI50
ARE BOTH INDICATORS NON-ZERO
SKIP IF DRIVE FOUND AND DEFINED
0000 E
CALL
CONFIG_BAD
SET BAD_CONFIG
AL,3DH
MFG PORT ,AL
DSKETTE_SETUP
<><><> <> <><><><><><><> <>
<><> CHECK PO I NT
3D <><>
INITIALIZE FLOPPY
CHECK FOR 2ND 0 I SKETTE DR I VE
INSURE DATA SEGMENT
GET STATE OF SECONO DRIVE
IS THERE A DRIVE 2 ATTACHED?
SKIP IF NOT
PTR 4lEQUIP FLAG,40H; ELSE SET SECOND DRIVE INSTALLED
AH,OFFH
; SET TEST MASK FOR DR I VE PRESENT
~~~~
FISC:
GET THE CMOS DIAGNOSTIC STATUS
IN CMOS_DIAG
INiTiALIZE HARD FILE
3E
eo
MOV
OUT
AL,3EH
MFG_PDRT ,AL
92
MOV
CALL
eMP
JZ
AL,CMOS DISK+NMI
CMOS READ
AL,oR
ROM_SCANI
I NSURE TYPE IS DEF I NED
BYPASS DISK SETUP I F NOT
CALL
DISK_SETUP
INITIALIZE HARD FILE(SI
0000 E
00
03
0000 E
;
;
- ~~~~ ~ ~ - - - -- - ---- - - ---- - - - --- -- - - - - - - - - - - - -- - - - - - - ----- --
-
OA
TEST2
STI
M~
OUT
CALL
MOV
CALL
ROM_SCAN:
; -----
CO
02
00
04
C800
I NSURE CMOS DEF I NES TYPE OF F I XED 0 I SK
TEST. 22
CHECK FOR OPTIONAL ROM FROM C800->EOOO IN 2K BLOCKS
:
(A VALID MODULE HAS 'S5AA' IN THE FIRST 2 LOCATIONS:
LENGTH INDICATOR (LENGTH/512} IN THE 3RD LOCATiON
:
AND TESTIINIT. CODE STARTING IN THE 4TH LOCATiON)
~~~
3B
eo
0000 E
OA
0000 E
<><><><><><><><><><> <><>
<><> CHECKPO I NT
3E <><>
ALLOW
~,~H
MFG PORT ,AL
DDSAL,10
PRT _HEX
INTERRUPTS
000000000000
<><> CHECKPOINT
38 <><>
SET REAL MODE DATA SEGMENT
LINE FEED ON DISPLAY
SET DMA MASK AND REQUEST REG I STERS
SUB
OUT
JOP
OUT
MOV
ROM SCAN2:
MOV
AL,AL
DMAI8+2,AL
SENO ZERO TO MASK REG I STER
DMAI8+4,AL
oX,oceOOH
SEND ZERO TO REQUEST REG I STER
SET BEG I NN I NG ADDRESS
'.2
DS,DX
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATiON ROUTINES
1435 0113 51
1436 0114 BF ,01,,01,55
1431 0111 2B DB
1438 0119 88 01
1439 0118 3B C1
1440 0110 SF
1441 011E 15 05
1442 0180 E8 0000 E
1443 0183 EB 04
1444 0185
1445 0185 81 C2 0080
1446 0189
1441 0189 81 FA EOOO
1448 0180 1C E2
1449
1450
1451
1452 018F E8 0000 E
1453 0192 E4 64
1454019424 10
1455 0196 14 02
1456 0198 EB OB
1451 019,01,
1458019,01, 80 OE 0016
1459
1460
1461 019F SE 0000 E
1462 01A2 E8 0000 E
1463 01,01,5
1464
1465
1466
1461
1468 01A5 BF 0905 R
1469 01,01,8 8E 0000
1410 01AB
1411 01,01,8 2E: 88 15
1412 01AE 80 ,01,,01,
1413 0180 EE
1414 0181 EB 00
1415 01B3 IE
1416 0184 EC
1471 0785 IF
1418 0786 3C ,01,,01,
1479 07B8 75 06
1480 07BA 89 94 0008
1481 078E 46
1482 07BF 46
1483 07CO
1484 07CO 47
1485 07CI 47
1486 07C2 81 FF 090B
1481 07C6 75 E3
1488
1489
1490
1491 07C8 8B 0000
1492 07C8 BA 03FA
1493 07CE EC
1494 07CF ,01,8 F8
1495 0701 75 08
1496 0703 C7 81 0000
1491 0709 43
1498 070A 43
1499 0708 BA 02FA
1500 070E EC
1501 07DF A8 F8
1502 07El 75 08
1503 07E3 C7 81 0000
1504 07E9 43
1505 07EA 43
1506
1501
1508
1509 07EB
1510 07ES 8B C6
1511 07ED Bl 03
1512 07EF 02 C8
1513 07Fl OA C3
1514 01F3 ,01,2 0011 R
1515
1516
1511
1518 07F6 E8 0000 E
1519
1520
1521
1522 07F9 80 40
1523 07F8 E6 80
t 524
1525 07Fo SF 0067 R
1526 0800 33 CO
1521 0802 89 05
1528 0804 D8 E3
1529 0806 EB 00
1530 0808 09 3D
1531 080A 60
1532 080B 61
1533 080C 81 25 IF3F
1534 0810 81 3D 033F
1535 0814 75 13
1536
1537 0816 98 DO 3D
1538 0819 60
1539 081,01, 61
1540 0818 F1 05 888F
1541 081F 75 08
1542
1543 0821 E4 A I
1544 0823 24 OF
1545 0625 84 02
15460821 E6 AI
1547 0829
15480829,01,0 0010 R
PUSH
MOV
SUB
MOV
CMP
POP
"NZ
CALL
"MP
NEXT ROM:
ADD
ARE WE DONE:
- CMP
"L
;-----
1-14
06-10-85
NEXT ROM
ROM CHECK
SHORT ARE_WE_DONE
SAVE WORK REGISTER
GET TEST PATTERN
SET BX=OOOO
GET 1 ST WORD FROM MODULE
= TO 10 WORD?
RECOVER WORK REG I STER
PROCEED TO NEXT ROM I F NOT
CO CHECK OUT MODULE
CHECK FOR END OF ROM SPACE
DX,ooaOH
PO I NT TO NEXT 2K ADDRESS
DX,OEOOOH
ROM_SCAN2
AT EOOOO YET?
GO CHECK ANOTHER ADD.
01
DI,OAA55H
8X,BX
AX, (BX)
AX,DI
01
I F NOT
TEST FOR KEYBOARD LOCKED
CALL
IN
AND
JZ
JMP
005
AL,STATUS PORT
AL,KYBD INH
KEYI
SHORT KEY 1 0
OR
'L'MFG_ERR_FLAG+ I ,KEY_FA I L;
ASSUME
MOV
CALL
DS:DATA
S I ,OFFSET E302
E_MSG
SET OAT A SEGMENT
IS KEY80ARO UNLOCKED?
NO - SET ERROR FLAGS AND PR I NT MESSAGE
GO IF OFF
KEYI:
R 80
<><><><> <> <> <> <><> <><><><> <>
<><> KEYBOARD I S LOCKED <><>
PRINT LOCKED MESSAGE
(302)
KEY10:
; ====================
MOV
"OV
oI
,OFFSET F4
51,0
OFFSET OF PRINTER ADDRESS TABLE
MOV
MOV
OUT
"MP
PUSH
IN
POP
CMP
"NE
MOV
INC
INC
DX,CS:[DI)
AL,OAAH
DX,AL
eET PRINTER 8ASE ADDRESS
WRITE DATA TO PORT A
$.2
I/O DELAY
BUS SETTL I NG
READ PORT A
INC
INC
CMP
"NE
01
01
01 ,OFFSET F4E
FI6
F16:
R
OS
AL,DX
OS
AL,OAAH
FI1
~~R INTER_BASE [s I ] ,OX
DATA PATTERN SAME
NO - CHECK NEXT PR INTER CARD
YES - STORE PRINTER 8ASE ADDRESS
I NCREMENT TO NEXT WORD
5I
F17:
R
POINT TO NEXT BASE ADDRESS
ALL POSSIBLE ADDRESSES CHECKED?
PRT_BASE
~~~~~=~~~~~===
~~~=====~~:~==
R 03F8
F18:
R 02F8
;
-----
F19:
MOV
IN
TEST
JNZ
~~~
DX,3FAH
AL,DX
AL,OF8H
FI8
:~S232_BASE (BX), 3F8H
INC
MOV
IN
TEST
JNZ
MOV
INC
INC
8X
DX,2FAH
AL,DX
AL,OF8H
FI9
(IIRS232 BASE(BX},2F8H
8X
8X
POINTER TO RS232 TABLE
CHECK IF RS232 CARD 1 ATTACHED?
READ I NTERRUPT 10 REG I STER
SETUP RS232 CARD # 1 ADDRESS
CHECK IF RS232 CARD 2 ATTACHED
READ I NTERRUPT 10 REG I STER
BASE END
SETUP RS232 CARD #2
~~~" ~~" ;~Q~ ~~ :~~~~: ~~ =~~~ ~ ~~~~ '" ~~~B~~ = ~~ = ~~ ~ ~;~~~ = ~~~ =~~~~~ =~~~~~
; = = = = = = = = = = == == = = = = = = = = = = = = == = == ~ = B~~~ = ~~~ ~ = = == == = == = == == = = == = =::=
MOV
MOV
ROR
OR
MOV
AX,SI
;
CL,3
;
AL,CL
;
AL,BL
;
BYTE PTR Il'IEQU I P _FLAG+ 1 ,AL
SI HAS 2- NUM8ER OF RS232
SHIFT COUNT
ROTATE RIGHT :3 POSITIONS
OR IN THE PRINTER COUNT
; STORE AS SECOND BYTE
INSURE CMOS CLOCK HAS VALID HOURS.MINUTES.SECONDS
CALL
;-----
;
SET_TOO
INSURE CMOS CLOCK
ENA8LE HARDWARE INTERRUPT IF MATH PROCESSOR
MOV
OUT
AL,40H
MFG_PORT, AL
MOV
XOR
MOV
FNINIT
"MP
FNSTCW
PUSHA
POP A
AND
CMP
"NE
01 ,OFFSET 'L'IO_ROM_INIT
AX,AX
WORD PTR [DII,AX
S'2
IS VALID
(80287)
<> <> <> <><><><><><> <><> <>
<><> CHECKPO I NT 40 <><>
ADDRESS WORK STORAGE LOCATION
CLEAR WORK REGISTER
(AH)= 0 (NO 287)
CLEAR THE WORK LOCATION
INITIALIZE THE 60281 WITH NO WAJ1
; DELAY
; WR I TE THE CURRENT 80281 CONTROL WORD
; TIME FOR 60287 TO RESPOND
WORD PTR
{DI}
WORD PTR
WORD PTR
NO_287
(01},0IF3FH
(01] ,0033FH
CLEAR UNUSED 80287 81TS
IS THE 80287 INSTALLED?
GO IF MATH PROCESSOR IS NOT INSTALLED
FSTSW
PUSHA
POPA
TEST
"NZ
WORD PTR
(DI)
STORE THE STATUS WORD (WITH WAIT)
TIME FOR 80281 TO RESPOND
WORD PTR
NO_26T
[DI},088SFH
ALL BITS SHOULD 8E OFF
GO IF NOT INSTALLED
IN
AND
MOV
OUT
AL,INTBOI
AL,ODFH
AH,002H
INTBOI,AL
GET THE SLAVE INTERRUPT MASK
ENABLE 80287 INTERRUPTS
SET WORK REG I STER FOR 80287 FOUND
MOV
AL,8YTE PTR IPEQU I P _FLAG
GET LOW EQU I PMENT FLAG
(OR ERROR)
NO_287:
TEST2
5-71
[8M PersQnal CQmputer MACRO Assembler
VersiQn 2.00
TEST2 ---- 06/10/85
FOST TESTS AND [NITIALIZATION ROUTINES
1549 082C 24
1550 082E 3A
1551 0830 T4
1552
1553083280
1554 0831 E8
1555 083A
1556
1551
1558 083A C1
1559
1560
1561
1562 0840 E4
1563 0842 24
1564 0844 E8
1565 0846 E6
1566 0848 C6
1561
1568
1569
1510 0840 C6
1571 085280
1512 0854 E8
1573 0851 89
1574 085A E8
1575 0850 80
1576
1577
1578
1579 0862 80
1580 0867 74
1581
1582086984
1583 0868 82
1584 0860 FE
1585 0871 CO
1586 0873 FE
1581 0877 12
1588
1589 0819 E8
1590 081C
1591
1592
1593
1594
1595 081C 08
1596 081E 74
1591
1598 0880 80
1599 0885 8A
1600 0888 15
1601
1602
1603
1604 088A C6
1605 088F E4
1606 0891 24
1607 0893 15
1608
1609 0895 8A
1610 0898
1611 0898 E8
1612 0898 80
16130890 E8
1614 08AO A8
1615 08A2 14
1616
1617 08A4 F1
1618 08A8 15
1619
1620 08AA 8E
1621 08AD E8
1622
1623
1624
1625 0880
1626 0880 E4
1621088224
1628 0884 15
1629
1630 0886 6E
1631 0889 E8
1632
1633
1634
1635 OBBC
1636 08Be 8E
1637 oaBF E8
1638
1639
1640
1641 OaC2 64
! 642 08C4 2B
1643 08C6 CO
1644 oaca
1645 OaC8 BO
1646 08CA E6
1641 08CC 84
1648 08CE CO
1649 0800 80
1650 0803 15
1651 0805
16520805 F6
1653 080A 75
1654 080e E9
r655 080F 80
1656 08E4 14
1657
1658 08E6 BA
1659 08E9 E8
1660
1661
1662
5-72
02
C4
08
JE
AL,002H
AL,AH
OK_281
STR I P OF~ OTHER 8 ITS
DOES CMOS MATCH HARDWARE ?
SK I P IF EQU I PMENT FLAG CORRECT
XOR
CALL
BYTE PTR @EQUIP FLAG, 2H
CONFIG_BAD
-
ELSE SET 80281 BIT TO CORRECT VALUE
AND SET THE CONF[GURATION ERROR FLAG
AND
CMP
36 0010 R 02
0000 E
1-15
06-10-85
OK 281:
;-=---
06 0011 R 0000
SET KEYBOARD STATE FLAGS
MDV
;----21
FC
00
21
06 0015 R 00
WORD PTR olIKB_FLAG,O
ENABLE KEYBOARD/TIMER
IN
AND
AL,INTAOI
AL, OFCH
ENABLE T I MER AND KEYBOARD
I/O DELAY
'.2
JMP
INTAOI,AL
II'MFG_ERR_FLAG,O
OUT
MDV
READ KEYBOARD
06 0096 R AD
F2
0000 E
061A
0000 E
26 0096 R IF
RESET ALL KEYBOARD STATUS FLAGS
INTERRUPTS
10 TO
I NTERRUFTS
CLEAR MFG ERROR FLAG
I NIT I AL I ZE KEYBOARD TYPE AND NUM LOCK
:~~K~L~~A~ ,~g_ID+SET_NUM;L~ET TH; S S~~S~~~~ ~~y~g~~~N~ /~~Q~~~T
SND DATA
; USE KEYBOARD TRANSM] SS I ON ROUT I NE
CX,To58
; SET DELAY COUNT TO 25 M]LLlSECONDS
WAITF
; WAIT FOR READ ]0 RESPONSE (20 MS)
PKB_FLAG_3,NOT RD_[D+LC_AB+SET_NUM_LK
I RESET READ 10 COMMAND
MOV
MDV
CALL
MOV
CALL
AND
CHECK FOR SECOND F I XED 0 I SK PRESENT BUT NOT DEF I NED
3E 0015 R 02
13
eMP
10
81
06 0015 R
13
DE 0015 R
03
MDV
MOV
JE
INC
INT
DEC
JC
0000 E
CALL
FI5G:
II'HF_NUM,2
FI5G
CHECK FOR TWO DR I VES DEF I NED 8Y CMOS
SKIP TEST IF TWO DRIVES DEFINED
AH,OIOH
DL,081H
(tHF _NUM
13H
II'HF NUM
FI5G
GET TEST DR I VE READY COMMAND
POINT TO SECOND FIXED DISK
TELL 810S ]T HAS TWO DRIVES
CHECK READY THROUGH B] OS
RESTORE CORRECT COUNT (RETAIN CY)
SK I F I F SECOND DR I VE NOT READY
SECOND OR I VE NOT DEF I NED
SET CONFIGURATION BAD
CONF IG_8AD
- -- - - - - - - - - - - - - - - - - - - - - - - -~
I
TEST FOR ANY ERRORS
EO
55
OR
JE
3E 0012 R 64
0002
DE
CMP
MOV
JNZ
MFG RUN
06 0015 R AA
64
10
40
MOV
0000 E
BEEPS FOR ERROR (S)
ADDRESS CMOS
GET THE D]AGNOSTIC STATUS BYTE
CHECK FOR BAD HARDWARE CONF I GURAT] ON
SKIP IF NOT SET
TEST
JNZ
BP,08000H
ERR_WKEY
ELSE CHECK FOR E161/E162 POSTED
SK I P IF 0] SPLA YEO BEFORE NOW
MDV
SI,OFFSET E162
CALL
P _MSG
ELSE DISPLAY nOPTIONS NOT SET"
WITH NON HALTING ROUT[NE
C5 8000
06
0000 E
0000 E
CHECK FOR
ERR WKEY:
IN
AND
JNZ
0000 E
0000 E
] N MODE -> SET ERROR FLAG
@MFG ERR FLAG,OAAH
AL,S1'ATU5 PORT
AL ,KYBD INH
FI5A_O -
CALL
TEST
JZ
0000 E
20
DC
64
10
06
HUNLOCK SYSTEM UNIT KEYLOCK H MESSAGE REQUIRED
AL,STATUS PORT
AL,KYBD INH
ERR_WA ]1'2
CHECK r F RESUME MESSAGE NEEDED
I S THE KEYBOARD LOCKED
SK I P LOCK MESSAGE I F NOT
S [ ,OFFSET F3D I
P _MSG
ERROR MESSAGE FOR KEYBOARD LOCKED
CALL
DISPLAY
'(RESUME
MDV
ERR WAIT2:
MOV
CALL
=
3F
80
00
16
FC 38
F3
06 0012 R 20
03
0000 E
3E 0012 R 64
06
MDV
SUB
INT
ERRWAIT1:
MaV
OUT
MOV
INT
CMP
JNE
FI5A:
000 I
0000 E
;
RESUME ERROR MESSAGE
(ALTERNATE DISPLAY DEVICE)
AH, f
OX,OX
F]RST PRINTER
I1H
AL,3FH
MFG PORT ,AL
AH,OO
16H
AH,3BH
ERR_WAIT I
<> <><><><> <> <> <><><><><>
<><> CHECKPOINT 3F <><>
WAIT FOR
'Fl' KEY
TEST
JNZ
~~~~_TST,MFG_LOOP
~~G[~U~~TIN MODE
JMP
START r
;
BYTE PTR @RESET FLAG,64H;
FI58
-
GO LOOP POST
MFG RUN IN?
BYPASS BEEP [F YES
CMP
JZ
1 SHORT BEEP
; -----
TEST2
"Fl"
S I ,OFFSET F3D
P _MSG
IN]TIALIZE PRINTER
01
02
11
MFG RUN IN MODE?
2 SHORT BEEP COUNT FOR ERROR (S)
GO I F NOT
OX,S
MDV
;-----
BYTE PTR @RESET FLAG,64H;
OX, 2
ERR_WA I T
ERR BEEP
AL,CMOS 01 AG
CMOS READ
AL,8AD CONF]G
ERR_WKEY
MDV
ERR WAIT:
CALL
OE
0000 E
0000 E
CHECK (BP) = NON-ZERO
(ERROR HAPPENED)
SK I P PAUSE I F NO ERROR
I NO I CATE ERROR
CHECK KEY LOCK STATUS
I S THE KEYBOARD LOCKED
CONT] NUE MFG MODE I F NOT LOCKED
ELSE
5 SHORT BEEPS FOR MFG SETUP ERROR
IN
AND
JNZ
0005
(SP NOT ZERO)
(NO ERRORS)
IBM Personal Computer MACRO Assembler
Version 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
1663
1664 08EC E8 0000 E
1665
1666
1667
1668 05EF 2A E4
1669 08F 1 AO 0049 R
1670 08F4 CO 10
167 \
1672
1673
1674 OeF6 B9 01F4
1675 08F9 BF OOAO
1676 08FC 2B CO
1 b77 OBFE 8E CO
16780900 26: 8905
1679 0903 83 C7 02
1680 0906 E2 F8
1 b81
1652
1683
1684 0908 88 ---- R
1685 0908 8E DO
168b 0900 BC 0400 R
I b87
1688
1689
1690 0910 E4 21
1691 091224 FB
1b92 0914 EB 00
16930916 E6 21
1694
1695
169b
1697 0918 80 3E 0072
1698 0910 75 02
1699 091F EB 5C
1700
1701
17020921
17030921 E4 Al
1704 0923 24 FD
1705 0925 EB 00
17060927 E6 Al
1707
1708
1709
1110
171 I
1712
1113
1714
17 I 5 0929 BO 41
I 7 16 092B E6 80
1717
17180920 BO 80
1719 092F E6 70
1120
1721
1722
1723 0931 C6 Ob 0072
1724 0936 B8 EOOO
1725 0939 8E co
1726 0938 2B FF
1727 0930 26: 8B 05
1728 0940 53
1729 0941 5B
1730 0942 3D AA55
1731 0945 9C
1132 0946 26: 89 05
1 733 0949 E4 61
1734 0948 OC OC
1735 0940 Eb 61
1736 094F 24 F3
1731 0951 E6 61
1738 0953 90
1739 0954 75 27
1740
1141
1742
1743 0956 1E
\ 744 0957 06
1745 0958 IF
1746 0959 28 08
1147 0958 E8 0000 E
1745 095E IF
1749 095F 75 IC
1750
1751
1752
1753 0961 80 00
1754 0963 E6 70
1755
1 Hi6 0965 E4 61
1757 0967 24 F3
1758 0969 E6 61
1759
1760 0968 C7 06 0067
1761 0971 8C 06 0069
1762
1763 0975 80 42
1764 0977 E6 80
1765
1766
1767
1768 0979 FF IE 0067
1769
\ 710
1711
1772
1773 0970 BO 00
1714 097F E6 70
1775 09BI E4 61
1776 0983 24 F3
F158:
CALL
;-----
CLEAR DISPLAY SCREEN
SUB
MOV
INT
1-16
06-10-85
SET _TOO
CLEAR FLAGS
AH,AH
AL, II!ICRT MODE
10H
-
CLEAR SCREEN
CLEAR DESCR[PTOR TABLES
F20:
F20_A:
MOV
"OV
SUB
MOV
MOV
ADO
LOOP
CLEAR 1K
POINT ES TO START OF DESCRIPTORS
CX,0500
OI,SYS JOT LaC
AX,AX ES,AX
ES:[DJ],AX
OJ ,2
F20_A
CLEAR
POINT TO NEXT LOCATION
CONTINUE TILL DONE
SET POST SYSTEM STACK
MOV
MOV
MOV
GET THE POST STACK SEGMENT
AX, ABSO
SS, AX
SP,OFFSET II!ITOS
ENSURE THAT MASTER LEVEL 2 ENABLED
IN
AND
JMP
OUT
AL,INTAOI
AL,OFBH
GET THE CURRENT MASK
$,2
I/O DELAY
[NTAOI,AL
TEST FOR MFG RUN- I N TEST
R b4
CMP
JNZ
JMP
BYTE PTR ,pRESET FLAG, 64H;
END-287
SHORT SHUT4
I S THE THE MFG RUN- [N TEST?
GO IF NOT
BOOT LOAD IF YES
,
UNMASK SLAVE HARDWARE INTERRUPT 9 (LEVEL 71)
END 287:
IN
AL,INTBOI
GET THE CURRENT MASK
AL,OFDH
AND
JMP
1+2
I/O DELAY
OUT
I NTBO 1 ,AL
SET NEW MASK
;
;
;
;
;
- - - - - - - - - - -- - - -- -- - - - - - - - - - - - - -- -- --- - - - - - -- -- - - -- - - - - - -- - -- - - - --TEST FOR SYSTEM CODE AT SEGMENT EOOO: 0
FIRST WORD
AA55H
LAST 8YTE
CHECKSUM
ENTRY POINT = FIRST BYTE + 3
I F TEST I S SUCCESSFUL A CALL FAR TO THE ENTRY
R 00
=
=
MOV
OUT
AL, CMOS REG D+NM I
CMOS_PORT ,AL
;
"OV
MOV
MOV
SUB
"OV
PUSH
POP
; CLEAR FLAG
; SEGMENT OF SYSTEM CODE
e"p
8YTE, PTR @RESET FLAG. 0
AX,OEooaH
ES.AX
bJ,OJ
AX,ES: [OJ]
BX
BX
AX,OAA55H
IN
ES:[DI),AX
AL,PORT B
OR
OUT
AND
OUT
POPF
JNZ
OFF AND CMOS AT bEFAULT
; CHECK FOR AA55
BUS SETTLE
SAVE FLAGS
CLEAR POSS I BLE PAR I TY CHECK
~~R~A~:~~R _OFF
TOGGLE
I/O-PAR I TY CHECK ENABLES
AL.RAM PAR ON
PORT_B:AL RESTORE FLAGS
CONTINUE
SHUT4
OS
ES
;
SET SEGMENT TO TEST
BX,BX
ROM CHECKSUM
OS SHUT4
;
STARTING OFFSET
as
ENABLE NMI
AND
; RESTORE DATA SEGMENT
; GO I F CHECKSUM NOT OK
I/O-MEMORY PARITY CHECKS
"OV
OUT
~~O~:~~R~~~LD
ENABLE NMI
IN
AL,PORT B
AL, RAM PAR ON
PORT_8:AL -
ENABLE PAR I TY
ENABLE MEMORY PARITY CHECK
"OV
"OV
: : g:~g~:~~~~E~003H
SET THE OFFSET
SET THE SEGMENT
"OV
OUT
AL,42H
MFG_PORT, AL
AND
OUT
R 0003
R
INSURE NMI
CHECKSUM SYSTEM CODE
PUSH
PUSH
POP
SUB
CALL
POP
JNZ
;-----
<><><><><><><> <> <> <> <> <>
<><> CHECKPOINT 41 <><>
AL,41H
MFG:,...PORT • AL
PUSHF
"OV
; ---
po JNT [S EXECUTED
"OV
OUT
AND SET DEFAULT ADDRESS
/
I/O CHECK
<><><><><> <> <><><> <><> <>
<><> CHECKPO I NT 42 <><>
EX I T TO SYSTEM CODE
R
CALL
GO TO SYSTEM CODE
VIA ,CALL THROUGH DATA AREA LOCATION
; -----
ENABLE NMI
SHUT4:
MOV
OUT
IN
AND
INTERRUPTS + ENTRY FROM SHUTDOWN WITH BOOT REQUEST
AL, CMOS REG 0
CMOS PORT, AL
AL,PORT B
AL,RAM_PAR_ON
ENABLE NMJ
AND SET DEFAULT ADDRESS
ENA8LE PAR I TY
ENABLE MEMORY PARITY CHECK
TEST2
I
I/O CHECK
5-73
I BM Persona I Computer MACRO Assemb I er
Vers i on 2.00
TEST2 ---- 06/10/85
POST TESTS AND INITIALIZATION ROUTINES
1777
1778
1779
1780
1781
1782
1783
1184
1785
1786
1181
1788
1789
1190
1191
1192
1193
1194
1795
1796
1797
1198
1199
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
15 I 8
1519
1820
1821
1822
1823
1824
1825
1826
1827
1525
1529
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
0985 E6 61
OUT
PORT_B,AL
0987 BO 43
0989 E6 80
098B FB
"OY
OUT
5TI
AL,43H
MFG_PORT ,AL
INT
19H
098C CD
19
PADING
B9 OOOF
PADI:
BO
E8
E2
90
E8
C3
<><><> <> <> <> <> <> <> <> <> <>
<><> CHECKPOINT
43 <><>
ENABLE I NTERRUPTS IF 0 I SABLEO
GO TO BOOT LOADER
HL T
098E F4
098F
098F
0992
0992
0994
0991
0999
099B
099E
099F
1-17
06-10-85
20
0000 E
F9
20
0000 E
099F
099F 50
09AO BB OOOA
PRT OK
-
PROC
NEAR
CX,I5
INSERT PADD I NG
GET BLANK CHARACTER COUNT
"OV
CALL
LOOP
"OV
CALL
RET
ENDF
AL,
PRT HEX
PADT
AL, ,- ,
PRT _HEX
GET FILL SPACE
WR I TE A SPACE
LOOP TILL I NSERT DONE
GET DASH CHARACTER
WRITE TO DISPLAY
PROC
PUSH
NEAR
"OV
BX, 10
PRINT "00000 K8 OK"
SAVE WORK REG I STER
SET DEC I MAL CONVERT
"OY
AX
CONVERT AND SAVE
09A3
09A6
09A8
09A8
09AA
09AC
09AF
0980
89 0005
28 FF
33
F1
80
52
E2
02
F3
CA 30
"OV
SUB
PRT DIV:
XOR
OIV
OR
PUSH
LOOP
F6
eX,5
01,01
a I SFLA Y
OX,DX
BX
OL ,30H
OX
PRT_DIV
OF 5 NIBBLES XX,XXX KB
REGEN BUFFER POS I T 1ON
DIViDE BY 10
MAKE INTO ASCII
SAVE
01 SFLA Y LAST OK MEMORY
0982 89 0005
09B5
0985 58
09B6 E8 0000 E
098947
098A E2 F9
098C 89 0007
098F BE 09CE R
09C2
09C2 2E: 8A 04
09C5 46
09C6 E5 0000 E
09C9 47
09CA E2 F6
09CC 58
09CD C3
09CE 20 4B 42 20 4F 48
0904 20
0905
=
0905
"OV
FRT DEC:
FOP
CALL
INC
LOOF
"OV
"OV
PRT LOOP:
MOV
INC
CALL
F38
F38 OK
F3B-PAD
.LIST
PRT_OK
;
;
RECOVER A NUMBER
MESSAGE
AL,CS:[Slj
51
PROT PRT HEX
INC
OJ
PRT LOOP
-
-
I NCREMENT BUFF PTR
POP
RET
AX -
RECOVER WORK REGISTERS
DB
DB
EQU
,
OK MESSAGE
PAD A SFACE
KB OK'
ENDP
--- -------------------PRINTER TABLE
F4
ow
ow
ow
F4E
LABEL
0908
090B
POST2
CODE
ENDP
ENDS
ENO
TEST2
I
01
; POINT TO DISPLAY REGEN BUFFER
PRT DEC
CX,OFFSET F3B PAD-OFFSET F3B
; LOAD MESSAGE LENGTH
51 ,OFFSET F3S; POINT TO PRINT' K8 OK','
LOOP
0905 03BC
0907 0318
0909 0278
09DB
5-74
CX,5
AX
PROT PRT HEX
03BCH
0378H
0278H
WORD
ADDRESS OF MONOCHROME PARALLEL ADAPTER
BASE ADDRESS STANDARD PARALLEL ADAPTER
ADDRESS OF ALTERNATE PARALLEL ADAPTER
I-I
IBM Personal Computer MACRO Assembler
Version 2.00
TEST3 ---- 06/10/85
POST EXCEPTION INTERRUPT TESTS
06-10-85
PAGE 118,121
TITLE TEST3 ---- 06/10/85
POST EXCEPTION INTERRUPT TESTS
.286C
.LIST
1-- ------------- - - - - - - - -- - - -- - - -- - - -- ----- - --- -TEST.20
;
ADDITIONAL PROTECTED (VIRTUAL MODEl TEST
DESCR I PT I ON
;
THE PROCESSOR I S PUT IN PROTECTED MODE AND
THE FOLLOW I NG FUNCT IONS ARE VER I F I ED
;
I
2
3
4
5
6
7
8
9
10
11
12
13
14
15
VER I FY PROTECTED MODE
THE MACHINE STATUS IS CHECK FOR VIRTUAL MODE
2. PROGRAMMED I NTERRUPT TEST
AN PROGRAMMED INTERRUPT 32 I S I SSUED AND
AND VERIFIED
3. EXCEPTION INTERRUPT 13 TEST
A DESCR I PTOR SEGMENT LIM I TIS SET TO ZERO
AND A WRITE TO THAT SEGMENT IS ATTEMPTED
AN EXCEPT I ON 13 I S EXPECTED AND VER I F I EO
LOT/SOT LTR/STR TEST
LOAD LOT REGISTER AND VERIFY CORRECT
LOAD TASK REGISTER AND VERIFY CORRECT
THEY ARE VERIFIED VIA THE STORE INSTRUCTION
5. THE CONTROL FLAGS OF THE 286 FOR 0 I RECT I ON
ARE VER I F I ED V I A THE STD AND CLD COMMANDS
I N PROTECTED MODE
BOUND INSTRUCTION TEST (EXCEPTION INT 5)
CREATE A SIGNED ARRAY INDEX WITHIN AND
OUTSIDE THE LIMITS.
CHECK THAT NO EXC 1NT
IF WITHIN LIMIT AND THAT AN EXC INT 5
OCCURS IF OUTSIDE THE LIMITS.
PUSH ALL POP ALL TEST
SET GENERAL PURPOSE REG I STERS TO 0 I FFERENT
VALUES ISSUE A PUSH ALL, CLEAR THE REGISTERS
I SSUE A POP ALL AND VER I FY CORRECT.
8. CHECK THE VERR /VERW I NSTRUCTI ONS
THE ACCESS BYTE I S SET TO READ ONLY THEN TO
A WR I TE ONLY AND THE VERR { VERW INSTRUCT 10NS
ARE VERIFIED.
9. CAUSE AN INTERRUPT 13 V I A A WR ITE TO A
READ ONLY SEGMENT
10. VERIFY THE ARPL INSTRUCTION FUNCTIONS
SET THE RPL FIELD OF A SELECTOR AND
VERIFY THAT CURRENT SELECTOR RPL IS SET
CORRECTLY.
I 1. VER I FY THE LAR I NSTRUCT I ON FUNCT IONS
12. VERIFY THE LSL INSTRUCTION FUNCTIONS
13. LOW MEG CH I P SELECT TEST
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
0000
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
0000
0000 E8 0000 E
0003 BO FO
0005 E6 80
POST3
PU8L IC
POST3
EXTRN
EXTRN
EXTRN
EXTRN
CMOS WR I TE: NEAR
DDS :NEAR
PROC SHUTDOWN: NEAR
SYSINITI :NEAR
ASSUME
PROC
CALL
CS:CODE
MOV
OUT
; -----
<> <><> <><> <> <> <> <> <> <> <>
<><> CHECKPOINT FO <><>
SET SHUTDOWN RETURN 1
MOV
CALL
0001 B8 018F
OOOA E8 0000 E
SET DATA SEGMENT
005
AL,OFOH
MFG_PORT ,AL
AX, PH+CMOS SHUT_DOWN+NMI
CMOS_WRITE
; ADDRESS FOR SHUTDOWN BYTE
SET ERROR EXIT (DOUBLE EXCEPTION? I
70
71
ENABLE PROTECTED MODE
72
13
74
75
16
0000
DOlO
0012
0015
BC
8E
BC
E8
MOV
MOV
MOV
0000
04
8000
0000 E
CALL
77
78
79
80
81
82
83
84
85
86
81
SET STACK FOR SYSINITI
SP,POST SS
SS, SP
SP,POST SP
SYSINITT
GO ENABLE PROTECTED MODE
SET TEMPORARY STACK
0018
OOIB
00 I 0
OOIF
0026
002C
002F
0031
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
B8 0008
8E CO
8E 08
26: C1 06 005A 0000
26 = C6 06 005C 00
BE 0058
8E 06
BC FFFD
AX, GOT PTR
ES ,AX DS,AX
ES:SS TEMP.BASE La WORD,O
BYTE PTR ES: (55-TEMP. BASE H I
SI,SS TEMP
SS,51SP,MAX_SEG_LEN-2
BYTE I ,0
88
89
90
91
92
0034 OF 01 EO
93
0031 A9 000 I
94
003A 15 03
95
003C E9 02CD R
96
97
003F 80 FI
98
0041 E6 80
99
100
101
102
0043 BO BO
103
0045 E6 88
104
0041 CD 20
105
0049 28 C9
106004BE488
101
0040 22 CO
108
004F EO FA
109
0051 14 03
110
0053 E9 02CD R
111
112
113
0056 BO F2
114
; -----
T7_1:
VER I FY PROTECTED MODE
SMSW
DB
TEST
JNZ
JMP
AX
OOFH,OOIH,OEOH
AX, VIRTUAL ENABLE
T11
ERROR_EX I T
MOV
OUT
AL.OFIH
MFG_PORT, AL
1NTERRUPT TEST
LOOPI:
MOV
OUT
AL,OBOH
DMA PAGE+OAH,AL
INT
SUB
IN
AND
LOOPNZ
JZ
JMP
32 CX,CX
AL,DMA PAGE+OAH
AL,AL LOOPI
T72
ERROR_EX I T
MOV
ARE WE
ERROR
I N PROTECTED MODE
IF NOT
<> <> <> <><><><> <> <> <> <> <>
<><> CHECKPOINT FI <><>
I PROGRAMMED
CAUSE AN EXCEPTI ON
T1_2:
GET THE MACHINE STATUS WORD
INTERRUPT
INTERRUPT 32)
SET EXCEPT I ON Fl-AG
FOR INTERRUPT 10
INTERRUPT
WA I T FOR 1NTERRUPT
DID THE
I NTERRUPT OCCUR?
M I 55 I NG
INTERRUPT
(GENERAL PROTECT I ON
INTERRUPT
1301
AL,OF2H
TEST3 5-75
1-2
IBM Personal Computer MACRO As.sembler
Version 2.00
TEST3 ---- 06/10/85
POST EXCEPTION INTERRUPT TESTS
115
116
117
118
119
0058 E6 80
005A 80 90
005C E6 88
120
121
122
139
140
141
142
143
144
,.5
,.8
,.9
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
19.
197
198
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
SET SEGMENT TO 0
;
LOAD ES
SET ES REGI STER
PUSH
POP
BYTE PTR ES TEMP
E5
-
CAUSE AN EXCEPTION
SUB
MOY
SUB
LOOP2:
IN
AND
LOOPNZ
"Z
"MP
13
INTERRUPT
01,01
AX,ES:[Oll
CX,CX
AL,OMA PAGE+OAH
AL,AL LOOP2
;
773
ERROR_EXIT
TH I S SHOULD CAUSE AND EXCEPT! ON
WA I T FOR INTERRUPT
DID THE
INTERRUPT OCCUR?
CONTI NUE I F INTERRUPT
MISSING INTERRUPT
; ------------------ - ---- - --- -- ---- ------;
;
VER I FY 286 LOT I SOT L TR I STR
J NSTRUCT IONS
DESCRIPTION
LOAD LOT. REGISTERS WITH A
OESCR I PTOR AND VER I FY CORRECT
; ------------------ - --- - ------------WR I TE TO 286 LOT REG I STER
0089
0089 80 F3
0088 E6 80
0080 8F 0078
0090 OF
0091
0091 88 07
0093
0091
0091 00
0093
MOY
OUT
MOY
POOOO
1?000 I
LA8EL
ORG
DB
ORG
01
-
P0002
SLOT
DB
LABEL
n0003
LA8EL
SUB
03 CO
ADO
ORG
00
DB
25 00F8
30 0078
75 18
ORG
AND
CMP
"NZ
REGISTER FROM THIS AREA
OOFH
8YTE
OX,OI
8YTE
OFFSET CS: pOOOO
OOOH
OFFSET CS:??OOOI
READ AND VERIFY 286 LOT SELECTOR
OF
<><> <><><><> <><><><> <><>
<><> CHECKPO I NT F3 <><>
AL,OF3H
MFG PORT ,AL
01 ,POST LOTR
;----009328 CO
0095
0096
0096
0098
0096
0096
0098
0098
0098
009E
LLOT
DB
LA8EL
MOY
AX,AX
AX
OOFH
8YTE
AX,AX
BYTE
OFFSET CS: n0002
OOOH
OFFSET CS: 710003
AX,OF8H
AX ,POST LOTR
ERROR
-
CLEAR AX
GET THE LOT SELECTOR
STRIP TI /RPL
CORRECT SELECTOR?
GO IF NOT
WRITE TO 286 TR
00 AD 8F 0068
00A3 OF
OOM
00A4 88 OF
00A6
00A4
OOM 00
OOM
MOY
LTR
08
n0004
n0005
ORG
ORG
00A6 28 CO
OF
??0006
88 C8
5-76
DB
LA8EL
MOY
n0007
LABEL
ORG
00
DB
25 OaF8
3D 0068
75 08
ORG
AND
CMP
"NZ
FD
9C
58
A9 0200
74 03
E9 02CD R
A9 0400
75 03
E9 02CD R
FC
9C
58
A9 0400
74 03
TEST3
01 ,POST TR
01
-
AX,AX
AX
OOFH
8YTE
CX,AX
8YTE
OFFSET CS: 1?0006
OOOH
OFFSET CS:??0007
AX,OF8H
AX,POST TR
ERROR
-
GET THE TR
REG I STER
CORRECT SELECTOR?
TEST 286 CONTROL FLAGS
STO
SET 0 I RECT I ON FLAG FOR DECREMENT
GET THE FLAGS
PUSHF
"Z
JMP
AX
AX ,0200H
T7 4
ERROR_EX I T
TEST
"NZ
"MP
AX ,0400H
T7.5
ERROR_EX I T
POP
TEST
ERROR;
T7_ 4:
REGISTER FROM THIS AREA
OOFH
8YTE
eX,OI
BYTE
OFFSET CS: 710004
OOOH
OFFSET CS: ?10005
VERIFY 286 TR REGISTERS
SUB
STR
; ----0083
00B4
00B5
00B6
0089
0088
008E
OOBE
OOCI
00C3
00C6
00C6
00C7
00C8
00C9
OOCC
LA8EL
DB
;-----
OOA8
00A9
00A9
00A8
00A9
00A9
OOAB
OOAB
OOAE
0081
LABEL
MOY
199
200
201
202
203
204
205
206
207
208
209
;
DATA ACCESS RIGHTS
MOY
MOY
MOY
;
150
151
152
153
154
155
162
163
164
165
166
167
OS:ES_TEMP.SEG_LlMIT,O
;-----
,.9
'.0
161
CPLO,
; -----
14.
147
148
156
157
158
159
;-----
0074 6A 48
0076 07
0077 28 FF
007926: 8805
007C 28 C9
007E E4 88
0080 22 CO
0082 EO FA
0084 74 03
0086 E9 02CD R
;
<><> CHECKPO I NT F2 <><>
; SET INTERRUPT 13. FLAG
; FOR THE INTERRUPT HANDLER
MODIFY DESCRIPTOR TA8LES
SET TEMPORARY ES DESCRIPTOR TO SEGMENT LIMIT
0064 C6 06 0040 93
0069 C6 06 004C 0 I
006E C7 06 004A 0000
130
131
132
133
13.
135
13.
137
138
MFG P.ORT ,AL
AL,9DH
OMA_PAGE+OAH,AL
;----005E C7 06 0048 0000
123
12.
125
126
127
128
129
OUT
MOY
OUT
06-10-85
CLO
PUSHF
POP
TEST
"Z
I NTERRUPT FLAG SHOULD 8E OFF
CONT [NUE I F OFF
GO IF NOT
CHECK 0 I RECT I ON FLAG
GO
IF NOT SET
CLEAR 0 I RECT I ON FLAG
INSURE 0 I RECT [ON FLAG
I S RESET
IBM Personal Computer MACRO Assembler
Version 2.00
TEST3 - - -- 06/10/85
POST EXCEPT I ON I NTERRUPT TESTS
229
230
23 I
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
241
248
249
250
25 I
252
253
254
255
256
251
258
259
260
"
I
262
263
264
265
266
267
268
269
270
211
272
273
274
275
276
277
218
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
OOCE E9 02CD R
;GOIFNOT
;
;
000 I
0001
0003
0005
0007
80 F4
E6 80
6A 48
01
0008
OODA
OODF
ODES
00E7
00E9
OOEC
OOEF
OOFI
00F3
00F5
00F7
00F9
28 FF
26; C1 05 0000
26: C1 45 02 1FFF
80 95
E6 88
88 1000
26: 62 05
28 C9
E2 FE
E4 88
3C 00
15 03
E9 02CO R
- - - - - - ----------------- - - -- ---------- --VERIFY 286 80UND INSTRUCTION
OESCR I PT I ON
CREA TE A SIGNED ARRAY INDEX
WITHIN AND OUTSIDE THE LIMITS
(EXPECT INT 5)
MOV
OUT
PUSH
FOF
<><><><><><><> <> <> <><><>
F4 <><>
AL,OF4H
MFG PORT ,AL
BYTE PTR ES TEMP
ES
<><> CHECKPOINT
LOAD ES REGI STER
-
CHECK BOUND FUNCT IONS CORRECTLY
LOOPA:
SUB
MOV
MOV
MOV
OUT
MOV
80UND
SUB
LOOP
IN
CMF
IN''
JMF
OI,DI
;
WORD PTR ES:(DI],O
;
WORD PTR ES:[DI+21,07FFFH
AL,095H
OMA PAGE+OAH,AL
AX,ToOOH
AX,aWORD PTR ES:{ol]
CX,CX
LOOPA
AL,OMA PAGE+OAH
AL,O
T7 7
ERROR_EXIT
CHECK LOW BOUND WORD CAUSES
OOFC
OOFC 28 FF
OOFE 26: C1 05 3FFO
010388 1000
0106 26: 62 05
0109 28 C9
0108
0108 E4 88
0100 3C 00
OIOF EO FA
0 I I I 14 03
0113 E9 02CO R
SET AX WITH I N SOUNDS
USE THE ES SEGMENT PO INTER
WA I T FOR POSS I BLE INTERRUPT
GET THE RESULTS
DID AN I NTERRUPT OCCUR?
CONT I NUE I F NOT
GO IF YES
INTERRUPT 5
SUB
MOV
MOV
80UND
SUB
01,01
WORD PTR ES:[Dlj,03FFOH
AX,IOOOH
AX,DWDRO PTR ES:[DI]
CX,CX
PO I NT BEG I NN I NG OF THE BLOCK
SET FIRST WORD TO 03FFOH
SET AX OUT OF BOUNDS
IN
CMF
LOOPNZ
AL,DMA PAGE+OAH
AL,OH LOOPB
T78
ERROR_EX I T
GET THE RESULTS
DID AN INTERRUPT OCCUR?
TRY AGAIN
CaNT I NUE I F INTERRUPT
GO IF NO INTERRUPT
WAIT FOR POSSI8LE INTERRUPT
LOOPB:
J"
JMF
;-----
CHECK HIGH BOUND WORD CAUSES
01168095
0118 E6 88
0I IA
OIIC
0121
0127
012A
a I 20
012F
a 12F
0131
0133
0135
0137
POINT BEGINN[NG OF THE 8LOCK
SET FIRST WORD TO ZERO
; SET SECOND TO 07FFFH
SET INTERRUPT 5 FLAG
AL,95H
DMA_PAGE+OAH, AL
28 FF
26: C7 05 0000
26: C7 45 02 OFFF
88 1000
26: 62 05
28 C9
INTERRUPT 5
SET FLAG FOR
INTERRUPT
SUB
MOV
MOV
MOV
BOUND
SUB
,01
PO I NT 8EG I NN I NG OF THE BLOCK
WORD PTR ES:[DI],O
, SET FIRST WORD TO 0
WORD PTR ES: [DI +2],OFFFH; SET SECOND TO OFFFH
SET AX OUT OF BOUNDS
AX,!OOOH
AX,DWORD PTR ES:{DI]
CX,ex
WAIT FOR POSSIBLE INTERRUPT
IN
CMF
LOOPNZ
.J"
.JMF
AL,OMA PAGE+OAH
AL,OH LOOPC
T7 9
ERROR_EX I T
O[
LOOPC:
E4
3C
EO
74
E9
88
00
FA
03
02CO R
;
;
013A
013A 80
013C E6
013E B8
0141 88
0143 43
0144 88
0146 41
0147 88
0149 42
014A 88
014C 47
0140 8B
014F 46
0150 55
0151 88
0153 45
015460
0155 28
0 I 57 88
0159 88
0 I 5B 8B
015D 88
0 I 5F 88
0161 88
016361
016483
0167 50
0168 75
016A 3D
0160 75
016F 83
017275
0 I 74 83
0177 75
0179 83
017C 75
017E 83
0181 15
018383
0186 74
GET THE RESULTS
DID AN INTERRUPT OCCUR?
TRY AGAIN
GO I F NO INTERRUPT
VERIFY PUSH ALL AND POP ALL INSTRUCTIONS:
DESCRIPTION
SET REGI STERS TO A KNOWN VALUE AND
:
PUSH ALL.
RESET THE REGISTERS, POP ALL:
AND VER IFY
T7 9:
F5
80
0001
D8
C8
Dl
FA
F7
EE
CO
08
C8
DO
F8
FO
E8
FO 07
IE
0001
19
FB 02
14
F9 03
OF
FA 04
OA
FF 05
05
FE 06
03
MOV
OUT
MOV
MOV
INC
MOV
INC
MOV
INC
MOV
INC
MOV
INC
PUSH
MOV
INC
PUSHA
SUB
MOV
MOV
MOV
MOV
MOV
MOV
POP A
CMF
FOF
.IN''
CMF
.IN''
CMP
.IN''
CMF
.IN''
CMF
.IN''
eMP
.IN''
CMF
J"
AL,OF5H
MFG PORT, AL
AX,OI
BX,AX
<> <><><><><><><><> <> <><>
<><> CHECKPO I NT F5 <><>
SET AX= 1
SET BX=2
BX
CX,BX
SET eX=3
CX
OX,CX
OX
DI,DX
01
SI,DI
5I
BF
BP,SI
BF
AX,AX
8X,AX
CX,AX
DX,AX
OI,AX
SI,AX
BP,AX
8P, 01
BF
ERROR EXITI
AX,O 1ERROR_EXIT!
8X,02
ERROR EXITI
CX,03ERROR EXIT1
DX,04ERROR_EX I T I
DI ,05
ERROR_EXIT!
S 1,06
T7_10
SET DX=4
SET DI=5
SET S I =6
SAVE THE
SET BP=7
(SP)
ERROR FLAG REGI STER
[SSUE THE PUSH ALL COMMAND
CLEAR ALL REG I STERS
GET THE REG I STERS BACK
BP SHOULD BE 7
RESTORE (BP) ERROR FLAG REGISTER
GO IF NOT
AX SHOULD BE I
GO IF NOT
BX SHOULD 8E 2
GO IF NOT
CX SHOULD BE 3
GO IF NOT
OX SHOULD BE 4
GO [F NOT
o I SHOULD 8E 5
GO IF NOT
S I SHOULD BE 6
CONTINUE IF [T IS
TEST3
5-77
1-4
IBM Personal Computer MACRO Assembler
Version 2.00
TEST3 ---- 06/10/85
POST EXCEPTION INTERRUPT TESTS
343
344
345
346
347
346
349
350
351
352
353
354
355
35.
357
358
359
360
361
362
363
3.4
3.5
;----0188
0188 E9 02CO R
06-10-85
ERROR EXIT
ERROR EXITI:
JMP
;
-- - - -- -- - - -- - ------ - --- ---- --- -- - - -- --- --- - -- --
;
VER I FY ACCESS RIGHTS FUNCT I ON CORRECTLY
; DESCRIPTION
;
SET ACCESS RIGHTS OF OEseR I PTOR TO
;
READ ONLY.
VERIFY THE VERW/VERR INSTR
;
ACCESS A READ ONLY WITH A WR I TE AND
;
VER I FY AN EXCEPT I ON I NTERRUPT 13
018B
0180
a 18F
0195
019A
01 AO
01 A3
BO
E6
C7
C6
C7
B8
8E
o I AS
3E
0lA6
0lA7
0lA7
o IA9
01 A7
01 A7
0lA9
0lA9
OF
F6
80
06 0048 FFFF
06 004C 00
06 004A FOOO
0048
CO
T7_10:
MOV
OUT
"OV
"OV
"OV
"OV
"OV
AL,OF6H
<><><><><><><><><><><><>
MFG PORT ,AL
, < > < > CHECKPOINT F6 <><>
OS IES TEMP. SEG LI M IT ,MAX SEG LEN
; SET SEGMENT TO OFFFFH
BYTE PTR OS: IE5 TEMP.BAsE HI-8YTEI,O
; SET THE ADDRESS
DSlES TEMP.BASE-LO WORD,OFOOOH
AX ,ES-TEMP
; LOAD ES REGI STER
ES, AXt TH I S SEGMENT SHOULD BE WR I TEABLE
INSURE ACCESS RIGHTS MAY BE WRiTTEN
3 ••
3.7
3.6
3.9
370
371
372
373
374
375
37.
377
376
379
360
381
382
383
3.4
385
3 ••
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
406
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
42.
427
426
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
45.
??0009
SEGOV
DB
VERW
DB
LABEL
? ?OOOA
LABEL
8B E8
"OV
ORO
00
DB
ORO
JNZ
75 00
;-----
01 AB C6 06 0040 91
alBa 88 0048
01B3 8E co
SET SEGMENT OVERRIDE TO START OF TABLE
OS
03EH
AX
OOFH
BYTE
BP,AX
BYTE
OFFSET CS:?? 0009
OOOH
OFFSET CS;? ?OOOA
ERROR_EXIT 1
CHECK THE ACCESS RIGHTS OF ES_TEMP
; ERROR
I F SEGMENT CAN NOT WR I TE
SET ACCESS RIGHTS TO READ ONLY
os:
0lB6
01 B7
a I 87
0189
0187
0187
0189
0189
OF
74 CD
JZ
BYTE PTR
IES TEMP.DATA ACC RIGHTS) ,91H
AX, ES TEMP
; -LOAD ES REG I STER
ES ,AXOS
SET SEGMENT OVERR I DE TO START OF TABLE
03EH
AX
CHECK THE ACCESS RIGHTS OF ES_TEMP
OOFH
BYTE
BP,AX
BYTE
OFFSET CS: ??OOOC
OOOH
OFFSET CS:? 10000
ERROR_EXITI
ERROR IF SEGMENT IS WRITEABLE
or BB
88 0048
"OV
SEGOV
OS
0185 3E
??OOOC
88 E8
? 10000
ORO
00
DB
ORO
08
018E 3E
a r8F
OICO
OICO
0lC2
OICO
OICO
0lC2
0lC2
??OOOF
VERR
DB
LABEL
?70010
"OV
LABEL
OF
88 EO
ORO
00
DB
ORO
75 C4
JNZ
;-----
0lC4
0lC6
0lC8
OICA
DICE
aiDa
0102
0104
0106
80 90
E6 88
2B F6
26: C6 04 00
28 C9
E4 88
22 CO
EO FA
75 BO
SUB
"OV
SUB
LOOPD:
LOOPNZ
JNZ
;-----
;
;
;
BO
E6
88
BS
00
IN
AND
I NSURE THAT SEGMENT
AX,ES TEMP
5-78
010 THE
RESTORE THE ACCESS RIGHTS BYTE
"OV
OUT
"OV
"OV
OR
1?0011
ARPL
LABEL
?? 00 1 2
"OV
LABEL
ORO
08
ORO
,CPLO_OATA_ACCESS
JNZ
AND
e"p
JNZ
<><> <><><> <> <> <> <> <><> <>
AL,OF7H
MFG PORT, AL
AX,ES TEMP
BX,OS-TEMP
AX,03H
AX,BX
BYTE
AX,BX
BYTE
OFFSET CS:??OOII
063H
OFFSET CS:? ?OO 12
ERROR EXITI
BL, 03H
BL,03H
ERROR_EXITI
<><> CHECKPOINT F7
PUT A SELECTOR I N AX
PUT A SELECTOR IN BX
MAKE ACCESS OF AX < ex
AX
SECOND OPERAND
;
I SSUE THE RPL COMMAND
GO IF RPL WAS NOT CHANGED
STR I P UNWANTED BITS
AS EXPECTED?
GO IF NOT
CHECK THAT ACCESS RIGHTS 00 NOT CHANGE
TEST3
I NTERRUPT OCCUR?
MISS I NG INTERRUPT
- --- - -- - -- - -- - --- - - - - -- - -- -- - --- -- - - - - - - - -- - - - --
80
0048
0060
0003
9A
E3 03
FB 03
92
WR ITE A BYTE THAT SHOULD
WA iT FOR INTERRUPT
VERIFY AO..JUST RPL FIELD OF SELECTOR
I NSTRUCT I ON (ARPL I FUNCT IONS
OESCR I PT I ON
SET THE RPL FIELD OF A SELECTOR
AND VER I FY THAT THE ZERO FLAG I S SET
CORRECTL Y AND THAT THE SELECTOR RPL
F I ELO I S SET CORRECTLY
8B C3
75
80
80
75
SET EXCEPT I ON FLAG
FOR INTERRUPT 13
AL,09DH
oMA PAGE+OAH ,AL
51,51
BYTE PTR ES:[Slj.OO
cX,ex
AL,DMA PAGE+OAH
AL,AL LOOPD
ERROR_EX I T 1
MOV
BYTE PTR os: (ES_TEMP.DATA_ACC_RIGHTSJ
--- --- --------- ---------------------------------
F7
63
GO I F SEGMENT NOT READABLE
13 INTERRUPT
NOTE BX ::: FIRST OPERAND
OlEA
0 r EA
OIEC
OlEA
0 I EA
OIEC
OIEC
0 I EE
OIFI
0lF4
IS READABLE
-
03EH
AX
OOFH
BYTE
SP,AX
BYTE
OFFSET CS:??OOOF
OOOH
OFFSET CS:??OOIO
ERROR_EXITI
CAUSE AN EXCEPTION
"DV
OUT
0 r 08 C6 06 0040 93
0100
0 I OF
aiEl
0 I E4
0 I E7
"OV
"OV
"OV
SEGOV
DB
VERW
DB
LABEL
"OV
LABEL
1-5
IBt.! Personal Computer MACRO Assembler
Ver.sion 2.00
TEST3 ---- 06/10/85
POST EXCEPTION INTERRUPT TESTS
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
476
479
480
481
462
463
464
485
486
487
466
46'
490
OlF6 BB 0060
0 I F9 B8 0048
0 I FC 80 CB 03
01FF
OIFF
020 I
OIFF
0 I FF
020 I
0201
0203
0206
0209
;-----
NOTE BX
= FIRST
??OO \ 3
ARPL
LABEL
AX,BX
BYTE
AX,BX
BYTE
OFFSET CS: 1100 13
063H
OFFSET CS:??0014
ERROR EXITI
BL,03H
BL,03H
ERROR_EX [T2
MOV
110014
LABEL
ORC
63
DB
ORC
JZ
85
E3 03
FB 03
2F
AND
CMP
JNZ
OPERAND
AX
= SECOND
;
OPERAND
I SSUE THE RPL COMMAND
GO IF RPL WAS NOT CHANGED
STRIP UNWANTED BITS
AS EXPECTED1
GO IF NOT
VER I FY LOAD SEGMENT LIM I T I LSL)
AND LOAD ACCESS RIGHTS iLAR} INSTRUCTION
;----020B 90 F8
0200 E6 80
CHECK THE LAR
INSTRUCTION
<><><> <><> <> <> <> <> <> <> <>
<> <> CHECKPO I NT F 8 <> <>
AL,OF8H
MFG_PORT, AL
MOV
OUT
SET THE DESCR I PTOR TO LEVEL 3
020F C6 06 0040 F3
0214 BB 0048
0217 2B CO
MOV
MOV
SUB
0219 OF
021A
021 A 88 C3
021C
021 A
021A 02
021C
DB
LABEL
BYTE PTR OS: lES TEMP.DATA ACC RIGHTS) ,CPL3 DATA ACCESS
BX,ES TEMP
-AX, AX; CLEAR AX
GET THE CURRENT DESCRIPTORS ACCESS RIGHTS
491
492
493
494
495
496
497
498
; FUT A SELECTOR IN BX
I PUT A SELECTOR I N A X
; MAKE ACCESS OF BX < AX
MOV
MOV
OR
8B C3
74
80
80
75
06-10-85
LAR
110015
AX,BX
OOFH
BYTE
AX,BX
BYTE
OFFSET CS:??0015
002H
OFFSET CS:??0016
MOV
110016
LABEL
ORC
DB
ORC
;
I SSUE THE LAR COMMAND
499
500
INSURE THE DESCRIPTOR WAS VISIBLE
501
502
503
504
505
506
507
506
;----021E 80 FC F3
0221 75 17
GO IF LAR WAS NOT CHANGED
THE DESCRIPTORS ACCESS RIGHTS MUST BE 3
AH,CPL3 DATA ACCESS
ERROR_EXIT2 -
CMP
JNZ
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
546
54'
550
551
552
553
554
555
556
557
556
559
560
561
562
563
564
565
566
567
568
569
;
JNZ
; AS EXPECTED?
; GO IF NOT
I LOAD SEGMENT LIM I TS)
CHECK THE LSL
<><> <><><><><><><><><><>
<><> CHECKPOINT F9 <><>
0223 BO F9
0225 E6 80
0227 C7 06 0048 AAAA
MOV
OUT
MOV
~~~E~~~~M~~ SEG_LIM IT .OAAAAH
0220 C6 06 0040 93
0232 98 0048
MOV
MOV
~~~~SP~~M~S: I ES_TEMP. DAT~_~g~BR ~~H~~b i ~~~~_DATA_ACCESS
LSL
BX. AXOOFH
BYTE
BX,AX
BYTE
OFFSET CS:110017
003H
OFFSET CS:??0018
R07
0235
0236
0236
0238
0236
0236
0238
0238
OF
?? 00 I 7
8B 08
AL,OF9H
DB
LABEL
MOV
110018
LABEL
ORC
03
DB
ORC
74 03
JZ
023A
023A E9 02CD R
ERROR EX I T2:
..IMP
0230 81 FB AAAA
0241 C7 06 0048 5555
0247 B8 0048
R07:
OF
1?0019
8B 08
11001A
DB
LABEL
LABEL
ORC
DB
ORC
75 EB
JNZ
024F 81 FB 5555
0253 75 E5
CMP
BX ,05555H
ERROR_EX I T2
JNZ
;- - - 7; ~~; ~~~ ~~
;
;
;
-
~~~~~; ;~~;
MOV
OUT
PUSH
POP
AL,OFAH
MFG PORT ,AL
BYTE PTR GOT PTR
OS
-
<><><> <> <> <> <><><> <><><>
<><> CHECKPOINT FA <><>
MODIFY THE DESCRIPTOR TABLE
SET TEMPORARY ES DESCRIPTOR 64K SEGMENT L1MIT/CPLO DATA ACCESS
MOV
MOV
DS:ES TEMP.SEG LIMIT,MAX SEG LEN
BYTE PTR OS: (ES_TEMP.DATA_ACC_RIGHTS) ,CPLO_DATA_ACCESS
START WITH SEGMENT
C6 06 004C lB
C7 06 004A 0000
6A 48
07
2B FF
26: C7 05 AA55
INSURE CORRECT SEGMENT LIMIT
GO IF NOT
-------------------------------
TEST THAT A WRITE TO ADDRESS IBOOOO DOES NOT WRITE
TO BOOO:O, OR lB8000 DOES NOT WRITE TO B800:0
;-----
0267
026C
0272
0274
0275
0277
I F NOT SUCCESSFUL
- - - - - - - - - - - - - - -- -- - - - - - - - - - - -- - - - - - -- - - - - -- -- -- -- - - - - - --
0255 BO FA
0257 E6 80
0259 6A 08
025B IF
025C C7 06 0048 FFFF
0262 C6 06 0040 93
GO IF OK
BX,OAAAAH
; I NSURE CORRECT SEGMENT LIM I T
DS:ES TEMP.SEG LIMIT,05555H
;SET THE SEGMENT LIMIT TO 05555H
AX ,ES-TEMP
BX, AX; GET THE OESCR I PTOR SEGMENT LIM I T
OOFH
BYTE
BX,AX
BYTE
OFFSET CS:??OOI9
003H
OFFSET CS:??OOIA
ERROR_EXIT2
GO IF NOT SUCCESSFUL
MOV
03
SET SEGMENT LI MIT TO OAAAAH
GET THE DESCR I PTOR SEGMENT LIM I T
GO
CMP
MOV
MOV
LSL
024A
024B
024B
0240
024B
024B
0240
0240
;
;
IBOOOO
MOV
MOV
~~~~ti~M~:~l~~-~~M:O~~:~_HI_BYTE)
PUSH
BYTE PTR
ES TEMP E5
DI,DI
;
WORD PTR ES:[DI1,OAA55H ;
POP
SUB
MOV
,IBH
LOAD ES REG I STER
POINT TO FIRST LOCATION
WRITE A TEST PATTERN
570
TEST3
5-79
1-6
06-10 85
IBM Personal Computer MACRO Assembler
Version 2.00
TEST3 ---- 06/10/85
POST EXCEPTION INTERRUPT TESTS
571
512
513
574
575
516
571
516
519
580
581
582
583
584
565
586
567
588
589
590
591
592
593
594
595
596
597
596
599
600
601
602
603
60.
605
606
601
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
621
626
629
630
DO FOR SEGMENT
021C
0282
0284
0285
C7 06 004A 8000
6A 48
01
26: C7 05 AA55
028A
028F
0295
0291
0298
C6 06 004C 1A
Cl 06 o04A 0000
6A 48
01
26: Cl 05 AA55
MOV
PUSH
POP
MOV
DO FOR SEGMENT
MOV
MOV
PUSH
POP
MOV
188000
DS:ES TEMP. BASE LO WORD,BOOOH
BYTE PTR ES lEMP ; LOAD ES REGIS1ER
ES
WORD PTR ES: (0 r ] ,OAA55H I WR r TE A TEST PATTERN
I AOOOO
BYTE PTR OS: IES TEMP.BASE HI BYTE) ,IAH
DS:ES TEMP.SASE-LO WORD,o- BYTE PTR ES TEMP LOAD ES REG I STER
ES
WORD PTR ES:(DIJ,OAA55H ; WRITE A TEST PATTERN
B/W VIDEO CARD
0290 6A 20
029F 1F
02AO 88 05
PUSH
PDP
MDV
BYTE PTR
C BWCRT PTR
OS
-AX,OS: [DI J
SET OS TO S/W DISPLAY REGEN BUFFER
GET THE WORD FROM B/W V IDEO
COMPAT[BLE COLOR
02A2 6A 28
02A4 IF
02A5 88 10
PUSH
PDP
MDV
;-----
BYTE PTR C CCRT PTR
OS
-aX,OS:[DI)
SET OS TO COMPAT [BLE COLOR MEMORY
GET THE WORD FROM COLOR MEMORY
EGA COLOR
02A 1 6A 30
02A9 IF
02AA 88 00
PUSH
02AC 50
02AO 80 35
O'::AF E6 80
0281 58
0282 3D AA55
02857416
0281 81 F8 AA55
0288 74 10
0280 81 F9 AA55
02Cl 74 OA
02C3 80 34
02C5 E6 80
PUSH
PDP
MDV
BYTE PTR E CCRT PTR
OS
-CX,OS: [DJ J
EGA COLOR CRT PO I NTER LOW 64K
TEST FOR ERROR
MDV
OUT
POP
eMP
JZ
eMP
JZ
eMP
JZ
MOV
OU7
AX
AL,35H
MFG PORT ,AL
AX AX,OAA55H
ERROR EX [T
eX,OAA55H
ERROR EX I T
CX,OAA55H
ERROR EX IT
AL,34H
MFG_PORT, AL
SAVE RESULTS
<><><><><> <> <> <><><> <> <>
<><> CHECKPOINT 35 <><>
RESTORE CHECK PO J NT
<><> CHECKPO I NT
34 <><>
SHUTDOWN
02Cl
02C1 B8 068F
02CA E8 0000 E
02CD
02CD E9 0000 E
NORMAL EX IT!
- MOV
CALL
ERROR EXll:
-.IMP
0200
POST3
ENDP
CODE
ENDS
END
5-80
TEST3
AX,6·H+CMOS SHUT_OOWN+NMI
CMOS_WRITE
PRoe _ SHUTDOWN
ADDRESS FOR SHUTDOWN BYTE
SET GOOD END I NG
IBM Personal Computer MACRO Assembler
Version 2.00
TEST4 ---- 06/10/85
POST AND 8[OS UT[LlTY ROUTINES
I
2
3
4
5
6
7
B
9
10
II
12
13
14
15
16
17
IB
19
20
21
22
23
24
25
26
27
2B
29
30
31
32
33
34
35
36
37
3B
39
40
41
42
43
44
45
46
47
4B
49
50
51
52
53
54
55
56
57
5B
59
60
61
62
63
64
65
66
67
6B
69
70
PAGE 118,121
TITLE TEST4 ---- 06/10/85
POST AND BIOS UTILITY ROUTINES
.286C
.Ll ST
CODE
SEGMENT BYTE PUBL I C
0000
PUBLIC
PUBL [C
PUBLIC
PUBL [C
PUBL [C
PUBLIC
PUBL [C
PUBLIC
PUBLIC
PUBL [C
PUBL IC
PUBL IC
PUBLIC
PUBLIC
PUBL IC
PUBL IC
PUBLI C
PUBLIC
PUBL IC
PUBLIC
PUBLIC
PUBLIC
PUBL [C
PUBL IC
BEEP
BLINK INT
CMOS READ
CMOS-WR [TE
CONFTG BAD
011
DDS
DUMMY RETURN 1
ERR BEEP
E MSG
INT 2ST
KBD-RESET
POST4
PROT PRT HEX
PROC-SHUTDOWN
PRT HEX
PRT-SEG
P MSG
RE DIRECT
ROM CHECK
ROM-CHECKSUM
SET-TOO
WAITF
XPC_BYTE
EXTRN
EXTRN
EXTRN
EXTRN
EI63:NEAR
OSF 421NEAR
ROM-ERR:NEAR
XMIT_8042:NEAR
ASSUME
CS:CODE,DS:DATA
POST4 :
1--- CMOS READ ---------------------------------------------------------------READ BYTE FROM CMOS SYSTEM CLOCK CONFIGURATION TABLE
0000
0000
0000
000 I
0003
0004
0006
OOOT
0009
OOOA
00 DC
0000
00 OF
00 I I
0013
0014
0015
0018
I-I
06-10-85
9C
DO
F9
DO
FA
E6
90
E4
50
80
DO
E6
58
OE
E8
C3
INPUT:
(AL):
OUTPUT:
(AU
CMOS READ
PUSHF
08
TO
TI
IA
08
TO
0019 R
VALUE AT LOCATION (AL) MOVED INTO (AU.
IF BIT T OF (ALI WAS
ON THEN NM I LEFT DISABLED.
OUR I NG THE CMOS READ BOTH NM I AND
NORMAL INTERRUPTS ARE DISABLED TO PROTECT CMOS DATA INTEGRITY.
THE CMOS ADDRESS REGISTER IS POINTED TO A DEFAULT VALUE AND
THE INTERRUPT FLAG RESTORED TO THE ENTRY STATE ON RETURN.
ONLY THE (All REGISTER AND THE NMI STATE IS CHANGED.
PROC
ROL
STC
RCR
CLI
OUT
Nap
IN
PUSH
"OV
RCR
OUT
POP
PUSH
CALL
RET
CO
CMOS TABLE ADDRESS TO BE READ
BIT
T : 0 FOR NMI ENABLED AND I FOR NMI DISABLED ON EX[T
BITS 6-0 : ADDRESS OF TABLE LOCATION TO READ
NEAR
AL,I
AL, I
CMOS _PORT, AL
AL,CMOS_OATA
AX
AL,CMOS_REG_D-2
AL, I
CMOS_PORT, AL
AX
CS
CMOS_POPF
READ LOCATION (All INTO (I'\Ll
SAVE INTERRUPT ENABLE STATUS AND FLAGS
MOVE NMI B[T TO LOW POSITION
FORCE NM I B IT ON I N CARRY FLAG
HIGH BIT ON TO DISABLE NMI - OLD IN CY
DisABLE INTERRUPTS
ADDRESS LOCATION AND DISABLE NMI
I/O DELAY
READ THE REQUESTED CMOS LOCATION
SAVE (AH) REG I STER VALUE AND CMOS 8YTE
GET ADDRESS OF DEFAULT LOCATION
PUT OR I G I NAL NM I MASK 81 T I NTO ADDRESS
SET OEF AUL T TO READ ONLY REG I S TER
RESTORE (AHI AND (All = CMOS BYTE
-PLACE CODE SEGMENT IN STACK AND
-HANDLE POPF FOR B- LEVEL 80286
RETURN WITH FLAGS RESTORED
71
72
73
74
75
76
n
7B
79
BO
BI
B2
B3
B4
B5
B6
B7
BB
B9
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
lOB
109
110
III
112
113
0019
CMOS READ
ENDP
0019
0019 CF
CMOS POPF
IRET
PROC
00 I A
CMOS_POPF
ENDP
-
NEAR
POPF FOR LEVEL B- PARTS
RETURN FAR AND RESTORE FLAGS
; --- CMOS_WR I TE - -------- ------------------------------------------------------WRITE BYTE TO CMOS SYSTEM CLOCK CONFIGURATION TABLE
INPUT:
(AL)
=
(AHl
=
OUTPUT:
00 I A
00 I A
001 B
00 I C
DOlE
001F
0021
0022
0024
0026
0028
002A
002C
002E
002F
0030
0033
9C
50
DO CO
F9
DO 08
FA
E6
SA
E6
80
DO
E6
58
DE
ES
C3
TO
C4
Tl
IA
08
TO
0019 R
CMOS WR ITE
PUSHF
PUSH
ROL
STC
RCR
CLI
OUT
"OV
OUT
"OV
RCR
OUT
POP
PUSH
CALL
CMOS TABLE ADDRESS TO 8E WR ITTEN TO
81T
7:: 0 FOR NMI ENABLED AND I FOR NMI DISABLED ON EXIT
BITS 6-0 = ADDRESS OF TABLE LOCATION TO WRITE
NEW VALUE TO BE PLACED IN THE ADDRESSED TABLE LOCATION
VALUE IN {AHl PLACED IN LOCATION (ALl WITH NMI LEFT DISABLED
IF BIT 7 OF (ALI IS ON.
dURING THE CMOS UPDATE 80TH NMI AND
NORMAL INTERRUPTS ARE DISABLED TO PROTECT CMOS DATA INTEGRITY.
THE CMOS ADDRESS REG I STER I S PO I NTED TO A DEFAULT VALUE AND
THE INTERRUPT FLAG RESTORED TO THE ENTRY STATE ON RETURN.
ONLY THE CMOS LOCATION AND THE NMI STATE IS CHANGED.
PROC
NEAR
AL,I
AL,I
CMOS PORT, AL
AL,AH
CMOS DATA,AL
AL.C'MOS REG 0-2
AL,I
CMOS PORT, AL
AX
CS
-
CMOS_POPF
WRITE (AH) TO LOCATION (ALI
SAVE INTERRUPT ENABLE STATUS AND FLAGS
SAVE WORK REGISTER VALUES
MOVE NMI BIT TO LOW POSITION
FORCE NMJ 81T ON IN CARRY FLAG
HIGH BIT ON TO DISABLE NMI - OLD IN CY
D I SABLE INTERRUPTS
ADDRESS LOCATION AND DISABLE NMI
GET THE DATA BYTE TO WRITE
PLACE IN REQUESTED CMOS LOCATION
GET ADDRESS OF DEFAULT LocATION
PUT ORIGINAL NMI MASK BIT INTO ADDRESS
SET DEFAULT TO READ ONLY REGISTER
RESTORE WORK REG I STERS
-PLACE CODE SEGMENT IN STACK AND
-HANDLE POPF FOR B- LEVEL 80286
RET
0034
TEST4 5-81
1-2
06-10-85
IBM Personal Computer MACRO Assembler
Version 2.00
TEST4 ---- 06/10/85
POST AND BIOS UTILITY ROUTINES
114
115
116
111
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
0034
0034 2E: 8E IE 003A R
PAGE
DDS
0039 C3
PROC
MDV
RE7
003A ---- R
DDSDATA OW
003C
DDS
NEAR
DS.CS:DDSDATA
LOAD (OS) TO DATA AREA
PUT SEGMENT VALUE OF DATA AREA
RETURN TO USER WITH (OS):: DATA
DATA
SEGMENT SELECTOR VALUE FOR DATA AREA
INTO OS
ENOP
;--- E MSG -- P MSG ----------------------------------------------------- THIS SUBROUTINE WILL PRINT A MESSAGE ON THE DISPLAY
ENTRY REQU I REMENTS:
SI :: OFFSET(ADDRESS) OF MESSAGE BUFFER
CX :: MESSAGE BYTE COUNT
MAX I MUM MESSAGE LENGTH IS 36 CHARACTERS
BP '" BIT 0=EI61/EI62, BIT I=CONFIG_BAD, 2-15= FIRST MSG OFFSET
PRoe
TEST
JNZ
NEAR
BP,03FFFH
E_MSG I
56
81 E6 3FFF
OB EE
5E
PUSH
AND
DR
PDP
SI
E8
IE
E8
F6
14
CALL
PUSH
CALL
TEST
P MSG
PR I NT MESSAGE
OS
SAVE CALLERS (OS)
DDS
; POINT TO POST/BIOS DATA SEGMENT
BYTE PTR @EQUIP FLAG,OIHj LOOP/HALT ON ERROR SWITCH ON ?
MFG_HAL T
; YES
THEN GO TO MANUFACTUR ING HALT
PDP
RE7
OS
RESTORE CALLERS
AL,@MFG ERR FLAG
MFG_PORT, ALMFG_HAL T
MANUFACTUR I NG LOOP MODE ERROR TRAP
o I SABLE INTERRUPTS
RECOVER ERROR I NO I CA TOR
SET INTO MANUFACTURING PORT
HALT SYSTEM
HOT NMJ TRAP
NEAR
AL,CS: [51]
SI
AX
PRT HEX
AX AL,LF
P _MSG
DISPLAY STRING FROM
PUT CHARACTER IN (AL)
PO I NT TO NEXT CHARACTER
SAVE PR INT CHARACTER
CALL VIDEO 10
RECOVER PRINT CHARACTER
WAS IT LINE FEED?
NO, KEEP PRINTING STRING
003C
003C F7 C5 3FFF
0040 75 08
0042
0043
0047
0049
004A
004A
0040
004E
0051
0056
E_MSG
0063 R
0034 R
06 0010 R 01
02
0058 IF
0059 C3
005A
005A
005B
005E
0060
0061
FA
AD 0015 R
E6 BO
F4
EB F1
MFG HALT:
CLI
MDV
DU7
HL 7
JMP
SI,03FFFH
BP,SI
SI
CHECK FOR NOT FIRST ERROR MESSAGE
SKIP IF NOT FIRST ERROR MESSAGE
SAVE MESSAGE POINTER
USE LOW 14 BI TS OF MESSAGE OFFSET
AS FIRST ERROR MESSAGE FLAG
(BIT 0 = E1611E162, BIT t = BAD_CONFIG
WS'
0063
IbO
161
162
163
164
165
166
161
168
169
0063
0063
0066
0061
0068
006B
006C
006E
0010
P _MSG
PROC
MDV
INC
PUSH
CALL
PDP
CMP
JNE
RET
P _MSG
ENDP
2E: 8A 04
46
50
E8 0128 R
58
3C OA
15 F3
C3
(CS:)
170
111
0011
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
ERR BEEP
9C
FA
OA F6
74 IE
70
0500
OOAF R
C233
00F5 R
CE
EE
0089 IE
008A E8 0034 R
0080 80 3E 0012 R 01
0092 IF
0093 74 C5
202
203
204
205
0095
0095
0091
009A
0090
OOAO
00A3
00A5
206
207
208
209
------------ --- ------------ --
NEAR
CLi
DR
JZ
DH,DH
G3
MDV
MDV
CALL
MDV
CALL
DEC
JNZ
BL.112
CX,I280
BEEP
CX,49715
WAITF
DH
Gl
SAVE FLAGS
DISABLE SYSTEM INTERRUPTS
ANY LONG ONES TO BEEP
NO, DO THE SHORT ONES
LONG BEEPS
COUNTER FOR LONG BEEPS 11-3/4 SECONDS)
DIVISOR FOR 932 HZ
DO THE BEEP
2/3 SECOND DELAY AFTER LONG BEEP
OELAY BETWEEN BEEPS
ANY MORE LONG BEEPS TO DO
LOOP TILL DONE
PUSH
CALL
CMP
PDP
JE
OS
DDS
@MFG_TST,OtH
OS
MFG_HAL T
MANUFACTURING TEST MODE?
RESTORE ORIGINAL CONTENTS OF
YES - STOP BLINKING LEO
SHORT BEEPS
COUNTER FOR A SHORT BEEP (9/32)
DIVISOR FOR 981 HZ
DO THE SOUND
I /2 SECOND DELAY AFTER SHORT BEEP
DELA Y BETWEEN BEEPS
DONE WITH SHORT BEEPS COUNT
LOOP 11 LL DONE
GI:
B3
B9
E8
89
E8
FE
75
'"
197
198
199
200
201
=
.-- ----------------- - PUSHF PROC
;
0011
0011
0072
0013
0075
0017
0017
0079
001C
001F
0082
0085
0087
-- ERR BEEP -------- -------------------------------------------------THIS PROCEDURE WILL ISSUE LONG TONES (1-3/4 SECONDS) AND ONE OR
MORE SHORT TONES (9/32 SECOND) TO INDICATE A FAILURE ON THE
PLANAR BOARD, A BAD MEMORY MODULE, OR A PROBLEM WITH THE CRT.
ENTRY PARAMETERS:
DH = NUMBER OF LONG TONES TO BEEP.
DL
NUMBER OF SHORT TONES TO BEEP.
G3:
B3
B9
E8
89
E8
FE
75
12
04B8
OOAF R
8178
00F5 R
CA
EE
MDV
MDV
CALL
MDV
CALL
DEC
JNZ
BL,I B
CX,I208
BEEP
CX,33144
WAITF
DL
G3
69 8178
E8 00F5 R
MDV
CALL
PDPF
RET
CX,33144
WAITF
SAVE OS REGISTER CONTENTS
(OS)
210
211
212
213
214
215
OOA 1
OOAA
OOAD
OOAE
216
OOAF
5-82
90
C3
ERR BEEP
-
TEST4
ENDP
1/2 SECOND DELAY AFTER LAST BEEP
MAKE I T ONE SECOND DEL A Y BEFORE RETURN
RESTORE FLAGS TO OR I G (NAL SETT I NGS
RETURN TO CALLER
'-3
[BM Personal Computer MACRO Assembler
Version 2.00
TEST4 ---- 06/[0/85
POST AND 8[05 UTILITY ROUTINES
217
216
2 ••
220
22'
222
223
224
225
226
221
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
246
249
2S0
251
252
253
254
255
256
2S7
258
259
260
261
262
263
264
265
266
261
266
269
270
27.
272
273
274
275
276
PAGE
; - -- BEEP - - -- -- - - --------------------- - ------------------------- --- ---ROUT I NE TO SOUND THE BEEPER US I NG T I MER 2 FOR TONE
ENTRY:
(BL)
DURATION COUNTER
( \ FOR 1/64 SECOND I
(CX) = FREQUENCY DIVISOR (1193180/FREQUENCYI (1331 FOR 886 HZ)
=
(AX) ,(BL), (CX)
OOAF
OOAF
0080
0081
00B3
0085
0087
0089
00B8
OOBD
OOBF
OOCI
00C3
OOCS
00C7
00C9
OOCA
OOCA
OOCD
0000
0002
0004
0005
0006
0008
DaDA
OOOC
OOoE
OOEO
00E2
00E3
OOE6
00E9
OOEA
OOEB
OOED
OOEF
OOFI
00F3
00F4
PROC
PUSHF
BEEP
9C
FA
80
E6
E8
8A
E6
E8
8A
E6
E4
8A
OC
E6
90
MODIF[ED.
NEAR
elI
86
43
00
CI
42
00
C5
42
61
EO
03
61
AL,IOIIOIIOB
TIMER+3,AL
"OY
OUT
JMP
MOY
OUT
JMP
"OY
OUT
'.2
AL,CL
TIMER+2,AL
"2
AL,CH
T[MER+2,AL
AL,PORT B
AH,AL
AL,GATE2+SPK2
PORT_B,AL
'N
"OY
OR
OUT
POPF
9C
FA
E4
OC
22
8A
24
E6
90
B9
E8
9C
FA
E4
24
OA
E6
90
C3
040B
00F5 R
CB
F6
CX,1035
WAITF
"OY
CALL
DEe
JNZ
BL
G7
PUSHF
elI
61
FC
EO
C4
FC
61
AL,PORT B
AL,NOT (GATE2+SPK21
AH,AL
AL,AH
AL,NOT (GATE2+SPK21
PORT_B,AL
'N
OR
AND
MOY
AND
OUT
POPF
MOY
CALL
PUSHF
040B
00F5 R
CX,1035
WA ITF
elI
'N
61
03
C4
61
00F5
1t:6~~~2~SPK2
AND
AL,AH
PORT_B,AL
OR
OUT
POPF
RET
BEEP
ENoP
ENTRY:
(CX)
= COUNT
OF 15.085737 MICROSECOND INTERVALS TO WAIT
MEMORY REFRESH TI MER \ OUTPUT USED AS REFERENCE
EXIT:
(CX
~
=0
AFTER
(ex)
TIME COUNT
(PLUS OR MINUS
16 MICROSECONDS)
PROC
PUSH
NEAR
AX
(CX)-15.085131 US
OELAY FOR
SAVE WORK REGISTER (AH)
'N
ANO
eMP
JE
AL.PORT_B
AL, REFRESH 8] T
AL,AH
WA[TFI
USE TIMER
OUTPUT BI TS
READ CURRENT COUNTER OUTPUT STATUS
MASK FOR REFRESH DETERMINE BIT
010 IT JUST CHANGE
WA IT FOR A CHANGE IN OUTPUT LINE
OOFE 8A EO
0100 E2 F4
"OY
LOOP
AH,AL
WAITFI
SAVE NEW FLAG STATE
DECREMENT HALF CYCLES TILL COUNT END
0102 58
0103 C3
POP
AX
RESTORE
RETURN
00F5
00F5 50
00F6
00F6
OOF8
OOFA
OOFC
WAITF
WAITFI:
E4
24
3A
14
61
10
C4
F8
RET
0104
WA[TF
296
299
300
301
302
303
304
305
306
301
308
309
310
31 I
312
313
314
31S
SAVE ] NTERRUPT STATUS
BLOCK I NTERRUPTS OUR I NG UPDATE
GET CURRENT PORT VALUE
I SOLATE CURRENT SPEAKER BITS I N CASE
SOMEONE TURNED THEM OFF OUR I NG BEEP
RECOVER VALUE OF PORT
FORCE SPEAKER DA T A OFF
AND STOP SPEAKER T[MER
RESTORE INTERRUPT FLAG STATE
FORCE I /64 SECOND DELAY (SHORT I
MIN] MUM DEL A Y BETWEEN ALL BEEPS
SAVE I NTERRUPT STATUS
BLOCK INTERRUPT S DUR I NG UPDATE
GET CURRENT PORT VALUE IN CASE
SOMEONE TURNED THEM ON
RECOVER VALUE OF PORT B
RESTORE SPEAKER STATUS
RESTORE [NTERRUPT FLAG STATE
; --- WA I TF --------- - ---------------- - -------------- ------ ---- ------ ----F I XED T I ME WA [T ROUT I NE (HARDWARE CONTROLLED - NOT PROCESSOR I
296
297
SETUP T I MER 2
SAVE [NTERRUPT STATUS
BLOCK I NTERRUPTS OUR I NG UPDATE
SELECT T] MER 2 I LSB I MSB I B] NARY
WRITE THE TIMER MODE REGISTER
I/O DELAY
DIVISOR FOR HZ (LOW)
WRITE TIMER 2 COUNT - LSB
I/O DELAY
DIVISOR FOR HZ (HIGH)
WRITE TIMER 2 COUNT - MSB
GET CURRENT SETT I NG OF PORT
SAVE THAT SETTING
GATE T I MER 2 AND TURN SPEAKER ON
AND RESTORE [NTERRUPT STATUS
I /64 SECOND PER COUNT (BLI
DELA Y COUNT FOR I /64 OF A SECOND
GO TO BEEP DELA Y I { 64 COUNT
(BL) LENGTH COUNT EXPIRED?
NO - CONT I NUE BEEP I NG SPEAKER
G7:
B9
E8
FE
75
271
276
27'
260
26.
282
283
264
285
286
281
288
289
2.0
291
292
2.3
294
295
06-10-85
;- - -
0 I 04
010450
0 I OS 86
0108 E8
0108 OC
010086
OIOF E8
0 I 12 58
01 \3 81
0111 C3
01 18
8E8E
0000 R
20
EO
OOIA R
CD 4000
.
(AHI
(CX)
=0
ENDP
CONF I G BAD ----- -- --------------- -------------- --- ------- ---- -- ----SET-CMOS DIAG WITH CONF]G ERROR B]T (WITH NMI DISABLED~
:
(BP) BIT-'4 SET ON TO INDICATE CONFIGURATION ERROR
CONF [G BAD
- PUSH
MOY
CALL
OR
XCHG
CALL
POP
OR
RET
CONF I G_BAD
PROC
NEAR
AX
AX,X- (CMOS DIAG+NMI)
CMOS READ AL,BAD CONFIG
AH,AL CMOS WR I TE
ADDRESS CMOS DIAGNOSTIC STATUS BYTE
GET CURRENT VALUE
SET BAD CONF[GURATION B[T
SETUP FOR WR I TE
UPDATE CMOS WITH BAa CONF]GURATION
BP,04000H
SET CONFIGURAT[ON BAD FLAG IN
AX
-
(BP)
ENDP
TEST4 5-83
1-4
IBM Personal Computer MACRO Assembler
VerSion 2.00
TEST4 ---- 06/10/85
POST AND 8105 UTILITY ROUTINES
316
317
318
31.
320
321
322
323
324
325
326
321
328
329
330
331
332
333
334
335
336
331
338
339
340
341
342
343
344
345
346
341
348
34.
350
351
352
353
354
355
356
351
358
359
360
361
362
363
364
365
366
367
368
36'
370
PAGE
;--- XPC...,:BYTE --
06-10-85
XLATE~PR
--
PRT~HEX
CONVERT AND PR I NT ASC I I
-----------------------------------
CODE CHARACTERS
AL CONTAINS NUMBER TO eE CONVERTED.
AX AND ex DESTROYED.
0118
0118
0119
OIIC
0 II F
0120
XPC_BYTE
50
CO E8 04
E8 0122 R
58
24 OF
PUSH
SHR
CALL
POP
AND
0 I 22
0 I 22 04 90
012421
0 I 25 14 40
012121
XLAT_PR PROC
ADD
OAA
Aoe
0 I 28
0 I 28
012A
012C
0 12E
PRT _HEX PROC
MOV
"OV
INT
RET
NEAR
PROC
AX
AL,4
XLAT_PR
AX
AL, OFH
DISPLAY TWO HEX DIGITS
SAVE FOR LOW NIBBLE 0 I SPLA Y
NIBBLE SWAP
00 THE HIGH NIBBLE DISPLAY
RECOVER THE NIBBLE
ISOLATE TO LOW NIBBLE
FALL INTO LOW NIBBLE CONVERSION
NEAR
AL,090H
CONVERT OO-OF TO ASC [[ CHARACTER
ADO FIRST CONVERSION FACTOR
AD-JUST FOR NUMERIC AND ALPHA RANGE
ADD CONVERSION AND ADJUST LOW NIBBLE
AD-JUST HIGH NIBBLE TO ASCI [ RANGE
AL,040H
OM
84 OE
B1 00
CD 10
C3
012F
012F
012F
NEAR
AH,OEH
BH,O
IOH
PRT HEX ENDP
XLAT PR ENDP
XPC_BYTE
01 SPLA Y CHARACTER
IN
(AL)
COMMAND
ENDP
; --- PRT SEG ---------------- - - - --- - ------ --------- -- -- ---------PR[NT A SEGMENT VALUE TO LOOK LIKE A 21 B[T ADDRESS
ox MUST CONTAIN SEGMENT VALUE TO BE PRINTED
; ------ - - 012F
012F
0131
0134
0136
0139
0138
013E
0140
0143
8A
E8
8A
E8
80
E8
80
E8
C3
C6
0118
C2
0118
30
0128
20
0128
R
R
R
R
0144
------------ -- -------
PRT SEG PROC
MOV
CALL
"DV
CALL
MDV
CALL
MOV
CALL
RET
NEAR
AL,OH
XPC BYTE
AL,DL
XPC BYTE
AL, '0'
PRT HEX
AL, T •
PRT _HEX
GET MSB
01 SPLA Y SEGMENT HIGH BYTE
LS8
01 SPLA Y SEGMENT LOW BYTE
PRINT A '0 •
TO MAKE LOOK LIKE ADDRESS
ADD ENDING SPACE
PRT SEG ENDP
PUT A CHARACTER TO THE DISPLAY BUFFERS WHEN
(ALJ
101 )
371
372
373
= ASC I I CHARACTER
= 0 I SPLA Y REGEN BUFFER
IN PROTECTED MODE
POS iT I ON
374
315
316
311
318
37.
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
3.7
3.8
3 ••
400
401
402
403
404
405
406
401
408
409
410
411
412
413
414
415
416
411
418
419
420
421
422
0144
0144 06
0145 51
0146 01 E1
PROT PRT HEX
PUSH
PUSH
SAL
PROC
ES
NEAR
SAVE CURRENT SEGMENT REGI STERS
01
DI,I
MULTIPLY OFFSET BY TWO
MONOCHROME V [OED CARD
0148
014A
0148
014C
6A 20
01
AA
4F
PUSH
POP
STOSB
DEC
BYTE PTR C BWCRT PTR
ES
-D[
GET MONOCHROME BUFFER SEGMENT SELECTOR
SET (ES) TO B/W D'ISPLAY BUFFER
PLACE CHARACTER [N BUFFER
ADJUST PO I NTER BACK
ENHANCED GRAPH I CS ADAPTER
0140 6A 30
014F 01
0 I 50 A'A
0151 4F
0152 6A 38
015401
0155 AA
0156 4F
PUSH
POP
STOSB
DEC
PUSH
PDP
STOSB
DEC
BYTE PTR E CCRT PTR
ES
--
01
BYTE PTR E CCRT PTR2
ES
-01
ENHANCED COLOR 0 I SPLA Y PO I NTER LOW 64K
LOAD SEGMENT SELECTOR
PLACE CHARACTER I N BUFFER
AD-JUST PO I NTER BACK
ENHANCED COLOR D I SPLA Y PO [NTER HI 64K
LOAO SEGMENT SELECTOR
PLACE CHARACTER I N BUFFER
AD-JUST PO I NTER BACK
COMPAT I BLE COLOR
0151 6A
0159 01
015A 53
015852
DI5C 51
0150 33
0 15F 8A
0162 93
0163
0163 EC
0164 A8
0166 EI
0 I 68 93
0169 AA
016A
016e
016C
0160
016E
016F
28
C9
03DA
BYTE PTR C CCRT PTR
-ES
8X
OX
SET
lOS)
TO COMPATIBLE COLOR MEMORY
CX,CX
DX,030AH
AX,BX
TIMEOUT LOOP FOR "BAD" HARDWARE
STATUS ADDRESS OF COLOR CARD
SAVE IN IBX) REGISTER
IN
TEST
LOOPZ
XCHG
STOSB
AL,OX
AL. RVRT+RHRZ
PROT S
AX,BX
GET COLOR CARD STATUS
CHECK FOR VERT I CAL RETRACE
TIMEOUT LOOP TILL FOUND
RECOVER CHARACTERS
PLACE CHARACTER I N BUFFER
ex
RESTORE REG I STERS
SAVE WORK REG I STERS
ex
PROT_S:
09
FB
59
5A
5B
5F
01
C3
POP
POP
PDP
PDP
POP
RET
0110
5-84
PUSH
POP
PUSH
PUSH
PUSH
XOR
"DV
XCHG
TEST4
OX
8X
01
ES
(OR HORZ I
1-5
IBM Personal Computer MACRO Assembler
VerSIon 2.00
TEST4 ---- 06/10/85
POST AND 8[05 UTIL[TY ROUTINES
423
424
425
06-10-85
PAGE
; --------- -;
ROM CHECKSUM SUBROUT I NE
---------- ----- ---------- ---
42b
421
428
429
430
431
432
433
434
435
43b
431
438
439
440
441
442
443
444
445
44b
441
448
449
450
4S1
452
453
454
455
45b
451
458
459
4bO
4bl
4b2
4b3
4b4
4b5
4bb
4b1
4b8
4b9
470
411
412
413
414
415
41b
411
418
419
480
481
482
483
484
485
48b
481
488
489
490
491
492
493
494
495
49b
491
498
499
500
50 I
502
503
504
505
506
501
508
509
0170
01702BC9
ROM CHECKSUM
SUB
0172
0172
0174
0174
0176
0177
ROM CHECKSUM CNT:
XOR AL,AL
32 CO
02 07
43
E2 FB
NEAR
NUMBER OF BYTES TO ADD
DR
RET
ROM_CHECKSUM
IS 64K
ENTRY FOR OPT I ONAL ROM TEST
GET (DS:BX)
PO I NT TO NEXT BYTE
ADD ALL 8YTES [N ROM MODULE
ADD
INC
LOOP
O! 79 OA CO
C3
o 17B
o 17C
PROC
CX,CX
AL,AL
=
SUM
01
ENDP
.; - - - - -- --THIS
- -- ----- --- - ---- - ------- - - -- - - -------- ------ - ----------- ----- --ROUT[NE CHECKSUMS OPTIONAL ROM MODULES AND
;
IF CHECKSUM IS OK, CALLS INIT[ALIZATION/TEST CODE IN MODULE
; - - - - - - - - - - --- - -- - -- - ---- - - - --- ----- - - -- - -- - --- - --- - - ---- - ------- - - -- - - -o 17C
017C B8
OI7F 8E
0181 2A
0183 8A
0186 CI
018988
0188 CI
018E 03
0190 E8
0193 74
---- R
CO
E4
47 02
EO 09
C8
E8 04
DO
0172 R
05
ROM CHECK:
MOV
MDV
SUB
MDV
5HL
MDV
SHR
ADD
CALL
JZ
0195 E8 0000 E
0198 E8 13
CALL
JMP
o 19A
o 19A
0198
0lA2
o I A7
01 AC
ROM CHECK I:
POSH
52
26: C7 06 0067 R 0003
MOV
26: 8C IE 0069 R
MDV
26: FF IE 0067 R
CALL
5A
POP
o lAD
o I AD
o IAE
C3
NEAR
PROC
AX,DATA
ES,AX
AH,AH
AL, [BX+2]
AX,9
CX,AX
AX,4DX,AX
ROM CHECKSUM CNT
ROM:=CHECK_I -
;
SET PO I NTER TO NEXT NODULE
DO CHECKSUM
ROM ERR
SHORT ROM_CHECK_END
POST CHECKSUM ERROR
AND EXIT
OX
SAVE POINTER
ES:!!IIO_ROM_INIT,0003H
LOAD OFFSET
ES: 1111 a ROM SEG, OS
j LOAD SEGMENT
DWORD PTR ES:OIO ROM INIT; CALL IN[TIALIZE/TEST ROUTINE
OX
-
-
ROM CHECK ENOl
RET
ROM_CHECK
; - - -
o IAE
01 AE 80 FF
OIBO E8 0000 E
0183 E3 23
j
PROC
NEAR
AL,OFFH
XMIT 8042
GI3
-
0lB5 3C FA
0187 75 IF
CMP
JNZ
AL,KB_ACK
CI3
0189
OIBB
OIBD
o IC2
0lC3
DIGS
0lG7
0lC7
OICC
DICE
80
E6
C6
F8
B3
28
MOV
OUT
MDV
01 NTR_FLAG, 0
DIDO
0102
0104
0104
0106
0108
0 I 08
FE C8
75 F3
SET KEYBOARD RESET COMMANO
GO I SSUE THE COMMANO
EX[T I F ERROR
MOV
SUB
BL,IO
CX,CX
ENABLE KEYBOARD INTERRUPTS
WRITE 8259 [NTERRUPT MASK REGI STER
RESET INTERRUPT INDICATOR
ENABLE INTERRUPTS
TRY FOR 400 M [LL I SECONDS
SETUP INTERRUPT TIMEOUT COUNT
TEST
JNZ
LOOP
(jIINTR _FLAG,02H
GI2
Gil
DID A KEYBOARD I NTERRUPT OCCUR
YES
READ SCAN CODE RETURNED
LOOP TILL TIMEOUT
NO
DEC
JNZ
BL
Gil
TRY AGAIN
IN
MOV
AL,PORT_A
8L,AL
READ KEYBOARD SCAN CODE
SAVE SCAN CODE JUST READ
AL,OFDH
INTAO! ,AL
5T1
OA
C9
RETURN TO CALLER
ENDP
K8D T~~;E~R;~~~~~~-; ~~~-~~~~-~-~;;~;~~~-~~~~~ -~~-~~~-~~;~~~~~~-----SCAN CODE
OAAH
SHOULD BE RETURNED TO THE PROCESSOR.
SCAN CODE
065H
[S DEFINED FOR MANUFACTURING TEST
KBD_RESET
MOV
CALL
JCXZ
FD
21
06 006B R 00
POINT ES TO DATA AREA
; ZERO OUT AH
; GET LENGTH I NO [CA TOR
MULTIPLY BY 512
SET COUNT
GIl:
F6 06 0068 R 02
75 06
E2 F7
,
-
G12:
E4 60
8A 08
G13:
C3
0109
RETURN TO CALLER
RET
KBD_RESET
ENDP
; -------------------------- - -- - --------
SID
511
Sl2
Sl3
Sl4
515
516
517
518
519
520
521
522
523
524
;
;
0109
0109 FB
OIDA 50
0108 E4 80
01003440
OIOF E6 80
OIEI 80 20
0 I E3 E6 20
0lE5 58
0lE6 CF
BLINK I NT
STI
PUSH
IN
525
526
0lE7
BL[NK INT
;
-----------------
BLINK LED PROCEDURE FOR MFG RUN-IN TESTS
IF LED IS ON, TURN IT OFF. IF OFF, TURN ON.
- - - - --- - - -- -- - - - - --- --- - - - - - -- - - ---- - -- - - - ----- ----- - --
XOR
OUT
MOV
OUT
PDP
IRET
PROC
NEAR
AX
AL,MFG PORT
AL,OlOo-00008
MFG PORT, AL
AL,EOI
INTAOO ,AL
AX
SAVE AX REGIStER CONTENTS
READ CURRENT VALUE OF MFG PORT
FLI P CONTROL 8 [T
-
RESTORE AX REGISTER
ENDP
TEST4
5-85
1-6
IBM Personal Computer MACRO Assembler
Version 2.00
TEST4 ---- 06/10/85
POST AND 8105 UTILITY ROUTINES
527
52.
529
530
531
532
533
534
535
536
537
536
539
540
541
542
543
544
545
546
547
54.
549
550
551
552
553
554
555
556
557
55.
559
560
561
562
563
564
565
566
567
56.
569
570
571
572
573
574
575
576
577
578
579
560
561
562
563
564
565
566
567
56.
56.
5'0
591
592
593
5'4
595
596
597
596
59.
600
601
602
603
604
605
606
607
606
60.
610
611
612
613
614
615
616
6"
618
61'
620
621
622
623
624
625
626
627
62'
629
630
631
632
633
634
635
636
637
06-10-55
PAGE
;
;
;
;
;
;
;
---- ---THIS
- ------------- ---- - ---- --- - ---- - ---- - --- - - -- - - - -- -- - -- - - - - - - -- - - - - - - - -ROUTINE INITIALIZES THE TIMER DATA AREA IN THE ROM BIOS
DATA AREA.
IT IS CALLED BY THE POWER ON ROUTINES.
IT CONVERTS
HR:MIN;SEC
FROM CMOS TO TIMER TICS.
IF CMOS IS INVALID, TIMER
IS SET TO ZERO.
INPUT
NONE PASSED TO ROUTINE BY CALLER
CMOS LOCAT IONS USED FOR T I ME
OUTPUT
ttTIMER LOW
;
;
;
!liT I MER-H I GH
;
IPTI MER-OFL
;
ALL REGI STERS UNCHANGED
;
~~~~;~ - ~~~ - - - - - - ~~~ - - -- - ~ ~ - --- - -- - - - - -
0012
0444
0007
0080
o IE7
01 E1
OlEa
01 E9
OIEC
OIEE
OIF!
0lF4
0lF7
0lF9
OIFC
OIFE
0200
0202
0202
0204
0207
0209
60
IE
Ea
2B
A2
A3
A3
80
E8
24
28
75
0034
CO
0070
006C
006E
8E
0000
C4
C9
64
R
COUNTS-M I N
COUNTS-HOUR
UPDATE:::TIMER
EQU
EQU
EQU
SET TOO PROC
PUSHA
PUSH
CALL
SUB
NEAR
R
R
R
MOV
MOV
MOV
MOV
R
CALL
AND
SUB
JNZ
1092
7
10000000B
-- - - ;~~~~ -~~; ~ - ~~~~~~~ ~ ~~ -~~~; ;~~ - - - -- --65543
65536
RTC UPDATE IN PROCESS BIT MASK
OS
DOS
ESTABLI SH SEGMENT
AX,AX
IPTIMER OFL,AL
RESET TIMER ROLL OVER INO[CATOR
oPT I MER-LOW, AX
AND T I MER COUNT
!liT I MER-H I GH, AX
AL, CMOS 0 I AG+NM I
CHECK CMOS VAll 0 ITY
CMOS READ
, READ DIAGNOSTIC LOCATION IN CMOS
AL,BAO BAT+BAo CKSUM+CMOS CLK FAIL
CX,CX -BAD-BATTERY, CHKSUM ERROR, CLOCK ERROR
CMOS NOT VALID -- TIMER SET TO ZERO
POD_DONE
UIP:
CALL
TEST
LOOPZ
AL,CMOS REG A+NMI
CMOS READ
AL, UPDATE T I MER
UIP
-
ACCESS REG I STER A
READ CMOS CLOCK REGISTER A
JCXZ
POD_DONE
CMOS CLOCK STUCK IF Tl MEOUT
MOV
CALL
TEST
LOOPNZ
AL,CMOS REG A+NMI
CMOS READ
AL,UPDATE TIMER
UIPOFF
-
NEXT WAIT TILL END OF UPDATE
0216 E3 4E
JCXZ
POD_DONE
CMOS CLOCK STUCK
0218
021A
0210
021F
80
Ea
3C
77
80
0000 R
59
48
MDV
AL, CMOS SECONOS+NMi
CMOS READ
AL,59H
TOO_ERROR
TIME JUST UPDATED
ACCESS SECONDS VALUE IN CMOS
ARE THE SECONDS WITH[N LIMITS?
GO IF NOT
0221
0224
0226
0229
0228
0220
022F
0231
0234
0236
0238
0238
023C
023E
0240
0241
0244
0246
0248
024A
0240
024F
E8
88
CI
83
F6
03
80
Ea
3C
77
E8
50
01
03
58
027F R
C8
E9 02
CALL
CVT BI NARY
CX,AX
CX,2
BL, COUNTS SEC
BL
CX,AX
AL,CMOS MINUTES+NMI
CMOS READ
AL,59H
TOO ERROR
CVT-B] NARY
AX AX,I
CX,AX
AX
CONVERT I T TO B I NARY
MOVE COUNT TO ACCUMULATl ON REG I STER
ADJUST FOR SYSTEMAT [C SECONDS ERROR
F7
03
80
E8
3C
77
E3
ca
84
0000 R
23
16
JA
0251
0254
0256
0258
025A
025C
025F
0263
OZ66
0266
0267
0268
E8
88
83
F6
03
83
89
A3
027F R
00
07
E3
CI
02 00
16 006E R
D06C R
MOV
MDV
MUL
ADD
ADC
MOV
MOV
0208
0200
0200
020F
0212
0214
0269
0269
026A
0268
026E
0271
0214
0277
0279
OZ7B
027E
80
E8
A8
EI
8A
0000 R
80
F7
E3 59
80
E8
A8
EO
8A
0000 R
80
F1
12
E3
C8
82
0000 R
59
31
027F R
E6
C8
88 0444
CMP
JA
MOV
SHR
MOV
MUL
ADO
MOV
CALL
CMP
JA
CALL
PUSH
SHR
ADD
POP
MOV
MUL
ADD
MOV
CALL
CMP
CALL
TOD ERROR;
POP
POPA
IF
61
BE
E8
B8
E5
DC
86
E8
C3
CALL
POD DONE:
POP
POPA
RET
IF
61
C3
0000
003C
8E8E
0000
04
C4
OOIA
~~,COUNTS_MIN
CX,AX
AL, CMOS HOURS+NM I
CMOS READ
AL,23H
TOO_ERROR
CVT BINARY
DX,AX
8L, COUNTS HOUR
BL
AX,CX
OX,OOOOH
PTIMER HICH,DX
eaT [MER=LOW. AX
[S ON
Os
MDV
S [ ,OFFSET E 163
R
CALL
E MSG
MOV
AX,X· (CMOS o[AG+NMI )
CMOS READ AL,CMOS CLK FAIL
AL,AH
CMOS_WRITE
R
CALL
OR
R
XCHG
CALL
ACCESS REG [STER A
READ CMOS CLOCK REG I STER A
[F TIMEOUT
COUNT FOR SECONDS
ACCESS MINUTES VALUE [N CMOS
ARE THE M[NUTES WITHIN LIMITS?
GO IF NOT
CONVERT I T TO B I NARY
SAVE MINUTES COUNT
A~JUST FOR SYSTEMAT[C MINUTES ERROR
ADD ADJUSTMENT TO COUNT
RECOVER BCD MINUTES VALUE
COUNT FOR M [NUTES
ADD TO ACCUMULATED VALUE
ACCESS HOURS VALUE [N CMOS
ARE THE HOURS WITHIN LIMITS?
GO IF NOT
CONVERT
I T TO B] NARY
COUNT FOR HOUR S
OS
E
RESTORE SEGMENT
RESTORE REGI STERS
01 SPLA Y CLOCK ERROR
SET CLOCK ERROR IN STATUS
READ D[AGNOSTIC CMOS LOCATION
SET NEW STATUS WITH CMOS CLOCK ERROR
MOVE NEW STATUS TO WORK REGI STER
UPDATE STATUS LOCATION
RE7
SET_TOO ENoP
8A
CO
24
05
C3
EO
EC 04
OF
OA
CVT BINARY
MOV
SHR
AND
AAD
PROC
AH,AL
AH,4
AL,DFH
RET
0259
5-86
WAIT TILL UPDATE BIT
UIPOFF:
027F
027F
027F
0281
0284
0256
0288
MOV
CVT_BINARY
TEST4
ENoP
NEAR
UNPACK 2 BCD DIG[TS IN AL
RESULT I SIN AX
CONVERT UNPACKED BCD TO B [NARY
IBM Perl:lonal Computer MACRO Assembler
Version 2.00
TEST4 ---- 06/10/85
POST AND 8[OS UTILITY ROUTINES
b38
b39
b40
b41
b42
b43
b44
b45
b4b
b47
b48
649
650
651
652
653
654
655
656
657
658
b59
660
661
662
663
664
665
666
667
668
669
1-7
06-10-85
PAGE
;--- D11 -- INT
?? H -- ( [RQ LEVEL ?? ) ------------------------------------: TEMPORARY INTERRUPT SERVICE ROUTINE FOR POST
;
TH I S ROUT [NE I S ALSO LEFT [N PLACE AFTER THE POWER ON 0 I AGNOSTI CS
;
TO SERVICE UNUSED INTERRUPT VECTORS.
LOCAT[ON "OINTR FLAG~ WILL
;
CONTAIN EITHER:
;
I) LEVEL OF HARDWARE INTERRUPT THAT CAUSED CODE TO BE EXECUTED, OR
;
2) "FF" FOR A NON-HARDWARE [NTERRUPT THAT WAS EXECUTED ACC I DENT ALL Y •
;
0289
0289
028A
0288
028D
028F
0291
0293
0295
0297
50
53
80
E6
E8
E4
8A
OA
15
Oil
PROC
PUSH
PUSH
"OV
OUT
J"P
IN
"OV
OR
JNZ
AL,INTAOO
AH,AL
AL,AH
HW_INT
0299
029B
0290
0290
029F
02A 1
02A3
02A5
02A7
02A9
84 FF
EB 2F
"OV
J"P
AH,OFFH
SHORT SET_INTR_FLAG
80
E6
EB
E4
8A
OA
74
08
AO
00
AO
F8
FF
10
"OV
OUT
J"P
IN
"OV
OR
JZ
AL,OBH
INT800,AL
E4
OA
E8
E6
80
E8
E6
E8
AI
C7
00
AI
20
00
AD
00
IN
OR
J"P
OUT
"OV
J"P
OU1
J"P
E4
E8
80
OA
E6
EB
21
00
E4 FB
C4
21
00
08
20
00
20
EO
C4
04
NEAR
AX
SAVE REGI STER AX CONTENTS
ex
AL, aBH
INTAOO,AL
'.2
'.2
AL,INTBOO
8H,AL
BH,BH
NOT_SEC
READ IN-SERVICE REGISTER
(FIND OUT WHAT LEVEL BEING
SERVICED}
GET LEVEL
SAVE IT
DO? INO HARDWARE ISR ACTIVE)
SET FLAG TO "FF"
IF NON-HARDWARE
READ IN-SERVICE REGISTER FROM
INTERRUPT CHIP #2
110 DELAY
CHECK THE SECOND INTERRUPT CH I P
SAVE IT
CONT I NUE I F NOT
b10
671
672
673
614
675
676
671
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
691
b98
699
02AB
02AO
02AF
0281
0283
0285
0287
0289
0288
0286
02BO
028F
02C2
02C4
02C6
02C8
02Ce
02CA
02CC
02CC
02CO
02CE
0201
0205
0206
0201
0207
BO 20
E6 20
NOT SEC:
IN
J"P
AND
OR
OUT
J"P
"OV
OUT
I NTR FLAQ:
POP
PUSH
CALL
"OV
POP
POP
DUMMY RETURN I:
IRETSET
58
IE
E8 0034 R
88 26 0068 R
1F
58
CF
0208
-
Oil
700
701
,'2
GET SECOND 1NTERRUPT MASK
MASK OFF LEVEL BE I NG SERV I CEO
I/O DELAY
,'2
SEND EO I TO SECOND CH I P
110 DELAY
INTBOI tAL
AL,EOI
INT800,AL
SHORT IS_SEC
AL,INTAOI
"2
AH,OFBH
AL,AH
INTAOI,AL
,.2
GET CURRENT MASK VALUE
1/0 DELAY
00 NOT
I SABLE SECOND CONTROLLER
MASK OFF LEVEL 8E I NG SERV I CEO
SET NEW I NTERRUPT MASK
110 DELAY
a
AL,EOI
INTAOO,AL
ex
05
ODS
IPINTR FLAG,AH
OS
AX
RESTORE I BX) FROM STACK
SAVE ACTIVE (OS)
SET DATA SEQMENT
SET FLAG
RESTORE REGI STER AX CONTENTS
NEED I RET FOR VECTOR T A8LE
ENDP
;--- HARDWARE INT
71 H -- ( IRQ LEVEL
9 I -- TO INT
; REDIRECT SLAVE INTERRUPT 9 TO INTERRUPT LEVEL 2
TH I S ROUT I NE FIELDS LEVEL 9 I NTERRUPTS AND
CONTROL IS PASSED TO MASTER INTERRUPT LEVEL 2
102
103
104
;
705
10b
107
708
109
110
11!
712
713
714
715
716
AL,INTBOI
AL,BH
0208
0208
0209
0208
0200
020E
50
BO 20
E6 AO
58
CD OA
--- -- - - - - - -- - - -- - - - - - - - - - - - -- - - - - -- -- - - - - - - -- -- - - - - - - - - - - -- - - - - -- - -- - - - -- -- ---
RE 0 I RECT PROC
PUSH
"OV
OUT
POP
INT
02EO CF
NEAR
AX
AL,EOI
[NTBOO,AL
AX
OAH
IRET
02El
OA H -------------------
SAVE
(AX)
EOI TO SLAVE INTERRUPT CONTROLLER
RESTORE I AX I
GIVE CONTROL TO HARDWARE LEVEL 2
RETURN
RE_DIRECT ENDP
117
718
;--- HARDWARE INT
75 H -- ( IRQ LEVEL 13 ) -.---------------------------------; SERVICE X281 INTERRUPTS
;
TH 1 S ROUT I NE FIELDS X281 I NTERRUPTS AND CONTROL
;
I S PASSED TO THE NM I I NTERRUPT HANDLER FOR
;
COMPATIBILITY.
119
120
721
122
123
124
725
726
727
128
129
130
131
732
133
734
735
136
131
738
739
740
741
742
743
744
745
746
747
748
749
750
;
02E 1
02El 50
02E2 32 CO
02E4 E6 FO
02E6
02E8
02EA
02EC
02ED
BO
E6
E6
58
CD
--- -- - - - - -- - - - - - - - - - - -- - - - - - -- -- - - - - - - - -- -- - - - - -- -- - - - - - -- -- - - -- - - - -- - -- - - - ---
INT 287 PROC
PUSH
XOR
OUT
20
AO
20
"OV
OUT
OUT
POP
INT
02
02EF CF
02FO
02F1
02F1
REMOVE THE
AL,EDI
INTBOO,AL
INTAQO,AL
AX
02H
ENABLE THE INTERRUPT
THE SLAVE
THE MASTER
RESTORE (AX)
GIVE CONTROL TO NMI
IRET
SAVE
(AX)
I NTERRUPT REQUEST
RETURN
INT 281 ENDP
-
02FO
02FO
02F2
02F4
02F4
02F5
NEAR
AX
AL,AL
X281,AL
PROC SHUTDOWN
-
BO FE
E6 64
"OV
OUT
-
PROC
AL, SHUT _ CMD
STATUS _PORT ,AL
COMMON 80286 SHUTDOWN WA I T
SHUTDOWN COMMAND
SEND TO KEY80ARD CONTROL PORT
PROC 51
F4
EB FD
HLT
J"P
PROC SHUTDOWN
CODE
ENDS
END
PRDC 5
-
WA I T FOR 80286 RESET
INSURE HALT
ENDP
TEST4 5-87
IBM Personal Computer MACRO Assembler
Version 2.00
TEST5 ---- 06/10/65
EXCEPTION INTERRUPT TEST HANDLERS
PAGE 118,121
TITLE TEST5 ---- 06/10/85
EXCEPTION INTERRUPT TEST HANDLERS
.286C
.LIST
CODE
SEGMENT BYTE PUBl I C
0000
PUBl I C
PUBLIC
8
9
"
12
13
3.
0000
0000
000080
0002 E9
0005
0005 80
0007 E9
00010.
00010. 80
OOOC E9
OOOF
OOOF 80
0011 E9
0014
001480
0016 E9
0019
0019 OE>
00110. 6A
ODIC 07
ASSUME
CS:CODE,DS:ABSO
90
0082 R
MOV
JMP
Al,90H
TEST_EXC
GO TEST
91
0082 R
MOV
JMP
Al.9IH
TEST_EXC
GO TEST
92
0092 R
MOV
JMP
AL,92H
TEST _EXC
GO TEST
93
0082 R
MOV
JMP
AL,93H
TEST_EXC
GO TEST
94
00B2 R
MOV
JMP
AL .94H
TEST_EXC
GO TEST
48
PUSH
PUSH
ES
BYTE PTR ES TEMP
ES
-
POP
36
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
I F EXCEPT I ON WAS EXPECTED
<><> SET CHECKPOINT <><>
I F EXCEPT I ON WAS EXPECTED
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
LOAD ES REG I STER WITH SELECTOR
F I X 80UND PARAMETERS
37
38
39
40
41
42
43
OOID
001F
0024
00210.
0028
0020
45
46
47
48
49
50
51
52
53
54
55
5E>
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
I 10
III
112
I 13
'14
0030
0030
0032
0034
0034
003E>
0038
0038
00310.
003C
003C
003E
0040
0040
0042
0044
0044
0046
0048
0048
004A
004C
004C
004E
0050
0050
0052
0054
0054
0056
0058
0056
00510.
005C
005C
005E
0060
0060
0062
0064
0064
0066
0068
0068
OO&A
006C
006C
006E
0070
0070
0072
0074
0074
0076
0078
0078
00710.
007C
007e
007E
0080
0080
0082
0084
0084
0086
0088
0088
00810.
008e
4.
POST5
SYSINITI
--- --- --- - - -- -- - - -- - - -- ---- - -- - ----- ---EXCEPTION INTERRUPT ROUTINE
:
; --- ---- -- -- -- -------- ------- -- - - ---- ---;
;
10
I.
15
16
17
18
19
20
21
22
23
2-4
25
26
27
26
29
30
31
32
33
34
I-I
06-10-85
5-88
28 FF
2E>: C7 05 0000
26: C7 45 02 7FFF
07
80 95
E9 0092 R
SUB
MOV
MOV
POP
MOV
JMP
01,01
;
WORD PTR ES: [DI ] ,0
;
WORD PTR ES:[DI+2j,07FFFH
ES
AL,95H
TEST_EXC
POINT BEGINNING OF THE BLOCK
SET FIRST WORD TO ZERO
; SET SECOND TO 07FFFH
BO 96
EB 7E
MOV
JMP
AL,96H
SHORT
TEST_EXC
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
BO 97
EB 7A
MOV
JMP
AL.97H
SHORT
TEST_EXC
GO TEST
BO 98
EB 7E>
MOV
JMP
AL,98H
SHORT
TEST_EXC
GO TEST
BO 99
E8 72
MOV
JMP
AL.99H
SHORT
TEST_EXC
GO TEST IF EXCEPTION WAS EXPECTED
BO 9A
EB 6E
MOV
JMP
AL,9AH
SHORT
TEST _EXC
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
BO 9B
EB 6A
MOV
JMP
AL,96H
SHORT
TEST_EXC
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
BO 9C
EB 66
MOV
JMP
AL ,9CH
SHORT
TEST_EXC
GO TEST
BO 9D
E8 62
MOV
JMP
AL,9DH
SHORT
TEST_EXC
GO TEST
BO 9E
EB 5£
MOV
JMP
AL,9EH
SHORT
TEST _EXC
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
BO 9F
EB 5A
MOV
JMe
AL,9FH
SHORT
TEST_EXC
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
BO AO
EB 56
MOV
JMP
AL,OAOH
SHORT
TEST_EXC
GO TEST
BO AI
EB 52
MOV
AL,OAIH
SHORT
TEST _EXC
GO TEST
80 A2
E8 4E
MOV
AL,OA2H
SHORT
TEST_EXC
GO TEST
BO 10.3
EB 410.
AL,OA3H
SHORT
TEST_EXC
GO TEST
BO A4
EB 46
AL,OA4H
SHORT
TEST_EXC
GO TEST
JMe
JMe
<><> SET CHECKPOINT <><>
GO TEST
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
•
<><> SET CHECKPO I NT <><>
<><> SET CHECKPO I NT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
I F EXCEPT I ON WAS EXPECTEO
<><> SET CHECKPOINT <><>
I F EXCEPT I ON WAS EXPECTED
<><> SET CHECKPOINT <><>
1F EXCEPT I ON WAS EXPECTED
BO A5
EB 42
MOV
JMe
AL,OA5H
SHORT
TEST _EXC
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
BO A6
E8 3E
MOV
JMP
AL,OA6H
SHORT
TEST_EXC
GO TEST
BO A7
E8 3A
MOV
JMP
AL, 010. 7H
SHORT
TEST_EXC
GO TEST
80 10.8
EB 36-
MOV
JMP
AL,OA8H
SHORT
TEST_EXC
GO TEST
BO A9
EB 32
MOY
JMP
AL,OA9H
SHORT
TEST_EXC
GO TEST
BO AA
E8 2E
MOV
JMP
AL,OAAH
SHORT
TEST_EXC
GO TEST
BO 10.8
E8 210.
MOV
JMP
AL,OABH
SHORT
TEST_EXC
GO TEST IF EXCEPTION WAS EXPECTED
AL,OACH
SHORT
TEST _Exe
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
BO AC
E8 26
TESTS
<><> SET CHECKPOINT <><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT ..;><>
IF EXCEPTION WAS EXPECTED
<><> SET CHECKPOINT <><>
I F EXCEPT I ON WAS EXPECTED
<><> SET CHECKPOINT <><>
I F EXCEPT I ON WAS EXPECTED
<><> SET CHECKPOINT <><>
I F EXCEPT I ON WAS EXPECTED
<><> SET CHECKPOINT <><>
1-2
06-10-85
I BM Persona I Computer MACRO Assemb I er
Vers; on 2.00
TESTS ---- 06/10/85
EXCEPTION INTERRUPT TEST HANDLERS
115
I 16
I 17
118
1 19
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
008C
008E
0090
0090
0092
0094
0094
0096
0098
0098
009A
009C
009C
009E
OOAO
OOAO
00A2
00A4
00A4
00A6
00A8
00A8
OOAA
OOAC
OOAC
OOAE
OOBO
0080
BO AD
EB 22
-
MOV
JMP
AL,OADH
SHORT
TEST _EXC
<><> SET CHECKPO 1NT <><>
GO TEST IF EXCEPTION WAS EXPECTED
MOV
JMP
AL,OAEH
SHORT
TEST_EXC
<><> SET CHECKPO I NT <><>
GO TEST IF EXCEPTION WAS EXPECTED
MOV
JMP
AL,OAFH
SHORT
TEST_EXC
<><> SET CHECKPOINT <><>
GO TEST IF EXCEPTION WAS EXPECTED
MOV
JMP
AL,080H
SHORT
TEST_EXC
GO TEST
MOV
JMP
AL,OBIH
SHORT
TEST_EXC
GO TEST
MOV
JMP
AL,OB2H
SHORT
TEST _EXC
GO TEST
MOV
JMP
AL,OB3H
SHORT
TEST _EXC
GO TEST
MOV
JMP
AL,OB4H
SHORT
TEST_EXC
GO TEST
MOV
JMP
AL,OB5H
SHORT
TEST _EXC
GO TEST IF
MOV
AL , OB6H
EXC 30:
BO AE
EB IE
EXC 31:
-
BO AF
EB 1 A
5Y5 32:
-
BO BO
EB 16
-
IF
I NTERRUPT WAS EXPECTED
<><> SET CHECKPOINT <><>
IF
INTERRUPT WAS EXPECTED
5Y5 34:
-
BO 82
E8 DE
-
<><> SET CHECKPOINT <><>
IF
INTERRUPT WAS EXPECTED
5Y5 35:
BO B3
EB OA
<><> SET CHECKPOINT <><>
IF
INTERRUPT WAS EXPECTED
5Y5 36:
-
BO 84
E8 06
-
<><> SET CHECKPOINT <><>
IF INTERRUPT WAS EXPECTED
5Y5 37 :
BO B5
EB 02
80 86
5Y5 - 38:
<><> SET CHECKPOINT <><>
GO TEST
00B2
00B2 E6 80
00B4 3C AF
00B6 77 I C
TEST EXC:
OUT
INTERRUPT WAS EXPECTED
<><> SET CHECKPO I NT <><>
143
144
145
146
147
148
<><> SET CHECKPOINT <><>
5Y5 33:
BO 81
EB 12
IF INTERRUPT WAS EXPECTED
JA
MFG PORT ,AL
AL IOAFH
TEST_EXCO
PUSH
PUSH
POP
MOV
MOV
PUSH
POP
POP
POP
POP
PUSH
CMP
JNZ
OS
SAVE THE CURRENT DATA SEGMENT
BYTE PTR GOT PTR
OS
OS: ES TEMP. SEG LI MIT, MAX SEG LEN
BYTE PTR OS: (E'S TEMP.DATA Ace RIGHTS) ,CPLO DATA ACCESS
BYTE PTR ES TEMP
-ES
OS
RESTORE REG I STERS
OX
CHECK I F CODE SEGMENT SECOND ON STACK
CX
CX
CX,SYS ROM CS
TEST _EXCO CONTI NUE I F ERROR CODE
eMP
OUTPUT THE CHECK PO I NT
CHECK FOR EXCEPT I ON
GO IF A SYSTEM INTERRUPT
149
150
151
152
153
154
155
156
157
158
159
160
161
162
00B8
00B9
OOBB
008C
00C2
00C7
00C9
OOCA
OOCB
OOCC
1E
6A 08
IF
C7 06 0048 FFFF
C6 06 0040 93
6A 48
07
IF
SA
59
ODeD 51
OOCE 83 F9 40
0001 7501
163
164
165
166
167
168
169
110
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
0003
0004
0004
0006
0008
OODA
OODC
OODC
OODE
OOEO
00E2
52
86
E4
3A
74
EO
8B
C4
OE
IN
eMP
JZ
TEST EXC I:
-
E4 80
3C 38
72 01
CF
00E3
00E3
ODES
00E7
00E8
86 EO
E6 80
F4
EB F9
OOEA
OOEA
OOEC
OOEE
OOFI
2A CO
E6 88
B8 0 roo
CF
167
IN
CMP
JB
TEST EXC2:
XCHG
OUT
HL T
JMP
TEST EXC3:
SUB
OUT
MOV
OOFD
0100
0101
0104
0 I 05
0108
B8 0800
AB
B8DOAO
AB
B8 0000
AB
WAS THE EXCEPTiON EXPECTED7
GO IF YES
CHECK THE CURRENT CHECKPD I NT
HALT IF CHECKPO I NT BELOW 3SH
AH,AL
MFG_PORT, AL
OUTPUT THE CURRENT CHECK PO I NT
<><> CHECKPOINT 90 THRU B5 <><>
TEST_EXC2
INSURE SYSTEM HALT
AL,AL
OMA PAGE+OAH,AL
AX,0100H
CLEAR DMA PAGE
SYSINITI
81
80
0149 R
EF
NEAR
NO I NTERRUPTS ALLOWED
SAVE BP
PUSH
BP
MOV
OUT
CALL
MOV
AL,81H
MFG PORT ,AL
SlOT BLD
BP,OI
MOV
AX,SYS_IDT_LEN
<><> <> <> <> <> <> <> <><><><>
<><> CHECKPO I NT 8\ <><>
STOSW
MOV
MOV
AX,O
STOSW
SEGOV
ES
OB
aiDA
OIOB
010B
OIOE
OIOB
OIOB
010E
0 I DE
OB
nOOOI
LABEL
MOV
nOOO2
LA8t::L
BYTE
ORG
OB
ORG
MOV
OFFSET CS:??OOOI
OOIH
OFFSET CS: n0002
DI,BP
8B 5E 00
SAVE THE POINTER TO JUST PAST THE [OT
AS WE HAVE NO SDA, USE THE SIX BYTES
HERE TO LOAD THE IDTR.
WE W]LL SlOT
WHEN WE GET TO SOA INITIALlZAT[ON.
SEGMENT LIMIT = LENGTH OF lOT
STORE TI-IAT AS ]OT LIMIT
lOT ADDRESS
AND ACCESS RIGHTS BYTE (UNOEF I NED)
LOAD THE
026H
[BP]
OOFH
BYTE
BX,WORD PTR
LlDT
OF
8B FD
AX , SYS_IDT_LOC
STOSW
010926
01
(INT 5)
CS: CODE ,OS: NOTH I NG ,ES: NOTH I NG, SS: NOTH I NG
PROC
CLI
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
FOR BOUND INSTRUCTION EXPECTED
RETURN
THIS BUILDS THE DESCRIPTOR TABLES REQUIRED FOR PROTECTED MODE
PROCESSOR MUST BE IN REAL MODE
202
203
204
205
206
207
208
209
210
211
SAVE THE CHECKPOINT
AL,MFG PORT
AL, 03sR
TEST_EXC2
IRET
ASSUME
FA
55
BO
E6
E8
8B
PUT SEGMENT BACK ON STACK
AH,AL
AL,DMA PAGE+OAH
AL,AH TEST_EXC3
---
,
00F2
00F2
OOF3
00F4
00F6
OOF8
OOFB
OX
IRET
;
186
169
190
191
192
193
194
195
196
197
198
199
200
201
PUSH
TEST EXCO:
XCHG
-
lOT
REG I STER FROM TH] S AREA
[BP]
ES:O]
NOW
--> END OF [DT AGAIN
BUILD THE GOT.
0110 8F
01 13 E8
01 16 88
011888
011B AB
08AO
0140 R
EF
0088
MOV
CALL
MOV
MOV
STOSW
01 ,GOT LOC
GOT BLO
BP,OI
AX,GDT_LEN
SAVE THE ES:DI POINTER
AX = LENGTH OF THE GOT
PUT THAT IN THE LIMIT FIELD
TESTS
5-89
1-3
[BM Personal Computer MACRO Asselllbler
Version 2.00
TEST5 ---- 06/10/55 EXCEPTION INTERRUPT TEST HANDLERS
229
230
231
232
233
23.
235
236
231
236
239
2.0
2.,
2.2
2.3
2"
2.,
2.5
2.6
2'6
2'9
250
251
252
253
25.
255
256
251
256
259
260
261
2.2
263
26.
2.5
266
261
266
269
210
211
212
273
274
275
216
211
216
219
260
261
262
283
26.
265
266
267
266
269
290
291
292
293
29.
295
296
291
296
299
300
301
302
303
30.
305
306
301
306
309
310
311
312
313
31.
315
316
311
316
319
320
321
322
323
OIICB505AO
OIIF AB
0120 B5 0000
0123 AB
0124 26
0125
0126
0126
0129
0126
0126
0129
0129
012B
012C
0120
OF
110004
5B 56 00
170005
aI
5B FO
AB
A8
58 Fo
"OV
STOSW
"OV
STOSW
SEGOV
OB
LGDT
OB
LABEL
"OV
LA8EL
ORG
OB
ORG
"OV
STOSW
STOSW
"OV
06-10-85
AX,GOT_LOC
AX,O
E5
026H
[BP]
OOFH
BYTE
OX, WORD PTR [BP]
BYTE
OFFSET CS:?10004
00 I H
OFFSET CS I 110005
ol,BP
AX '" LOW WORD OF GOT ADDRESS
PUT THAT IN BASE FIELD - LOW
AX '" HIGH BYTE OF ADDRESS, AND
ACCESS RIGHTS BYTE IS UNDEFINED
LOAD THE GDTR
FROM THI S AREA
RESTORE THE ES: D I PO INTER
DI,BP
SW I TCH TO V I RTUAL MODE
o 12F 50
0130 B5 0001
0133 OF 01
0136
0137
0139
013B
013B
0130
o 13F
POP
MOV
LMSW
OB
FO
EA
013B R
0040
-
RESTORE SP
MACH I NE STATUS WORD NEEDED TO
SW I TCH TO V I RTUAL MODE
OOFH,OOIH,OFOH
OEAH
OFFSET DONE
SYS_ROM_CS
OB
Ow
JUMP FAR TO PURGE PRE-FETCH QUEUE
TO OFFSET
I N SEGMENT
DONE:
BO 55
E6 50
C3
"OV
OUT
RET
BE OlAF R
89 0044
F31 A5
C3
0149
0149
014C
014E
0150
0153
0155
0157
015A
015C
015E
0161
BE
BC
5E
BF
2B
8E
BB
B6
82
B9
0161
A5
0162
0164
0165
0167
0168
016B
016C
016E
0171
8B
AB
8B
AB
B8
AB
E2
89
Bo
NEAR
SI,OFFSET GOT DATA START
; DS:SI --> GOT
CX, (OFFSET GOT DATA END-OFFSET GOT DATA START) /2
; WORD COUNT
MOVSW
-; COpy GOT I NTO MEMORY
SloT_BLD
PROC
"OV
"OV
SUB
"OV
"OV
"OV
"OV
"OV
lOT:
MOVSW
"OV
STOSW
MOV
STOSW
"OV
STOSW
LOOP
"OV
"OV
CZ
0000
F3
ODED
0277 R
onc
26
26
26
26
26
26
26
C3
C7
C1
C7
C7
C7
C7
C7
lOT.
NEAR
THE
lOT WILL CONTAIN VECTORS FOR EXCEPTION HANDLERS
SI,OFFSET SYS lOT OFFSETS
; MAKE OS:SI POINT TO
AX,CS
;
INTERRUPT ENTRY POINTS
DS,AX
01, SYS lOT LOC
AX,AX ES,AX
WHERE THE lOT WILL BE.
BX,SYS ROM CS
CS I S THE SAME FOR ALL INTERRUPTS
OH, TRAP GATE
ACCESS RIGHTS BYTE FOR THE GATE
CL,O
THE WORD COUNT FIELD I S UNUSED
THERE ARE 32 RESERVED [NTERRUPTS
CX,32
TH [S LOOP BU I LOS 32 DESCR I PTQRS I N THE
lOT FOR THE RESERVED INTERRUPTS
GET A ROUT I NE ENTR Y PO I NT
AND PUT IT IN THE OFFSET FIELD
AX,BX
GET THE SYSTEM CODE SEGMENT SELECTOR
AND PUT I TIN THE SELECTOR F [ELO
AX,DX
GET THE INTERRUPT GATE BYTE
AND PUT IN THE ACCESS RIGHTS FIELD
AX,O
ZERO OUT
THE RESERVED POS [T I DNS
AND REPEAT AS DIRECTED
LOW lOT
CX,256-32
256 TOTAL - 32 DONE = WHATEVER [S LEFT
BP, OFFSET FREE_ [NTS
THERE IS A COPY OF AN UN-INITIALIZED
[NTERRUPT OEseR I PTOR AT FREE _, NTS
HIGH_lOT:
"OV
OS:SI --> FREE DESCRIPTOR
(ES:OI LEFT OFF AT INT 321
MOVE OFFSET OF THE I RET I NSTRUCT I ON
MOVE THE CS SELECTOR
MOVE THE ACCESS RIGHTS BYTE
ZERO OUT THE RESERVED WORD
FILL THE REMAINDER OF THE TABLE
SI,BP
MOVSW
MOVSW
MOVSW
STOSW
LOOP
06
06
06
06
06
06
06
olAO
DIA8
0180
0188
olCO
DIC8
DIDO
0098
009C
OOAO
00A4
OOA8
OOAC
OOBO
;-----
INITIALIZE THE ENTRY POINTS FOR POST TEST
R
R
R
R
R
R
R
"OV
"OV
"OV
"OV
"OV
"OV
MOV
ES:
ES:
ES:
ES:
(SYS lOT LDC+(032-DESC LEN)
(SYS- I OT-LOC+ (033-0ESC-LEN)
(SYS-IDT-LOC+ I 034·DESC-LEN)
(SYS-IOT-LOC+(035-0ESC-LENI
.ENTRY POINT)
• ENTRY-PO I NT)
.ENTRY-PO I NT)
.ENTRY-POINT)
,OFFSET
,OFFSET
,OFFSET
,OFFSET
SYS 32
SYS-33
SYS-34
SYS-35
~~; i~~~::gi=~gg::g;~:g~~g=~~~: :~~i=~:~g:~i: :g~~~~i ~~~:;~
ESI (SYS::::IDT::::LDC+(038-DESC::::LENI .ENTRY:POINTI ,OFFSET SYS:38
RET
OIAE
OIAE CF
S-90
BUILD THE
MOV
"OV
C3
A5
A5
A5
AS
E2 F8
INITIALIZATION
GOT BLD PROC
MOV
"OV
REP
RET
GOT _BLD ENoP
LOW
0176
0177
0178
0179
017A
SYSTEM
ENDP
0237 R
C5
05
oOAO
CO
CO
0040
87
00
0020
0114
0174 8B F5
<><><><><><> <><><> <> <> <>
<><> CHECKPOINT 82 <><>
AL,55H
MFG_PORT ,AL
SYSINITI
;-----
0183
018A
0191
0198
019F
0lA6
o I AD
AX
OW
0140
0140
0140
0143
0[46
0145
0149
BP
AX, V I RTUAL ENABLE
IRET ADDR
IRET
-
TESTS
LABEL
WORD
; FOR UN- I NIT I AL I ZED
; NULL RETURN
INTERRUPTS
[BM Personal
Computer
TESTS ---- 06/10/85
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
MACRO Assembler
EXCEPTION
VersIon
1-4
2.00
06-10-85
INTERRUPT TEST HANDLERS
PAGE
THE FOLLOWING DATA DEFINES THE PRE-INITIALIZED GOT FOR POST TESTS.
THESE MUST BE INITIALIZED IN THE ORDER IN WHICH THEY APPEAR IN THE
GDT_DEF STRUCTURE DEFINITION AS IT IS IN "SYSDATA.INC".
~
OlAF
GDT_DATA_START
EQU
(UNUSED_ENTRY)
FIRST ENTRY UNUSABLE
OlAF
D1BI
0183
0184
0185
SEGMENT LIMIT
SEGMENT BASE ADDRESS - LOW WORD
SEGMENT BASE ADDRESS - HIGH BYTE
ACCESS RIGHTS BYTE
RESERVED - MUST BE ZERO
DW
DW
0000
0000
00
00
0000
DB
DB
DW
THE GOT
ITSELF
0181 0088
0189 D8AD
DW
DW
GOT LEN
GDT-LOC
00
DIBC 93
01BD 0000
DB
DB
CPLO DATA ACCESS
0188
DW
o
THE SYSTEM
OIBF 0800
DIGI
DOAD
o IC3 00
Q1C4 93
DIGS 0000
[DT DESCRIPTOR
DW
DW
D8
SYS lOT LEN
SYS-IDT-LOC
DB
CPLO DATA ACCESS
DW
SEGMENT LIMIT
SEGMENT BASE ADDRESS - LOW WORD
SEGMENT BASE ADDRESS - HIGH BYTE
ACCESS RIGHTS BYTE
RESERVED - MUST BE ZERO
o -
o o
ISYS_IDT_PTR)
SEGMENT LIMIT
, SEGMENT BASE ADDRESS - LOW WORD
; SEGMENT BASE ADDRESS - HIGH BYTE
I ACCESS RIGHTS BYTE
; RESERVED - MUST BE ZERO
-
-
-
THE SYSTEM DATA AREA DESCRIPTOR
o IC7 0300
OlG9 0400
ICB 00
a I CC 93
DW
DW
D8
D8
DW
o
OIGD 0000
SDA LEN
SDA-LOC
-
IRSOA_PTR)
SEGMENT LIMIT
SEGMENT BASE ADDRESS - LOW WORD
SEGMENT BASE ADDRESS - HIGH BYTE
ACCESS RIGHTS BYTE
RESERVED - MUST BE ZERO
o CPLO OAT A ACCESS
o -
COMPATIBLE MONOCHROME DISPLAY REGEN BUFFER
o ICF
1000
0101 0000
0103 OB
0104 93
0105 0000
DW
DW
D8
D8
DW
MCRT SIZE
MCRT@ LO
MCRT<> <> <><><><><><><><><>
,
<><> CHECKPOINT
32 <><>
; RESTORE AX (SET AX TO ZERO)
; EXIT IF PARITY ERROR
64K ADDRESS TEST AND FILL WITH ZERO
OEC
AX
SUB
MOV
SUB
STOSW
INC
REP
01,01
CX,8X
CX,2
DEC
AX
STOSW
SUB
MOV
SUB
LOOSW
XOR
JNZ
WRITE FIRST AND LAST LOCATION=FFFF
POINT TO START OF 8LOCK
GET THE BLOCK COUNT
00 ALL LOCATIONS BUT LAST
WRITE FIRST LOCATION AS FFFFH
WR I TE ZERO
WRITE [T
LAST WORD 1S FFFF
AX
STOSW
S I, S I
POINT TO START OF BLOCK
GET THE 8LOCK COUNT
CX,BX
CX,2
GET THE DATA
CHECK CORRECT
EXIT IF NOT
AX ,OFFFFH
CI3
CI2A:
AD
OB
EI
75
AD
35
75
LOOSW
OR
LOOPZ
JNZ
LOOSW
XOR
JNZ
CO
F8
A2
FFFF
9C
; -----
OOEC
OOEE
OOEF
00F2
;
;
;
CHECKPOINT 32 FOR ADDRESS LINE 0->15 FAILURE
MOV
;-----
AL,PORT 8
AL,AH
AL,OMA PAGE+6
AH,AL -
2B FF
A8
8F FFFE
AB
AX ,OFFFFH
CI3
CLEAR WORD 0 AND FFFE
SUB
STOSW
MOV
STOSW
; -----
GET NEXT DATA
ANY 81T ON ?
CONTINUE TI LL LAST WORD
GO I F NOT CORRECT
GET LAST WORD
S/8 FFFF
EXIT IF NOT
AX,AX
C!2A
CI3
CLEAR FIRST WORD
01,01
0 I ,OFFFEH
CHECK FOR
;
CLEAR TOP WORD
I/O OR 8ASE MEMORY
221
222
223
224
225
226
227
228
00F3
00F5
OOFl
00F9
00F8
OOFE
0100
5-94
E4
86
E4
22
B8
EB
61
C4
81
EO
0000
88
IN
XCHG
IN
ANO
MOV
JMP
STGTST_CNT
TEST6
AL,PORT 8
AL,AH
AL ,OMA PAGE+6
AH,AL AX,O
CI3
ENOF
CHECK FOR I/O - PARITY CHECK
SAVE ERROR
CHECK FOR R/W OR I/O ERROR
SET AX EQUAL ZERO
ERROR EX I T IF ZF NOT SET
1-3
IBM Per50nal Computer MACRO A55embler
Ver5,on 2.00
TEST6 ---- 06/10/85
POST TESTS AND SYSTEM BOOT STRAP
229
230
231
232
233
234
235
236
237
236
239
240
241
242
243
244
245
246
247
246
249
250
251
252
253
254
255
256
257
256
259
260
261
262
263
264
265
266
267
266
269
270
271
272
273
274
275
276
277
276
279
260
261
262
263
264
265
266
267
266
269
290
291
292
293
294
295
296
297
296
299
300
301
302
303
304
305
306
307
306
309
310
311
312
313
314
315
316
317
316
319
320
PAGE
;- -;~ ~ ~~ - ~~~~~~ ~ - ~~~ - ~;;~~ - ~~~ ~~;~ - ;~~ - ~;~ - ~~~~~ ~~~ - ~;~~; ~ - -- - - - - - - - - --- --
~~~
0100
0100
a 1a 1
0102
0103
a I 06
0108
0109
010A
Dl0C
011181 FA C8DO
01151COO
0111 E8 0000 E
aliA BE 0000 E
0110 E8 0000 E
0120
0120 58
012! 01
0122 5A
0123 C3
0124
0124 BA 0 I 02
0121 E8 0000 E
OIZA EB F4
o 12C
-
~~;
-
52
06
50
B8 ---- R
8E CO
58
50
8C DA
26: 88360015 R
- ;;;; - - - -
~~~;
- - - - - - --- -- - -- -- - - - - -- - - -- ---- - - - -- --- - ------- - - - - ----
PUSH
PUSH
PUSH
MOV
MOV
POP
PUSH
MOV
MOV
OX
ES
AX
AX,DATA
ES,AX
AX
AX
DX,DS
ES: IIIMFG_ERR _FLAG, DH
C"P
DX,OC8DOH
ROM ERR BEEP
PRT-SEGS I ,OFFSET F3A
E_MSG
JL
CALL
"OV
CALL
ROM ERR END:
-POP
POP
POP
SAVE POINTER
SET ES TO DATA SEGMENT
RESTORE AX
GET ADDRESS POINTER
<> <> <> <> <> <> <> <> <> <> <> <><><>
<><> CHECKPOINTS CO->F4 <><>
OJ SPLAY CARD IN ERROR?
GIVE OISPLAY CARD FAIL BEEP
PRINT SEGMENT IN ERROR
D I SPLA Y ERROR MESSAGE
AX
ES
OX
RET
ROM ERR BEEP:
-MOV
CALL
; BEEP I LONG, 2 SHORT
DX,DI02H
ERR SEEP
SHORT ROM_ERR_END
J"P
ROM_ERR ENDP
; - - - - - - - - - - - -- -- - - - - - - - - - - - - - - - - - - -- - - -- - - - -- -- - ---; TH IS SUBROUTI NE SENDS AN OUTPUT COMMAND TO THE KEYBOARD ANO
RECE I VES THE KEYBOARD RESPONSE.
ENTRY REQU I REMENTS:
AL
COMMAND/DATA TO BE SENT
EXIT PARAMETERS:
ZERO FLAG = I IF ACK RECE J VED FROM THE KEY BOARD
AL = RESPONSE
-
-
----
---
------
=
~~ ~ ~ ~ ~ ~~;
o 12C
;- - - - -
o 12C
86 EO
012E 2B C9
0130
0130 E4 64
0132 A8 02
0134 EO FA
0136 E3 34
0138 86 EO
AL,STATUS PORT
~~ i +~66pBOF _FULL
JCXZ
SHORT XMIT EXIT
AH,AL
-
CHECK
I NPUT SUFFER FULL
RESTORE COMMAND
1 SSUE THE COMMAND
SEND THE COMMAND
SET LOOP COUNT
OUT
SUB
;- - - - 64
EO
01
02
60
C4 02
Fl
10
SAVE COMMAND
SET LOOP TIME-OUT
AH,AL
CX,CX
TEST
LOOPNZ
XCHG
;-----
E4
8A
A8
14
E4
F6
EO
15
I NPUT BUFFER FULL
IN
E6 60
013C 2B C9
013E
0140
0142
0144
0146
0148
014B
0140
- ;;;; -- ~~~; - - - ----- - -- ------ - - - ---- -- - - - -- -- - --- - - - --- -- - ---
CHECK
XCHG
SUB
XMITLOOP:
o 13A
CHECK OUTPUT SUFFER FULL
XMIT_I:
IN
"OV
TEST
JZ
IN
XMIT_2: TEST
LOOPNZ
JNZ
AL,STATUS PORT
AH,AL
-
SAVE STATUS
CHECK IF B042 HAS DATA
GO IF NOT
FLUSH DATA
CHECK COMMAND ACCEPTED
~~ i ~U~_BUF JULL
AL,PORT A
AH, I NPT-SUF FULL
XMIT I SHORT XMIT_EXIT
NO FLUSH OR COMMAND NOT ACCEPTED
CHECK OUTPUT BUFFER FULL
014F
0151
0153
0155
0151
0159
015B
0150
015F
0161
S3
2B
E4
A8
EI
15
FE
15
FE
EB
06
C9
64
01
FA
08
CB
F4
C3
09
"OV
XMIT_3:
SUB
IN
TEST
LOOPZ
JNZ
DEC
JNZ
INC
J"e
SET COUNT
SET LOOP COUNT
BL,6
cX,ex
AL,STATUS PORT
AL, OUT SUF FULL
XMIT 3XMIT-4
BL
SHORT XMJT 3
BL
SHORT XMIT_EXIT
CHECK I F HAS OATA
WAIT TILL DONE
DECREMENT OUTER LOOP
TRY AGAIN
SET ERROR FLAG
8042 STUCK BUSY
GET THE DATA
0163 2B C9
XMiT_ 4:
SUB
CX,CX
0lb5
0161
0169
016C
16C
0160
XMIT_5:
LOOP
XMJT 5
AL,PORT A
CX,OIH -
a
E2 FE
E4 60
83 E9 01
C3
IN
SUB
XMIT EXIT:
RET
XMIT_B042 ENDP
ALLOW T I ME FOR POSS IBLE
ERROR -> SYSTEM UNIT OR KEYBOARD
SET
ex
OTHER THAN ZERO
;--- BOOT_STRAP -- INT
19 H -------------------------BOOT STRAP LOADER
TRACK 0, SECTOR I I S READ I NTO THE
BOOT LOCATION (SEGMENT a OFFSET 1COO)
AND CONTROL I S TRANSFERRED THERE.
321
322
323
324
325
326
327
326
329
330
331
332
333
334
335
336
337
336
339
340
341
342
06-10-85
I F THERE
;
; ----
[S A HARDWARE ERROR CONTROL
[S
TO THE ROM BAS I e ENTRY PO [NT
-- - TRANSFERRED
- - - - - - - -- - -- - - - ---- - - - - ------- - ----- - - - - --- - - -ASSUME CS:CODE.DS:ABSO,ES:ASSO
OlbO
0160 B8 ---- R
0110 8E 08
0112 8E CO
SOOT_STRAP _I
"OV
"OV
"OV
PROC
AX,ABSO
DS,AX
ES,AX
NEAR
;
ESTABLISH ADDRESSING
RESET THE 0 I SK PARAMETER TABLE VECTOR
0114 C1 06 0018 R 0000 E
017A 8C OE 001A R
"OV
"OV
TEST6 5-95
1-4
06-10-85
IBM Personal Computer MACRO Assembler
Version 2.00
TEST6 ---- 06t I 0/85
POST TESTS AND SYSTEM BOOT STRAP
343
344
345
346
347
34B
349
350
351
352
353
354
355
356
357
35B
359
360
361
362
363
364
365
366
367
36B
369
370
371
372
373
374
375
376
377
37B
379
380
381
382
383
384
385
3B6
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
CLEAR IIIBOOT_LOCN
017E
0180
0183
0186
33 CO
B9 0100
BF 7COO R
F31 AB
0188
0189
o 18C
0180
o 18F
0191
FB
B9 000451
B4- 00
CD 13
72 OF
0193
0196
0198
o 19A
0190
01 AO
01 A2
a I A3
o lAS
o IA8
01 AA
01 AC
BB
2B
8E
BB
B9
CD
59
73
80
74
E2
EB
XDR
MDV
MDV
REP
;-----
HI:
020 I
02
C2
7COO R
000 I
13
H2:
09
FC 80
22
EO
1E
;-----
01 AE 80 3E 7COO R 06
01 B3 72 71
H4:
AX,AX
CX,256
01 ,OFFSET IIIBOOT LOCN
STOSW
-
CLEAR 256 WORDS
;
LOAD SYSTEM FROM DISKETTE -- CX HAS RETRY COUNT
ST1
MDV
PUSH
MDV
1NT
JC
CX,4
CX
AH,O
13H
H2
SET RETRY COUNT
I PL SYSTEM
RESET THE DISKETTE SYSTEM
DISKETTE 10
IF ERROR-;- TRY AGA I N
MDV
SU8
MDV
MDV
MDV
1NT
PDP
JNC
CMP
JZ
LOOP
JMP
AX,20lH
DX,DX
ES,DX
8X. OFFSET 'lISOOT LOCN
CX, I
13H
CX
H4
AH,80H
H5
HI
SHORT H5
DRIVE 0, HEAD a
SECTOR I, TRACK 0
DISKETTE 10
RECOVER RETRY COUNT
CARRY FLAG SET 8Y UNSUCCESSFUL READ
IF TIME OUT, NO RETRY
TRY FIXED DISK
DO I T FOR RETRY TIMES
TRY FIXED DISK
REAO I N THE SINGLE SECTOR
TO THE BOOT LOCATION
800T RECORD READ SUCCESSFUL
INSURE FIRST 8YTE OF LOADED 800T RECORD
eMP
J8
BYTE PTR (!0800T LOCN,06H
HIO
-
IS VALID
INOT ZERO)
; CHECK FOR FIRST INSTRUCTION INVALID
; IF 800T NOT VALID PRINT MESSAGE HALT
INSURE DATA PATTERN FIRST 8 WORDS NOT ALL EQUAL
01 B5 BF 7COO R
0lB8 B9 0008
0lB8 AI TCOO R
o 18E
OICI
o IC3
o IC5
83
3B
EI
74
C7 02
05
F9
5F
H4A:
MDV
MDV
MDV
01 ,OFFSET 'lI800T LOCN
CX,8
AX,WORD PTR @800T_LOCN
CHECK OAT A PATTERN
CHECK THE NEXT 8 WORDS
ADD
CMP
LOOPZ
JZ
01,2
AX, [01
H4A
PO I NT TO NEXT LDCA T I ON
CHECK DATA PATTERN FOR A FILL PATTERN
0lC7 EA 7COO ---- R
1
HIO
SOOT NOT VAll 0 PR I NT MESSAGE HALT
@800T_LOCN
ATTEMPT BOOTSTRAP FROM FIXED DISK
a I CC BO 44
OICE E6 80
H5:
o I DO
EB 0000 E
0103 F6 06 0088 R 01
----
0108 BB
o lOB 8E 08
DIDO 74 3D
R
MDV
OUT
ASSUME
CALL
TEST
ASSUME
MDV
MDV
JZ
AL,044H
MFG PORT, AL
DS:OATA
DDS
@LASTRATE,DUAL
DS:ABSO
AX,ABSO
OS,AX
H9
CHECK FOR FIXED DISK
o IDF
o lEI
a IE4
01 E6
BO
EB
AB
75
DE
0000 E
08
34
a IE8
OlEA
a IEC
2B CO
28 02
CD 13
OIEE B9 0003
OIFI
a lFI 51
01 F2 BA 0080
01 F5 B8 020 I
OlF8 2B 08
OIFA 8E C3
OIFC 88 7COO R
01 FF 89 000 I
0202 CD 13
0204 59
0205 72 08
0207 81 3E 7DFE R AAS5
0200 74 88
<><><><> <> <> <> <> <> <> <> <>
<><> CHECKPO[NT 44 <><>
FLOPPY/FIXEO DISK CARD
INSTALLED
ESTABL I SH ADDRESS I NG
GO
IF NOl
INITIALIZATION ERROR
MDV
CALL
TEST
JNZ
AL,CMOS DIAG
CMOS READ
AL,HF FAIL
H9
-
GET POST POWER ON STATUS (NMI ENABLED)
FROM 0 I AGNOST I C STATUS BYTE
DID WE HAVE A FIXED DISK FAILURE?
GO IF YES
SUB
AX,AX
DX,DX
13H
CX,3
RESET D! SKETTE
PUSH
MOV
MOV
SUB
MOV
MOV
MOV
INT
pap
JC
CMP
JZ
CX
DX,0080H
AX,020IH
8X,BX
ES ,8X
BX. OFFSET (!OBOOT LOCN
CX, 1
-
SAVE RETRY COUNT
FIXED DISK ZERO
READ IN A SINGLE SECTOR
PUSH
MDV
ex
SUB
1NT
MDV
RETRY COUNT
H6:
13H
TO THE BOOT LDCAT I ON
SECTOR I, TRACK a
FILE I/O CALL
RECOVER RETRY COUNT
CX
H8
WORD PTR @800T LOCN+5100,OAA55H
H4_A
-
;
TEST FOR GENERIC BOOT BLOCK
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
020F
0210
0213
0215
0217
0218
021A
51
8A
2B
CD
59
72
E2
H8:
0080
CO
SUB
13
1NT
PDP
Je
08
05
LOOP
DX,0080H
AX,AX
13H
ex
HIOA
H6
UNABLE TO
021 C 80 45
021 E E6 80
0220 CD
H9:
18
0222 E2 E8
0224 E8 F6
F[XED DISK ZERO
RESET THE F I XED 0 I SK
FILE 110 CALL
RESTORE LOOP COUNT
IF ERROR, TRY AGAIN
DO [T FOR RETRY T[MES
[PL FROM THE DISKETTE OR F I XED 0 I SK
MDV
OUT
AL,045H
MFG_PORT, AL
1NT
18H
;-----
HARD FILE RESET FAILURE
Hl0A:
LOOP
JMP
H8
H9
<><><><><> <> <> <> <> <> <> <>
<><> CHECK PO I NT 45 <><>
GO TO RES I DENT BAS I C
TRY RESET AGAIN
GO TO RES I DENT BAS I C
[F DISKETTE READ OK BUT BOOT RECORD
0226 8E 0000 E
0229 E8 0000 E
022C E8 FE
022E
022E
022E
5-96
TEST6
HIO:
MOV
CALL
HI I:
JMP
BOOT STRAP I
PDST6
ENDP
CODE
ENDS
END
SI,OFFSET E602
E MSG
HII
ENDP
[S NOT STOP SYSTEM ALLOW SOFT RESET
; PR [NT 0 I SKETTE BOOT
; PRINT MESSAGE
IBM Per~onQl Computer MACRO A~~embler
OSKETTE -- 06/10/85
DISKETTE BIOS
I
2
3
4
5
6
7
8
9
10
"
12
13
14
15
0000
Ver~ion
2.00
I-I
06-] 0-85
PAGE 118,121
TITLE DSKETTE -- 06/10/85
DISKETTE BIOS
.266C
.LlST
CODE
SEGMENT BYTE PUBL I C
PUBLIC
PUBL I C
PUBL I C
PUBLIC
OISK INT 1
SEEKDSKETTE SETUP
DISKETTE_IO_'
EXTRN
EXTRN
EXTRN
EXTRN
CMOS READ:NEAR
DDS:NEAR
DISK BASE:NEAR
WAITF:NEAR
READ CMOS LOCATION ROUTINE
LOAD (OS) WITH DATA SEGMENT SELECTOR
DISKETTE PARAMETER TABLE LOCATION
FIXED WAIT ROUTINE - (CXI·'5.086 US
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
I NT 13H ----- ------------ -- - -- ------------------- ------------------------DISKETTE I/O
THIS INTERFACE PROVIDES ACCESS TO THE 5 1/4" DISKETTE DRIVES
320/360K DiSKETTE DRIVES AND 1.2M DISKETTE DRIVES SUPPORTED
INPUT
(AH)= OOH
RESET DISKETTE SYSTEM
HARD RESET TO NEC, PREPARE COMMAND, RECAL I BRATE REQU I RED
ON ALL DR I VES
(AH)= 01H
READ THE STATUS OF THE SYSTEM INTO
ODSKETTE_STATUS FROM LAST OPERATION
IAH)
IS USED
REGISTERS FOR READ/WRITE/VERIFY/FDRMAT
(DL) - DRIVE NUMBER 10-1 ALLOWED, VALUE CHECKED)
(DH) - HEAD NUMBER (0-1 ALLOWED, NOT VALUE CHECKED)
(CHI - TRACK NUMBER (NOT VALUE CHECKED)
MED 1 A
DR I VE
TRACK NUMBER
320/360
320/360
0-39
3201360
1.2101
0-39
1.2M
1.2M
0-79
720K
720K
0-79
(CLI - SECTOR NUMBER INOT VALUE CHECKED, NOT USED FOR FORMATI
MED I A
DR I VE
SECTOR NUMBER
320/360
320/360
1 -6/9
320/360
t .2M
1-6/9
1.2M
1.2M
1-15
720K
720K
1-9
(ALI - NUMBER OF SECTORS (NOT VALUE CHECKED)
MED I A
DR I VE
MAX NUMBER OF SECTORS
320/360
320 f 360
8/9
320/360
1.2101
8/9
1~2M
1.2101
15
720K
720K
9
(ES:BXI
-
ADDRESS OF BUFFER
( REQUIRED FOR VERIFY)
5.
(AH)= 02H
READ THE DESIRED SECTORS
55
56
57
(AH)= 03H
WRITE THE DESIRED SECTORS FROM MEMORY
58
(AH) = 04H
59
60
(AH)= 05H
61
62
63
6.
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
BO
BI
B2
B3
8.
B5
B6
B7
BB
B9
90
91
92
93
9'
95
96
97
9B
99
100
101
102
103
104
105
106
107
INTO MEMORY
VER I FY THE OES I RED SECTORS
FORMAT THE DESIRED TRACK
FOR THE FORMAT OPERATION, THE BUFFER POINTER IES,BX) MUST
POINT TO THE COLLECTION OF DESIRED ADDRESS FIELDS FOR THE
TRACK.
EACH F 1ELD I S COMPOSED OF 4 BYTES, I C, H, R, N), WHERE
C = TRACK NUMBER" H=HEAD NUMBER, R = SECTOR NUMBER, N= NUMBER
OF BYTES PER SECTOR 100=128, 01=256, 02=512, 03=1024,1
THERE MUST BE ONE ENTRY FOR EVERY SECTOR ON THE TRACK.
TH I 5 I NFORMA TI ON I S USED TO F I NO THE REQUESTED SECTOR OUR I NG
READ/WRITE ACCESS.
PRIOR TO FORMATTING A DISKETTE, IF THERE EXISTS MORE THAN
ONE SUPPORTED MEO I A FORMAT TYPE WITH IN' THE DR I VE I N QUEST I ON.
THEN "SET DASD TYPE" II NT 13H, AH = 1 7H I MUST BE CALLED TO
SET THE DISKETTE TYPE THAT IS TO BE FORMATTED.
IF "SET DASD
TYPE" IS NOT CALLED, THE FORMAT ROUTINE WILL ASSUME THE
MEDIA FORMAT TO BE THE MAXIMUM CAPACITY OF THE DRIVE.
IN ORDER TO FORMAT 320/360K MEDIA IN EITHER A 320/360K OR
1.2M DISKETTE DRIVE THE GAP LENGTH FOR FORMAT PARAMETER
OF DISK BASE MUST BE CHANGE TO 050H.
ALSO THE EDT
PARAMETER (LAST SECTOR ON TRACK) MUST BE SET TO THE
DESIRED NUMBER OF SECTORS/TRACK - 6 FOR 320K, 9 FOR 360K.
DISK BASE IS POINTED TO BY DISK POINTER LOCATED AT
ABSOLUTE ADDRESS 0:76.
WHEN 320/360K FORMAT OPERATIONS ARE COMPLETE, THE PARAMETERS
SHOULD BE RESTORED TO THEIR RESPECTIVE INITIAL VALUES.
(AH 1= 06H
REG I STERS
INPUT
(DL I OUTPUT
IES:OI)
(CHI (CLl I DH I (DLI IBH) IBL~
-
READ DR I VE PARAMETERS
DR I VE NUMBER
(0 - I
ALLOWED,
V ALUE CHECKED I
POINTS TO DISK BASE
LOW ORDER 8 OF 10 BITS MAXIMUM NUMBER OF TRACKS
BITS 7 & 6 - HIGH ORDER TWO BITS OF MAXIMUM TRACKS
BITS 5 THRU 0 - MAX I MUM SECTORS PER TRACK
MAX I MUM HEAD NUMBER
NUMBER OF DISKETTE DRIVES INSTALLED
0
BITS 7 THRU 4 - 0
BITS 3 THRU 0 - VALID DRIVE TYPE VALUE IN CMOS
(AX) - 0
UNDER THE FOLLOWING CIRCUMSTANCES:
11) THE DRIVE NUMBER IS INVALID,
(2) THE DR I VE TYPE I S UNKNOWN AND CMOS I S NOT PRESENT,
131 THE DR I VE TYPE I S UNKNOWN AND CMOS I S BAD,
141 OR THE DRIVE TYPE IS UNKNOWN AND THE CMOS DRIVE TYPE IS
THEN ES,AX,BX,CX,DH,OI=O ; DL=NUMBER OF DRIVES.
IF NO DRIVES ARE PRESENT THEN: ES,AX,BX,CX,OX.DI=O.
@DSKETTE_STATUS = a AND CY I S RESET.
DISKETTE
INVALID
5-97
IBM Personal Computer MACRO Assembler
DSKETTE -- 06/10/85
DISKETTE BIOS
108
109
110
III
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
13'
140
141
142
143
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
I
~2
06-! 0-85
PAGE
; ---;
;
;
I AH) = 15H
READ DASD TYPE
REGISTERS
(AH) - ON RETURN I F CARRY FLAG NOT SET, DTHERW I SE ERROR
00 - DRIVE NOT PRESENT
01 - DISKETTE, NO CHANGE LINE AVAILABLE
02 - DISKETTE, CHANGE LINE AVAILABLE
03 - FIXED DISK
IOL) - DRIVE NUMBER 10-1 ALLOWED, VALUE CHECKED)
;
;
;
;
;
; -------------------- - ---- -- --- ---- - - -- -- -- ------ - - - - ---- --- --------------- ---;
;
;
;
;
IAHI= 16H
DISK CHANGE LINE STATUS
REGISTERS
IAH)=OO - DISK CHANGE LINE NOT ACTIVE
06 - DISK CHANGE LINE ACTIVE & CARRY BIT ON
IDL) - DRIVE NUMBER 10-1 ALLOWED, VALUE CHECKED)
IAHI = 17H
SET DASD TYPE FOR FORMAT
REGI STERS
(ALl 00 - NOT USED
01 - DISKETTE 320/360K IN 360K DRIVE
02 - DISKETTE 360K IN 1.2M DRIVE
03 - DISKETTE 1.2M IN 1.2M DRIVE
04 - DISKETTE 720K IN 720K DRIVE
(DU - DRIVE NUMBER (0-1 ALLOWED, VALUE CHECKED;
DO NOT USE WHEN D[SKETTE ATTACH CARD USED)
;
----- --- -- - - -------- ----- ----- -- - - - - -- -- -------- ---- ---- ---
;
0 I SK CHANGE STATUS [S ONLY CHECKED WHEN A I . 2M BYTE 0 [SKETTE
DRIVE [S SPEC[FIED.
[F THE DISK CHANGE LINE IS FOUND TO BE
ACT J VE THE FOLLOW J NG ACT IONS TAKE PLACE:
ATTEMPT TO RESET DISK CHANGE LINE TO [NACTIVE STATE.
[F ATTEMPT SUCCEEDS SET DASD TYPE FOR FORMAT AND RETURN DISK
CHANGE ERROR CODE
[F ATTEMPT FAILS RETURN TIMEOUT ERROR CODE AND SET DASD TYPE
TO A PREDETERMINED STATE INDICATING MEDIA TYPE UNKNOWN.
I F THE 0 I SK CHANGE LINE I N I NACT I VE PERFORM SET DASD TYPE FOR FORMAT.
;
:
;
;
144
145
146
Version 2.00
;
;
; DATA VARIABLE -- @DISK POINTER
;
DOUBLE WORD PO I NTER TO THE CURRENT SET OF 0 I SKETTE PARAMETERS
;----- ------- - -------- ------ -------- -- -- -----------------; OUTPUT FOR ALL FUNCT IONS
AH
STATUS OF OPERATION
;
STATUS BITS ARE DEFINED IN THE EQUATES FOR @DSKETTE STATUS
;
VAR[ABLE IN THE DATA SEGMENT OF TH[S MODULE
;
CY
0
SUCCESSFUL OPERATION (AH=O ON RETURN, EXCEPT FOR READ DASD
;
TYPE AH=11511.
;
CY = 1 FAILED OPERATION IAH HAS ERROR REASON)
;
FOR READ/WR[TE/VERIFY
;
OS, BX, OX, CX PRESERVED
;
NOTE: IF AN ERROR IS REPORTED BY THE DISKETTE CODE, THE APPROPR[ATE
;
ACT I ON I S TO RESET THE 0 I SKETTE. THEN RETRY THE OPERAT I ON.
ON READ ACCESSES, NO MOTOR START DELAY [S TAKEN, SO THAT
;
THREE RETRIES ARE REQU[RED ON READS TO ENSURE THAT THE
;
PROBLEM IS NOT DUE TO MOTOR START-UP.
=
=
; DISKETTE STATE MACHINE .LI ST
ABSOLUTE ADDRESS 40:90
(DRIVE M
91
&
(DR[VE B)
169
ITO
ITI
1T2
1T3
1T4
1T5
1T6
I
I
I
RESERVED
ITT
1T8
I T9
000 :
001:
010:
011 :
100 :
101 :
110:
III:
180
181
182
183
184
185
186
187
UNESTABLISHED
UNESTABLISHED
UNESTABLISHED
ESTABLISHED
ESTABLISHED
ESTABLISHED
---> MEDIA/DRIVE ESTABLISHED
188
189
------->
190
191
192
193
194
195
196
19'
198
199
I
I
PRESENT STATE
360K IN 360K DRIVE
360K IN 1.2M DRIVE
1.2M IN 1.2M DRIVE
360K IN 360K DRIVE
360K IN 1.2M DRIVE
1.2M IN 1.2M DRIVE
RESERVED
NONE OF THE ABOVE
DOUBLE STEPPING REQUIRED
DR[VE)
(360K
IN
1.2M
--> DATA TRANSFER RATE FOR THIS DRIVE:
00: 500 KBS
01: 300 KBS
10: 250 KBS
1 1: RESERVED
LIST
200
20 I
STATE OPERATION STARTED -
ABSOLUTE ADDRESS 40 92
(DR[VE A)
&
93
IDRIVE BI
PRESENT CYLINDER NUMBER
ABSOLUTE ADDRESS 40 94
(DRIVE A)
&
95
IDRIVE BI
202
203
204
5-98
DISKETTE
IBM Personal Computer MACRO Assembler
OSKETTE -- 06/10/85
DISKETTE 8105
205
20.
201
208
209
210
211
212
213
214
215
21.
1-3
Version 2.00
06-10-85
PAGE
0000
0000
0001
0002
0003
0004
0005
0006
ASSUME
.LlST
DISKETTE 10 1
5TlPUSH
PUSH
PUSH
PUSH
PUSH
FB
55
51
52
53
51
88 EC
CS: CODE ,OS: DATA, ES :DATA
PROC
FAR
BP
DI
DX
BX
ex
MOV
BP,SP
PUSH
PUSH
CALL
DS
CMP
~~~~~~g_TAE-FNC_TA8) 12
217
218
21.
220
221
222
223
224
225
22.
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
241
248
249
250
251
252
253
254
255
25.
257
258
25.
2.0
0008
0009
OOOA
0000
0010
1E
56
E8 0000 E
80 FC 18
12 02
0012
0014
0014
0011
0019
001C
ODIE
0021
0023
0025
0025
0021
0029
002B
002E
0030
0032
0034
0036
0038
003C
B4 14
80
16
80
14
80
16
B4
FC 01
DC
FC 08
01
FA 01
02
14
8A
32
00
B8
03
8A
32
CC
ED
El
004E R
09
E6
F6
Fa
FA
26 0041
06 0041
88
8B
8A
C6
.JB
MOV
OK FUNC:
CMP
.JBE
CMP
.JZ
CMP
.JBE
MOV
MOV
XOR
SHL
00
MOV
ADO
MOV
XOR
MOV
MOV
MOV
MOV
51
DOS
I NTERRUPTS BACK ON
USER REG I STER
USER REG I STER
HEAD II, DRIVE' OR USER REGISTER
BUFFER OFFSET PARAMETER OR REGISTER
TRACK '-SECTOR' OR USER REGISTER
BP
=> PARAMETER LIST DEP. ON AH
[8P]
= SECTOR'
[BP"'11 = TRACK'
[BP+2j = BUFFER OFFSET
FOR RETURN OF DR I VE PARAMETERS:
CLI[BP] :: BITS 7&6 HI BITS OF MAX CYL
BITS 0-5 MAX SECTORS/TRACK
CH/[BP+I] = LOW 8 BITS OF MAX CYL.
BL/[8P+2] = BITS 7-4 = 0
BITS 3-0 :: VALID CMOS TYPE
BHI tBP+3] = 0
DLI[BP"'4] = , DRIVES INSTALLED
DHI (BP+5] = MAX HEAD ,
Dl/[BP+6] = OFFSET TO DISK BASE
BUFFER SEGMENT PARM OR USER REG I STER
USER REGISTERS
SEGMENT OF 81 OS OAT A AREA TO OS
CHECK FOR > LARGEST FUNCT I ON
FUNCT ION OK
AH,14H
REPLACE WITH KNOWN
AH,I
OK DRV
AH-;-8
OK ORV
DL-;-I
OK DRV
AH-;-14H
RESET OR STATUS ?
IF RESET OR STATUS DR I VE ALWAYS OK
READ DRIVE PARMS ?
IF SO DRIVE CHECKED LATER
DR IVES 0 AND I OK
IF 0 OR I THEN JUMP
REPLACE WITH KNOWN I NVAL I D FUNCT I ON
CL,AH
CH,CH
CL,I
~~:g~FSET FNC_TAB
CL :: FUNCT I ON
CX = FUNCT I ON
FUNCTION TIMES 2
LOAD START OF FUNCTION TABLE
ADO OFFSET INTO TABLE => ROUTINE
AX = HEAD "." OF SECTORS OR CASD TYPE
OX = DRIVE'
5 I = HEAD " , ' OF SECTORS OR OASD TYPE
01 = DRIVE"
LOAD STATUS TO AH FOR STATUS FUNCTION
INITIALIZE FOR ALL OTHERS
AH,OH
DH,DH
51 ,AX
DI,DX
AH,oOSKETTE STATUS
*OSKETTE_STATUS, 0
INVALID FUNCTION
THROUGHOUT THE DISKETTE BIOS, THE FOLLOWING INFORMATION IS CONTAINED IN
THE FOLLOWING MEMORY LOCATIONS AND REGISTERS. NOT ALL DISKETTE BIOS
FUNCTI ONS REQU I RE ALL OF THESE PARAMETERS.
2.,
2.2
DI
2.3
51-HI
51-LOW
2.4
ES
2.5
[BP]
[BP+I]
[BP+2]
2 ••
2.7
2.8
2.'
270
I DRIVE"
: HEAD"
I # OF SECTORS OR DASO TYPE FOR FORMAT
I BUFFER SEGMENT
: SECTOR'
: TRACK"
: BUFFER OFFSET
ACROSS CALLS TO SUBROUTINES THE CARRY FLAG ICY= I), WHERE INDICATED IN
SUBROUT I NE PROLOGUES, REPRESENTS AN EXCEPT I ON RETURN (NORMALLY AN ERROR
CONDITION). IN MOST CASES, WHEN CY
1, ttDSKETTE STATUS CONTAINS THE
SPECIFIC ERROR CODE.
; (AHI = ODSKETTE STATUS
, CALL THE REQUESTED FUNCT I ON
CALL
WORD PTR CS; [BX]
, RESTORE ALL REG 1STERS
POP
51
=
271
272
273
274
275
276
211
218
219
280
281
282
283
»> ENTRY PO I NT FOR ORG OEC59H
0041
0044
0045
0046
0041
0048
0049
004A
0048
2E: FF 11
5E
IF
59
58
SA
SF
50
CA 0002
284
285
286
281
288
289
290
291
292
293
294
295
296
291
298
299
300
301
302
303
304
305
306
301
308
309
004E 001E
0050 00E8
0052 00F4
0054 0 I 00
0056 010C
0058 01 18
005A 016A
005C 016A
OOSE 0114
0060 016A
0062 016A
0064 016A
0066 016A
0068 016A
006A 016A
006C 016A
006E 016A
0010 016A
0072 016A
0074 016A
0076 016A
0078 021A
007A 023C
007C 0261
= 001E
310
311
007E
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
POP
POP
POP
POP
POP
POP
RET
OS
ex
BX
DX
DI
BP
2
; THROW AWAY SAVED FLAGS
,--- ------------- - - ------------ - -- - ---- - ----------------- - - - - - - - ---- ------ - --=
FNC TA8 OW
OW
OW
OW
DW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
DISK RESET
DISK-STATUS
DISK-READ
DISK-WRITE
DISK-VERF
DISK-FORMAT
FNC ERR
FNC-ERR
0 I SK PARMS
FNC ERR
FNC-ERR
FNC-ERR
FNC-ERR
FNC-ERR
FNC-ERR
FNC-ERR
FNC-ERR
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
AH
OW
OW
OW
OW
OW
FNC_TAE EQU
FNC-ERR
FNC-ERR
DISK TYPE
DISK-CHANGE
FORMAT SET
S
-
AH ::
AH =
AH =
AH ::
AH =
END
DISKETTE_IO_'
ENOP
g:
~~g=~~~
:~
00;
01,
021
:: 03;
041
= 05;
:: 06;
:: 01;
081
= 09;
:: OA;
:: 08;
OC;
00;
:: OE;
OFI
101
=
=
=
=
=
=
=
=
: :~;
RESET
STATUS
READ
WRITE
VERIFY
FORMAT
INVALID
INVALID
READ DR I VE PARAMETERS
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
:~~:~:g
131 INVALID
14; INVALID
15; READ DAse TYPE
161 CHANGE STATUS
1 7, SET DASD TYPE
DISKETTE
5-99
IBM P.rsonat Comput.r MACRO Assembler
OSKETTE -- 06/10/85
DISKETTE BIOS
312
313
314
315
310
317
318
319
320
321
322
323
324
325
320
321
328
32.
330
331
332
333
334
335
330
331
338
33.
340
341
342
343
34'
345
340
341
348
...
350
351
352
353
3.'
355
350
3.,
358
35.
360
301
302
303
304
305
300
301
308
30'
310
311
312
313
314
315
310
311
318
31.
.8."0
'"
•••
'"
"0
1-----------------------------------------------------------------------------I DISK_RESET;
RESET THE DISKETTE SYSTEM.
; ON EXITI
O~~H
OOSA
OOSC
OOSO
0092
0094
0096
0091
0098
0098
~090
OOAO
OOAO
OOA I
00A4
00A5
OOAl
OOAA
OOA$
OOAE
OOAF
OOBI
aOB5
00B7
0089
008C
SA
FA
AO
24
CO
OC
EE
C6
EB
OC
EE
FB
E8
12
B9
51
88
50
84
E8
sa
Ea
59
72
3A
75
FE
80
76
03F2
003F R
3F
CO 04
01 SK RESET
MOV
eLI
MOV
ANO
ROL
OR
08
OUT
MOV
JMP
06 003E R 00
00
04
OR
OUT
OOEO R
08
01BO R
08A4 R
CALL
Je
MOV
NXT DRV:
PUSH
MOV
PUSH
MOV
CALL
POP
CALL
POP
JC
30
OE 0042 R
2A
CI
F9 C3
E2
eMP
JNZ
INC
eMP
JBE
;-----
OOI3E
OOCI
00C2
00C4
00C7
00C9
ooee
OOCF
000 I
0004
00Q7
0008
0008
OODB
0000
OODF
88 0008
50
84 03
~8 07BD
2A 02
Ea 06Ce
E8 078D
B2 01
Ea 06CC
E8 0180
58
ADAPTER CONTROL PORT
NO INTERRUPTS
GET DIGITAL OUTPUT REGISTER REFLECTION
KEEP SELECTED AND MOTOR ON 81 TS
MOTOR VALUE TO HIGH NIBBLE
DR I VE SELECT TO LOW NIBBLE
TURN ON I NTERRUPT ENABLE
RESET THE AOA~TER
SET RECAI-IBRATE REQU I RED ON ALL DR I VES
WAIT FOR 1/0
TURN OFF RESET BI T
RESET' THE ADAPTER
ENABLE THE INTERRUPTS
WA I T FOR THE INTERRUPT
I F ERROR. RETURN IT
CL.:
EXPECTED .NEC_STATUS
~~:~~~T~~T~~ATUS
~L,4
AL,OOOOIOOOB
DX,AL
.SEEK STATUS,O
1+2 AL, 00000 I OOB
DX,AL
WAIT INT
OR ERR
CX-;-IIOOOOOOB
=
ex
SAVE FOR CALL
~OAD NEC_OUTPUT ERROR ADDRESS
~~, OFFSET DR_PDP_ERR
SENSE INTERRUPT STATUS COMMAND
AH,08H
NEC OUTPUT
AX RESULTS
THROW AWAY ERROR RETURN
READ I N THE RESULTS
RESTORE AFTER CALL
ERROR RETURN
TEST FOR OR I VE READY TRANS I T I ON
EVERYTH 1NG OK
NEXT EXPECTED ONEC STATUS
ALL POSS I BLE DR I VES CLEARED
FALL THRU IF 110001 OOB OR >
ex
DR ERR
CL-;-IlINEC STATUS
DR ERR eLCL,IIOOOOIIB
NXT_ORV
SEND SPECIFY COMMAND TO NEC
R
MOV
PUSH
MOV
CALL
R
SUB
R
R
CALL
CALL
MOV
CALL
CALL
POP
R
R
AX.OFFSET RES8AC
AX
AH, 03H
NEC OUTPUT
DL.DL
GET PARM
NEC:-OUTPUT
LOAD ERROR ADDRESS
; PUSH NEC OUT ERROR RETURN
I
~~~~~~Y TE~M~~~~AND
NEC-OUTPUT
AX -
FIRST SPECIF:Y 8YTE
GET PARA~ETER TO AH
OUTPUT THE COMMAND
SECOND SPEC I FY ,8YTE
GET PARAMETER TO AH
OUTPUT THE COMMAND
POP ERROR RETURN
SETUP END
BX.SIAL.8L
VARIOUS CLEANUPS
GET SAVED AL TO BL
PUT BACK FOR RETURN
g~;.TpARM
RES8AC:
Ea 0620 R
88 DE
8A C3
C3
OOEO
OOEO 59
OOEI
OOEI 150 OE 0041 R 20
00E6 E8 Fa
OOEa
CALL
MOV
MOV
RET
DR POP ERRI
- POP
OR
JMP
01 SK_RESET
ex
CLEAR STACK
ODSKETTE STATUS,BAD NEC
SHORT RESBAC
ENDP
SET ERROR CODE
RETURN FROM RESET
,- ------------------------------- ----- --------------- ---------------- - - --- ---'-
; DISK_STATUS:
ENT~YI
: ON
OOEa
00E8 1515 26 0041 R
OOEC E8 0620 R
OOEF 88 DE
~~~~ ~~
C3
00F4
OISKETTE STATUS.
AH : STATUS OF PREVIOUS OPERATION
; ON EXITa
AH. 1lI0SKETTE STATUS. CY REFLECT STATUS OF PREVIOUS OPERATION.
01 SK STATUS
PROC
NEAR
IlIQSKETTE STATUS.AH
SETUP_END
BX,SI
AL.BL
,-------- -------------------=-------- ------- --------- ------ ----------- -- -------
MOV
CALL
MOV
MOV
RET
DISK_STATUS
;
; DISK_READI
;
; ON ENTRY:
I
DI
51-HI
S I-LOW
ES
[BP]
[ BP t l ]
(~P+2~
ON EXIT:
00F4
00F4
00F9
OOFC
OOFF
0.00
DRIV.E •
HEAD.
• OF SECTORS
I BUFFER SEGMENT
I SECTOR.
TRACK #
BUFFER OFFSET
ltOSKETTE STATUS, CY REFLECT STATUS OF OPERATION
b;~~-~~~~-------;~~~----~~~~-------------------------- ------------------------80 26 003F R 7F
Ba E646
E8 03SC R
C3
-
~~~
:~~~~~4~~ AT!JS, a 1 1 1 I 11 18
CALL
RET
RD_WR_VF·
01 SK READ
ENDP
; OISK WRITE:
;
; ON ENTRY:
DISKETTE WRITE.
; !~O! C~~~ ~O:~~~D ~P~:~ T 6g~MANO
; COMMON READ/yt'RITE/VERIFY
,---=--------------------------------------------------------------------------
412
-
01
:
51-HI
I
51-LOW :
:
:
BP+11 :
8P+2
:
EI~P]
ON EXIT:
0100
0100 Ba C54A
5-100
: ~~~ I ~~~K C[~~N~~~UP _ENO
; GEt SAVED AL TO 8L
; PUT ~ACK FOR RETURN
ENDP
---------------------------- ---- - -- -------- - - - -------- - - - - - - - - - - - - - - - - - -- ---DISKETTE READ.
411
41.
410
417
418
41'
420
421
422
423
424
425
----=---:----------- --- -------- -- -- ------------------ ---- ---
PROC
NEAR
DX,.03F2H
SJI
081C R
44
OOCO
•• 5
.,..,3
ODSKETTE STATUS, CY REFLECT STATUS OF OPERATION
1- -: - -- .. ------------ ..
007E
007E
0081
0082
00S5
•• 2
3.7
3.8
3"
400
401
402
403
'04
405
400
401
408
40.
410
06-10-85
PAGE
~80
381
382
38.
.84
.85
.80
.81
.88
1-4
Version 2.00
DRIVE #
HEAD #
# OF SECTORS
BUFFER SEGMENT
SECTOR #
TRACK #
BUFFER OFFSET
ODSKETTE STATUS. CY REFLECT STATUS OF OPERATION
b~~;-;~~~~------;~~~----~~~~- --------------------------------------------------
DISKETTE
-
MOV
AX, OC54AH
I AX
=
NEC COMMANO, DMA COMMAND
IBM Personal Computer MACRO Assembler
DSKETTE -- 06/10/85
DISKETTE BIOS
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
0103 80 OE 003F R 80
0108 E8 035C R
a I 08 C3
01 OC
OR
CALL
450
451
452
453
454
455
456
457
45'
459
460
461
462
0118
463
0118 E8 02C8 R
464
011B E8 03CE R
465
aIlE 80 OE 003F R 80
466
0123 E8 0416 R
467
0126 7237
468
0 I 28 E8 0451 R
469
01 2B BO 4A
470
0120 E8 0471 R
471
0130 72 2D
472
0132 B4 40
473
0134 E8 04C7 R
474
0137 B8 015F R
475
013A 50
476
013B B2 03
477
01 3D E8 06CC R
478
0140 E8 07BD R
479
0143 B2 04
480
0145 E8 06CC R
481
0146 E8 07BD R
482
014B B2 07
483
014D E8 06CC R
484
0150 E8 07BD R
485
0153 B2 08
486
0155 E8 06CC R
487
0158 E8 07BD R
488
015B 58
489
015C E8 0530 R
490
015F
491
01 5F E8 02EE R
492
0162 E8 0620 R
493
0165 8B DE
494
0167 8A C3
495
0169 C3
496
0 I 6A
497
49'
499
500
501
502
503
016A
504
016A 8B C6
505
016C B4 01
506
016E 88 26 0041 R
5070172F9
508
0 I 73 C3
5090174
510
511
512
513
514
515
516
517
510
519
520
521
522
523
524
525
526
527
520
529
530
531
532
a 174
533
0 I 74 81 FF 0080
534
0 I 78 72 06
535
530
537
538
017A 8B C6
539
017C B4 01
~~~~-~~~~
-
01
SI-H[
S [-LOW
ES
[BP]
[BP+I]
[BP+2]
: DRIVE #
: HEAD #
: # OF SECTOR S
: BUFFER SEGMENT
: SECTOR #
: TRACK #
: BUFFER OFFSET
IttDSKETTE_STATUS, CY REFLECT STATUS OF OPERATION
ON EXIT:
449
IttMOTOR STATUS,IOOOOOOOB ; INDICATE WRITE OPERAT[ON
RD WR \IF
; COMMON READ/WR[TE/VERIFY
RET
DISK_WRITE
ENDP
; - - - - -- - - - -- - ------------------DISKETTE VER [FY •
DISK_VERF:
ON ENTRY:
0 I OC
OIOC 80 26 003F R 7F
a I I 1 88 E642
0114 E8 035C R
0117 C3
0118
1-5
06-10-85
Version 2.00
PROC
AND
NEAR
: !~D!C~~~ ~O~~~~D~P~~~T~g~MANO
RD_WR_VF
; COMMON READ/WRITE/VERIFY
RET
o [SK_ VERF
ENDP
; ---- --- - - - - -- -- ---------------------- -- ------ -- -- -- - -----D[SK_FORMAT:
DISKETTE FORMAT.
"oV
=~~6~~4~~ATUS,011111118
CALL
,
;
ON ENTRY:
01
S I-H [
S I -LOW
ES
[BP]
[BP+lj
[BP+2]
ON EXIT:
@DSKETTE_STATUS,
~ ~ ~~
DRIVE #
HEAD #
# OF SECTORS
BUFFER SEGMENT
SECTOR #
TRACK #
BUFFER OFFSET
CY REFLECT STATUS OF OPERATiON
- ~~~~~ ~ - - -- - ~~~~ - - - - ~~~~ - - - - - - -- - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - --
-
CALL
CALL
OR
CALL
.JC
CALL
MOV
CALL
.JC
MOV
CALL
MOV
PUSH
MOV
CALL
CALL
MOV
CALL
CALL
MOV
CALL
CALL
MOV
CALL
CALL
POP
CALL
XLAT NEW
FMT TNIT
@MOTOR STATUS,IOOOOOOOB
MED CHANGE
FM BON
SEND RATE
AL. 04AH
DMA SETUP
FM BON
AH-;-04DH
NEC IN[T
AX. OFFSET FM DON
AX
DL,3
GET PARM
NEC-OUTPUT
DL,4
GET PARM
NEC-OUTPUT
DL,"1
GET PARM
NEC-OUTPUT
DL,"8
GET PARM
NEC-OUTPUT
AX NEC_TERM
TRANSLATE STATE TO PRESENT ARCH.
ESTABLISH STATE IF UNESTABLISHED
INDICATE WRITE OPERATION
CHECK MEO [A CHANGE AND RESET [F SO
MED I A CHANGED, SK [P
SEND DATA RATE TO CONTROLLER
W[LL WR I TE TO THE 0 I SKETTE
SET UP THE DMA
RETURN WITH ERROR
ESTABLISH THE FORMAT COMMAND
INITIALIZE THE NEC
LOAD ERROR ADDRESS
PUSH NEC OUT ERROR RETURN
BYTES/SECTOR VALUE TO NEC
CALL
CALL
XLAT OLD
SETUP_END
BX,SI
AL,BL
TRANSLATE STATE TO COMPATIBLE MODE
VAR 10US CLEANUPS
GET SAVED AL TO BL
PUT BACK FOR RETURN
MOV
MOV
SECTORS/TRACK VALUE TO NEC
GAP LENGTH VALUE TO NEC
F [LLER BYTE TO NEC
THROW AWAY ERROR
TERM[NATE, RECEIVE STATUS, ETC.
RET
DISK FORMAT
ENDP
;
;
STATUS.
:
-~~~~~~~- ~-----~~~~~~;-~~~~~~;~ -~~~~~~~~;-;~-~ ~~ ~~~; -;~~ ~~~-~~~-~~;-~;~MAND
ON EX[T:
@DSKETTE_STATUS,
IN
CY REFLECT STATUS OF OPERATION
~~~-~~~-~~~~--- - ~~~~-------- -------- ----- I ~~~~~;-;~~~~~;~-~~~~~ST
-
MOV
MOV
MOV
STC
AX. S I
AH, BAD CMD
@DSKETTE_STATUS,AH
RESTORE AL
SET BAD COMMAND ERROR
STORE IN DATA AREA
SET CARRY INDICATING ERROR
RET
FNC _ERR ENDP
01 SK_PARMS:
READ OR I VE PARAMETERS.
ON ENTRY:
0 [ : DRIVE #
ON EXIT:
CLI [BP]
=
CHI [BP+ 11
BLI [BP+2]
BH/
DLI
DH/
01/
ES
[BP+3]
[BP+4]
[8P+5}
[BP+6]
AX
NOTE
6 ~ ~~
~ ~~~~
-
------
eMP
.JB
~~;~
B[TS 7 & 6 H[GH 2 BITS OF MAX CYLINDER
B[TS 0-5 MAX SECTORS/TRACK
= LOW 8 B[TS OF MAX CYLINDER
=B[TS7--4=0
BITS 3-0 = VALID CMOS DRIVE TYPE
~
0
'" # DRIVES INSTALLED
IVALUE CHECKED)
MAX HEAD #
= OFFSET OF 0 I SK BASE
= SEGMENT OF 0 I SI< BASE
'" 0
-
=
THE ABOVE INFORMATION IS STORED IN THE USERS STACK AT
THE LOCATIONS WHERE THE MAIN ROUT[NE WILL POP THEM
I NTO THE APPROPR I ATE REG I STERS BEFORE RETURN I NG TO THE
CALLER.
----
~~~~
DI,80H
DISK_P2
---------------------------------------;
;
CHECK FOR FIXED MEDIA TYPE REQUEST
CONT[NUE [F NOT REQUEST FALL THROUGH
F [XED 0 I SK REQUEST FALL THROUGH ERROR
MOV
MOV
AX, S I
AH,BAD_CMD
;
;
RESTORE AL WITH CALLERS VALUE
SET BAD COMMAND ERROR [N I AH)
DISKETTE
5-101
IBM Personal Computer MACRO Assembler
OSKETTE -- Ob/l0/85
DISKETTE BIOS
5.0
541
5.2
5.3
5 ••
5.5
5.6
547
5 ••
5.9
550
551
552
553
55.
555
556
557
55.
559
560
561
562
563
56.
565
566
567
56.
569
570
571
572
573
57.
575
576
577
57.
579
580
581
582
583
5 ••
5.5
586
017E F9
C3
01B2
01B5
01 B7
01B9
01BB
o 1BO
88 46 02
FE C8
00 EO
8A 08
32 FF
2E: 8B SF 0214 R
CALL
MOV
MOV
AND
MOV
eMP
JZ
XLAT NEW
WORD-PTR [8P+2] ,0
AX,G!lEQUIP FLAG
AL,I10000018
DL,2
AL,Ol0000018
01 SK_P3
TRANSLATE STATE TO PRESENT ARCH.
DRIVE TYPE
0
LOAD EQU I PMENT FLAG FOR # 0 I SKETTES
KEEP 0 I SKETTE DR I VE BITS
DISKETTE DRIVES
2
2 DRIVES INSTALLED?
IF YES .JUMP
DEC
CMP
JNZ
DL
AL, 0000000 18
DISK_P8
DISKETTE DRIVES = 1
1 DRIVE INSTALLED?
IF NO .JUMP
MDV
CMP
JA
MOV
CALL
Je
DR
JZ
CMP
.)A
[8P+4j ,DL
01,1
DISK P9
BYTE-PTR{BP+5],1
CMOS TYPE
DISK-P4
AL,AL
DISK P4
AL, (DR PTE-DR
DISK_P4
-
STORE NUMBER OF DR I VES
CHECK FOR VALID DRIVE
DRIVE INVALID
MAX I MUM HEAD NUMBER
1
RETURN DR I VE TYPE IN AL
IF CMOS SAD CHECKSUM ESTABLISHED
TEST FOR NO DR I VE TYPE
.JUMP IF SO
> MAXIMUM
IF SO .JUMP
MDV
DEC
SHL
MOV
XDR
MOV
(BP+2] ,AL
AL
AL, I
BL.AL
BH,BH
;
cX,CS;WORD PTR DR_PT{8X];
STORE VALID CMOS DRIVE TYPE
MAKE 0 ORIGIN
ACCOUNT FOR FIELD WIDTH
FINISH MAKING INDEX POINTER
CLEAR HIGH ORDER INDEX
GET MAX TRACK AND SECTOR
MDV
TEST
JNZ
eMP
')Z
JMP
AL,«tDSK STATE[DI]
8YTE-PTR (BP+2],O
DISK P9
SHORT 0 I SK_P6
LOAD STATE FOR THIS DRIVE
CHECK FOR ESTABLISHED STATE
GO TO CMOS FOR DR I VE CHECK
CHECK FOR CMOS 8AD/INVALID
CMOS BAO/[NVALID AND UNESTABLISHED
CMOS GOOD AND UNEST ABL I SHED; USE CMOS
=
=
DISK_P3:
88 56 04
83 FF 01
TT 66
C6 46 05 01
E8 06B3 R
72 I .
OA CO
14
3C 03
,.
TT
10
=
pn /2
01 SK_P4:
8A
A8
75
80
14
E8
85 0090 R
10
08
7E 02 00
31
IC
0102
0102 24 CO
0104 2E: 88 OE 0216 R
0109 3C 80
o lOB 15
~~S~E~5DET
DISK_P5:
"
5.7
5 ••
5.9
590
02C8 R
46 02 0000
0010 R
CI
02
41
06
FE CA
3C 01
75 6A
01 C8
01CA
01CE
0100
SET ERROR RETURN CODE
01 SK_P2:
0193
0195
0197
0199
0199
019C
019F
01 A I
01 AS
01 A8
01AA
01 AC
01AE
0180
o lC2
o IC2
o IC6
06-10-85
STC
RET
o l1F
0180
0180 E8
0183 C1
0188 AI
018824
0180 82
018F 3C
0191 14
1-6
Version 2.00
0IDD2E: 88 OE 0214 R
01 E2 F6 85 0090 R 01
lET 14 05
o
AND
MOV
eMP
JNE
~~:=~~~-~~~
AL,RATE MSK
I SOLATE STATE
GET DR I VE PARAMETERS FOR 1.2 M DR I VE
1.2M DRIVE?
300 OR 500 RATE IS 1.21.1 DRIVE
MOV
TEST
JZ
CX,WDRD PTR CS:DR PT
;~~~=~!ATE[DI], TRK_CAPA
GET OR I VE PARAMETERS 360K DR I VE
80 TRACK ?
MUST BE 360
CS:DR_PT+2
DISK_P6-
591
592
593
59.
595
596
597
59.
599
600
601
602
603
60.
605
606
b07
608
b09
610
bll
b12
613
614
615
01E9
01EE
01EE
01Fl
01F5
01 F8
01FA
01FA
01 FC
OIFF
0201
0202
2E:
88 OE 0218 R
4E 00
06 0000 E
46 06
C8
CX,WORD PTR CS:DR_PT+4
GET DR I VE PARAMETERS
[BP] ,CX
AX,DISK BASE
[BP+6],AX
AX,CS
SAVE POINTER IN STACK FOR RETURN
ADDRESS OF 0 I SK BASE
SAVE I N STACK
SEGMENT DISK_BASE ISAME AS THIS ONE)
MOV
CALL
XOR
CLC
RET
ES,AX
XLAT OLD
AX,AX
ES I S SEGMENT OF TABLE
TRANSLATE STATE TO COMPATIBLE MODE
CLEAR
OISK_P1:
8E CO
E8 02EE R
33 CO
F.
C3
NO DR I VE PRE SENT HANDLER
0203
0203 C6
0207
020733
0209 89
020C 88
020F 89
0212 E8
0214
46 04 00
CO
46 00
66 05
46 06
E6
616
DISK P8:
MOV
DISK P9~
XOR
MOV
MOV
MOV
JMP
01 SK_PARMS
;
617
;
61.
619
620
621
622
MOV
MOV
LEA
MOV
MDV
DISK_P61
89
80
89
8C
02140921
0216 OF 4F
0218 09 4F
021A
=
DB
DB
EQU
ON ENTRY
~ ~~
639
640
641
642
643
644
645
646
641
648
649
650
651
0220
0220
022E
0231
0232
0233
0235
0231
0238
0238
023A
023C
652
653
5-102
02C8 R
85 0090 R
CO
13
01
01
02
02
50
E8 02EE R
58
F8
88 DE
8A C3
C3
32 E4
EB Fl
~
ON EXIT:
6 E8
8A
OA
74
84
A8
74
84
OFH,04FH
09H, 04FH
•
DISK_TYPE:
;
021A
021A
0210
0221
0223
0225
0227
0229
022B
=
t o "
1.21.4
720K
- - - - --------- -- - - - - - - - ----- -- - - - - - - - -- - -- - - - --- - - - -- - - -- - - - - - - -- - - - - - - - - - - - - --
627
630
631
632
633
634
635
636
631
638
CLEAR PARMS I F NO DR I VES OR CMOS BAD
TRACKS, SECTORS /TRACK = 0
HEAD = 0
OFFSET TO 0 I SK BASE
0
EXIT
-
DR I VE PARAMETER TABLE
;
629
CLEAR NUMBER OF DR I VES
- - - - ------------ - - - - - --------- - -- - - - - - - - -- - - ------ ---- - - - - - - -- -- - -- --- - - - - -- --
DR_PTE
;
62.
[BP+4], 0
AX,AX
(BP] ,AX
(BP+5] ,AH
[BP+6] ,AX
DISK PT
ENDP-
6;~;~ ---~~ ------~ ~~: ~ ~ ;~- ---------------; -~~; ~ -~;;~;~: -~~~~~~~ I;;;~; -~~~~ -----;
623
62'
625
626
BYTE PTR
;y;~
-
THIS ROUTINE RETURNS THE TYPE OF MEDIA
01
AH
-------
;~~~
:
ORIVE TYPE,
----
~~;;
CY=O
---------------------------------------------------
CALL
MOV
OR
.JZ
MOV
XLAT NEW
AL.G!lDSK STATE[DI]
AL,AL
NO DRV
AH-;NOCHGLN
jiST
~~'~~~KCAPA
MOV
AH-;CHGLN
DT BACK:
PUSH
CALL
POP
eLC
MOV
MOV
RET
INSTALLED.
DRIVE #
TRANSLATE STATE TO PRESENT ARCH.
GET PRESENT STATE INFORMATION
CHECK FOR NO DRIVE
NO CHANGE LINE FOR 40 TRACK DR 1VE
IS THIS DRIVE AN 80 TRACK DRIVE?
IF NO JUMP
CHANGE LINE FOR 80 TRACK DRIVE
AX
XLAT OLD
AX
-
SAVE RETURN VALUE
TRANSLATE STATE TO COMPATIBLE MODE
RESTORE RETURN VALUE
NO ERROR
GET SAVED AL TO 8L
PUT BACK FOR RETURN
8X,SI
AL,BL
t
NO DR I VE PRESENT OR UNKNOWN
XOR
.JMP
01 SK_TYPE ENDP
AH,AH
SHORT DT_BACK
;-
-------- - - --- - - -- - - - - - - - - - - - - - - - - - - -- - - -- - - - --- -- -- -- - - - - - - - - -- - -- - - -- - - - - - --
;
DISK_CHANGE:
THIS ROUTINE RETURNS THE STATE OF THE DISK CHANGE LINE.
DISKETTE
IBM Person". I Computer MACRO Assembler
OSKETTE -- 06/10/85
OISKETTE BIOS
06-10-85
b54
b55
b5b
ON ENTRY:
01
b57
ON EXIT:
AH :
00 06 -
b5B
b59
bbO
661
662
663
664
665
666
667
bbB
669
670
511
672
b73
614
675
616
677
678
b79
6S0
681
682
683
6B4
bB5
bBb
6B7
bBB
6B9
690
691
692
693
694
695
696
697
69S
699
700
701
702
703
704
105
~ ~ ~~
023C
023C
023F
0243
0245
0247
0249
E8
SA
OA
74
A8
74
02C8 R
85 0090 R
CO
19
01
05
-
~~;~G~-
-
CALL
MOV
OR
0250 C6 06 0041
0255
0258
025B
0250
025F
E8
E8
8B
8A
C3
R 06
02EE R
0620 R
DE
C3
;~O~
Il!IDSKETTE STATUS
DISK CHANGE LINE INACTIVE, CY "
DISK CHANGE LINE ACTIVE, CY = I
----
~E;~
0
------- --------------------------------------------
jiST
~~fi~K_CAPA
TRANSLATE STATE TO PRESENT ARCH.
GET MEDIA STATE INFORMATION
OR I VE PRESENT ?
JUMP IF NO DRIVE
CALL
JZ
READ DSKCHNG
FINIS
GO CHECK STATE OF 0 I SK CHANGE LINE
CHANGE LINE NOT ACTIVE
XL AT OLD
SETUP END
BX,SIAL,BL
TRANSLATE STATE TO COMPATIBLE MODE
VAR 10US CLEANUPS
GET SAVED AL TO BL
PUT BACK FOR RETURN
SETIT:
MOV
FINIS:
CALL
CALL
MOV
MOV
R 80
OR
J"?
DISK _CHANGE
;
~~ ~~A:\~~~~\~ANGE
;
LINE
INDICATE MEDIA REMOVED
(tDSKETTE STATUS, T I ME OUT
SHORT FINIS
ENoP
;
SET TIMEOUT,
NO DRIVE
- --- -- - -- - - - - -- - - -- - -- - - - --- - -- - - -- - - - -- - - -- - - - -- -- -- - --- - - - -- - - -- - - -- - - - -- ---
;
FORMAT_SET
THIS ROUTINE IS USED TO ESTABLISH THE TYPE OF MEDIA TO BE USED
FOR THE FOLLOWING FORMAT OPERATION.
ON ENTRY:
S I LOW :
01
:
ON EXIT:
Il!IDSKETTE STATUS REFLECTS STATUS
AH : IIIDSKETTE STATUS
CY = I IF ERROR
~~~~~ ~
E8
56
88
32
8B
80
4E
75
80
EB
----
DRIVE #
RET
0260
0260 80 OE 0041
0265 EB EE
0267
0267
0261
026A
0268
0260
026F
0271
0216
0277
0279
021E
:
XL AT NEW
AL,Il!IDSK STATE[DI1
AL, AL
DC NON
.JZ
024B ES 08E3 R
024E 74 05
1-7
Version 2.00
02C8 R
-
C6
E4
FO
A5 0090 R OF
07
80 0090 R 90
37
~E~
------
CALL
PUSH
MOV
XOR
Mav
~~O~
OASD TYPE FOR FORMAT
DRIVE #
----
~E~~
---------------------------------------------------
XL AT NEW
SI
AX,SI
AH, AH
SI,AX
;
;
;
;
;
~~g
~~SK_STATE [011
JNZ
NOT 320
3~p
,NOT
TRANSLATE STATE TO PRESENT ARCH.
SAVE aASO TYPE
AH = ? , AL = DASa TYPE
AH : 0 , AL : aAsa TYPE
SI = DAsa TYPE
MED_D~T~~~~KS;~~+~~ri73~~~
;
MEO AC~E~= I
j
e~ATE
BYPASS IF NOT
~~g~TS~~TE[DI1,MEO_DET+RATE_250; SET TO 320/360
706
707
708
709
110
0280
0280 E8 0416 R
0283 80 3E 0041
02881420
NOT 320:
CALL
711
112
713
714
715
028A 4E
028B 15 07
028080800090 R 70
0292 E8 23
R 80
C"?
JZ
DEC
JNZ
OR
0294
0294
0295
0297
029C
4£
75 07
80 80 0090 RIO
E8 19
CHECK FOR TIME_OUT
IF TIME OUT TELL CALLER
CHECK FOR 320/360K IN 1.2M DRIVE
, BYPASS IF NOT
~~~~'fS~~TE[DI1 ,MED_DET+DBL_STEP+RATE_300 ; SET STATE
NOT 320
12
J"?
716
717
718
719
720
721
MED CHANGE
;
@DSKETTE STATUS,TIME OUT
SO
-
NOT 320 12:
-DEC
JNZ
OR
JM?
51
; CHECK FOR 1.2M MEDIA IN 1.2M DRIVE
NOT 12
; BYPASS IF NOT
100000008
(250) -> 01000000B
(300) -> OOOOOOOOB
:g~~;i~~T~~~~Gs~~
-
-;
;
;
NO RETRY:
CLC
~~~~T 5~T~~~S R~6~
RETRY
SET CARRY FOR RETRY
RETRY RETURN
CLEAR CARRY NO RETRY
NO RETRY RETURN
RET
;
ATTEMPT TO NEXT RATE
(250)
(300)
(500)
AH,RATE 500+ I
; SET CY FOR RATE 500
AH, I
; TO NEXT STATE
AH.RATE MSK
; KEEP ONLY RATE B[TS
@DSK STATE[DIJ,NOT RATE MSK+DBL STEP
; RATE, DBL STEP OFF
STC
RET
RETRY
IS UPDATED FOR RETRY.
= I FOR RETRY, CY = 0 FOR NO RETRY
~~~~
ENDP
- -- -- - - -- - - - - - -- - - - - - -- -- - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - -- - - - - - -- - -- - -- - - - - --
;
;
NUM_TRANS:
THIS ROUTINE CALCULATES THE NUMBER OF SECTORS THAT WERE
ACTUALLY TRANSFERRED TO/FROM THE DISKETTE.
;
;
;
ON ENTRY:
[BP+l]
51-HI
[SP)
ON EXIT:
AL
,
~~~
-
~~~~~
R 00
R
R
R
-------
= TRACK
= HEAD
= START
= NUMBER
~~O~
----
~~~~
SECTOR
ACTUALLY TRANSFERRED
------- -----------------------------------
XOR
CMP
JNZ
MOV
CAI,..L
MOV
MOV
CMP
JNZ
AL, AL
(tDSKETTE STATUS,O
NT OUT
DL--;4
GET PARM
BL,liiNEC STATUS+5
CX, S I
CH,PNEC STATUS+4
DIF_HD -
CLEAR FOR ERROR
CHECK FOR ERROR
I F ERROR 0 TRANSFERRED
SECTORS !TRACK OFFSET TO DL
AH
SECTORS !TRACK
GET ENOING SECTOR
CH
HEAD # STARTED
GET HEAD ENDED UP ON
IF ON SAME HEAD, THEN NO ADJUST
MDV
CMP
JZ
CH, 80H - DISK
READ THE DESIRED SECTORS INTO MEMORY
WRITE THE DESIRED SECTORS FROM MEMORY
VERIFY THE DESIRED SECTORS
FORMAT THE DESIRED TRACK
UNUSED
UNUSED
RETURN THE CURRENT DRIVE PARAMETERS
INITIALIZE DRIVE PAIR CHARACTERISTICS
INTERRUPT 41 POINTS TO DATA BLOCK FOR DRIVE 0
INTERRUPT 46 POINTS TO DATA BLOCK FOR DRIVE I
READ LONG
WRITE LONG
(READ & WRITE LONG ENCOMPASS 512 + 4 BYTES ECC)
SEEK
ALTERNATE DISK RESET (SEE DLl
UNUSED
UNUSED
TEST DRIVE READY
RECALIBRATE
UNUSED
UNUSED
CONTROLLER INTERNAL 0 I AGNOST I C
READ DASD TYPE
00
67
68
69
70
71
72
REGISTERS USED FOR F[XED DISK OPERATIONS
(OLI
!CH)
(CHI
(CL)
73
74
75
76
77
NOTE:
78
79
80
81
82
83
54
85
86
87
88
89
90
91
(80H-81H FOR. DISK, VALUE CHECKED)
(0-15 ALLOWED, NOT VALUE CHECKED)
(0-1023, NOT VALUE CHECKED) 1SEE CLl
(1-17, NOT VALUE CHECKED)
HIGH 2 BITS OF, CYL I NDER NUMBER ARE PLACED
IN THE HIGH 2 BITS OF THE CL REGISTER
(10 BITS TOTAL)
(AL)
NUMBER OF SECTORS
(ES:8X~
ADDRESS OF BUFFER FOR,READS AND WRITES,
(NOT REQU I RED FOR VER [FY)
FORMAT
1MAXIMUM POSSIBLE RANGE 1-80H,
FOR READ/WRITE LONG 1-79HJ
(AH=51 ES:BX POINTS TO A 512 BYTE BUFFER.
THE F[RST
2· (SECTORS I TRACK) BYTES CONT A I N F ~ N FOR EACH SECTOR.
F
OOH FOR A GOOD SECTOR
80H FOR A BAD SECTOR
N = SECTOR NUMBER
FOR AN INTERLEAVE OF 2 AND 17 SECTORS/TRACK
THE TABLE SHOULD BE:
=
92
93
94
95
96
97
98
5-116
DRIVE NUMBER
HEAD NUMBER
CYLINDER NUMBER
SECTOR NUMBER
DB
DB
DB
DISK
OOH, 0 1H, OOH, OAH, OOH, 02H, OOH,OSH, OOH, 03H, OOH, OCH
OOH, 04H, OOH, ODH. OOH. 05H, OOH, OEH, OOH, 06H, OOH, OFH
00H,07H,OOH,10H,OOH,08H,OOH,IIH,OOH,09H
[BM Personal Computer MACRO Assembler
DISK ----- 06/10/85
FIXED DISK B[OS
99
100
101
102
103
104
105
1 Db
107
108
109
110
111
112
113
114
115
11.
117
118
119
120
121
122
123
124
125
12.
127
128
129
130
131
132
133
134
135
13.
137
138
139
140
141
142
143
144
145
14.
147
148
149
150
151
152
153
154
155
15.
157
158
159
,.0
,.,
,.2
,.3
164
,.5
..
,
,.7
,.8
1"
170
171
172
173
174
175
17.
177
178
179
180
181
182
1B3
1B4
185
18.
187
1-2
VersIon 2.00
06-[ 0-85
PAGE
I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - ---
;
OUTPUT
AH = STATUS OF CURRENT OPERATION
STATUS BITS ARE DEFINED IN THE EQUATES BELOW
CY = a
SUCCESSFUL OPERATION (AH=O ON RETURN)
CY = I
FAILED OPERATION (AH HAS ERROR REASONI
;
I
,,
,
,,,
ERROR t IH
INO[CATES THAT THE DATA READ HAD A RECOVERABLE
ERROR WHICH WAS CORRECTED BY THE ECC ALGORITHM.
THE DATA
IS PROBABLY GOOD,
HOWEVER THE BIOS ROUTINE INDICATES AN
ERROR TO ALLOW THE CDNTROLLI NG PROGRAM A CHANCE TO DEC I DE
FOR
ITSELF.
THE
ERROR
MAY
NOT
RECUR
IF THE DATA IS
REWR ITTEN.
NOTE:
,,
IF DRIVE PARAMETERS WERE REQUESTED tDL >= BaH),
INPUT:
(DL) = DRIVE NUMBER
OUTPUT =
(DL I = NUMBER OF CONSECUT I VE ACKNOWLEOG I NG OR I VES A TT ACHED
(CONTROLLER CARD ZERO TALLY ONLY)
(CH) = MAXIMUM USEABLE VALUE FOR HEAD NUMBER
(CH) :: MAXIMUM USEABLE VALUE FOR CYLINDER NUMBER
(CL) = MAX [MUM USEABLE VALUE FOR SECTOR NUMBER
AND CYLINDER NUMBER HIGH BITS
,,,
,,,
1
,
( 1-2)
IF READ DASD TYPE WAS REQUESTED,
=
- NOT PRESENT
- 0 I SKETTE - NO CHANGE LINE AVA I LABLE
- DISKETTE - CHANGE LINE AVAILABLE
- FIXED DISK
CX, OX = NUMBER OF 512 BYTE BLOCKS WHEN AH = 3
AH
0
t
2
3
REG I STERS WILL BE PRESERVED EXCEPT WHEN THEY ARE USED TO RETURN
INFORMATION.
NOTE:
;
OOFF
OOEO
OOCC
008B
OOAA
0080
0040
0020
00 I I
00 t 0
OOOB
OOOA
0009
0007
0005
0004
0002
000 I
I F AN ERROR I S REPORTED BY THE 0 I SK CODE, THE APPROPR I ATE
ACTION IS TO RESET THE DISK, THEN RETRY THE OPERATION.
- -- - - - -- -- - - -- - - - - - -- - - - - - - - ---- ----- - ---- - - -- -- -- --- -- ----- -- -- - - --- - - - -- ----
SENSE FAIL
NO ERR
WRTTE FAULT
UNDEF-ERR
NOT RDY
TIME OUT
BAD SEEK
BAD - CNTLR
DATA CORRECTED
BAD ECC
BAD-TRACK
BAD-SECTOR
DMA -BOUNDARY
INIT FAIL
BAD RESET
RECORD NOT FND
BAD ADDR MARK
BAD::::CMD -
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
fQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
OFFH
OEOH
OCCH
OBBH
OAAH
BOH
40H
20H
l1H
IOH
08H
OAH
09H
07H
05H
04H
02H
OIH
NOT IMPLEMENTED
STATUS ERROR/ERROR REGISTER=O
WR I TE F AUL T ON SELECTED DR I VE
UNDEF I NED ERROR OCCURRED
DR I VE NOT READY
ATTACHMENT FAILED TO RESPOND
SEEK OPERATION FAILED
CONTROLLER HAS FAILED
ECC CORRECTED DATA ERROR
BAD ECC ON 0 I SK READ
NOT IMPLEMENTED
BAD SECTOR FLAG DETECTED
DATA EXTENDS TOO FAR
DR I VE PARAMETER ACT I V J TY FA I LED
RESET FA I LED
REQUESTED SECTOR NOT FOUND
ADDRESS MARK NOT FOUND
BAD COMMAND PASSED TO DISK I/O
FIXED DISK PARAMETER TABLE
+0
+2
+3
+5
+7
+8
+9
+12
+14
+t5
THE TABLE
(1
(I
(1
(I
(1
(I
1 S COMPOSED OF A BLOCK DEF I NED AS:
MAXIMUM NUMBER OF CYLINDERS
MAXIMUM NUMBER OF HEADS
NOT USED{SEE PC-XT
STARTING WRITE PRECOMPENSATION CYL
MAXIMUM ECC DATA BURST LENGTH
CONTROL BYTE
BIT
7 DISABLE RETRIES -ORBIT
6 OJ SA8LE RETRIES
B JT
3 MORE THAN 8 HEADS
(3 BYTES)- NOT USEO{SEE PC-XT
(1 WORD) -LANDINGZONE
(1 BYTE) - NUMBER OF SECTORS/TRACK
(1 8YTE) - RESERVED FOR FUTURE USE
-
WORD)
BYTE)
WORD)
WORD)
BYTE)
BYTE)
-
TO DYNAMICALLY DEFINE A SET OF PARAMETERS
8UILD A TABLE FOR UP TO 15 TYPES AND PLACE
THE CORRESPOND I NG VECTOR I NTO INTERRUPT 4 t
FOR DR [VE a AND INTERRUPT 46 FOR DR I VE 1.
DISK
5-117
IBM Personal Computer MACRO Assembler
OISK ----- 06/10/85
FIXEO DISK 810S
188
18.
,.0
06-10-85
PAGE
,--- - ---- - ---- - - ---- - -- - - -- -- -- - - - - - - -- - - - -- - - - - - - - - - - -,,
,,
;
,.,
;
,.2
'.3
I ••
,.5
I ••
HARDWARE SPECIFIC VALUES
CONTROLLER
110 PORT
I
> WHEN READ FROM:
;
,.,
,.8
I ••
200
20 I
202
203
20.
205
20.
201
208
20.
210
211
212
213
21.
215
21.
211
218
21.
220
221
222
223
22.
225
22.
227
228
22.
230
231
232
233
23.
235
23.
231
238
23.
2.0
2.,
2.2
2'3
2 ••
2.5
24.
2.,
2.8
2 ••
250
251
252
253
25.
255
25.
251
258
25.
2.0
261
2.2
2.3
2 ••
2.5
2 ••
2.,
268
2 ••
1-3
Version 2.00
HF PORT"O
HF-PORT ... I
HF-PORT ... 2
HF-PORT"3
HF-PORT"4
HF-PORT ... 5
HF-PORT"'6
HF=PORT .. 7
;
;
,
,
;
;
-
READ DATA (FROM CONTROLLER TO CPU)
GET ERROR REGISTER
GET SECTOR COUNT
GET SECTOR NUMBER
GET CYLINDER LOW
GET CYLINDER HIGH (2 8ITS)
GET SIZE/DR I VE/HEAO
GET STATUS REGISTER
;
> WHEN WR I TTEN TO:
;
,
,,
,
HF PORT"O
HF-PDRT"I
HF-PORT"'2
HF-PORT .. 3
HF-PORT"4
HF-PORT ... 5
HF-PORH6
HF=PORT .. 7
;
;
-
WRITE DATA (FROM' CPU TO CONTROLLER)
SET PRECDMPEN5ATlDN CYLINDER
SET SECTOR COUNT
SET SECTOR NUMBER
SET CYL I NDER LOW
SET CYLINDER HIGH (2 8ITS)
SET SIZE/DRIVE/HEAD
SET COMMAND REG I STER
,--- - ---- - --- - -- - - - - - - - - - - - - - - - - - - --- - - - - - - - - - -- - - -- ---;
;
OIFO
03F6
HF PORT
HF=REG_PORT
EQU
EQU
=
000 1
=
=
=
=
0004
0008
0010
0020
0040
0080
ST ERROR
5T-INDEX
ST-CORRCTO
ST-oRQ
ST-SEEK COMPL
ST-WRT FL T
ST-READY
ST=eUSY
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
0001
0002
0004
ERR DAM
ERR-TRK 0
ERR=A80RT
01FOH
03FbH
; DISK PORT
STATUS REGISTER
= 0002
=
=
;
=
=
-----
0010
iRR
0040
0080
iRR DATA ECC
ERR=8AD_BLOCK
0010
0020
0030
0040
0050
0060
0070
0090
0091
0001
0002
0008
RECAL CMD
READ eMD
WRITE CMD
VERIFY CMD
FMTTRK-CMO
INIT cK10
SEEK-CMD
DIAG-CMD
SET PARM CMD
NO RETRIES
ECe MODE
8UFFER_MODE
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
0002
0002
ECC CORRECT I ON SUCCESSFUL
SEEK COMPLETE
WRITE FAULT
ERROR REG ISTER
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
10
000000018
000000 I 08
00000 1 008
0000 I 0008
000 100008
00 I 000008
010000008
100000008
0000000 18
000000 I 08
00000 I 008
0000 I 0008
000 I 00008
001000008
a I 0000008
100000008
DATA ADDRESS MARK NOT FOUND
TRACK 0 NOT FOUND ON RECAL
A80RTED COMMAND
NOT USED
10 NOT FOUND
NOT USED
000 I 00008
001000008
00 [ [00008
010000008
010100008
011000008
011100008
100 1 OOOOB
100100018
0000000 I 8
000000108
000010008
DR [VE RECAL
READ
WRITE
VERIFY
FORMAT TRACK
INITIALIZE
SEEK
DIAGNOSTIC
DR I VE PARMS
CMD MODIFIER
CMD MODIFIER
CMD MODIFIER
25H
(10H)
(20H)
(30H)
(40H)
(50H)
(60H)
(70H)
(90H)
(9IH)
(0 [H)
(02H)
(08H)
MAX FILE
S_~'(AX_F I LE
EQU
EQU
= 0025
= 0600
= 0100
DELAY I
DELAY-2
OELAY::::3
EQU
EQU
EQU
0600H
OIOOH
DELAY FOR OPERATION COMPLETE
DELA Y FOR READY
DELAY FOR DATA REQUEST
=
HF_FAIL
EQU
08H
CMOS FLAG IN BYTE OEH
; -----
COMMAND BLOCK REFERENCE
0008
5-118
EQU
DISK
8YTE PTR
(BPJ-8
(lCMD BLOCK REFERENCES BLOCK HEAD IN SS
(BPT PO I NTS TO COMMAND BLOCK TAl L
AS DEFINED BY THE "ENTER" PARMS
IBM Personal Computer MACRO Assembler
D]SK ----- 06/10185
F]XED D]SK BIOS
1-4
Version 2.00
Ob-IO-85
270
211
272
273
274
215
PAGE
; ----------- --- -- -- - - -- - - - - - ------------ ---- --------------------; FIXED DISK I/O SETUP
278
219
280
281
282
283
284
285
28.
287
288
289
290
291
292
293
294
295
296
297
298
299
300
30 I
302
303
304
305
30.
307
308
309
310
311
312
313
314
315
31.
311
318
319
320
321
322
323
;
;
;
2"
211
324
325
32.
327
328
329
330
331
332
333
334
335
33.
337
338
339
340
341
342
343
344
345
34.
347
348
349
350
351
352
353
354
355
35.
351
358
359
3.0
3.'
3.2
3.3
364
3.5
3 ••
3.7
3.8
3.9
370
311
312
373
374
375
37.
311
378
379
380
381
382
383
-
ESTABLISH TRANSFER VECTORS FOR THE FIXED DISK
PERFORM POWER ON 0 I AGNOST [CS
SHOULD AN ERROR OCCUR A "1101" MESSAGE [S D]SPLAYED
------- - - -- - --------- - - - ------------------- ---- -------- --------ASSUME
0000
0000
0001
0004
0006
0009
OOOC
OOOF
0012
0018
ODIC
0022
0026
002C
0030
0036
0031.
003C
003E
0040
0042
0044
0046
0048
FA
B8
8E
AI
A3
AI
1.3
Cl
8C
Cl
8C
Cl
BC
Cl
8C
E4
24
EB
E6
E4
24
Ea
E6
DISK SETUP
CLI
---- R
D8
004C R
DIDO R
004E R
0102 R
06 004C
DE 004E
06 0108
OE 0101.
06 0104
DE 0106
06 0118
OE 01 II.
AI
BF
00
AI
21
FB
00
21
R
R
R
R
R
R
R
R
06CD R
0000 E
0000 E
004B
004C
0040
0050
0055
0051.
005F
0061
0064
0066
0068
0061.
0060
0060
0010
0012
0015
0017
0011.
Q07F
0081
0084
IE
01
E8
C6
C6
C6
BO
E8
81.
24
74
E9
$.2
INTBOI.AL
AL,INTAOI
AL,OFBH
"2
STI
ASSUME
PUSH
OS :OATA, ES: ASSO
"OV
"OV
GET ABSOLUTE SEGMENT
SET SEGMENT REG I STER
GET 0 I SKETTE VECTOR
INTO INT 40H
F I XED 0 I SK HANDLER
F I XED 0 I SK INTERRUPT
PARM TABLE DR I VE 80
PARM TABLE DRIVE 81
SECOND INTERRUPT CH I P
LET I NTERRUPTS PASS THRU TO
SECOND CHIP
J"P
OUT
POP
CALL
"OV
INTAOI,AL
OS
ES
005
1II0lSK STATUS I ,0
IPHF NOM,O
PCONTROL BYTE. 0
MOVE ABSO PO]NTER TO
EXTRA SEGMENT PO INTER
ESTABL [SH DATA SEGMENT
RESET THE STATUS INDICATOR
ZERO NUMBER OF F I XED DISKS
"OV
CALL
~~o~M~~Agl AG+NM I
"OV
J"P
AH,AL
AL,BAD BAT+BAD CKSUM
LI
POD_DONE
ANO
"OV
CALL
AH,NOT HF FAIL
AL,CMOS DIAG+NMI
CMOS WRITE
ALLOW FIXED DISK
WRITE IT BACK
"OV
CALL
~~o~M~~Ag I SK+NM I
"OV
IIIPORT OFF, 0
BL,AL AX,OOOFOH
POD_DONE
ZERO CARD OFFSET
SAVE FIXED DISK BYTE
GET FIRST DRIVE TYPE AS OFFSET
NO FIXED DISKS
ANO
JZ
CHECK CMOS VALIDITY
SAVE CMOS FLAG
CHECK FOR VAL I 0 CMOS
CMOS NOT VALID -- NO FIXED DISKS
LI:
BO E4 F7
BO 8E
E8 0000 E
BO 92
E8 0000 E
C6 06 0071 R 00
81. DB
25 ODFO
14 72
"OV
ANO
JZ
e"p
0086 3C FO
0088 75 10
008A
008C
008F
0091
0093
0095
0091
009A
0091.
009D
001.1
001.6
001.8
OOAB
001.0
J"P
OUT
IN
0000 E
06 0014 R 00
06 0015 R 00
06 0076 R 00
8E
0000 E
EO
CO
03
OOFB R
NEAR
ANO
ANO
0041. FB
PROC
AX,ABSO
DS,AX
AX, WORD PTR IPORG VECTOR
WORD PTR 1110 I SK VECTOR, AX
AX,WORD PTR 1II0RG VECTOR+2
WORD PTR IPDISK VECTOR+2,AX
WORD PTR 1II0RG VECTOR,OFFSET 0] SK 10
WORD PTR 1II0RG-VECTOR+2,CS
WORD PTR IIIHDISK INT ,OFFSET HD INT
WORD PTR IIIHDISK-INT+2,CS
WORD PTR IIIHF TaL VEC ,OFFSET FO TBL
WORD PTR IIIHF-TBL-VEC+2 ,CS
WORD PTR IIIHFT TBC VEC, OFFSET FD TBL
WORD PTR Il'HF I-TBL-VEC+2. CS
AL, I NTBO I
; TURN ON
AL,OBFH
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
"OV
IN
011.9 R
WORK OFF OS REG [STER
CS:CODE,DS:ABSO
BO
E8
3C
74
3C
17
CI
99
0000 E
00
65
2F
61
EO 04
L2
"OV
CALL
~~o~M~~Ag I SK_'
e"p
JE
e"p
JA
SHL
CHECK FOR EXTENDED DR I VE TYPE BYTE USE
USE DRIVE TYPE I --> 14 IF NOT IN USE
AL,OFOH
JNE
lPL
+NM I
AL,OFOD DONE
AL,41
POD DONE
AX,4
GET EXTENDED TYPE FOR OR I VE C:
FROM CMOS
I S TYPE SET TO ZERO
EXIT IF NOT VALID AND NO FIXED DISKS
]S TYPE WITHIN VALID RANGE
EXIT WITH NO FIXED DISKS [F NOT VALID
ADJUST TYPE TO HIGH NIBBLE
L2:
05 FFFO E
26: A3 0104 R
C6 06 0075 R 01
8A C3
CO EO 04
74 2A
B4 00
AOO
"OV
"OV
"OV
SHL
JZ
MOV
AX,OFFSET FD TBL-16D
WORD PTR IPHF-TBL VEC, AX
!PHFNUM,!
AL,8L
AL,4
SHORT L4
AH,O
COMPUTE OFFSET OF FIRST DRIVE TABLE
SAVE IN VECTOR POINTER
AT LEAST ONE DRIVE
GET SECOND DR I VE TYPE
ONLY ONE DRIVE
OOAF 3C FO
OOBI 75 10
e"p
AL,OFOH
L3
CHECK FOR EXTENDED DR I VE TYpE BYTE USE
USE DRIVE TYPE I --> 14 IF NOT IN USE
00B3
00B5
00B8
0081.
OOBC
OOBE
OOCO
00C3
00C3
00C6
00C8
OOCC
OOCE
0002
0007
0007
0009
OOOB
0000
OODF
00E2
00E4
OOEl
00E9
OOEC
OOFf
00F3
OaFS
00F8
00F8
BO 9A
E8 0000 E
3C 00
MOV
CALL
~~o;M~~Ag [SK_2+NM I
14 18
JE
eMP
JA
AL,OL4
AL,47
L4
AX,4
GET EXTENDED TYPE FOR DR I VE 0:
FROM CMOS
I S TYFE SET TO ZERO
SKIP IF SECOND FIXED DISK NOT VALID
IS TYPE WITHIN VALID RANGE
SKIP IF NOT VALID
ADJUST TYPE TO HIGH NIBBLE
~;:~~FSET FD_TBL-16D
COMPUTE OFFSET FOR SECOND FIXED DISK
JNE
e"p
3C 2F
71 17
CI EO 04
as FFFO E
8B 08
2E: 83 3F 00
74 09
26: A3 0 I 18 R
C6 06 0075 R 02
SHL
L3:
AOO
MOV
eMP
JE
"OV
L4:
82
B4
CD
72
AI
88
05
BB
E8
80
76
B2
E8
C3
80
14
f3
fA
006C R
08
0444
C8
0104 R
3E 0075 R 0 f
05
81
0104 R
"OV
"OV
"OV
INT
Je
"OV
"OV
AOO
"OV
CALL
e"p
JBE
"OV
CALL
POD DONE:
RET
WORD PTR CS:(BX],O
; CHECK FOR ZERO CYLINDERS IN TABLE
L4
; SKIP DRIVE IF NOT A VALID TABLE ENTRY
WORD PTR IIIHF I TBL VEC, AX
@HF_NUM,2
TWO DRIVES
DL,80H
AH,14H
13H
CTL ERR X
AX. 'iTi MER LOW
8X,AX
AX,b-182
CX,AX
HD RESET I
PHF NUM,I
FaD-DONE
DL.8IH
HD_RESET_I
CHECK THE 'CONTROLLER
USE CONTROLLER DIAGNOSTIC COMMAND
CALL BIOS WITH DIAGNOSTIC COMMAND
DISFLAY ERROR MESSAGE IF BAD RETURN
GET START TIMER COUNTS
60 SECONDS-
18.2
SET UP DRIVE 0
WERE THERE TWO DR I VES?
NO-ALL DONE
SET UP DRIVE 1
DISK
5-119
IBM Personal Computer MACRO Assembler
DISK ----- 06/10/85
FIXED DISK BIOS
384
385
386
381
388
389
390
391
392
393
394
395
396
391
398
399
400
401
402
403
404
405
406
401
408
409
410
411
412
413
414
415
416
411
418
419
420
421
422
423
424
425
426
421
428
429
430
431
432
433
434
435
436
431
438
439
440
441
442
443
444
445
446
441
448
449
450
451
452
453
454
455
456
451
1-5
Version 2.00
Ob-IO-85
; ----- POD ERROR
00F9
OOF9
OOFC
OOFF
0102
8E 0000 E
E6 0 I 1C R
EB 0000 E
E6 F4
0104
0104 53
0105 51
010684 09
0108 CD 13
OIOA 72 06
OIOC 8411
010E CD 13
01101319
0112 E8 018A R
011513EF
0117 BE 0000 E
I I A F6 C2 01
o lID 75 51
OIIF 8E 0000 E
0122 E8 0!1C R
0125 E8 4F
01218400
0129 CD 13
012884 08
0120 8A DA
0!2F CD 13
0131 1238
013389 OE 0042 R
0137 8A D3
0139 B8 0401
013C CD 13
013E 13 39
014080 FC OA
01437434
0145 80 FC II
0148 14 2F
014A 80 FC 10
014D 74 2A
Ot4F E6 018A R
0152 12 11
0154 88 OE 0042 R
0158 8A CI
o 15A 24 3F
015C FE C8
015E 14 C1
016080 EI CO
0163 OA C8
016589 OE 0042 R
0169 E8 CE
0168 BE 0000 E
o 16E F6 C2 0 I
0171 15 03
0173 BE 0000 E
0176
0176 E8 0000 E
0179
0119 59
011A 58
o 1T8 C3
o 11C
o
OITC
011C
011F
0182
0184
0186
0189
018A
88
E8
OC
86
E8
C3
8E8E
0000 E
08
EO
0000 E
CTL ERR X ~
MOV
CALL
CALL
JMP
HD RESET 1
PUSH
PUSH
=
MOV
RES_'
1NT
Je
Mav
1NT
JNe
CALL
JNe
RES_FL: MOV
TEST
JNZ
RES_21
Mav
CALL
JMP
RES_RS: MOV
1NT
RES_CK
~
MOV
Mav
1NT
Je
Mav
RES_31
MOV
MOV
1NT
JNe
eMP
JE
eMP
JE
eMP
JE
CALL
Je
MOV
MOV
AND
DEe
JZ
AND
OR
RES_ER:
MOV
JMP
MOV
TEST
JNZ
MOV
SI,OFFSET FI182
SET FAIL
E MSG
POD_DONE
PRDC
8X
CONTROLLER ERROR
DO NOT IPL FROM DISK
01 SPLA Y ERROR AND SET
(BP)
ERROR FLAG
NEAR
SAVE TIMER LIMITS
ex
AH,09H
13H
RES 2
AH,lIH
13H
RES CK
POD-TCHK
RES-I
51 ,OFFSET FITal
DL, I
RES EI
SI,OFFSET FI180
SET FAIL
SHORT RES EI
AH,OOH
13H
AH,08H
BL,DL
13H
RES ER
WORD PTR IfINEC STATUS,CX
DL,8L
AX,0401H
13H
RES OK
AH, SAD SECTOR
RES OKAH,OATA CORRECTED
RES OK AH,BAD ECC
RES OKPOD-TCHK
RES-ER
CX,WORD PTR @NEC STATUS
AL ,CL
AL,3FH
AL
RES RS
CL,OCOH
CL,AL
WORD PTR @NEC STATUS,CX
RES 3
51 ,OFFSET FI191
DL,I
RES EI
51 ,OFFSET F1T90
SET DR I VE PARAMETERS
RECALl BRATE DR I VE
DRIVE OK
CHECK T I ME OUT
INDICATE DISK
1 FAILURE
INDICATE OISK 0 FAILURE
DO NOT TRY TO IPL DISK 0
RESET THE DR I VE
GET MAX CYLI NDER. HEAD, SECTOR
SAVE DR I VE CODE
SAVE MAX CYLINDER, SECTOR
RESTORE DR I VE CODE
VERIFY THE LAST SECTOR
VERIFY OK
OK ALSO IF JUST 10 READ
CHECK FOR TIME OUT
FAILED
GET SECTOR ADDRESS, AND CYLINDER
SEPARATE OUT SECTOR NUMBER
TRY PRE V I OUS ONE
WE'VE TR I EO ALL SECTORS ON TRACK
KEEP CYLINDER BITS
MERGE SECTOR WITH CYLINDER BITS
SAVE CYL I NDER, NEW SECTOR NUMBER
TRY AGAIN
INDICATE DISK 1 ERROR
INDICATE DISK 0 ERROR
RES_El :
CALL
DISPLAY ERROR AND SET
(SP)
ERROR FLAG
RES_OK:
POP
POP
RET
HD_RESET_I
SET FAIL
MOV
CALL
OR
XCHG
CALL
RET
RESTORE TIMER LIMITS
ENDP
PROC
NEAR
AX,X·(CMOS DIAG+NMI)
CMOS READ AL,HF FAIL
AH, ALCMOS_WR I TE
SET_FAIL
ENDP
POD TCHK
POP
POP
PDP
PUSH
PUSH
PUSH
MOV
PROC NEAR
AX
GET CMOS ERROR BYTE
SET DO NOT I PL FROM 0 I SK FLAG
SAVE IT
PUT IT OUT
458
459
460
461
402
463
464
465
466
461
468
469
4TO
411
412
413
414
415
416
411
418
419
480
481
482
483
484
485
018A
o 18A
0188
o 18C
o 18D
018E
o 18F
0190
58
59
58
53
51
50
AI 006C R
0193 38
0195 12
019138
0199 T2
0198 E8
0190 3B
019F 12
OIAI 38
01A3 12
01 A5
01 A6
01AT
01 A8
01 A9
D9
06
D8
OC
04
C3
04
CI
02
F9
C3
Fa
C3
,=
TCHKNG:
TCHKG:
AX
AX,0TIMER_LOW
ex,cx
TCHK I
eX,AX
TCHKG
SHORT TCHK2
AX,BX
TCHKNG
AX,CX
TCHKG
STC
RET
DISK
AND SAVE THEM AGAIN
RESTORE RETURN
AX ::: CURRENT T I ME
BX
START TI ME
CX
END TIME
START < END
END < START < CURRENT
END, CURRENT < START
CURRENT < START < END
START < CURRENT < END
OR CURRENT < END
START
CARRY SET I NO I CATES T I ME OUT
INDICATE STILL TIME
CLC
RET
01 A9
5-120
TCHK
BX
8X
J8
J8
JMP
CMP
J8
CMP
J8
CHECK FOR 30 SECOND TI ME OUT
SAVE RETURN
GET TIME OUT LIMITS
ex
eMP
eMP
TCHK2:
ex
POD_ TCHK
ENDP
01 SK_SETUP
ENOP
IBM Personal Computer MACRO Assembler
DISK ----- 06/10/85
FIXED DISK 8105
486
PAGE
487
488
489
;
492
493
494
495
49b
497
498
499
500
501
502
503
504
505
SOb
507
508
509
SID
511
512
513
514
515
51 b
517
518
519
520
521
522
523
524
525
52b
527
528
529
530
531
532
533
534
535
53b
537
538
539
540
541
542
543
544
545
54b
547
548
549
550
551
552
553
554
555
55b
557
558
559
5bO
5bl
5b2
5b3
5b4
5.5
5bb
5b7
5b8
569
510
571
572
573
574
575
57b
577
578
579
580
581
582
583
584
585
58.
587
588
589
590
591
592
593
594
595
59b
597
598
599
I-b
06-10-85
.----- ---------- --------------- ---------FIXED DISK BIOS ENTRY POINT
; ------ - - - ------------------- -- ----------
490
491
Version 2.00
01 A9
DISK
-
0lA9
01 AC
OIAE
OIBO
0190
0193
0lB3
0lB4
0lB6
0lB8
OIBA
OIBC
OIBF
OICI
OICI
0lC4
0lC6
0lC9
OICC
OICE
0101
0101
a ID5
0106
0101
0108
0109
o IDA
OIDB
OIOC
OIOE
OlEO
0lE2
0lE5
0lE8
OIEC
OIEF
01FO
OIFI
01 F2
0lF3
0lF4
01 F5
01 F6
01 F7
OlF8
OIFB
80 FA 80
13 05
CO 40
CA 0002
10 PROC
ASSUME
eMP
JAE
INT
FAR
OS ;OATA, ES: NOTH I NG
DL,eOH
TEST FOR FIXED DISK DRIVE
YES, HANDLE HERE
DISKETTE HANDLER
AI
40H
BACK TO CALLER
RET
AI:
5TI
FB
OA
75
CO
2A
80
77
E4
09
40
E4
FA 81
EF
80
75
E9
80
75
E9
FC 08
03
0393 R
FC 15
03
0353 R
C8
53
51
52
IE
06
56
51
OA
15
62
E8
E8
8A
80
F5
5F
5E
07
IF
5A
59
56
C9
CA
0008 00
ENABLE
OR
JNZ
I NT
SUB
CMP
JA
AH,AH
A2
40H
AH,AH
DL, {80H + S_MAX_FILE RET_2
eMP
JNZ
JMP
eMP
JNZ
JMP
AH,08H
A3
GET PARM N
AH,T5H
A4
READ_DASD_TYPE
INTERRUPTS
RESET NEC WHEN AH=O
II
A2:
A3:
A4:
E4
02
80
0225 R
0000 E
26' 0014 R
FC 01
0002
OIFB
OIFB 02CI
OIFD 0315
OIFF 031E
020 I 0325
0203 032C
0205 033E
0207 02B9
0209 02B9
0208 02B9
0200 03FI
020F 0423
0211 042A
0213 0431
0215 02CI
0217 02B9
02 \ 9 0289
0216 044F
0210 0466
021 F 02B9
0221 02B9
0223 048E
002A
ENTER
PUSH
PUSH
PUSH
PUSH
PUSH
PUSH
PUSH
OR
JNZ
MOY
CALL
CALL
MOY
eMP
eMe
POP
POP
POP
POP
POP
POP
POP
LEAVE
RET
DISK_IO ENDP
A5:
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
0225
0225 E8 0000 E
022880 FC 01
022B 75 03
0220 E9 0315 R
0230
0230 C6 06 0074 R 00
0235 53
0236 8A IE 0075 R
023A 50
023B 80 E2 7F
023E 3A DA
0240 76 15
0242 06
0243 E8 06B7 R
0246 26: 8B 41 05
024A CI E8 02
0240 88 46 F8
0250 26: 8A 47 08
0254 52
0255 BA 03F6
0258 EE
0259 5A
025A 07
025B 8A 26 0016 R
025F 80 E4 CO
0262 OA EO
0264 88 26 0076 R
0268 58
0269 88 46 F9
026C 50
0260 8A CI
026F 24 3F
MIL
LABEL
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
EQU
DISK_IO CONT
-CALL
eMP
JNZ
JMP
SUO:
MOV
PUSH
MOV
PUSH
AND
CMP
JBE
PUSH
CALL
MOV
SHR
Mav
MOV
PUSH
MOV
OUT
POP
POP
MOV
AND
OR
MOV
POP
MOV
PUSH
MOV
AND
8,
GET PARAMETERS
I S A SPEC I AL CASE
READ DASD TYPE
I S ALSO
SAVE REGISTERS DURING OPERATION
SAVE (BPI AND MAKE ROOM FOR @CMD BLOCK
IN THE STACK. THE COMMAND BLOCK-IS:
peMD_BLOCK
BYTE PTR [BPj-8
a
BX
==
ex
ox
OS
E5
5I
01
AH,AH
CHECK FOR RESET
AS
DL,80H
DISK 10 CONT
DDS AH,@DISK STATUS I
AH,I
-
01
51
FORCE OR I VE 80 FOR RESET
PERFORM THE OPERATION
ESTABL I SH SEGMENT
GET STATUS FRaM 'OPERATION
SET THE CARRY FLAG TO I NO I CATE
SUCCESS OR FAILURE
RESTORE REGISTERS
E5
OS
ox
ex
BX
ADJUST (SP I AND RESTORE
THROW AWAY SAVED FLAGS
WORD
D [SK RESET
RETURN STATUS
01 SK READ
DISK-WRITE
01 SK-VERF
FMT TRK
BAD-COMMAND
BAD-COMMAND
BAD-COMMAND
INIT DRV
RD LONG
WR-LONG
DISK 'SEEK
01 SK-RESET
BAD COMMAND
BAD-COMMAND
TST-RDY
HDISK RECAL
BAD COMMAND
BAD-COMMAND
CTLR D I AGNOST I C
$-MIPROC
FUNCT
OOOH
00 I H
OOZH
003H
004H
005H
006H
001H
008H
009H
OOAH
OOBH
OOCH
OODH
OOEH
OOFH
o IOH
o IIH
OIZH
013H
Ol4H
(BP)
[ON TRANSFER TABLE
FORMAT BAD SECTORS
FORMAT DR I VE
RETURN PARAMETERS
READ BUFFER
WRITE BUFF~R
MEMORY DIAGNOSTIC
DRIVE DIAGNOSTIC
CONTROLLER D I AGNOST I C
NEAR
005
AH,O IH
ESTABL I SH SEGMENT
RETURN STATUS
SUD
RETURN_STATUS
@DISK STATUSI,O
8X
BL,@HF NUM
AX
OL,1FH
BL,DL
BAD COMMAND POP
ES GET VEC
AX,WORD PTR ES:[BX][5]
AX,2
(ICMD BLOCK, AL
AL,BYTE PTR ES: [BX][81
OX
OX, HF REG PORT
DX,AL-OX
ES
AH. PARAMETER BLOCK
AL,ES:[BX][2]
GET NUMBER OF HEADS
AL
CONVERT TO 0- INDEX
AH,(tCMD BLOCK+5
GET SOH REGI STER
AH, OFOHCHANGE HEAD NUMBER
AH, AL
TO MAX HEAD
(tCMD BLOCK + 5, AH
AL,ES:[BX][14]
MAX SECTOR NUMBER
II'CMO BLOCK + I • AL
AX,AX
(tCMD BLOCK + 3, AL
ZERO FLAGS
COMMAND
TELL CONTROLLER
INIT EXIT
CONTROLLER BUSY ERROR
NOT BUSY
WA IT FOR IT TO BE DONE
INIT EXIT
TIME OUT
CHECK_STATUS
ENDP
; -------------------------------- -------;
READ LONG
0423
RD_LONG
863
864
0423 C6 46 FE 22
0421 E9 04C6 R
042A
RD_LONG
MOV
JMP
;
;
(AH
= OAH)
:
PROC
NEAR
(tCMD BLOCK+6,READ CMD OR ECC MODE
COMMAND I'
ENDP
- -- -- - - - - -------- -- - - - ----------- --- -- -WRITE LONG
042A
042A C6 46 FE 32
042E E9 0505 R
0431
875
(AH
= OBH)
:
NEAR
PROC
~g~~A~~gCK+6.WRITE-CMD OR ECC_MODE
ENDP
----- - - -SEEK
- - - - - - - - - -- -- - - - - - - - - - - - - - - - ---(AH = OCH) :
; ------- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ---;
;
876
877
878
879
880
881
882
883
884
885
886
881
588
889
890
891
892
893
OPERATION FAILED
STC
JMP
GET_PARM
8602
871
812
813
874
SECTORS
HEADS
O-N RANGE
DRIVE COUNT
RE7
SUB
SUB
SUB
EA
857
8S8
8S9
860
861
8605
866
867
868
869
870
; HIGH TWO BITS OF CYLINDER
BX
ES
INITIALIZE DRIVE
03Fl
03Fl
d3F5
03F8
03FC
03FE
0401
0404
0406
0409
0400
0410
0412
0415
0418
041A
0410
041 F
0422
0422
0423
MAX NUMBER OF CYL I NDERS
ADJUST FOR O-N
G4:
C6
84
2A
28
28
F9
E8
834
83S
831
836
639
840
841
842
843
844
845
TEST WITHIN RANGE
G5:
58
833
8360
I
TBL_ VEC
0431
0431
0435
0438
043A
0430
043F
0442
0441
0449
044E
044E
C6
E8
75
E8
75
E8
80
75
C6
46 FE 10
054F R
14
0585 R
OF
0623 R
3E 0014 R 40
05
06 0074 R 00
"NZ
CALL
"NZ
CALL
eMP
"NE
MOV
PROC
NEAR
@CMD 8LOCK+6.SEEK CMO
COMMAND
OS EXiT
WATT
OS EXIT
CHECK STATUS
IDOl SK-STATUS I ,BAD SEEK
OS EXIT
IDDISK_STATUS 1,0
OS EXIT:
RET
C3
044F
5-124
DISK SEEK
MOV
CALL
DISK_SEEK
DISK
ENDP
CONTROLLER BUSY ERROR
T I ME OUT ON SEEK
[8M Personal Computer MACRO Assembler
o[SK ----- 06/10/85
FIXED DISK 8105
894
895
PAGE
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
911
918
919
920
921
922
923
924
925
926
921
928
929
930
931
932
;
;
044F
044F
0452
0454
0451
045A
0458
045E
0460
0465
0466
E8
75
8A
SA
EE
E8
75
C6
C3
11
46 FD
01 F6
0635 R
05
06 0014 R 00
;
C6
E8
75
E8
14
E8
75
46 FE 10
054F R
19
0585 R
05
0585 R
OF
E6
80
15
C6
0623 R
3E 0014 R 40
05
06 0074 R 00
80 3E 0014 R 00
C3
TEST 0' SK READY
TST ROY PROC
CALL
JNZ
MOV
MOV
OUT
CALL
JNZ
MOV
TR EX:
RET
TST_RDY ENDP
;
0466
0466
046A
0460
046F
0412
0474
0477
0479
0419
047C
048[
0483
0488
0488
0480
048E
-----
1-10
06-10-85
Version 2.00
(AH
FA
E4
24
E8
E6
E4
24
EB
E6
F8
E8
15
8A
80
EE
E8
84
15
8A
EC
A2
84
3C
74
84
AI
8F
00
AI
21
FB
00
21
WA [T FOR CONTROLLER
SELECT OR J VE
CHECK STATUS ONLY
WIPE OUT DATA CORRECTED ERROR
--------------------------------RECALl8RATE
(AH = [IH) :
- - -- -- ------------- -------- ---- - - -- - ---
HDISK RECAL
MOV
CALL
JNZ
CALL
JZ
CALL
JNZ
RECAL X:
CALL
CMP
JNE
MOV
RECAL EXIT:
CMP
RET
HD[SK_RECAL
;
;
048E
048E
048F
0491
0493
0495
0497
0499
0498
0490
049F
04AO
04A3
04A5
04A8
04AA
04A8
04AE
04BO
0482
0485
0486
0489
0488
0480
04BF
04C 1
04C1
04C5
04C6
:
NEAR
NOT BUSY
TR EX
AL -;-Q!lCMD BLOCK -t 5
DX,HF PORT-+6
OX ,ALCHECK ST
TR EXQ!lDTsK_STATUS1,O
PROC
NEAR
<:!ICMD 8LOCK-+6,RECAL CMD
COMMAND
RECAL EX I T
WAIT RECAL X
WAIT RECAL_EXIT
SEEK NOT COMPLETE
IS OK
Q!lOISK_STATUS1,O
ENDP
CONTROLLER DIAGNOSTIC
(AH
-- ---- ---------------- --- - - --
CTLR 0 I AGNDST I C
CLI
IN
ANa
JMP
OUT
IN
ANa
J"P
OUT
START THE OPERAT[ON
ERROR
WA I T FOR COMPLET I ON
TIME OUT ONE OK ?
WAIT FOR COMPLETION LONGER
TIME OUT TWO TIMES IS ERROR
CHECK STATUS
olIDISK-STATUS1,8AD SEEK
RECAL -EX [T
@OISK::::STATUS1,O
933
934
935
936
931
938
939
940
941
942
943
944
945
946
941
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
914
975
976
917
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
= 10H)
PROC
=
14H)
:
NEAR
AL,INTBOI
AL.08FH
D[SA8LE INTERRUPTS WH[LE CHANGING MASK
TURN ON SECOND INTERRUPT CH I P
$,2
INT80l,AL
AL.INTAOI
AL.OF8H
',2
LET I NTERRUPTS PASS THRU TO
SECOND CH IP
INTAOI,AL
5T I
05E6 R
1A
01 F7
90
CALL
JNZ
"OV
MOV
OUT
CALL
"OV
JNZ
"OV
IN
"OV
"OV
CMP
JE
MOV
05E6 R
80
OF
0 IF 1
0080 R
00
01
02
20
88 26 0074 R
C3
NOT 8USY
CD ERR
DX-;-HF PORT -+ 7
AL,DIAG CMD
OX, AL
NOT 8USY
AH,TIME OUT
CD EXITDX-;-HF PORT -t 1
AL,DX@HF ERROR, AL
AH,O
AL,I
SHORT CD EX I T
AH,8AD_CNTLR
WA I T FOR CARD
8AD CARD
ST ART DIAGNOSE
WA I T FOR
I T TO COMPLETE
TIME OUT ON DIAGNOSTIC
GET ERROR REG I STER
SAVE
IT
CHECK FOR ALL OK
CD ERR:
CD-EX IT:
MOV
@DISK_STATUSI,AH
RET
CTLR_DIAGNOSTIC ENOP
.-------- - - - - - -- -----------------;
04C6
04C6
04C9
04C8
04CO
0400
0402
0402
0405
0407
040A
0400
04DE
04DF
04El
04E2
04E6
04E8
04E8
04EO
04FO
04F3
04F4
04F1
04F8
04FA
04FO
04FF
0502
0504
0504
0504
COMMAND I
REPEATEDL Y J NPUTS OAT A TILL
NSECTOR RETURNS ZERO
~;~~~~~~~----E8
72
88
E8
75
0694 R
39
F8
054F R
32
E8 0585 R
75 20
89 0100
8A OIFO
FA
FC
F3/ 60
F8
F6 46 FE 02
14 12
E8 0600 R
72 17
8A 01 FO
89 0004
EC
26: 88 05
47
E2 F9
E8 0623 R
75 05
FE 4E F9
75 CE
C3
CALL
JC
"OV
CALL
JNZ
CHECK DMA
CMD ABORT
OJ ,BX
COMMAND
CMD_A80RT
CHECK 64K 80UNDARY ERROR
CALL
JNZ
MOV
"OV
WAIT
TM OUT
CX-;-256D
DX,HF _PORT
WA I T FOR DATA REQUEST
TIME OUT
SECTOR SIZE IN WORDS
OUTPUT COMMAND
INTERRUPT
CLI
CLO
REP
INSW
GET THE SECTOR
@CMD BLOCK-t6 I ECC MODE
CMD 13
WA [T ORQ
TM OOT
DX-;-HF PORT
CX , 4 AL,DX
ES:8YTE PTR [01] ,AL
01
CMD [2
CHECK STATUS
CMO ABORT
DISK PARMS
SUB
MOV
ASSUME
TEST
JZ
LES
JMP
AX. AX
ES,AX
ES: A8S0
DL, I
GV 0
BX-;-@HFI TBL VEC
SHORT GV_ExTT
LES
BX,@HF_TBL_VEC
- ~~~ - ~;~~ - - - -~~~~ - -- - - - - - -- ---- - - - ~ - --
IE 0104 R
;
GET 0 I SK PARAMETER ADDRESS
ES:BX -> DRIVE PARAMETERS
ES: ex -> DR I VE PARAMETERS
GV EXiT:
RET
GET _ VEC ENDP
C3
;--- HARDWARE
INT
F I XED 0 I SK
HD_INT
50
IE
E8 0000 E
C6 06 008E R FF
80 20
E6 AD
E8 00
E6 20
IF
FB
889100
CD 15
58
CF
5-128
- - - ~~~; - --
AX
AX, 8000H
IrtCMo 8LOCK+6,ECC MODE
CKDIAX. 1F04H
AH,OltCMD BLOCK+ I
CKDOKCKDERR
AL,BL
CKDERR
PDP
RET
CHECK_DMA
F6 C2 01
74 01
26: C4 IE 0118 R
EB 05
26:
PUSH
MOV
TEST
JZ
MOV
CMP
JA
J8
CMP
JB
CLC
PDP
RET
CKDERR:
~~~
28 CO
8E CO
TEST ALL 8 BITS
MOVE NEXT ERROR BIT TO CARRY
FOUND THE ERROR
KEEP TRY I NG
COMPUTE ADDRESS OF
ERROR CODE
GET ERROR CODE
SAVE ERROR CODE
NO ERR
BAD ADDR MARK, BAD SEEK, BAD CMo, UNDEF ERR
RECORD NOT FND, UNDEF ERR, BAD ECC. BAD-SECTOR
ENDP--
~~~~~ - ~~~- - - - - - ~~~~
50
88
FE>
14
88
3A
GET THE ERROR REG I STER
30 2F
IRQ LEVEL
OS
ST[
"DV
[NT
POP
IRET
-----------
OS
OUT
PDP
""P
14)
NEAR
AX
OUT
INTAOO,AL
.
'2
AX,9100H
I5H
AX
ALL DONE
NON-SPECIFIC END OF
FOR CONTROLLER #2
WAIT
FOR CONTROLLER # 1
08
RETURN FROM
'06/10/85'
INTERRUPT
RE-ENABLE INTERRUPTS
OEV ICE POST
INTERRUPT
INTERRUPT
ENDP
ENDS
END
DISK
(
I NTERRUPT ROUT I NE
DDS
iPHF I NT FLAG, OFFH
AL,EOI I NTBOO, AL
"DV
"DV
HD_INT
30 36 2F 31
3835
PROC
PUSH
PUSH
CALL
76H --
RELEASE MARKER
OFFSET
IBM Persona! Computer MACRO Assembter
KY8D ----- 06/10/85
KEY80ARD 810S
0000
.2
.3
•5
46
10
11
12
13
14
15
16
11
1B
19
BO
BI
B2
B3
54
B5
B6
B1
BB
B9
90
91
92
93
9.
95
96
91
9B
99
100
101
102
103
10.
10 5
106
101
lOB
109
110
III
112
113
"'
PUBLIC
PUBLIC
PU8LI C
PUBLI C
KEYBOARD 10 I
KB INT 1- SND_DATA
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
BEEP:NEAR
005 :NEAR
START I :NEAR
KIO:BYTE
KII :BYTE
KI2:BYTE
KI3:BYTE
KI4:BYTE
KI5:BYTE
K6 :BYTE
KbL:A8S
K7:8YTE
K8:BYTE
K9 :BYTE
KI6
I NT 16 H ------------------------ -----------------------------------------KEYBOARD I/O
THESE ROUT I NES PROV I DE READ KEYBOARD SUPPORT
INPUT
IAH)= DOH
READ THE NEXT ASCII CHARACTER ENTERED FROM THE KEYBOARD,
RETURN THE RESULT I N I AL), SCAN CODE I N I AH) •
IAH)=
SET THE ZERO FLAG TO INDICATE IF AN ASCII CHARACTER IS
AVAILABLE TO BE READ FROM THE KEYBOARD BUFFER.
Izn= I -- NO CODE AVAILABLE
IZF)= 0 -- CODE IS AVAILABLE
IAX)= CHARACTER
I F I ZF) = 0, THE NEXT CHARACTER I N THE BUFFER TO BE READ IS
IN (AX), AND THE ENTRY REMAINS IN THE BUFFER.
(AH)= 02H
RETURN THE CURRENT SHIFT STATUS IN (AU REGISTER
THE BIT SETTINGS FOR THI S CODE ARE INDICATED IN THE
THE EQUATES FOR IItKB_FLAG
OUTPUT
AS NOTED ABOVE, ONLY (AX) AND FLAGS CHANGED
ALL REGISTERS RETAINED
.,
.B
.9
50
51
52
53
54
55
56
51
5B
59
60
61
62
63
6'
65
66
61
6B
69
Ob- 10-85
PAGE 118,121
TITLE KY8D ----- 06/10/85
KEY80ARD 8105
.LI ST
SEGMENT 8YTE PUBL I C
CODE
6
1
B
9
10
II
12
13
I.
15
16
IT
IB
19
20
21
22
23
2.
25
26
21
2B
29
30
31
32
33
3.
35
36
31
3B
39
.0
...,
I-I
Version 2.00
ASSUME
0000
0000
0001
0002
0003
0006
0008
OOOA
OOOC
OOOE
0010
0012
0013
0014
KEYBOARD
10
I
CS:C~DE,DS:DATA
PRoC
F8
STI-
IE
53
E8
OA
74
FE
74
FE
74
58
IF
CF
PUSH
PUSH
CALL
OS
BX
OR
AH,AH
KIB
0000 E
E4
08
CC
45
CC
61
"Z
DEC
"Z
DEC
"Z
POP
POP
IRET
FAR
;»> ENTRY POINT FOR ORG OE82EH
I N1ERRUPTS BACK ON
SAVE CURRENT OS
SAVE BX TEMPORARILY
ESTABLISH POINTER TO DATA REGION
CHECK FOR IAHI= OOH
ASC I I READ
CHECK-FOR IAHI = OIH
ASCI I STATUS
CHECK-FOR I AHI = 02H
SHIFT STATUS
RECOVER REGISTER
O~S
AH
K2
AH
K3
BX
OS
INVALID COMMAND EXIT
READ THE KEY TO FIGURE OUT WHAT TO DO
00 I 5 88 IE OOIA R
0019 38 IE ODIC R
DOlO 15 01
OOIF
0022
0024
0024
0025
0026
0027
0028
002F
0030
0031
0034
003/3
003A
0030
003F
0042
0043
0044
0045
KIB:
88 9002
CD 15
"NE
8X ,Il'BUFFER HEAD
BX,Il'BUFFER-TAIL
KIC
-
GET PO I NTER TO HEAD OF BUFFER
TEST END OF 8UFFER
IF ANYTH I NG IN 8UFFER SK I P INTERRUPT
MOV
AX,09002H
INT
I5H
MOVE IN WA I T CODE & TYPE
PERFORM OTHER FUNCT I ON
Ase I I READ
I NTERRUPTS BACK ON OUR I NG LOOP
ALLOW AN I NTERRUPT TO OCCUR
I NTERRUPTS BACK OFF
GET PO I NTER TO HEAD OF BUFFER
TEST END OF BUFFER
SAVE ADDRESS
SAVE FLAG
GO GET MODE INDICATOR DATA BYTE
GET PREV I OUS 81 TS
SEE I F ANY DIFFERENT
ISOLATE INDICATOR BITS
IF NO CHANGE BYPASS UPDATE
MOV
CMP
K I:
F8
90
FA
88
38
53
9C
E8
8A
32
80
511
NOP
K Ie:
IE OOIA R
IE ODIC R
0587 R
IE 0097 R
08
E3 01
74 04
E8 0549 R
FA
90
58
74 DO
eLI
MDV
CMP
BX ,OPBUFFER HEAD
BX ,Il'BUFFER-T A I L
PUSH
PUSHF
CALL
BX
MOV
XDR
AND
"Z
CALL
-
MAKE LED
8L,Il'K8 FLAG 2
BL,AL BL,KB LEOS
KIA
SND_LEDI
CLI
KIA:
POPF
POP
"Z
BX
KI
GO TURN ON MODE INDICATORS
D I SA8LE INTERRUPTS
RESTORE FLAGS
RESTORE ADDRESS
LOOP UNT I L SOMETH I NG I N BUFFER
0047 88 01
0049 E8 007F R
004C 89 IE OOIA R
MOV
K.
MOV
\!!I8UFFER _HEAD, 8X
GET SCAN CODE AND ASC I I CODE
MOVE POINTER TO NEXT POSITION
STORE VALUE IN VARIABLE
0050 58
0051 IF
0052 CF
POP
POP
BX
OS
RECOVER REGISTER
RECOVER SEGMENT
RETURN TO CALLER
CALL
IRET
ASCI I
0053
0053
0054
0058
005C
005E
005F
0060
00b3
00b7
0069
OObC
AX, [8X]
STATUS
K2:
FA
88
38
8B
9C
50
E8
8A
32
80
74
CLI
IE OOIA R
IE OOIC R
01
MOV
CMP
MDV
PUSHF
PUSH
CALL
0581 R
IE 0097 R
08
E3 07
03
006E E8 0549 R
0011 5B
MDV
XDR
AND
"Z
CALL
SK2:
POP
ex ,Il'BUFFER HEAD
8X,Il'BUFFER-TA JL
AX, [BX]
-
J NTERRUPTS OFF
GET HEAD PO INTER
I F EQUAL I Z= 1 I THEN NOTH I NG THERE
AX
MAKE LED
8L,Il'KB FLAG 2
BL,AL 8L ,K8 LEOS
SK2
-
SAVE FLAGS
SAVE CODE
GO GET MODE INDICATOR DATA 8YTE
GET PREV 10US BITS
SEE t F ANY 0 I FFERENT
ISOLATE INDICATOR 81TS
IF NO CHANGE BYPASS UPDATE
SND LEDI
AX -
GO TURN ON MODE INDICATORS
RESTORE CODE
KYBD
5-129
I BM Persona I Computer MACRO Assemb I er
KYBD ----- 06/10/85
KEYBOARD BIOS
115
116
117
116
119
120
121
122
123
124
125
126
127
126
129
13'
131
132
133
134
135
136
137
136
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
0072
0013
0074
0075
0076
90
FB
56
1-2
06-10-85
ion 2.00
POPF
STI
POP
POP
RET
IF
CA 0002
RESTORE FLAGS
I NTERRUPTS BACK ON
RECOVER REG I STER
RECOVER SEGMENT
THROW AWAY FLAGS
8X
as
2
SHIFT STATUS
0079
0079 AO 0017 R
007C 5B
0070 IF
007E CF
007F
K3:
AL,IrtKB_FLAG
8X
MOV
POP
POP
KEYBOARD
IRET
10 I
-
GET THE SHIFT STATUS FLAGS
RECOVER REG I STER
RECOVER REG I STERS
RETURN TO CALLER
as
-
ENOF
I NCREMENT A BUFFER PO INTER
007F
007F
0080
0081
0085
0087
0089
008B
008C
K4
FROC
43
43
3B 1E 0082 R
75 04
8B IE 0080 R
NEAR
8X
8X
BX,KB FLAG 3, KBX
@KS-FLAG-3,SET NUM LK
DO EXT
-@KB FLAG,NUM STATE
SND-lED
SHORT EX I T
INDICATE KBX WAS FOUND
SHOULD WE SET NUM lOCK?
EXIT IF NOT
FORCE NUM LOCK ON
GO SET THE NUM LOCK [ND[CATOR
TEST
JZ
'PK8 FLAG 3 I LC HC
NOT-LC He
-
WAS THE lAST CHARACTER A HIDDEN CODE
JUMP IF NOT
OR
TEST
JZ
OR
26 0096 R FD
52
05
C4 80
5B
BF 00E8 R
B9 OOOA
F2/ AE
75 54
F6 06 0018 R 08
7407
80 26 0018 R F7
A HIDDEN CODE
IS THIS A BREAK CODE
I GNORE BREAK ON REST OF THESE KEYS
EB 43
F6 06 0017 R 08
74 DE
F6 06 0017 R 04
74 35
3C 53
7531
E9 0300 R
TEST
JZ
TEST
JZ
eMP
JNE
JMP
@KB FLAG,ALT SHIFT
NOT-AL T
@KB-FLAG,CTL SH [FT
EXJT
Al,DEL M
EXIT
K29
F6 06 0017 R 04
75 15
3C 52
75 OE
NOT Al T:
TEST
JNZ
eMP
JNE
'PKB FLAG, CTL SH I FT
eTL -ON
AL,TNS M
N_INS -
8A
84
A8
75
E9
SCAN FOR THE KEY
GO ON I F NOT FOUND
ARE WE [N HOLD STATE?
;
EXIT HOLD STATE
IGNORE TH I S KEY
;----0180
0182
0184
0186
0188
018B
018B
018E
01 8E
0I9I
0191
0194
0196
INDICATE
[T WAS KBX
THE LAST CHARACTER WAS
013A
013F
0141
0143
0146
0 I 48
0148
0148
014E
0150
0152
0157
0159
015E
015E
0160
0160
0165
0167
016C
016E
0170
0172
1NT 09H
217
215
218
216
86
21.
TABLE OF KEYPAD CURSOR & CONTROL KEYS
28'
285
2%
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
; IS TH I S AN OVERRUN CHAR
; NO, TEST FOR SH I FT KEY
; BUFFER_FULL_BEEP
AL, KB OVER RUN
K 16
K62
TH I S CODE CONTA I NS THE KBX SUPPORT FOR
236
237
0009
238
00D7
239
OODA
240
00D8
241
0056
242
0006
2.3
244
0052
245
0053
246
0048
247
0040
248
0048
249
0050
250
0049
251
0051
252
0047
253
004F
25.
255
0085
256
OOEO
257
258
259
260
OOEB 48 50 52 53 4B 40
261
OOF! 49 51 47 4F
262
= OOOA
263
264
00F5
265
00F5 24
266
00F7 OE
267
00F8 07
268
269
00F9 F6 06 0096 R CO
270
OOFE 74 33
271
0100 79 11
272
0102 80 FC AB
273
0105 75 05
274
010780 OE 0096 R 40
275
0 I OC
276
0 I OC 80 26 0096 R 7F
277
0111 EB 48
278
279
0113
280
0113 80 26 0096 R BF
281011880FC41
282
011B 75 41
283
286
287
288
289
290
291
292
293
294
295
1-3
06-10-85
VersIon 2.00
C4
80
80
03
028F R
-
SPECI AL HANDL I NG FOR
[S ALT DOWN?
HOW ABOUT CTRL?
I GNORE ALL IF ONLY AL T DOWN
WAS IT THE DELETE KEY?
[GNORE IF NOT
GO 00 THE CTL, AL T I DEL RESET
IS CTL DOWN?
SPEC I AL CASE I F SO
IS THIS THE INSERT KEY?
INSERT KEY
MOV
MOV
TEST
JNZ
JMP
AL,AH
AH,INS_ SH[FT
AL,80H
B e
K22
JMP
K24
HANDLE BREAK
K,9
HANDLE
Cl,5
EX[T
K42
WAS [T INS, DEL, UP OR DOWN?
IGNORE IF SO
GO HANDLE CTRL CASE
RECOVER SCAN CODE
AH = MASK FOR INSERT
WAS TH I S A BREAK CODE?
;
GO HANDLE
[NSERT SH I FT
B e,
E9 0202 R
E9 0453 R
N- INS:
&
IGNORE NUMLOCK
eTL ON:
80 F9 05
TT OD
E9 0401 R
-
eMP
JA
JMP
KYBD
5-131
IBM Pel"'sonel Computel'" MACRO Assemb leI'"
KYBO ----- 06/10/8& KEYBOARD BIOS
343
344
345
346
34'
348
34'
350
351
35.
3.3
354
355
356
3.'
358
359
360
361
36'
363
364
365
366
36'
368
369
310
0199
0199
019C
a 19E
0lA3
0lA3
0lA6
011.6
0lA9
OIAB
011.0
OlAF
OlAF
0lB2
0lB4
0lB6
0lB6
0lB9
OIBB
OIBE
OICO
0lC5
0lC7
OICC
OICE
OICE
80 FC EO
75 08
80 OE 0096 R 03
E9 02EE R
80
75
BI
EB
FC 09
04
85
07
80
14
80
74
F6
FC
E8
FC
E3
06
74 07
80 26
E8 05
06-10-85
NOT LC HC:
- CMP
"NE
OR
EXITI
"MP
NOT CUR:
CMP
"NE
MOV
"MP
80 FC OA
75 43
BI 86
eMP
"NE
MOV
07
eMP
"E
eMP
08
~~ST
0018 R 08
"Z
ANa
0018 R F7
1-4
Vt!l"'slon 2. 00
"MP
I LAST CHARACTER WAS NOT A HIDDEN CODE
I IS THIS CHARACTER A HIDDEN CODE?
AH,HC
~~~:~~:G_3ILC_~C+KBX
; SET LAST CHAR WAS A HIDQEN CPDE & KBX
•••
; THROW AWAY THI S CODE
~HF~~ I_M
WASITFI11
HANDLE IF SO
SET BASE FUNCTION II
CLIFUNCII
SHORT DO_FN
AH,FI2 M
T SYS KEY
CL,FUiiicll+1
WAS IT F12?
GO TEST FOR SYSTEM KEY
SET BASE FUNCTION 12
~~i~II_B
IS THIS A BREAK CODE
I GNORE BREAK CODES
IS THIS A BREAK CODE
I GNORE BREAK CODES
ARE WE IN HOLD STATE?
:~i~12_B
~K~L~~AG_I,HOLD_STATE
;~~~~L~~T+ ,NOT HOLD_STAT~
• EXlT HOLD STATE
IGNORE TH I S KEY
8A EI
MOV
~HICL
F6 06 0017 R 08
74 05
80 C4 06
EB 16
"Z
AOO
TEST
;K~f[L~G, AL T_ SH I FT
I
; CNVT TO ALT FN 11-12
"MP
AR,6
SHORT SET _FN
F6
74
80
EB
"Z
AOO
311
31.
313
314
315
316
3TT
318
31.
380
3.,
38.
383
384
385
38.
38'
388
38.
3.0
3"
3 ••
3.3
3.4
3.5
3'6
3"
3'8
3"
400
401
40.
403
400
405
40.
40'
408
40.
410
411
41.
4i3
41.
415
416
4IT
418
41.
4.0
.21
4"
4.3
4.4
4~5
•••
421
4.8
4"
430
431
43.
433
434
43.
436
431
438
43.
440
441
44.
443
444
445
44.
...
44,7
448
450
451
45.
453
454
455
45.
0100
0105
0107
aiDA
OIOC
OloC
aiEl
OlEa
011;6
0lE8
0lE8
OlEO
OIEF
0lF2
0lF2
OIF'1-
06 0017 R 04
05
C4 04
OA
F6 06 0017 R 03
7~ 03
80 C402
2A co
E9 04BA R
BO
E8
88
FB
CO
E9
;
TEST
;~~_~~AG,LEfT_SHIFT+RIGHT_SHIFT
CN~T
TO CTRL FN 11-12
~
IS EITHER SHIFT ON?
AH,Z
; CNVT TO SHIFT FN 11-12
SUS
AL,AL
"MP
.51
I FORCE PSEUDO SCAN CODE
I PUT I T I NTO BUFFER
TEST FOR SYSTEM KEY
"NZ
TEST
"NZ
TEST
IN:?
0207 80 OE 0018 R 04
020C 80 20
020E E6 20
022A
022C
022F
0232
0233
0235
0238
0238
023B
023E
0240
0242
0244
; ARE WE IN CTRL
AR,4
SHORT SET _FN
T SYS KEY,
CMP
0200 F6 06 0018 R 04
0205 75 17
BO
E8
B8
FB
CO
E9
;~~R~LAG,CTL_SH 1FT
"Z
AOO
OIFB F6 C4 80
OIFE 75 21
0210
0212
0215
0218
0219
021B
021E
021E
0221
0221
0226
0228
TEST
"MP
SET_FNI
1----0lF7
01F7 3C 54
0lF9 75 30
ARE WE IN ALT
OR
MOV
OUT
I.E
0595 R
8500
MOV
CALL
MOV
STI
INT
15
02F8 R
KI6B:
E9 02EE R
KI6C;
80 26, 0018 R FB
BO 20
E6 20
CHECK IF TI-I I S A BREAK CODE
00 NOT TOUCH SYSTEM INDICATOR IF TRUE
~~:BFLAG_I,SYS_SHIFT
SEE I FIN SYSTEM KEY HELD DOWN
IF Y.ES, DON'T PROCESS SYSTEM INDICATOR
IltKB FLAG I,SYS SHIFT
ALIEbl
INTAOO,AL
INDICATE SYSTEM KEY DEPRESSED
END' OF I NTERRUPT COMMAND
SEND COMMAND TO I NTERRUPT CONTROL PORT
I NTERRUPT-RETURN-ND-EO I
I NSURE KEYBOARD I S ENABLED
EXECUTE ENABLE
FUNCTION VALUE FOR MAKE OF SYSTEM KEY
MAKE SURE INTERRUPTS ENABl.ED
USER INTERRUPT
END PROCESS I NG
AL.ENA KBD
SHIP 1"1'
AX,oe500H
J~P
15H
K27A
K2~
AND
:~~E~~AG_I.NOT SYS_SHIFTI TURN OFF SHIFT KEY HELD DOWN
I GNORE SYSTEM KEy
OUT
INTAOO,AL
MOV
~~i~N~1'KBD
CALL
15
02F8 R
I SIT THE SYSTEM KEY?
CONTINUE IF NOT
AH I 080H
KI6C
"MP
MOV
AE
0595 R
850 I
~~6!YS_KEY
MOV
A~.oe50IH
STI
INT
"MP
15H
K27A
END 'OF INTERRUPT COMMAND
SEND COMMAND TO I NTERRUPT CONTROL PORT
I NTERRUPT-RETURN-NO-EO I
1NSURE KEYBOARD I S ENABLED
EXECUTE ENABLE
FUNCTION VALUE FOR BREAK Of SYSTEM KEY
MAKE SURE I NTERRUPTS ENABLED
USER INTERRUPT
IGNORE ·SYST.EM KEY
KI6AI
BF 0000 E
B9 0000 E
F21 I.E
81. C4
74 03
E9 020A R
MOV
MOV
REP,NE
MOV
JE
"MP
01 ,OFFSET K6
CX, OFFSET K6L
SCASB
AL,AH
SHIFT KEY TABLE
LENGTH
LOOK THROUGH THE TABLE FOR A MATCH
RECOVER SCAN CODE
JUMP I F MATCH FOUND
IF NO MATCH, THEN SHIFT NOT FOUND
.IT
•• 5
SH I FT KEY FOUND
0247
0247
024B
0250
0252
d254
81 EF 0001 E
!E I 81. A~ 0000 E
1.8 SO
74 02
EB 50
0256
0256 80 FC 10
0259 73 07
SUS
MOV
TEST
"Z
"MP
;----KI7C:
eMP
025B 08 26 00 17 R
025F E9 02EE R
0262
0262 F6 06 0017 R 04
0267 75 71
0269 3C 52
5-132
KYBD
AH, SCROLL SH I FT
KI8
-
PLAIN SHIFT KEY,
OR
"MP
1-----
AD,JUST PTR TO SCAN CODE MATCH
GET MASK INTO AH
TEST FOR BREAK KEY
; BREAK SH I FT FOUND
1 CONTINU~
-
DETERMINE SET OR TOGGLE
"AE
;-----
01 ,OFFSET K6+1
AH,CSIK7(01 J
AL.SOH
KI7C
SHORT K23
;
I F SCROLL SH I FT OR ABOVE
SET SHIFT ON
TURN ON SHIFT BIT
INTERRUPT_RETURN
~KBJLAG,AH
'.5
TOGGLED SHIFT KEY, TEST FOR
1ST t.1AKE OR NOT
KI6s
TEST
"NZ
~~~_FLAG, CTL_SHIFT
eMP
AL,
INS_KEY
SHIFT-TOGGLE
CHECK CTL SHIFT STATE
JUMP IF' CTL· STATE
I
CHECK FOR
INSERT KEY
~
TOGGLE KEY
IBM Personal Computer MACRO Assembler
KYBO ----- 06/10/85
KEYBOARD BIOS
457
458
459
•• 0
461
462
463
464
•• 5
466
467
468
469
470
471
026B 75 22
0260 F6 06 0017 R 08
0272 75 66
0274
0279
027B
0280
0282
0282
0285
0288
0288
0280
.. ,
028F
028F
0293
0295
0297
0297
029B
TEST
•••
497
498
499
500
50 I
TEST
B8 5230
E9 048A R
MOV
"MP
K21,
F6 06 0017 R 03
74 F3
TEST
"Z
50Z
503
84 26 0018 R
74 02
EB 57
SHIFT TOGGLE KEY HIT; PROCESS IT
I S KEY ALREADY DEPRESSED
GO IF NOT
.JUMP I F KEY ALREADY DEPRESSED
OR
XOR
lIK8 FLAG I, AH
OKB::FLAG-;-AH
INDICATE THAT THE KEY IS DEPRESSED
TOGGLE THE SHIFT STATE
~~2:~B_FLAG_1
TOGGLE LED I F CAPS OR NUM KEY DEPRESSED
TEST
"Z
50
E8 0536 R
58
AX
PUSH
CALL
POP
SND LED
CMP
AL,INS KEY
K26
-
AX -
SAVE SCAN CODE AND SHIFT MASK
GO TURN MODE INDICATORS ON
RESTORE SCAN CODE
K22BI
3C
75
88
E9
52
41
5200
048A R
"NE
MOV
"MP
~~lINS_KEY'H
CMP
"AE
NOT
ANa
CMP
"NE
;----0019 R
00
26 0019 R
00
74 IF
E9 0493 R
"E
"MP
0202
0202 F6 04
0204 20 26 0018 R
0208 EB 14
K24=
020A
020A
02DC
020E
02E3
02E5
02E7
02E9
K251
51.
51'
NOT
ANa
"MP
;-----
AH, SCROLL SH I FT
K24
-
AH
lIKB FLAG,AH
AL.AL T KEY+80H
K26
-
ALTERNATE SHIFT KEY RELEASED,
MOV
MOV
MOV
CMP
AO
B4
88
3C
TEST FOR I ST MAKE OF I NSERT KEY
.JUMP I F NOT I NSERT KEY
SET SCAN CODE INTO AH, 0 INTO AL
PUT I NTO OUTPUT BUFFER
BREAK SH I FT FOUND
K23=
80 FC 10
73 I A
F6 04
20 26 00 I 7 R
3C B8
75 2C
513
514
515
516
517
SHORT K26
K22AO=
;-----
02C2
02C5
02C7
02CB
02CD
02CF
"Z
"MP
TEST
08 26 0018 R
30 26 0017 R
50'
505
50.
507
508
509
510
511
512
I NUMERIC ZERO, NOT INSERT KEY
; PUT OUT AN ASC I I ZERO
; BUFFER FILL
; MIGHT BE NUMERIC
lIKB FLAG, LEFT SHIFT+ RIGHT SHIFT
K20,JUMP NUMERIC, NOT INSERT
AX, 5230H
K57
K22:
;-----
02B3
02B3
02B6
02B8
028A
OZBE
02CO
,JUMP I F NOT I NSERT KEY
CHECK FOR AL TERNA TE SH I FT
,JUMP IF AL TERNA TE SH I FT
TEST
K20:
•• 5
•••
ALT_SHIFT
"NZ
029F F6 C4 70
02A2 74 05
02A4
02A5
02A8
02A9
02A9
02AB
02AD
02BO
~~~_FLAG,
"Z
•• 5
486
487
488
489
490
491
492
493
K22
"NZ
F6 06 0017 R 20
75 00
F6 06 0017 R 03
74 00
•• 0
•• 2
483
484
06-10-85
"NZ
.,2
473
474
475
476
477
478
479
1-5
Version 2.00
AL,.ALT INPUT
AHIO
PAL T INPUT ,AH
AL,O-
K2.
K5.
AH
lIKB FLAG I, AH
SHORT K26
BREAK-SHI FT-FOUND
IS THI S A TOGGLE KEY
YES, HANDLE BREAK TOGGLE
INVERT MASK
TURN OFF SHIFT BIT
IS THIS ALTERNATE SHIFT RELEASE
INTERRUPT_RETURN
GET THE VALUE
INTO BUFFER
SCAN CODE OF 0
ZERO OUT THE F I ELO
WAS THE I NPUT=O
I NTERRUPT RETURN
IT WASN'T-;- SO PUT IN BUFFER
BREAK-TOGGLE
INVERT MASK
INDICATE NO LONGER DEPRESSED
INTERRUPT_RETURN
TEST FOR HOLD STATE
520
521
522
523
524
525
526
527
528
3C
73
F6
74
3C
80
10
06 0018 R 08
IE
45
74 05
80 26 0018 R F7
CMP
"AE
TEST
"Z
CMP
"E
ANa
AL,80H
K26
NO-SH 1FT-FOUND
TEST FOR BREAK KEY
NOTH I NG FOR BREAK CHARS FROM HERE ON
~~~_FLAG_I,HOLD_STATE
~~~N~~ ~~O~~~D T~~~T~F
NOT
AL,NUM KEY
K26
I CAN'T END HOLD ON NUM LOCK
OKB_FLAG_I,NOT HOLD_STATE
; TURN OFF THE HOLD STATE BIT
52.
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
02EE
02EE
02EF
02FI
02F3
02F3
02F5
02F8
02F8
02F9
02FA
02FB
02FC
02FD
02FE
02FF
0300
0301
0302
0303
0303 F6 06 00 I 7 R 08
0308 75 03
030A E9 03A5 R
5 ••
510
POP
POP
POP
POP
POP
POP
POP
POP
POP
IRET
E5
DISABLE INTERRUPTS
RESTORE REG I STERS
NOT IN
HOLD STATE
TEST
"NZ
G!lKB FLAG.ALT SHIFT
K29-
"MP
K3.
CLI
OS
01
51
OX
CX
BX
AX
BP
RETURN,
K28=
1-----
551
55.
5 ••
AL,ENA KBD
SHIP_IT
K27A=
FA
07
IF
5F
5E
5A
59
5B
58
50
CF
1-----
0300
0300
0312
03 I 4
0316
0318
031 A
031 C
031 E
MOV
CALL
INTERRUPT-RETURN
TURN OFF INTERRUPTS
END OF I NTERRUPT COMMAND
SEND COMMAND TO I NTERRUPT CONTROL PORT
I NTERRUPT-RETURN-NO-EO I
I NSURE KEYBOARD I S ENABLED
EXECUTE ENABLE
K27=
55.
559
560
561
562
563
564
565
566
567
AL,EOI
INTAOO,AL
CLI
BO AE
E8 0595 R
5 ••
550
551
552
553
554
555
MOV
OUT
K26=
FA
BO 20
E6 20
TEST
OKB FLAG,CTL SHIFT
K31AL,NUM KEY
K26
-
"NE
K3I
"Z
CMP
"E
CMP
"E
CMP
;-----
NO-HaLO-STATE
ARE WE IN ALTERNATE 5H I FT
,JUMP IF ALTERNATE SH I FT
.JUMP I F NOT ALTERNATE
TEST FOR CONTROL KEY AND RESET KEY SEQUENCE
K29=
F6 06 0017 R 04
74 39
3C 45
74 06
3C 46
74 02
3C 53
75 20
INTERRUPTS ON WITH FLAG CHANGE
~~6 SCROLL_KEY
AL,DEL_KEY
(CTL AL T DEL)
TEST-RESET
ARE WE I N CONTROL 5H I FT ALSO
NO RESET
CHECK FOR I NV AL I 0 NUM LOCK KEY
THROW AWAY IF (ALT-CTL) +NUM LOCK
CHECK FOR I NV AL I 0 SCROLL LOCK KEY
THROW AWAY IF (ALT-CTL) +SCROLL LOCK
CTL-ALT STATE. TEST FOR DELETE-KEY
NO_RESET
CTL-ALT-DEL HAS BEEN FOUND
KYBD
5-133
IBM Personal Computer MACRO Assembler
KYBO ----- 06/10/85 KEYBOARD BIOS
571
572
0320 C7 06 0072 R 1234
0326 E9 0000 E
0329
0329 52 4F 50 51 4B 4C
032F 40 47 48 49
57.
579
580
581
582
583
0333
0339
033F
0345
0348
10
16
20
26
3I
11
17
21
2C
32
12
18
22
20
0340
0340
034F
035 I
0353
3C
75
80
E9
39
05
20
048A R
13
19
23
2E
14
IE
24
2F
15
IF
25
30
5 ••
5.5
5 ••
587
588
589
590
591
5'2
5'3
5"
;-----
1----SF 0329 R
B9 OOOA
F2/ AE
75 13
81 EF 032A R
AO 0019 R
B4 OA
F6 E4
03 C7
A2 0019 R
E9 02EE R
610
611
612
613
614
615
616
0373
0373
0378
037B
0370
037F
0381
C6 06 00 I'll R 00
B9 OOIA
F2/ AE
75 05
BO 00
E9 048A R
620
621
622
623
62...
625
626
627
.2 •
• 2.
•••
651
652
653
654
655
656
.5..5.
"NE
MOV
"MP
.
.7 •
K36;
E9 02EE R
K371
3C
73
BB
E9
47
F9
0000 E
O"'E I R
.7.
.7'
680
681
682
683
68...
01 ,OFFSET K30+ I
AL,GlIALT INPUT
AH,IO -
AH
AX,DI
~~~T_INPUT,AL
~~~~6INPUT ,0
SCASB
•••
AL,O
<57
AL,2
"B
CMP
.35
"AE
•• 5
"AE
"MP
CMP
"AE
MOV
"Me
ADO IN THE LATEST ENTRY
STORE IT AWAY
THROW AWAY THAT KEYSTROKE
NO-AL T-KEYPAD
ZERO ANY PREVIOUS ENTRY INTO INPUT
(01). (E5) ALREADY POINTING
LOOK FOR MATCH I N ALPHABET
NOT FOUND, FUNCT I ON KEY OR OTHER
; ASC I I CODE OF ZERO
I PUT IT IN THE BUFFER
AL,''''
AH,I18
AL,O
<.7
AL T-TOP-ROW
KEY WITH ' I ' ON IT
NOT ONE OF INTERESTING KEYS
IS IT IN THE REGION
AL T-FUNCT I ON
CONVERT PSEUDO SCAN CODE TO RANGE
INDICATE AS SUCH
BUFFER_FILL
AL,59
<.,
.2.
AL,71
•••
BX,OFFSET KI3
<••
AL T-FUNCTION
TEST FOR IN TABLE
AL T-CONT I NUE
CLOSE-RETURN
I GNORE THE KEY
AL T-CONT I NUE
IN KEYPAD REGION
IF SO, IGNORE
AL T SH I FT PSEUDO SCAN TABLE
TRANSLATE THAT
NOT IN ALTERNATE SHIFT
K381
TEST
1----1----03AC
03AE
03BO
0384
0388
038C
3C
75
88
89
89
C6
46
10
IE
IE
IE
06
0080
00 I A
001 C
007 I
1----03C I
03C3
03C6
03C8
03CA
80
E8
CD
28
E9
AE
0595 R
18
CO
0 ... 8A R
03CO
03CO 3C 45
03eF 75 26
0301 80 DE 0018 R 08
BO
E8
BO
E6
AE
0595 R
20
20
030F
03E...
03E6
03E9
03EC
80
74
8A
AO
EE
3E 0049 R 07
07
03015
0065 R
KYBD
; NOT-CTL-SHIFT
~~9 SCROLL_KEY
TEST FOR BREAK
NO-BREAK
RESET BUFFER TO EMPTY
OBIOS_BREAK,80H
TURN ON .BIOS_BREAK BIT
::~~~~=-~;~~::~
ENABLE KEYBOARD
SUB
AL,ENA KBo
SHIP 1"1'
1BH AX,AX
"MP
.57
CMP
"NE
OR
-----
I NOT-ALT-SHIFT
I ARE IE I N CONTROL SH I FT
eX,OBUFFER START
K39:
~~;NUM_KEY
OKB_FLAG_I,HOLD_STATE
; ENABLE KEYBOARD
; EXECUTE ENABLE
BREAK I NTERRUPT VECTOR
PUT OUT DUMMY CHARACTER
BUFFER_FILL
NO-BREAK
LOOK FOR PAUSE KEY
NO-PAUSE
TURN ON THE HOLD FLAG
ENABLE KEYBOARD
MOV
CALL
MOV
OUT
;-----
5-134
.KB_FLAG,CTL_SHI FT
•••
CONTROL SHIFT, TEST SPECIAL CHARACTERS
TEST FOR BREAK AND PAUSE KEYS
MOV
CALL
INT
;
0306
0308
030B
0300
"Z
CMP
"NE
MOV
MOV
MOV
MOV
R
R
R
R 80
"
."
•••
AL T-KEY-PAO
ALT-INPUT-TABLE
LOOK FOR ENTRY US I NG KEYPAD
LOOK FOR MATCH
NO AL T KEYPAD
Ol-NOW-HAS ENTRY VALUE
GET THE CURRENT BYTE
MULTIPLY BY 10
LOOK FOR TOP ROW OF ALTERNATE SH I FT
CMP
.72
673
674
675
676
01 ,OFFSET K30
CX,IO
SCASB
K351
•• 5
666
667
6615
669
.57
LOOK FOR SUPERSHIFT ENTRY
MOV
MOV
REPNE
3C 3B
73 03
.57
660
661
662
663
66...
NO-RESET
; TEST FOR SPACE KEY
NOT THERE
; SET SPACE CHAR
I BUFFER FILL
I
,
TRANSLATE ALTERNATE SH I FT PSEUDO SCAN CODES
03A5
03A5 F6 06 0017 R 04
03AA 74 62
.5.
SUB
MOV
MOV
MUL
AOO
MOV
"MP
AOD
MOV
"MP
•• 2
•• 3
6......
6 ... 5
646
.••••••.,
A-Z TYPEIR I TER CHARS
LOOK FOR KEY PAD ENTRY
CMP
0394
0394
0396
0398
0398
039B
039B
0390
039F
03A2
.,
AL,'
K3"'1
02
OC
OE
08
C... 76
00
0 ... 8A R
631
632
633
63'"
635
636
637
638
639
6 ... 0
.
AL,57
.32
K331
3C
72
3C
73
80
BO
E9
10 NUMBERS ON KEYPAD
I
I
MOV
MOV
REPNE
"NE
;-----
I
IN ALTERNATE SHIFT, RESET NOT FOUND
K321
;-----
038 ...
0384
0386
0388
038A
038C
038F
0391
ALT-INPUT-TABLE
LABEL
BYTE
08
82,19,150,151,75,76
DB
77,71,72,73
SUPER-SHIFT-TABLE
08
16,17,18,19,20,21
08
22,23,24,25,30,31
DB
32,33,34,35,36,37
~
38,«,45,46,47,415
DB
49,50
CMP
"NE
MOV
"MP
0356
0356
0359
035C
035E
0360
0364
0367
0369
036B
0360
0370
.,.."
,-----
; SET FLAG FOR RESET FUNCT J ON
I ..JUMP TO POWER ON 0 I AGNOST I CS
K31;
595
596
597
598
599
600
60 I
602
603
604
605
606
•• 7
•••
•••
1-.
06-10-85
MOV
"MP
573
574
575
576
577
Version 2.00
;~i~N~fKBO
AL,Eal
INTAOO,AL
ENABLE KEYBOARD
EXECUTE ENABLE
END OF I NTERRUPT TO CONTROL PORT
ALLOW FURTHER KEYSTROKE INTERRUPTS
DURING PAUSE INTERVAL, TURN COLOR CRT BACK ON
CMP
~~~T_MODE, 7
MOV
OUT
DX,03D8H
AL, GlICRT MODE SET
DX,AL -
"E
MOV
15TH I 5 THE MONOCHROME CARD
YES, NOTH I NG TO DO
PORT FOR COLOR CARD
GET THE VALUE OF THE CURRENT MODE
SET THE CRT MOOE, SO THAT CRT I 5 ON
IBM Personal Computer MACRO Assembler
KY8D ----- 06/10/85
KEY80ARO 810S
1-7
Version 2.00
06-10-85
685
686
SUSPEND SYSTEM OPERATION
(LOOPl
TILL NEXT KEY CLEARS HOLD STATE FLAG
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
03EO
03EO F6 06 0018 R 08
03F2 75 F9
K40:
03F4 E9 02FB R
;
03F7
03F7
03F9
03F8
03FE
-----
TEST
JNZ
PK8 FLAG I ,HOLD STATE
K40
-
PAUSE-LOOP
CHECK HOLD STATE FLAG
LOOP UNT I L FLAG TURNED OFF
JMP
K27A
INTERRUPT _RETURN_NO_EO I
TEST SPEC I AL CASE KEY 55
NO-PAUSE
K41 :
3C
75
88
E9
37
06
7200
048A R
CMP
JNE
MOV
JMP
AL,55
K42
AX,114·H
K57
NOT-KEY-55
START/STOP PRINTING SWITCH
BUFFER _F I LL
SET UP TO TRANSLATE CONTROL SHIFT
0401
0401 88 0000 E
0404 3C 38
0406 72 7E
K42:
0408 88 0000 E
0408 E9 04E 1 R
MOV
CMP
JB
ax, OFFSET K8
AL,59
K56
MOV
JMP
BX,OFFSET K9
K63
NOT-KEY-55
SET UP TO TRANSLATE CTL
IS IT IN TABLE
YES, GO TRANSLATE CHAR
CTL -T A8LE- TRANSLATE
CTL TABLE SCAN
TRANSLATE_SCAN
711
712
713
714
715
716
717
718
71.
NOT I N CONTROL SH I FT
040E
040E
0410
0412
0417
K44:
3C 47
73 33
F6 060017 R 03
74 62
CMP
JAE
TEST
JZ
; -----
720
AL,11
K48
;
NOT-CTL-SHIFT
TEST FOR KEYPAD REG I ON
HANDLE KEYPAD REGION
~~:_FLAG,LEFT_SHIFT1-RIGH~_~~~~TFOR
SHIFT STATE
UPPER CASE, HANDLE SPECIAL CASES
721
722
723
724
725
726
727
728
72.
0419
0418
0410
0420
3C
75
88
E8
OF
05
OFOO
68
0422
0422 3C 37
042475 10
730
735
736
737
738
73.
740
741
742
743
744
745
746
747
748
74.
750
0426
0428
0428
0420
042F
0430
0432
0433
80
E8
80
E6
55
CO
50
E9
AE
0595 R
20
20
0436
0436
0438
043A
0430
3C
72
88
E9
38
06
0000 E
04E 1 R
AL,I5
K45
AX,IS·H
SHORT K51
BACK TAB KEY
NOT-BACK-TAB
SET PSEUDO SCAN CODE
BUFFER _F I LL
CMP
JNE
AL,55
K46
NOT-BACK-TAB
PR I NT SCREEN KEY
NOT -PR I NT - SCREEN
K45:
; -----
731
732
733
734
CMP
JNE
MOV
JMP
ISSUE INTERRUPT TO
MOV
CALL
MOV
OUT
PUSH
INDICATE PRINT SCREEN FUNCTION
AL,ENA KBO
SHIP IT
AL,EOI
INTAOO,AL
BP
05
lNT
05H
02F3 R
POP
JMP
BP
K27
I NSURE KEYBOARD I S ENABLED
EXECUTE ENABLE
END OF CURRENT INTERRUPT
SO FURTHER TH I NGS CAN HAPPEN
SAVE PO INTER
ISSUE PR I NT SCREEN INTERRUPT
RESTORE PO INTER
GO BACK WITHOUT EOI OCCURRING
CMP
JB
MOV
JMP
AL,S9
K47
BX,OFFSET K12
K63
NOT-PR I NT-SCREEN
FUNCT I ON KEYS
NOT-UPPER-FUNCT I ON
UPPER CASE PSEUDO SCAN CODES
TRANSLATE_SCAN
MOV
JMP
BX,OFFSET K 11
SHORT K56
NOT-UPPER-FUNCT I ON
POINT TO UPPER CASE TABLE
OK, TRANSLATE THE CHAR
K46:
0440
0440 88 0000 E
0443 E8 41
K47:
0445
0445
044A
044C
0451
K48:
751
752
753
754
755
756
757
758
KEYPAD KEYS,
F6
75
F6
75
06 0017 R 20
21
06 0017 R 03
21
TEST
...JNZ
TEST
...JNZ
MUST TEST NUM LOCK FOR DETERMINATION
; KEYPAO-REG I ON
@K8_FLAG,NUM_STATE
; ARE WE IN NUM LOCK
K52
; TEST FOR SURE@K8 FLAG,LEFT SHIFT+RIGHT SHIFT; ARE WE IN SHIFT STATE
K53-IF SHIFTED, REALLY NUM STATE
75.
760
761
762
763
764
765
766
767
768
76.
770
771
772
773
774
775
776
777
778
77.
780
781
782
783
784
785
786
787
BASE CASE FOR KEYPAD
0453
0453
0455
0457
0459
0458
0450
0460
0463
0463
0466
0466
0466
0468
K49:
3C
74
3C
74
2C
88
E9
4A
DC
4E
00
47
0000 E
04E3 R
793
794
795
796
7.7
798
AL,74
SPEC I AL CASE FOR A COUPLE OF KEYS
MINUS
KSO
AL,78
K51
MOV
JMP
AL,71
8X,OFFSET K15
K64
CONVERT OR I GIN
8ASE CASE TABLE
CONVERT TO PSEUDO SCAN
MOV
JMP
AX, 74-H+' -,
SHORT K57
MINUS
8UFFER _F I LL
MOV
JMP
AX,78-H+'+'
SHORT K57
SUB
K50:
88 4A20
E8 22
K51:
88 4E28
E8 10
MIGHT BE NUM LOCK,
0460
0460 Fb 06 0017 R 03
0472 75 OF
K52:
0474
0474 2C 46
0476 88 0000 E
0479 E8 08
K53:
0478
0478
0470
047F
0481
K54:
788
78.
7'0
7"
792
8ASE-CASE
CMP
JE
CMP
JE
SUB
MOV
JMP
-----
38
04
00
07
0483
0483 88 0000 E
;
TEST
JNZ
;
3C
72
80
E8
PLUS
BUFFER _F I LL
TEST SHIFT STATUS
ALMOST-NUM-STATE
~~~_FLAG,LEFT_SHIFT+RlCiH~_~~:~iEO
AL,70
BX,OFFSET KI4
SHORT K56
TEMP OUT OF NUM STATE
REALL Y NUM STATE
CONVERT ORTGIN
NUM STATE TABLE
TRANSLATE_CHAR
PLA I N OLD LOWER CASE
CMP
JB
MOV
JMP
AL,S9
K55
AL,O
SHORT K51
NOT-SHIFT
TEST FOR FUNCTION KEYS
NOT-LOWER-FUNCT I ON
SCAN CODE IN AH ALREADY
BUFFER _F I LL
MOV
BX,OFFSET Kl0
NOT-LOWER-FUNCT I ON
LC TA8LE
K55:
KYBD
5-135
IBM Personal Computer MACRO Assembler
KY8D ----- 06/10/85
KEY80ARD 8[OS
799
600
60 I
802
0486
803
0486 FE C8
804
0488 2E: 07
605
606
607
808
04811.
809
04811. 3C FF
810
048C 74 IF
811
048E 80 FC FF
812
0491 14 III.
613
614
615
816
0493
6170493F6060011R40
818
0498 7420
619
620
621
822
04911. F6 06 0011 R 03
823
049F 74 OF
624
625
626
827
828
829
830
831
832
633
834
835
636
637
636
839
840
841
842
843
844
645
846
841
848
849
850
851
852
853
854
855
856
851
858
859
860
861
04AI
0411.3
0411.5
0411.1
04A9
0411.6
3C
72
3C
71
04
E8
;-----
1-6
Version 2.00
06-10-85
TRANSLATE THE CHARACTER
TRANSLATE-CHAR
CONVERT OR I GIN
CONVERT THE SCAN CODE TO ASC I 1
K56:
DEC
XLAT
AL
CS:KII
PUT CHARACTER
CMP
JE
CMP
JE
I NTO BUFFER
BUFFER-F I LL
IS THIS AN IGNORE CHAR
YES, DO NOTHING W[TH [T
LOOK FOR -I PSEUDO SCAN
NEAR_I NTERRUPT _RETURN
AL,-I
K59
AH,-I
K59
HANDLE THE CAPS LOCK PROBLEM
K58:
TEST
JZ
;-----
!!IKB FLAG,CAPS STATE
K61-
BUFFER-F I LL -NOTEST
ARE WE IN CAPS LOCK STATE
SKIP IF NOT
IN CAPS LOCK STATE
TEST
JZ
CONVERT ANY UPPER CASE TO LOWER CASE
41
15
SA
II
20
00
0411.0
0411.0 E9 02EE R
K59:
0480
0480
0482
0484
0486
0488
K60:
CMP
JB
CMP
JA
ADD
JMP
AL, 'A'
K6I
AL, 'Z'
K6I
AL,'a'-'A'
SHORT K61
JMP
K26
FIND OUT IF ALPHABET [C
NOT CAPS STATE
-
-
NOT CAPS STATE
CONVERT fo LOWER CASE
NOT CAPS STATE
-
-
NEAR- INTERRUPT-RETURN
INTERRUPT_RETURN
CONVERT ANY LOWER CASE TO UPPER CASE
04811.
04811.
048E
04CO
04C3
04C1
04C9
04C8
04CF
0400
0402
0404
0406
0409
040C
040E
3C
12
3C
71
2C
6 I
06
1A
02
20
CMP
JB
CMP
JA
SUB
LOWER-TO-UPPER
F I NO OUT I F ALPHABET I C
NOT_CAPS_STATE
AL,' a'
K6I
AL,' z'
K6I
AL,'a'-'A'
NOT CAPS STATE
CONVERT 1'0 UPPER CASE
NOT-CAPS-STATE
GET THE END PO I NTER TO THE BUFFER
SAVE THE VALUE
ADVANCE THE TAIL
HAS THE BUFFER WRAPPED AROUND
BUFFER FULL BEEP
STORE THE VALUE
MOVE THE PO I NTER UP
TURN OFF INTERRUPTS
END OF [NTERRUPT COMMAND
SEND COMMAND TO I NTERRUPT CONTROL PORT
I NSURE KEYBOARD I S ENABLED
EXECUTE ENABLE
MOVE I N POST CODE & TYPE
PERFORM OTHER FUNCT [ON
INTERRUPT_RETURN
K61 :
88
88
E8
38
74
89
89
FA
80
E6
BO
E8
88
CO
E9
IE OOIC R
F3
007F R
IE 00111. R
22
04
IE OOIC R
MDV
MDV
CALL
CMP
JE
MDV
MDV
20
20
AE
0595 R
9102
15
02F8 R
MDV
OUT
MDV
CALL
MDV
INT
JMP
BX,~BUFFER
TAIL
SI,BX
K4
BX,@BUFFER HEAD
K62
[S I J, AX
!!IBUFFER_TA IL,BX
CLI
AL,EOI
I NTAOO, AL
AL ,ENA KBD
SHIP IT
AX,09102H
ISH
K27A
662
663
664
665
866
867
868
869
870
871
812
673
814
675
816
871
818
879
880
881
882
663
664
665
666
667
666
669
690
691
692
893
894
895
896
897
898
899
900
901
902
903
904
905
906
901
908
909
910
911
912
TRANSLATE SCAN FOR PSEUDO SCAN CODES
04El
04El
04E3
04E3
04E5
04E1
04E9
K63:
2C 3B
04E8
04E8
04E8
04EO
04EF
04F2
04F4
04F7
SUB
AL,59
XLAT
MDV
MDV
JMP
CS:K9
AH,AL
AL,O
TRANSLATE-SCAN
CONVERT OR I GIN TO FUNCT I ON KEYS
TRANSLA TE - SCAN-aRGO
elL TABLE SCAN
PUT V ALUE INTO AH
ZERO ASC I I CODE
PUT I T I NTO THE BUFFER
K64:
2E: 07
811. EO
80 00
EB 9F
KB_INT_I
K57
ENDP
K62:
80
E6
89
83
E8
E9
20
20
0211.6
04
0000 E
02F3 R
MDV
OUT
MDV
MDV
CALL
JMP
;
;
ENABLE
AL,EOI
[NTAOO,AL
CX,618
BL,4
BEEP
K27
[NTERRUPT CONTROLLER CH I P
DIVISOR FOR 1760 HZ
SHORT BEEP COUNT (1/16 + 1/64 DELAYl
GO TO COMMON BEEP HANDLER
EXIT
--- - - - - -------- ----- --- --SND_DATA
THIS ROUTINES HANDLES TRANSMISSION OF COMMAND AND DATA BYTES
TO THE KEYBOARD AND RECE I PT OF ACKNOWLEDGEMENTS.
I T ALSO
HANDLES ANY RETR I ES IF REQU I RED
04FA
04FA
04FB
04FC
04FO
04FF
050 I
0501
0502
50
53
51
811. F8
B3 03
FA
80 26 0097 R CF
SND OATil. PROC
PUSH
PUSH
PUSH
MOV
MOV
SOD:
CL [
AND
NEAR
AX
SAVE REG [STERS
ex
ex
SAVE TRANSM I TTED BYTE FOR RETR [ES
LOAD RETRY COUNT
SH,AL
BL,3
~KB_FLAG_2.NOT
; 0 [SABLE INTERRUPTS
(KB_FE+KB_FAI ; CLEAR ACK AND RESEND FLAGS
WA [T FOR ANY PEND I NG COMMAND TO BE ACCEPTED
0501
0509
0509
0508
0500
2B C9
SUB
cX,ex
MAXIMUM WAIT COUNT
IN
TEST
LOOPNZ
AL,STATUS PORT
AL, I NPT aUF FULL
SO 1
-
READ KEYBOARD PROCESSOR STATUS PORT
CHECK FOR ANY PEND I NG COMMAND
WA I T FOR COMMAND TO BE ACCEPTED
MOV
OUT
AL,8H
PORT_A,AL
REESTABL I SH BYTE TO TRANSM I T
SEND BYTE
SOl:
E4 64
11.8 02
EO FA
05 OF 811. C7
0511 E6 60
5-136
KYBD
IBM PlI'lrsonal Computll'lr MACRO AsslI'lmblll'lr
KYBO ----- 06/10/B5
KEYBOARD BIOS
913
914
915
916
917
0513
0514
0517
0517
051C
916
919
051E
920
0520
921
0520
922
0522
923
924
0524
925
0529
926
052B
927
052B
928
0530
929
0532
930
0532
931
0533
932
0534
933
0535
934
0536
935
93.
937
936
939
940
941
942
943
0536
944
0536
945
0537
946
053C
947
948
053E
949
0543
950
0545
951
0547
952
953
0549
954
0549
955
054A
956
054F
957
958
0551
959
0556
960
0556
961
0558
962
055B
963
055C
964
055F
965
0564
966
0568
967
0560
966
969
05bF
970
0572
971
0573
972
0578
973
057A
974
057A
975
057C
976
057F
977
0580
978
0580
979
0585
980
0585
981
0586
982
0587
963
9B4
965
96.
9B7
966
969
990
991
0587
992
0587
993
0588
994
058B
995
0580
996
058F
991
0591
998
0593
999
0594
1000 0595
1001
1002
1003
1004
1005
1006
1007
1008 0595
1009 0595
1010
1011
10120596
10130591
1014 0599
10150599
1016 059B
10170590
1018
1019 059F
1020 05AO
1021 05A2
1022 05,(3
1023 05A4
1024 05A4
1025
FB
B9
1-9
Version 2.00
06-10-85
5T1
IAOO
ENABLE INTERRUPTS
LOAD COUNT FOR 10 ms+
MOV
CX,OIAOOH
TEST
JNZ
IfKB_FLAG_2. KB_FE+KB_FA
S03:
F6 06 0097 R 30
75 00
E2 F7
507
SEE IF EITHER 8[T SET
IF SET. SOMETH I NG RECE I VEO GO PROCESS
LOOP
503
OTHERW I SE WA I T
OEe
JNZ
BL
500
DECREMENT RETRY COUNT
RETRY TRANSM I SSI ON
OR
JMP
PKB_FLAG_2,KB_ERR
SHORT SD9
TURN ON TRANSM I T ERROR FLAG
RETR 1ES EXHAUSTED FORGET TRANSM [SS I ON
TEST
JZ
IfKB_FLAG_2,KB_FA
505
SEE [F THIS I S AN ACKNOWLEDGE
I F NOT. GO RESEND
ex
RESTORE REG I STERS
S05:
FE CB
75 DO
BO OE 0097 R 80
EB 07
507:
F6 06 0097 R
74 EE
SD9:
59
5B
5B
C3
POP
POP
POP
RET
SND_DATA ENDP
;
;
BX
AX
RETURN,
GOOD TRANSM I SS I ON
SND LED
SND::::LEDI
,
;~~
THIS ROUTINES TURNS ON THE MODE INDICATORS.
- ~~~ -;~~~ - - - -~~;~ - - - - -- - -- - - ------ - - - ----- - -- - - - - - ----- - --- - - - - - - - - - --
CL I
TEST
JNZ
!lIKB FLAG 2,KB PR LED
SL9-
TURN OFF INTERRUPTS
CHECK FOR MODE INDICATOR UPDATE
DON'T UPDATE AGAIN IF UPDATE UNOERWAY
OR
"OV
OUT
J"P
I us
< Sus
I/O DELAY TO ALLOW FOR L[NE LOADING
AND FOR CORRECT PULSE W [oTH
SET THE -STROBE H[GH
INTERRUPTS 8ACK ON
RECOVER THE OUTPUT CHAR
POP
PRINTER STATUS
0064
006450
0065
0065 8B
0069 42
006A EC
0068 EC
006C 8A
OObE 80
007 I
OOTI 5A
00T2 8A
0074 80
0077 E8
B50:
PUSH
AX
SAVE
MOV
INC
IN
IN
MDV
AND
aX,
CURSOR NOT MOVED
(ALl= OIH
WRITE CHARACTER STRING AND MOVE CURSOR
BL
ATTRIBUTE
STRING IS
CURSOR I S MOVED
(AL I = 02H
WR I TE CHARACTER AND ATTR I BUTE STR I NG
(VALID FOR ALPHA MODES ONLY)
STRING IS
CURSOR I S NOT MOVED
(AL I = 03H
WR I TE CHARACTER AND ATTR I BUTE STR I NG AND MOVE CURSOR
(VALID FOR ALPHA MODES ONLY)
STRING IS
CURSOR I S MOVED
NOTE:
CARR I AGE RETURN, LINE FEED, BACKSPACE, AND BELL ARE
TREATED AS COMMANDS RATHER THAN PRINTABLE CHARACTERS.
BX,CX,DX,SI,DI.BP,SP,DS,ES,SS PRESERVED DURING CALLS EXCEPT FOR
BX,CX,DX RETURN VALUES ON FUNCTIONS 03H,04H,ODH AND ODH. ON ALL CALLS
AX IS MODIFIED.
CS: CODE, OS: OAT A, ES :NOTH I NG
0000 0067
00020137
0004 015C
0006 0184
0008 0771
OOOA 0198
OOOC 0208
OOOE 02A7
DOlO 02F9
0012 0353
00140385
0016 018F
0018 0446
OOIA 0435
OOIC 06EA
DOlE 0lE5
0020 012E
0022 012£
0024 012E
0026 0382
= 0028
R
MI
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
D'
D.
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
D.
OW
D.
OW
OW
OW
MIL
EOU
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
$-MI
;
SET MODE
SET-CTYPE
SET-CPOS
READ CURSOR
READ-LPEN
ACT 01 SP PAGE
SCROLL UP
SCROLL-DOWN
READ AC CURRENT
WR I TE AC CURRENT
WRITE-C CURRENT
SET COLOR
WR IrE DOT
READ DOT
WRITE TTY
VIDEO-STATE
V IDEO-RETURN
V IDEO-RETURN
V IDEO-RETURN
WR I TE=:STR I NG
PROC
NEAR
TABLE OF- ROUTINES WITHIN VIDEO
RESERVED
RESERVED
RESERVED
CASE 19H.
110
WRITE STRING
201
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
0028
0028 FB
0029 FC
002A 06
002B IE
002C 52
0020 51
002E 53
002F 56
0030 57
0031 55
0032 E8
0035 8E
003888
003C 81
0040 83
0043 75
0045 BE
0048
0048 80
004B 74
5-144
VIDEO_IOsil
eLD
PUSH
PUSH
PUSH
PUSH
PUSH
PUSH
PUSH
PUSH
CALL
MDV
MOV
AND
eMe
0000 E
B800
3E 0010 R
E7 0030
FF 30
03
BOOO
JNE
MOV
ENTRY POINT FOR ORG OF065H
I NTERRUPTS BACK ON
SET 0 I RECT I ON FORWARD
E5
D5
SAVE WORK AND PARAMETER REGISTERS
OX
ex
8X
51
DI
8e
"2
S I, OBOOOH
POINT OS: TO DATA SEGMENT
GET SEGMENT FOR COLOR CARD
GET EQU I PMENT FLAGS SETT I NG
I SOL ATE CRT SW ITCHES
IS SETT I NG FOR BW CARD?
SKIP IF NOT BW CARD
ELSE GET SEGMENT FOR BW CARD
AH,I3H
M3
TEST FOR WRITE STRING OPERATION
SKIP IF ESlBP VALlO AS PASSED
DDS
S I, 08800H
DI,@EQUIP FLAG
DI,30H
DI,30H
M2:
FC
02
13
VIDEO 1
eMe
JE
IBM Personal Computer MACRO Assembler
VIDEOI --- 06/10/85
VIDEO DISPLAY BIDS
229
230
231
232
233
234
235
23.
237
238
239
240
241
242
243
2 ••
2'5
24.
247
248
249
250
251
252
253
254
255
256
257
258
259
2E>0
2E>1
2E>2
263
2E>4
265
266
267
268
269
270
271
272
273
274
275
27b
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
0040
004F'
004F
0051
0054
0056
0059
8E C6
1-3
Version 2.00
06-10-85
MOV
ES,S I
SET UP TO POINT AT VIDEO MEMORY AREAS
FO
EE 08
E6
FE 28
09
MOV
SHR
SAL
CMP
JNO
SI,AX
SI,8
S 1,1
S I,MIL
M4
MOVE COMMAND TO LOOK UP REG I STER
SH I FT COMMAND TO FORM 8YTE OFFSET
Ti MES 2 FOR WORD TABLE LOOKUP
TEST FOR WITH I N TABLE RANGE
BRANCH TO EXIT IF NOT A VALID COMMAND
005B 8A 26 0049 R
005F 2E: FF A4 0000 R
MOV
JMP
AH ,IPCRT MODE
; MOVE CURRENT MODE INTO AH
WORD PTR CS: IS !-tOFFSET M I ]
; GO TO SELECTED FUNCT I ON
M3:
8B
CI
01
83
73
; COMMAND NOT VALl 0
00E>4
00E>4 E9 012E R
0067
;
0067
00E>7
006A
0060
006F
0071
0073
0013
0076
007A
007F
0080
0081
0082
0084
0089
008C
008E
008F
0092
0093
- - - - - - - - --- - - -- -- - - - - - - - - - - - - - -- - - --- - - - - - --- -- --------SET MODE
THIS ROUTiNE INITIALIZES THE ATTACHMENT TO
THE SELECTED MODE.
THE SCREEN I S BLANKED.
INPUT
(ALI:: MODE SELECTED (RANCiE 0-7)
OUTPUT
NONE
~~~
BA
83
75
BO
B2
0304
FF 30
04
07
B4
- ~~~~ - --- - --- ;~~~ - - - - ~~~~ - - - -- - - -- -- - - - - - -- -----------
-
58
B9
3C
72
03
3C
72
03
3C
72
03
00 I 0
02
DE
09
04
08
09
07
02
09
;----00B2
00B2 50
00B3 88 47 OA
00B6 86 EO
00B8 IE
DX,03D4H
Dl t 30H
M8
AL, 7
DL,084H
ADDRESS OF COLOR CARD
IS BW CARD INSTALLED
OK WITH COLOR
I NO I CATE INTERNAL BW CARD MOOE
ADDRESS OF 8W (MONOCHROME) CARD
MOV
MOV
MOV
PUSH
PUSH
CO.
MOV
MOV
MOV
ANa
PUSH
AOO
OUT
POP
ASSUME
SUO
MOV
LOS
ASSUME
POP
MOV
CMP
JC
AOO
CMP
JC
AOO
CMP
JC
AOO
(tCRT MODE, AL
IPAOOR 6845,DX
IllROWS-;-25-1
OS
AX
SAVE MODE IN GLOBAL VARIABLE
SAVE ADDRESS OF BASE
I N I Ti ALI ZE DEF AUL T ROW COUNT OF 25
SAVE POINTER TO DATA SEGMENT
SAVE MODE NUMBER (AL)
CLEAR HIGH BYTE OF MODE
SET TABLE POINTER, INDEXED BY MODE
GET THE MODE SET VALUE FROM TABLE
SAVE THE MODE SET VALUE
VIDEO OFF, SAVE HIGH RESOLUTION BIT
SAVE OUTPUT PORT VALUE
POINT TO CONTROL REGISTER
RESET VIDEO TO OFF TO SUPPRESS ROLLING
BACK TO BASE REGISTER
ax
SI,AX
AL,CS:[SI -t OFFSET M7]
PCRT MODE SET, AL
AL,037H
OX
DX,4
DX,AL
OX
DS:ABSO
BX,BX
OS,8X
8X ,IPPARM - PTR
DS:COOE AX
CX,I6
AL,2
M9
BX,CX
AL,4
M9
BX,CX
AL.7
M9
8X,CX
PUSH
MOV
XCHG
PUSH
ASSUME
CALL
MOV
ASSUME
POP
XOR
OOBF IF
OOCO 32 E4
;-----
SET UP FOR ABSO SEGMENT
ESTABLISH VECTOR TABLE ADDRESSING
GET PO I NTER TO V IDEO PARMS
RECOVER MODE NUMBER IN (AL)
LENGTH OF EACH ROW OF TABLE
DETERM I NE WH I CH ONE TO USE
MODEISOORI
NEXT ROW OF INITIALIZATION TABLE
MODEIS20R3
MOVE TO GRAPHICS ROW OF INIT_TABLE
MODE IS 4,5, OR Eo
MOVE TO BW CARD ROW OF
; OUT INIT
; SAVE MODE IN (ALl
; GET THE CURSOR MODE FROM, THE TABLE
PUT CURSOR MODE I N CORRECT POSI T I ON
SAVE TABLE SEGMENT PO INTER
AX
AX,[BX-tIO]
AH,AL
DS
DS:DATA
005
PO I NT 05 TO OAT A SEGMENT
PLACE INTO BIOS DATA SAVE AREA
(iCURSOR MODE,AX
OS : COOEOS
AH,AH
LOOP THROUGH TABLE,
RESTORE THE TABLE 'SEGMENt POINTER
AH I S REG I STER NUMBER OUR I NG LOOP
OUTPUTTING REGISTER ADDRESS,
MID:
8A
EE
42
FE
8A
EE
43
4A
E2
58
1F
C4
MOV
OUT
INC
INC
MOV
OUT
INC
OEC
LOOP
POP
POP
ASSUME
C4
07
F3
I NIT_TABLE
POINTS TO CORRECT ROW OF INITIALIZATION TABLE
M9:
00B9 E8 0000 E
OOBC A:3 0060 R
00C2
00C2
00C4
DOCS
00C6
00C8
OOCA
ooce
OOCC
OOCD
OOCF
0000
MOV
CMP
JNE
MOV
MOV
Me:
A2 0049 R
89 16 0063 R
C6 06 0084 R 18
IE
50
98
8B FO
2E: 8A 84 0000 E
A2 0065 R
24 37
52
83 C2 04
EE
5A
0094 2B DB
0096 8E DB
0098 C5 IE 0074 R
009C
0090
OOAO
00A2
00A4
OOAo
00A8
OOM
OOAC
OOAE
OOBO
; 00 NOTHING IF NOT IN VALID RANGE
V IDEO RETURN
ENDP -
;
THEN VALUE FROM TABLE
INITIALIZATION LOOP
GET 6845 REGISTER NUMBER
AL,AH
DX,Al
OX
AH
AL, [BX]
DX,Al
OX
OX
MIO
AX
OS
DS:OATA
POINT TO DATA PORT
NEXT REGISTER VALUE
GET TABLE VALUE
OUT TO CHIP
NEXT IN TABLE
BACK TO PO I NTER REG ISTER
DO THE WHOLE TABLE
GET MODE BACK INTO (AL I
RECOVER SEGMENT VALUE
FILL REGEN AREA WITH BLANK
000 I
0003
0007
OOOC
OODF
ODE 1
00E3
DOES
OOEl
00E9
00E8
OOEB
OOEO
OOEO
ODFO
OOFO
33
89
C6
B9
3C
72
3C
74
33
E8
FF
3E 004E R
06 0062 R 00
2000
04
OA
07
04
CO
as
XOR
MOV
MOV
MOV
CMP
JC
CMP
JE
XOR
JMP
01,01
IllCRT_START ,01
iltACTIVE_PAGE,O
CX,8192
AL,4
MOV
CH,08H
SET UP PO I NTER FOR REGEN
START ADDRESS SAVED IN GLOBAL
SET PAGE VALUE
NUMBER OF WORDS I N COLOR CARD
TEST FOR GRAPH I CS
NO GRAPHICS INIT
TEST FOR BW-CARO
BW CARD INIT
FILL FOR GRAPHICS MODE
CLEAR BUFFER
BW CARD INIT.
BUFFER. SIZE ON BW CARD (20481
NO GRAPHICS INIT
FILL CHAR FOR ALPHA -t ATTR I BUTE
CLEAR BUFFER
FILL THE REGEN BUFFER WITH BLANKS
MI2
AL,7
Mil
AX,AX
SHORT MI3
Mil:
B5 08
M12:
88 0720
"OV
AX, •
REP
STOSW
'-t7·H
M13:
F3 f
AB
ENABLE VIDEO AND CORRECT PORT SETTING
00F2 88 16 0063 R
00F6 83 C2 04
MOV
AOO
OX ,IltADDR 6845
OX,4
-
;
;
PREPARE TO OUTPUT TO V IDEO ENABLE PORT
PO I NT TO THE MODE CONTROL REG I STER
VIDEO 1
5-145
IBM Per.sonal Computer MACRO Assembler
VIDEO! --- 06/ !0/S5
VIDEO DISPLAY BIOS
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
360
381
382
383
384
385
386
387
366
369
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
416
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
436
439
440
441
442
443
444
445
446
447
446
449
450
451
452
453
454
455
456
00F9 AO 0065 R
OOFC EE
1-4
06-10-85
Version 2.00
MOV
OU7
GET THE MODE SET VALUE
SET V I DEO ENABLE PORT
;
;
AL,@CRT MODE SET
DX,AL
-
DETERM I NE NUMBER OF COLUMNS, BOTH FOR ENT I RE 0 I SPLA Y
AND THE NUMBER TO 8E USED FOR TTY INTERFACE
OaFD 2E: SA 84 0000 E
O! 02 96
0103 A3 004A R
MOV
0106
OIOA
OlaF
0112
0115
0118
0119
alIA
011C
61 E6 OOOE
2E: 6B 84 0000 E
A3 004C R
B9 0008
BF 0050 R
IE
07
33 co
F3/ A8
AND
MOV
MOV
MOV
MOV
Si,OOOEH
AX,CS:[SI + OFFSET M5]
IIICRT LEN,AX
CX,801 ,OFFSET
.51
CALL
;----0255
0255
0258
02SC
025E
0260
0262
0264
0266
0268
026C
026E
b270
0274
0276
0277
02TA
027B
027C
027E
0280
0282
---;~~~----~~~~
-- ------------------------- - --- - -----------
E8
80
72
80
.51
.55
,
OFFSET OF CHAR POSITION IN REGEN BUFFER
ASSUME
SCROL.L._UP
0208
0208
0208
020E
0210
0213
0215
0218
0218
0219
0218
021E
0220
0222
0224
0226
0226
0229
022B
0220
022F
0231
0231
P232
0234
0234
0237
0239
0238
0230
0230
0240
0245
0247
024A
0240
024E
024E
0251
b251
0253
0255
ROW. COL.UMN POSITION
POSITION RET
ENOP
I - - ----- - ------ - - - - - - - - -- -- --- - - - - ----- - - -, SCROLL UP
;
TH I S ROUTI NE MOVES A BL.OCK OF CHARACTERS UP
;
ON THE SCREEN
I INPUT
(AH) =: CU~RENT CRT MODE
;
(AU =: NUMBER OF ROWS TO SCROL.L.
;
(CX) =: ROW I COL.UMN OF UPPER L.EFT CORNER
1
(OX) =: ROW 1COLUMN OF L:OWER RIGHT CORNER
;
(BH) =: ATTRIBUTE TO 8E USED ON BL.ANKEO L.INE
1
~ OS) =: OAT A SEGMENT
;
; ,
(ESI = REGEN BUFFER SEGMENT
; OUTPUT
NONE -- THE REGEN BUFFER IS MODIFIED
;
5 ••
5'5
."
.,2
----
,
SERVICE ROUTIIIIE CAL.CUL.ATES THE REGEN BUFFER ADDRESS
CHARACTER I N THE AL.PHA MODE
PUSH
MOV
MOV
MUL.
XOR
ADD
SAL
POP
08
C4
26 004A R
FF
C3
EO
5'3
..
.,.
POSITION
THIS
OF A
INPUT
,AX =:
OUTPUT
AX =:
~~~; ~; ~~-
5.2
•••
•••,
•••
•••
ENDP
; -----=- _. . ------------- ----- ---- -- ---- -- --
512
513
51.
515
51.
581
582
06-10-85
VIDEO STATE:
0lF7
1-.
Ver-$Ion 2.00
pROC
NEAR
POSITION
AX,(tCRT START
OI,AXSI,AX
OX,CX
OH
OL
CH.CH
BP. (tCRT COLS
BP,SPAL,BL.
BYTE pTR OCRT COLS
AX,AX
AX
AL, (tCRT MODE
ES
OS
AL,2
N9
AL , 3
N9
CONVERT TO REGEN PO INTER
OFFSET OF ACT I VE PAGE
~~oQD~~~~~s~o~o~c~g~~LL
OX
=
.ROWS. #COLS
I N BLOCK
INCREMENT POR 0 OR I GIN
SET HIGH .BYTE OF COUNT TO ZERO
GET NuttiBER OF COLUMNS IN 0 I SPLAY
TIMES 2 FOR ATTRIBUTE BYTE
GET LINE COUNT
DETERMINE,PFFSET TO FROM ADDRESS
·2 FOR ATTR I BUTE BYTE
SAVE LINE COUNT
GET CURRENT MODE
ESTABLISH ADDRESSING TO REGEN BUFFER
FOR BOTH PO INTERS
TEST FOR COLOR CARD SPEC I AL CASES HERE
HAVE TO HANOLE BOX25 SEpARATEL.Y
80X25 COLOR CARD SCROLL
PUSH
OX
MOV
OX,3DAH
IN
AL,DX
AL.RVRT
N.
AL,25H
DL,OD8H
N8 •
TEST
Jz
MOV
MOV
GUARANTEED TO 8E COLOR CARD HERE
WAiT DI'SP ENABLE
GET PORT WAIT FOR VERTICAL. RETRACE
WAIT_OI SP _ENABLE
ADDRESS CONTROL PORT
IBM Personal Computer MACRO Assembler
VIDEOI --- 06/10/85
VIDEO DISPLAY BIOS
685
686
681
688
689
690
0291
0292
0293
0293
0294
0296
EE
5A
Vt!rsion 2.00
OUT
POP
1-7
06-10-85
TURN OFF V IDEO OUR I NG VERT I CAL RETRACE
OX,AL
OX
N9:
58
OA DB
C3
691
POF
AX
OR
8L,BL
RET
SCROLL_paS! T I ON ENOP
RESTORE LINE COUNT
o SCROLL MEANS BLANK F [ELD
RETURN WITH FLAGS SET
692
693
694
695
696
691
698
699
100
10 I
702
0291
0291
0299
029A
0298
0290
029E
029F
02AO
8A CA
56
51
F31 A5
SF
5E
C3
703
104
705
706
707
708
109
710
711
02AO
02AO
02A2
02A3
02A5
02A6
02A7
8A CA
57
F31 AB
5F
C3
NIO
764
765
766
767
768
769
770
771
772
173
774
775
776
777
778
779
780
78 r
782
CLEAR ROW
PROC NEAR
MOV
CL,DL
PUSH
OJ
REP
STOSW
01
POP
RET
ENDP
GET # OF COLS TO MOVE
SAVE START ADDRESS
MOVE THAT LiNE ON SCREEN
1 RECOVER ADDRESSES
I GET # COLUMNS TO CLEAR
STORE THE FILL CHARACTER
Nil
; - ------- -------------------------------; SCROLL DOWN
;
THIS ROUTINE MOVES THE CHARACTERS WITHIN A DEFINED
;
BLOCK DOWN ON THE SCREEN, FILLING THE TOP LINES
;
WITH A DEF I NED CHARACTER
; INPUT
(AHI
;
CURRENT CRT MODE
(AL) = NUM8ER OF LI NES TO SCROLL
;
(CX)
UPPER LEFT CORNER OF REG I ON
;
(OX)
LOWER RIGHT CORNER OF REG [ON
(SH) = FILL CHARACTER
;
(OS) = DA T A SEGMENT
;
(ES)
REGEN SEGMENT
; OUTPUT
NONE -- SCREEN IS SCROLLED
;
112
113
114
115
116
117
118
119
720
721
722
723
724
725
726
727
728
729
730
731
732
73:3
734
735
736
737
738
739
740
741
742
743
744
745
746
74 7
748
749
750
751
752
753
754
755
756
757
158
759
760
761
762
763
MOVE ROW
PROCNEAR
MOV
CL,OL
PUSH
S[
PUSH
0 [
REP
MOVSW
POP
01
POP
SI
RET
ENDP
=
=
=
=
02A1
02A1
02A13
02A8
02AE
0280
02B3
0285
0288
02B8
02B9
02B8
028E
02CO
02C2
02C4
02C6
02C6
02C9
02CB
02CO
02CF
0201
0201
0202
0204
0204
0207
0209
0208
0200
02EO
02EO
02E2
02E4
-
;~;~~~ ~~;~
FO
EI3
80
72
80
74
E9
02E4 R
FC 04
08
FC 07
03
04FA R
---- - ~;~~ ----~~~; - - - - ----- ----
STD
CALL
CMP
JC
CMP
..IE
..IMP
0 I RECTI ON FOR SCROLL DOWN
TEST LINE COUNT
AH,4NI2
AH, 7
N12
GRAPH ICS_DOWN
N12:
53
8B
E8
74
2B
8A
2A
C2
0255 R
20
FO
E6
E3
E8
2B
2B
FE
75
0297 R
F5
FO
CC
F5
TEST FOR GRAPHICS
TEST FOR 8W CARD
CONT I NUE DOWN
SAVE ATTRIBUTE IN BH
LOWER RIGHT CORNER
GET REGEN LOCATION
PUSH
"OV
CALL
JZ
5UB
"OV
SUB
BX
AX,DX
SCROLL_POS I T I ON
NI6
SI,AX
AH,oH
AH,BL
CALL
SUB
SUB
OEC
JNZ
NIO
SI,SP
OI,BP
AH
NI3
MOVE ONE ROW
POP
"OV
AX
AL,
RECOVER ATTRIBUTE
CALL
SUB
DEC
JNZ
J"P
Nil
ol,SP
BL
NI5
N5
CLEAR ONE ROW
GO TO NEXT ROW
51 IS FROM ADDRESS
GET TOTAL # ROWS
COUNT TO MOVE I N SCROLL
N13:
N14:
58
BO 20
IN AH
N15:
E8
26
FE
75
E9
02AO R
FO
CB
F7
0230 R
SCROLL_END
N16:
8A DE
E6 ED
"OV
J"P
SCROLL DOWN
-
;-----
BL,DH
NI4
ENDP
IF
AMOUNT OF LINES TO BE SCROLLED
THEN
ADJUST AL; ELSE
RETURN;
= AMOUNT
OF LiNES
IN WINDOW
02E4
02E4
02E6
02E8
02EA
02E8
02EO
02EF
02Fl
02F3
02F4
02F6
02F8
02F8
02F9
8A
OA
74
50
8A
2A
FE
3A
58
75
2A
C3
08
CO
DE
C6
C5
CO
C3
02
08
"OV
OR
JZ
PUSH
"OV
SUB
INC
eMP
POP
JNE
SUB
BL,AL
AL,AL
BL SET
AXAL,DH
AL,CH
AL
AL,BL
AX
BL SET
BL-;-BL
RET
TEST_LiNE_COUNT ENDP
SA 'IE LI NE COUNT I N BL
TEST IF AL I S ALREADY ZERO
IF IT IS THEN RETURN •••
SAVE AX
SUBTRACT LOWER RDW FROM UPPER ROW
ADJUST DIFFERENCE BY !
LINE COUNT = AMOUNT OF ROWS
RESTORE AX
I F NOT THEN WE'RE ALL SET
OTHERW I SE SET SL TO ZERO
IN WINDOW?
RETURN
VIDE01
5-149
IBM Peraonal Computer MACRO Al!ll!lembler
VIDEOI --- 0&/10/85
VIDEO DISPLAY BIOS
18.
1-8
06-10-85
Version 2.00
PAGE
;--------------------------------------------------- - ----- --------- ---- -------; READ AC CURRENT
I
7 ••
7 ••
7 ••
7.7
7 ••
7 ••
790
;
INPUT
7"
7'2
THIS ROUTINE READS THE ATTRIBUTE AND CHARACTER AT THE CURRENT
CURSOR POSITION AND RETURNS THEM TO THE CALLER
(AH 1 ,.. CURRENT CRT MODE
(BHI = DISPLAY PAGE I ALPHA MODES ONLY 1
(DSI :: DATA SEGMENT
(ES I
REGEN SEGMENT
=
OUTPUT
7"
7 ••
7 ••
(AL)
IAH)
: CHARACTER READ
= ATTRIBUTE READ
I
;
1------------------------------------------------------------------------------ASSUME DSIDATA.ESIDATA
7'.
7.7
7 ••
799
800
80 I
02F9
02F9 80 FC 04
02FC 72 08
READ AC CURRENT PROC
-CMP
AH.4
.JC
PIO
NEAR
;
IS THIS GRAPHICS
;
IS THIS BW CARD
.02
.0.
803
804
02FE 80 FC 07
0301 74 03
80&
807
808
809
810
811
0303
030&
0306
0309
030B
030C
.'2
.13
.,,
8US
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
0300
030F
0311
0311
0312
0313
0314
0315
0317
0319
0319
031A
031C
031E
031E
031F
832
0322
835
836
837
838
839
840
841
842
843
844
845
846
0322
0322
0324
0326
0329
032B
0320
032F
0331
0333
0335
0339
848
849
850
851
852
853
854
855
856
857
858
859
•• 0
033B
0330
0330
0341
0342
0344
0344
0347
0349
0340
0350
0352
8&2
0353
.31
•••
•••
..,
..,
E9 062A R
PIa;
E8 0322 R
8B F7
0&
IF
eMP
AH.7
""
Pl0
"MP
GRAPH ICS_READ
CALL
MOV
FIND POSITION
SI.DT
PUSH
ES
POP
as
READ AC CONT I NUE
GET RE'GEN LOCATION AND PORT ADDRESS
ESTABLISH ADDRESSING IN 51
GET REGEN SEGMENT FOR QUICK ACCESS
1-----
WAIT FOR HORIZONTAL RETRACE OR VERTICAL RETRACE IF COLOR 80
PII;
"NZ
OA OB
75 00
OR
FB
90
FA
EC
A8 01
75 F8
PI2
CHECK MODE FLAG FOR COLOR CARD IN 80
ELSE SKIP RETRACE WAIT - DO FAST READ
WAIT FOR HDRZ RETRACE LOW OR VERTICAL
ENABLE INTERRUPTS FIRST
ALLOW FOR SMALL INTERRUPT WINDOW
BLOCK INTERRUPTS FOR SINGLE LOOP
GET STATUS FROM THE ADAPTER
IS HOR I ZONT AL RETRACE LOW
WAIT UNTIL IT IS
NOW WAIT FOR EITHER RETRACE HIGH
GET STATUS
IS HOR I ZONT AL OR VERT I CAL RETRACE HIGH
WAIT UNTIL EITHER IS ACTIVE
V IDEO_RETURN
GET THE CHARACTER AND ATTR I BUTE
EXIT WITH lAX)
BL..BL
P13
STI
Nap
eLI
IN
TEST
"NZ
AL,DX
AL.RHRZ
Pl1
P12:
IN
EC
A8 09
74 F8
TEST
PI3s
AD
E9 012E R
"Z
LODSW
.JMP
AL,OX
AL.RVRT+RHRZ
READ_AC_CURRENT ENDP
86
88
80
00
8B
8A
32
88
01
88
E3
E8
E8 02
E8
F3
OF
FF
FB
E7
85 0050 R
74 09
FIND POSITION
XCHG
MOV
SUB
SHR
MOV
MOV
XOR
MOV
SAL
MOV
"Z
PROC
NEAR
SETUP FOR BUFFER READ OR WR I TE
AH,BL
SWAP MODE TYPE WITH ATTRIBUTE
BP,AX
SAVE CHARACTER/ATTR IN (BPI REGISTER
BL,2
CONVERT D I SPLAY MODE TYPE TO A
BL,I
ZERO VALUE FOR COLOR IN 80 COLUMN
SI,BX
AND SAVE (2 OR 3 --> ZERO)
BL,BH
MOVE DISPLAY PAGE TO LOW BYTE
SH,8H
CLEAR HIGH BYTE OF COUNT/BYTE OFFSET
OI,BX
MOVE DISPLAY PAGE (COUNT! TO WORK REG
01,1
; TIMES 2 FOR WORD OFFSET
AX, [DI+OFFSET .CURSOR_POSN]
; GET ROW/COLUMN OF' THAT PAGE
SK IP SUFFER AD.JUSTMENT IF PAGE ZERO
P21
33 FF
XOR
01,01
ELSE SET BUFFER START ADDRESS TO ZERO
03 3E 004C R
4B
75 F9
AOO
OEe
~~ ••CRT_LEN
"NZ
P20
ADD LENGTH OF BUFFER FOR ONE PAGE
DECREMENT PAGE COUNT
LOOP TILL PAGE COUNT EXHAUSTED
CALL
ADD
MOV
ADD
MOV
RET
POSITION
OI,AX
OX ,OADOR 6845
DX,6
SX,SI
P21;
E8
03
8B
83
8B
C3
5-150
0 I Fl R
F8
16 0063 R
C2 06
DE
FIND_POSITION
VIDEO 1
ENDP
DETERMINE LOCATION IN REGEN IN PAGE
ADO LOCATION TO START OF REGEN PACiE
GET BASE ADDRESS OF ACTIVE DISPLAY
POINT AT STATUS PORT
RECOVER CONVERTED MODE TYPE IN (BL I
BP= ATTRIBUTE/CHARACTER (FROM BLJAL)
01= POSITION (OFFSET IN REGEN BUFFER I
OX: STATUS PORT ADDRESS OF ADAPTER
SL= MODE FLAG (ZERO FOR 80X25 COLOR I
IBM Personal Computer MACRO Assembler
VIDEOI --- 06/10/85
VIDEO DISPLAY BIDS
863
864
865
866
867
868
809
870
871
872
873
874
875
876
871
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
901
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
PAGE
; -------- - -- - - --- - - - --------- --------------------------------- -- -- ---------; WR I TE AC CURRENT
-THTs ROUTINE WRITES THE ATTRIBUTE AND CHARACTER
;
AT THE CURRENT CURSOR POSITION
; INPUT
IAHI = CURRENT CRT MODE
(BHI = D I SPLA Y PAGE
;
(CX) = COUNT OF CHARACTERS TO WRITE
(AL) = CHAR TO WR 1TE
;
IBLl = ATTR I BUTE OF CHAR TO WR I TE
(DSI = DATA SEGMENT
;
(ES) = REGEN SEGMENT
; OUTPUT
01 SPLAY REGEN BUFFER UPDATED
;
--
0353
0353
0356
0358
035B
0350
0360
0360
80
12
80
14
E9
FC 04
08
FC 01
03
0582 R
E8 0322 R
WR I TE AC CURRENT
PROC
eMP
AH,4
Je
P30
AH,1
e"p
P30
JE
GRAPHICS_WRITE
J"P
P30:
CALL
FIND_POSITION
0363 OA DB
0365 14 06
OR
JZ
BL,BL
P32
0361 95
0368 F3/ AB
036A EB 16
XCHG
REP
J"P
AX,BP
STOSW
SHORT
;----036C
036C
0360
0360
036E
036F
0310
0371
0373
0315
0371
0379
0379
037A
031C
037E
031E
037F
0380
0382
0382
BP,AX
P32:
FB
90
FA
EC
A8
15
A8
15
5T1
NOP
eLI
08
09
0I
F4
IN
TEST
JNZ
TEST
JNZ
AL,DX
AL,RVRT
P34
AL,RHRZ
P32
IN
TEST
JZ
AL,DX
AL, RVRT +RHRZ
P33
XCHG
STOSW
LOOP
P31
P33:
EC
A8 09
14 FB
NEAR
IS THIS GRAPHICS
IS THIS BW CARD
WR I TE AC CONT I NUE
GET REGEN-LOCAT I ON AND PORT ADDRESS
ADDRESS IN (01) REGISTER
CHECK MODE FLAG FOR COLOR CARD AT 80
SKIP TO RETRACE WAIT IF COLOR AT 80
GET THE ATTR/CHAR SAVED FOR FAST WRITE
STRING WRITE THE ATTRIBUTE & CHARACTER
EXIT FAST WRITE ROUTINE
WAIT FOR HORIZONTAL RETRACE OR VERTICAL RETRACE
XCHG
GET THE ATTR/CHAR SAVED IN (BP)
wRITE THE ATTRIBUTE AND CHARACTER
AS MANY TIMES AS REQUESTED - TILL CX=O
AX ,BP
P35:
E9 012E R
JMP
EXIT
WR I TE _ AC _CURRENT
;
;
;
80
12
80
14
E9
FC 04
08
FC 01
03
0582 R
E8 0322 R
ENDP
----- - - - - - - - -- -- - - - - - - --- -- -- - - - - - - -- - - - - - - ------ - - - - - ------ - -- -- - - - - - - - - - - - --WR I TE C CURRENT
-THIS ROUTINE WRITES THE CHARACTER AT
THE CURRENT CURSOR POSITION, ATTRIBUTE UNCHANGED
INPUT
(AH) = CURRENT CRT MODE
(BH) = DISPLAY PAGE
(CX) = COUNT OF CHARACTERS TO WR I TE
(ALl = CHAR TO WRITE
(OS) = DATA SEGMENT
(ES) :: REGEN SEGMENT
OUTPUT
01 SPLA Y REGEN BUFFER UPOA TED
- - - - - - - - - - --- ---- - -- -- - - - - - - - - - - - --- - - -- - - - - - --- - -- -- - -- - - - - - - - - - - - - -- - - - -- -- --
WR I TE C CURRENT
- -CMP
,JC
CMP
,JE
,JMP
P40:
CALL
PROC
NEAR
AH,4
P40
AH,7
P40
GRAPHICS_WRITE
IS THIS GRAPHICS
IS THIS BW CARD
GET REGEN LOCATION AND PORT ADDRESS
ADDRESS OF LOCATION IN (01)
WAIT FOR HORIZONTAL RETRACE OR VERTICAL RETRACE
0395
0395
0396
0398
039A
039B
039C
039E
03AO
03A2
03A4
03A4
03A5
03A 7
03A9
03A9
03AB
03AC
03AO
P41 :
FB
OA
75
FA
EC
A8
15
A8
75
STI
OR
JNZ
DB
OF
BL,BL
P43
eLi
08
09
01
Fl
IN
TEST
JNZ
TEST
JNZ
AL,DX
AL,RVRT
P43
AL,RHRZ
P41
IN
TEST
JZ
AL,DX
AL,RVRT+RHRZ
P42
"OV
STOSB
INe
LOOP
01
P41
JMP
V IDEO_RETURN
P42:
EC
A8 09
14 FB
IF COLOR 80
WAIT FOR HDRZ RETRACE LOW OR VERTICAL
ENABLE INTERRUPTS FIRST
CHECK MODE FLAG FOR COLOR CARD IN 80
ELSE SKIP RETRACE WAIT - DO FAST WRITE
BLOCK I NTERRUPTS FOR SINGLE LOOP
GET STATUS FROM THE ADAPTER
CHECK FOR VERTICAL RETRACE FIRST
DO FAST WRITE NOW IF VERTICAL RETRACE
IS HOR I ZONT AL RETRACE LOW THEN
WAIT UNTIL IT IS
WA I T FOR EITHER RETRACE HIGH
GET STATUS AGAIN
IS HORIZONTAL OR VERTICAL RETRACE HIGH
WA I T UNT I LEI THER RETRACE ACT I VE
P43:
8B C5
AA
41
E2 E6
03AF E9 012E R
0382
IF COLOR 80
LOOP FOR EACH ATTR/CHAR WRITE
PLACE ATTR/CHAR BACK IN SAVE REGISTER
WA I T FOR HORZ RETRACE LOW OR VERT I CAL
ENABLE INTERRUPTS FIRST
ALLOW FOR INTERRUPT WINDOW
BLOCK I NTERRUPTS FOR 5 I NGLE LOOP
GET STATUS FROM THE ADAPTER
CHECK FOR VERTICAL RETRACE FIRST
DO FAST WRITE NOW IF VERTICAL RETRACE
IS HOR I ZONTAL RETRACE LOW THEN
WAIT UNTIL IT IS
WAIT FOR EITHER RETRACE HIGH
GET STATUS AGAIN
IS HORIZONTAL OR VERTICAL RETRACE HIGH
WAIT UNTIL EITHER IS ACTIVE
P34:
95
AB
E2 EA
0385
0385
0385
0388
038A
0380
038F
0392
0392
P35
P31 :
95
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
951
958
959
960
961
962
963
964
965
966
967
968
969
970
911
1-9
06-10-85
Version 2.00
AX,BP
GET THE CHARACTER SAVE IN (BP)
PUT THE CHARACTER I NTO REGEN BUFFER
BUMP POINTER PAST ATTRIBUTE
AS MANY TIMES AS REQUESTED
WR I TE _ C_CURRENT ENDP
VIDEO 1
5-151
IBM Personal Compute!" MACRO Assembler
VIDEOI --- 06110/85
VIDEO DISPLAY BIOS
972
973
974
975
97.
5-152
1-10
06-10-85
PAGE
WRITE STRING
-THIS ROUTINE WRITES A STRING OF CHARACTERS TO THE CRT.
INPUT
(AL) = WRITE STRING COMMAND
0 - 3
(8H) ;0 DISPLAY PAGE
(CX) ;0 COUNT OF CHARACTERS TO WR I TE, IF \ CX I = 0 THEN RETURN
(OXI = CURSOR POSITION FOR START OF STRING WRITE
(BL) = ATTRIBUTE OF CHARACTER TO WRiTE IF (AU = 0
OR
(AL) "
(ES)
SOURCE STRING SEGMENT
ISP) = SOURCE STRING OFFSET
OUTPUT
NONE
977
978
979
980
981
982
983
98.
985
98.
987
0382
988
0382
989
03B4
990
0386
991
992
0388
993
03BA
994
03BO
995
03BF
996
03C3
991
03C4
998
03C7
999
03C9
t 000 03CA
1001 03CA
1002 03CB
1003 03CC
1004 03CD
1005 03CF
1006 0303
1007
1008
1009
1010 0304
1011 0306
1012 0308
1013 030A
1014 030C
1015 030E
1016 03EO
1011 03E2
1018 03E4
1019 03E4
1020 03E6
1021 03E8
1022 OSEC
1023 03EO
1024 03EE
1025 03EF
1026 03F 1
1027 03FI
1028 03F4
1029 03F7
1030 03F9
1031 03FD
1032 03FE
1033 03FE
10340400
t 035 0402
1036 0403
1037 0404
1038 0405
1039 0407
1040 040B
1041 0400
1042 040F
1043 041 t
1044 0414
1045
1046 0416
1041 0417
1048 041A
1049 041 C
1050 041E
1051 041F
1052 041F
1053 0420
1054 0423
1055 0425
1056 0426
1051
1056 0426
1059 0429
1060 0428
t 061 0420
10620430
1063 0432
1064 0432
1065
1066 0435
Version 2.00
=
1
~~~~~-~~~~~;----;~~~----~~~;---------------------------------------------------
3C 04
73 7C
E3 7A
88
C!
O!
FF
50
98
CO
58
-
F3
EE 08
E6
B4 0050 R
CMP
..INS
JCXZ
AL,04
P59
P59
TEST FOR INVALID WRITE STRING OPTION
IF OPTION [NVALID THEN RETURN
IF ZERO LENGTH STRING THEN RETURN
MOV
sl,ex
SHR
S 1,8
S [, t
;
[SI+OFFSET (IICURSOR POSNj;
AX
-;
AX,0200H
;
10H
AX
GET CURRENT CURSOR PAGE
CLEAR HIGH BYTE
CONVERT TO PAGE OFFSET
lSI
PAGE~
SAVE CURRENT CURSOR POSITION IN STACK
SAVE WRITE STRING OPTION
SET NEW CURSOR POS I T I ON
SAL
PUSH
PUSH
0200
10
MOV
INT
POP
=
RESTORE WR I TE STR [NG OPT [ON
P50 :
51
53
50
86 EO
26: 8A 46 00
45
PUSH
PUSH
PUSH
XCHG
3C
74
3C
14
3C
74
3C
15
CMP
MOV
INC
CX
BX
AX
AH,AL
AL,ES: IBP]
BP
PUT THE WRITE STRING OPTION INTO (AH)
GET CHARACTER FROM INPUT STRING
BUMP PO I NTER TO CHARACTER
TEST FOR SPEC I AL CHARACTER'S
08
OC
00
08
OA
04
07
00
JNE
AL,06H
P51
AL,CR
PSI
AL,LF
P51
AL,07H
P52
MOV
[NT
MOV
POP
POP
POP
..IMP
AH, OEH
TTY CHARACTER WR I TE
10H
j -WR I TE TTY CHARACTER TO THE CRT
OX, (SI+OFFSET (IICURSOR POSNj ; GET CURRENT CURSOR POSITION
AX
- ; RESTORE REG [STERS
BX
CX
SHORT P54
GO SET CURSOR POSITION AND CONTINUE
JE
CMP
JE
CMP
JE
CMP
J S IT A BACKSPACE
BACK SPACE
[S I T CARR I AGE RETURN
CAR RET
[S IT A LINE FEED
LINE FEED
IS IT A BELL
I F NOT THEN DO WR I TE CHARACTER
P51:
84 OE
CO 10
88 94 0050 R
58
58
59
E8 2E
P52:
89 QOOI
80 FC 02
12 05
26 I SA 5E 00
45
MOV
CMP
JB
CX, j
AH,2
P53
INC
BL,ESI [BP]
BP
MOV
AH,09H
MOV
SET CHARACTER WR I TE AMOUNT TO ONE
[S THE ATTRIBUTE IN THE STRING
IF NOT THEN SKIP
ELSE GET NEW ATTR I BUTE
BUMP STR I NG PO [NTER
P53:
84
CD
58
58
59
FE
3A
12
FE
2A
80
72
09
10
C2
16 004A R
12
C6
02
FE
09
IN7
10H
POP
AX
POP
POP
BX
INC
JB
OL
DL, BYTE PTR (IICRT COLS
P54
-
INC
OH
SUB
CMP
DL,DL
DH,25
PS'
CMP
JB
50
88 OEOA
CD 10
FE CE
58
PUSH
MOV
CX
AX
AX,OEOAH
INT
10H
OEC
POP
DH
PUSH
AX
AX,0200H
AX
P54:
50
88 0200
CO to
58
E2 A2
MOV
LOOP
10H
AX
PSO
POP
DX
TEST
JNZ
AL,O IH
P59
AX,0200H
10H
INT
POP
5A
A8 01
75 as
B8 0200
CD 10
MOV
INT
P59:
E9 012E R
JMP
WRITE_STR[NG
VIDEO 1
GOT CHARACTER
WR [TE CHARACTER TO THE CRT
RESTORE REG I STERS
V I OED_RETURN
ENDP
I NCREMENT COLUMN COUNTER
IF eOLS ARE WITH I N RANGE FOR TH I S MODE
THEN GO TO COLUMNS SET
BUMP ROW COUNTER BY ONE
SET COLUMN COUNTER TO ZERO
IF ROWS ARE LESS THAN 25 THEN
GO TO ROWS_COLUMNS_SET
ELSE SCROLL SCREEN
DO SCROLL ONE LINE
RESET ROW COUNTER TO 24
RESTORE REGI STERS
ROW COLUMNS SET
SAVE-WR I TE sTR [NG OPT [ON
SET NEW CURSOR POSIT[ON COMMAND
ESTABLISH NEW CURSOR POSITION
DO IT ONCE MORE UNTIL
(CX)
= ZERO
RESTORE OLD CURSOR COORD [NA TES
I F CURSOR WAS NOT TO BE MOVED THEN
THEN EX I T WITHOUT RESETT I NG OLD VALUE
ELSE RESTORE OLD CURSOR POSITION
DONE - EXIT WRITE STRING
RETURN TO CALLER
IBM P ..... sonal Compute .... MACRO Ass.mble....
VIDEOI --- 06/10/85
VIDEO DISPLAY 8105
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085 0435
1086 0435 E8 0469 R
1087 0438 261 8A 04
1088 0438 22 C4
1089 0430 02 EO
1090 043F 8A CE
1091 0441 02 CO
1092 0443 E9 012E R
1093 0446
109,4
'
1095 0446
1096 0446 50
1097044150
1098 0448 E8 0469 R
1099 0448 02 E8
I I 00 0440 22 C4
1101 044F 26; 8A OC
1102 0452 5B
I 1 03 0453 F6 C3 80
1 104 0456 15 00
105 0458 F6 04
106 045A 22 CC
101 045C OA Cl
10e 045E
109 045E 261 88 04
110046158
1"
0462 E9 012E R
112 0465
1 13 0465 32 C 1
114 0467 EB F5
115 0469
".
117
PAGE
; ----- -------- ------;
I-II
06-10-85
-- ----------------------
READ DOT
-- WR I TE DOT
THESE ROUT I NES WILL WR I TE A DOT, OR ~EAD THE
DOT AT THE INDICATED LOCATION
ENTRY -OX
ROW (0-I99)
(THE ACTUAL VALUE DEPENDS ON THE MODE)
CX = COLUMN ( 0-639) 1 THE VALUES ARE NOT RANGE CHECKED)
AL
DOT VALUE TO WRITE 11,2 OR 4 BITS DEPENDING ON MODE,
REQUIRED FOR WRITE DOT ONLY, RIGHT ,JU~TIFIEO)
BIT 7 OF AL '" I INDICATES XOR THE VALUE INTO THE LOCATION
OS = DATA SEGMENT
.
ES = REGEN SEGMENT
=
=
EXIT
AL = DOT VALUE READ, RIGHT .JUSTIFIED, READ ONLY
J ------------- ------ - - - - - - - - - - - - ---- ----------ASSUME
OS;OATA,ES;DATA
READ DOT
PROC
NEAR
CALL
R3
OETERM I NE 8YTE POS I T I ON OF DOT
MOV
AL,ES: [511
GET THE BYTE
MASK OFF THE OTHER BITS I N THE BYTE
AND
ALlAH
SHL
ALICL
LEFT .JUSTIFY THE VALUE
MOV
CL,OH
GET NUMBER OF BITS IN RESULT
ROL
AL,CL
RIGHT .JUST I FY. THE RESULT
.JMP
V IDEO RETURN
RETURN FRON V IDEO 1/0
READ_DOT
ENDP WRITE DOT
PUSH
PUSH
CALL
SHR
AND
MDV
POP
PROC
NEAR
AX
AX
R3
TEST
AL,CL
AL,AH
CL,ES: [SI
BX
BL I 80H
"NZ
R2
NOT
AND
DR
SAVE DOT VALUE
TWICE
DETERM I NE BYTE POS I T I ON OF THE DOT
SH I FT TO SET UP THE BITS FOR OUTPUT
STRIP OFF THE OTHER BITS
GET THE CURRENT BYTE
RECOVER XOR FLAG
IS IT ON
YES, XOR THE DOT
SET MASK TO REMOVE THE INDICATED BITS
J
AH
CLIAH
ALICL
OR I N THE NEW VALUE OF THOSE BITS
FINISH DOT
RESTORE THE BYTE I N MEMORY
RI:
MOV
PDP
"MP
R2,
XOR
.JMP
WR I TE_OOT
ES; [SI] ,AL
AX
RETURN FROM VIDEO 1/0
XOR DOT
EXC[US I VE OR THE DOTS
F1NISH UP THE WRIT'ING
V IDEO_RETURN
AL,CL
RI
ENOP
; ---- - - - - ------------ -- - - - - - - - ;
-- --------------
TH I S SUBROUT I NE DETERM I NES THE REGEN BYTE LOCAT I ON OF THE
I NO I CATED ROW COLUMN VALUE I N GRAPH I CS MODE.
ENTRY -OX = ROW VALUE (0-199)
CX = COLUMN VALUE 10-639)
EXIT -S I = OFFSET I NTO REGEN BUFFER FOR BYTE OF INTEREST
AH = MASK TO STRIP OFF THE BITS OF INTEREST
CL = BITS TO SHIFT TO RIGHT .JUSTIFY THE MASK IN AH
DH = # BITS IN RESULT
BX = MODIFIED
I - - - --- - - - -----'--- --- -- -- - - - - --- ---- -------- - - -R3
PROC
NEAR
"e
II.
120
1121
122
123
12'
125
12.
127
12e
129 0469
130
131
132
133
134 0469 93
135 046A BO
136 046C F6
1131 046E A8
1138 0410 14
1139 0412 05
1140 0415
1141 0415 96
1142 0416 9a
1143 0477 8B
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153 0479 BB
1154 047C 89
1 155 047F 80
I 156 0484 12
1151 0486 88
1158 0489 89
1159
1160
1161 048C
1 162 048C 22
1163
1164
1165
1166 048E 03
1161 0490 03
I I fl8 0~92 8A
1169
1170
1111
I 112 0494 2A
1173 0496
1114 0496 00
1115049802
1116 049A FE
I I 77 049C 75
1118 049E 8A
I 119 04AO 02
1180 04A2 C3
Ve .... sion 2.00
;----;-----
DETERMINE 1ST BYTE IN INDICATED ROW BY MULTIPLYING ROW VALUE BY 40
1 LOW BIT OF. RO" DETERMINES EVEN/ODD, 80 BYT~S/ROW )
XCHG
28
E2
08
03
IFD8
AX,BX
AL,40
WILL SAVE AL AND AH DURING OPERATION
MOV
MUL
DL
TESt
AL,008H
AX= ADDRESS OF START OF INDICATED ROW
TEST FOR EVEN/ODO ROW CALCULATED'
.JUMP I F EVEN ROW
OFFSET TO LOCAT'ION OF ODD ROWS AD.JUST
EVEN ROW
MOVE-PO I NTER TO S I
RECOVER AL AND AH VALUES
COLUMN VALUE TO OX
"Z
ADD
R'
XCHG
XCHG
SI,AX
AX,BX
DX,eX
AX,2000H-40
R4=
01
MOV
;-----
DETERMINE GRAPHICS MODE CURRENTLY
IN EFFECT
SET UP THE REGISTERS ACCORDING TO THE MODE
CH
MASK FOR LOW OF COLUMN ADDRESS ( 1/3 FOR HIGH/MED RES)
CL
# OF ADDRESS BITS IN COLUMN VALUE 1 3/2 FOR HIM )
BL
MASK TO SELECT BITS FROM POINTED BYTE 1 80H/COH FOR HIM)
8H
NUMBER OF VALID BITS IN POINTED BYTE ( 1/2 FOR HIM I
=
=
=
=
02CO
0302
3E 0049 R 06
06
0180
0103
MOV
MDV
CMP
BX,2COH
CX,302H
a!lCRT MOOE,6
MOV
BX,leOH
CX.703H
"C
MDV
RS
SET PARMS FOR MED RES
-
;
HANDLE IF MED RES
SET PARMS FOR HIGH
; -----
DETERM I NE BIT OFFSET I N BYTE FROM COLUMN MASK
;-----
DETERMINE BYTE OFFSET FOR THIS LOCATJON IN COLUMN
Rs,
EA
AND
EA
F2
Fl
SHR
ADD
MOV
;----C9
CH,DL
;
;
;
;
DX,CL
SI,OX
DH,BH
MULTIPLY BH
(VALID BITS
IN BYTE)
RE~
ADDRESS OF PEL WITI-:IIN BYTE TO CH
SH I FT BY CORRECT AMOUNT
I NCREMENT THE PO INTER
GET THE. OF BITS IN RESULT TO DH
BY CH
(BIT OFFSETI
LO~ATION
SUB
CL,CL
Z!==RO INTO STORAGE
RDR
AL,I
CL,CH
BH
LEFT ,JU:iTIFY VALUE IN AL (FOR WRITE)
ADD IN THE BIT OFFSET VALUE
LOOP CONTROL
ON EX IT, CL HAS COUNT TO RESTORE BITS
GET ~ASK TO AH
MOVE THE MASK TO CORRECT LOCATION
RETURN WITH EVERYTt"'IN~ SET UP
R6:
C8
CO
CF
F8
E3
EC
ADD
DEC
"NZ
MOV
SHR
~ET
R.
AH,BL
AH,CL
VIDEOl
5-l~3
IBM Personal
VIDEOI
1181
1162
1163
1164
1165
1166
1167
1188
1189
1190
1191
1192
1193
1194
1195
1 196
1197
I 198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
121 I
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1221
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
12bO
12bl
12b2
12b3
12b4
1265
1266
1267
1266
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1-12
06-[ 0-85
Version 2.00
Computer MACRO Assembler
--- 06/10/85
VIDEO DISPLAY 8105
04A3
R3
ENOP
; --------------------------------- ----- - ------ - -------;
SCROLL UP
;
THIS ROUTINE SCROLLS UP THE INFORMATION ON THE CRT
; ENTRY -;
CH,CL = UPPER LEFT CORNER OF REGION TO SCROLL
DH,oL = LOWER RIGHT CORNER OF REGION TO SCROLL
BOTH OF THE ABOVE ARE 1N CHARACTER pas I T IONS
BH = FILL VALUE FOR BLANKED LINES
AL = # LI NES TO SCROLL (AL=O MEANS BLANK THE ENTI RE FIELD)
DS
DATA SEGMENT
ES
REGEN SEGMENT
EX I T -NOTH I NG, THE SCREEN I S SCROLLED
=
=
~~~~~ ~~;
04A3
04A3 8A 08
04A5 8B C I
- ~~ - - - - -~~~~ - - - - ~~~~ - - - - -- - - -- - - - - - - -- - - -- - - - - - --
MOV
MDV
;-----
BL,AL
AX, CX
;
;
SAVE LINE COUNT IN BL
GET UPPER LEFT POS I TI ON
I NTO AX REG
USE CHARACTER SUBROUTINE FOR POSITIONING
ADDRESS RETURNED IS MULTI PL I EO BY 2 FROM CORRECT VALUE
04A 7 E8 0608 R
04AA 8B F8
CALL
"OY
GRAPH POSN
DI,AX-
;
SAVE RESULT AS DESTINATION ADDRESS
DETERMINE SIZE OF WINDOW
04AC 2B 0 I
04AE 81 C2 0101
04B2 CO E6 02
SUB
ADO
SAL
DX,CX
DX,IOIH
DH,2
ADJUST VALUES
MULTIPLY ROWS 8Y 4 AT 8 VERT DOTS/CHAR
AND EVENIODD ROWS
DE TERM I NE CRT MODE
04B5 80 3E 0049 R Db
04BA 73 04
eMF
JNe
04BC DO E2
04BE 01 E7
MEO I UM RES UP
SAL
oL,1
SAL
OJ ,I
# COLUMNS • 2, SINCE 2 BYTES/CHAR
OFFSET ·2 SINCE 2 BYTES/CHAR
DETERMINE THE SOURCE ADDRESS
04CO
04CO
04C 1
04C2
04C4
04C7
04C9
04CB
04CD
04CF
040 I
0403
0405
06
1F
2.4.
CO
74
8A
B4
F6
8B
03
8A
2A
E3 02
20
C3
50
E4
F7
FO
E6
E3
0407
0407
04DA
040E
04E2
04E4
E8
81
81
FE
75
0558 R
EE IFBO
EF IFBO
CC
FI
PUSH
POP
SUB
SAL
JZ
EO
ES
IN THE BUFFER
FIND SOURCE
GET SEGMENTS BOTH PO I NT I NG TO REGEN
OS
CH,CH
BL,2
ZERO TO HIGH OF COUNT REGI STER
MULTIPLY NUMBER OF LINES BY 4
I F ZERO, THEN BLANK ENT I RE FIELD
GET NUMBER OF LI NES IN AL
80 BYTES I ROW
DETERMINE OFFSET TO SOURCE
SET UP SOURCE
ADO I N OFFSET TO IT
NUMBER OF ROWS IN FIELD
DETERM I NE NUMBER TO MOVE
RII
"OY
"OY
"UL
AL,BL
AH,80
MOY
S 1,01
SI.AX
AH,DH
AH,BL
ADO
"OY
SUB
TEST FOR MEDIUM RES
FIND_SOURCE
iIICRT MOOE,6
R1
-
AH
MOVING ONE ROW AT A TIME, BOTH EVEN AND 000 FIELDS
ROW LOOP
MOVE ONE ROW
MOVE TO NEXT ROW
S I, 2000H-SO
01 ,2000H-80
NUMBER OF ROWS TO MOVE
AH
CONT I NUE TILL ALL MOVED
R8
LOOP THROUGH,
R8:
CALL
SUB
SUB
DEC
JNZ
RI1
FILL IN THE VACATED LINE(S)
04Eb
04Eb
04E8
04E8
04E6
04EF
04Fl
04F3
8A C7
MOV
AL,BH
CLEAR ENTRY
ATTRIBUTE TO FILL WITH
CALL
SUB
DEC
JNZ
RI8
DI,2000H-80
BL
RIO
v I OED_RETURN
CLEAR THAT ROW
POINT TO NEXT LINE
NUMBER oF' LINES TO FILL
CLEAR LOOP
EVERYTH I NG DONE
RIO :
E8
8I
FE
75
E9
0571 R
EF I FBO
C8
F5
012E R
04F6
04F6 8A DE
04F8 EB EC
04FA
""P
RII:
BLANK FIELD
SET BLANK COUNT TO EVERYTH I NG IN FIELD
"Oy
BL,DH
R9
CLEAR THE FIELD
J"P
GRAPHICS_UP
ENoP
1 -- ---------- --- - ------------ - ------------------------I SCROLL DOWN
;
TH I S ROUT I NE SCROLLS DOWN THE I NFoRMAT I ON ON THE CRT
; ENTRY -1 CH, CL
UPPER LEFT CORNER OF REG I ON TO SCROLL
1 DH, oL = LOWER RIGHT CORNER OF REG I ON TO SCROLL
;
BOTH OF THE ABOVE ARE I N CHARACTER POS! T IONS
;
BH
FILL VALUE FOR BLANKED LINES
;
AL = # LINES TO SCROLL (AL=O MEANS BLANK THE ENT I RE FIELD ~
;
OS
DATA SEGMENT
ES" REGEN SEGMENT
:
; EXIT -;
NOTH I NG, THE SCREEN I S SCROLLED
=
=
=
;
04FA
04FA FD
04FB 8A 08
04FD 8B C2
- - - -- - - - - - -- --- ---- -- - - - -- ----- - - - - - - - - - - - - - - - - - - - - - - - --
GRAPH I CS DOWN
STo
MDV
MOV
;
;-----
04FF E8 0608 R
0502 88 F8
0504 28 01
0506 81 C20101
050A CO E6 02
NEAR
;
SET DIRECTION
SAVE LINE COUNT IN BL
; GET LOWER RIGHT POS I T I ON
I
GRAPH POSN
01, AX-
I
SAVE RESULT AS DESTINATION ADDRESS
DETERMINE SIZE OF WINDOW
SUB
ADO
SAL
DX,CX
DX,IOIH
DH.2
ADJUST VALUES
MULTIPLY ROWS BY 4 AT 8 VERT DOTS/CHAR
AND EVEN/ODD ROWS
DETERM I NE CRT MODE
0500 80 3E 0049 R 06
0512 73 05
5-154
VIDEO 1
I NTO AX REG
USE CHARACTER SUBROUT I NE FOR POS I T I ON I NG
ADDRESS RETURNED IS MULTIPLIED BY 2 FROM CORRECT VALUE
CALL
"OY
;-----
PROC
BL,AL
AX,DX
eMP
JNe
PCRT MODE,6
R12 -
TEST FOR MED I UM RES
F IND_SOURCE_DOWN
IBM Personal Computer MACRO Assembler
VIOEOI --- 06{10{85
VIDEO DISPLAY BIOS
1295
1296 0514 DO E2
1297 0516 01 E7
1298051847
1299
1300
1301 0519
1302 0519 06
1303 051A IF
1304 051B 2A ED
1305 0510 81 C7 OOFO
1306 0521 CO E3 02
1307 0524 74 2E
1308 0526 8A C3
1309 0528 84 50
1310 052A F6 E4
1311 052C 8B F7
1312 052E 28 FO
1313 0530 8A E6
13140532 2A E3
1315
1316
1317 0534
1318 0534 E8 0558 R
1319 0537 81 EE 2050
1320 0538 81 EF 2050
1321 053F FE CC
1322 0541 75 FI
1323
1324
1325 0543
1326 0543 8A C7
1327 0545
1328 0545 E8 0571 R
1329 0548 81 EF 2050
1330 054C FE C8
1331 054E 75 F5
1332 0550 FC
13330551 E9 012E R
1334
1335 0554
1336 0554 8A DE
1337 0556 EB EB
1338 0558
1339
1340
1341
1342 0558
1343 0558 8A CA
1344 055A 56
1345 055B 57
1346 055C F3{ A4
1347 055E 5F
1348 055F 5E
1349 0560 81 C6 2000
1350 0564 81 C1 2000
1351 0568 56
1352 0569 51
1353 056A 8A CA
1354 056C F3 { A4
1355 056E 5F
1356 056F 5E
1357 0570 C3
1358 0571
1359
1360
1361
1362 0511
1363 0571 8A CA
1364 0573 51
1365 0574 F3{ AA
1366 051& 5F
1361 0577 81 C1 2000
1368051857
t 369 051C 8A CA
1310 051E F3{ AA
1371 0580 5F
13720581 C3
1373 0582
1374
1375
1376
1377
1318
t 379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405 0582
1406 0582 84 00
1407 0584 50
1408
Version 2.00
1-13
06-10-85
MED I UM RES DOWN
SAL
Dl,l
SAL
DI,I
INC
DI
; # COLUMNS • 2, SINCE 2 BYTES (CHAR
; OFFSET -2 SINCE 2 BYTES/CHAR
; PO I NT TO LAST BYTE
DETERM I NE THE SOURCE ADDRESS
ES
OS
PUSH
POP
SUB
ADO
SAL
CH,CH
Dl,240
BL,2
RI.
AL,BL
AH,80
JZ
"OV
"OV
ZERO TO HIGH OF COUNT REGISTER
PO I NT TO LAST ROW OF PIXELS
MULTIPLY NUMBER OF LINES BY 4
I F ZERO I THEN BLANK ENT I RE F lELa
GET NUMBER OF L [NES IN AL
80 B'l'TES{ROW
DE TERM I NE OFFSET TO SOURCE
SET UP SOURCE
SUBTRACT THE OFFSET
NUMBER OF ROWS IN FIELD
DE TERM I NE NUMBER TO MOVE
AH
SI,DI
S 1 ,AX
AH,DH
AH,BL
"UL
"OV
SUB
"OV
SUB
lOOP THROUGH,
RI7
CALL
SUB
SUB
MOV I NG ONE ROW AT A T1 ME I BOTH EVEN AND ODD FIELDS
ROW LOOP DOWN
MOVE ONE-ROW
MDVE TO NEXT RDW
SI,2000H+80
DI,2000H+80
DEC
AH
NUMBER OF ROWS TO MOVE
CaNT I NUE TILL ALL MOVED
RI3
JNZ
FILL
I N THE BUFFER
FIND SOURCE DOWN
BOTH-SEGMENTS TO REGEN
IN THE VACATED LiNEIS)
MOV
AL ,BH
CALL
SUB
DEC
...INZ
R 18
DI,2000H+80
BL
R15
CLEAR ENTRY DOWN
ATTRIBUTE TO FILL WITH
CLEAR LOOP DOWN
CLEAR-A ROW
PO I NT TO NEXT Ll NE
NUMBER OF LINES TO FILL
CLEAR LOOP DOWN
RESET-THE DIRECTION FLAG
EVERYTH I NG DONE
R15:
CLO
...IMP
VIDEO_RETURN
R16:
MOV
...IMP
GRAPHICS_DOWN
ROUTINE TO MOVE ONE ROW OF
RI7
PROG
"OV
5J
DI
REP
POP
POP
ADO
ADO
MOVSB
"OV
REP
POP
POP
RET
RI7
INFORMATION
NEAR
Gl,DL
PUSH
PUSH
PUSH
PUSH
BLANK F [ELD DOWN
SET BLANK COUNT TO EVERYTH I NG 1N F [ELD
CLEAR THE FIELD
BL,DH
R 14
ENDP
NUMBER OF BYTES
IN THE ROW
SAVE POINTERS
MOVE THE EVEN FIELD
DJ
51
SI, 2O OOH
DI,2000H
51
POINT TO THE ODD FIELD
SAVE THE POINTERS
COUNT BACK
MOVE THE ODD FIELD
DI
CL,DL
MOVSB
DI
POINTERS BACK
RETURN TO CALLER
51
ENDP
CLEAR A SINGLE ROW
RIB
PROC
"OV
PUSH
REP
POP
ADD
RIB
NEAR
CL,DL
NUMBER OF BYTES IN FIELD
SAVE POINTER
STORE THE NEW VALUE
PO I NTER BACK
POINT TO ODD FIELD
DI
STOSB
01
DI,2000H
PUSH
DI
"OV
REP
POP
RET
CL,DL
STOSB
;
FILL THE ODD FIELD
;
RETURN TO CALLER
DJ
ENDP
GRAPHICS WRITE
THIS ROUTINE WRITES THE ASCII CHARACTER TO THE CURRENT
POS I T I ON ON THE SCREEN.
ENTRY -AL :: CHARACTER TO IVR 1 TE
BL :: COLOR ATTRIBUTE TO BE USED FOR FOREGROUND COLOR
IF BIT 7 IS SET, THE CHAR IS XoR'D INTO THE REGEN BUFFER
10 I S USED FOR THE BACKGROUND COLOR)
CX :: NUMBER OF CHARS TO IVR I TE
DS :: DATA SEGMENT
ES :: REGEN SEGMENT
EXIT -NOTH I NG I S RETURNED
GRAPHICS READ
THIS ROUTINE READS THE ASCI I CHARACTER AT THE CURRENT CURSOR
pas I T I ON ON THE SCREEN BY MATCH I NG THE DOTS ON THE SCREEN TO THE
CHARACTER GENERATOR CODE POINTS
ENTRY -NONE
10 I S ASSUMED AS THE BACKGROUND COLOR)
EXIT -AL
CHARACTER READ AT THAT POSITION (0 RETURNED IF NONE FOUND)
=
FOR BOTH ROUTINES, THE IMAGES USED TO FORM CHARS ARE CONTAINED IN ROM
FOR THE 1 ST 128 CHARS.
TO ACCESS CHARS I N THE SECOND HALF, THE USER
MUST INITIALIZE THE VECTOR AT INTERRUPT lFH ILOCATION 0007CH) TO
POINT TO THE USER SUPPLIED TABLE OF GRAPHIC IMAGES 18X8 BOXES).
FA I LURE TO DO SO WILL CAUSE I N STRANGE RESULTS
ASSUME
GRAPH I CS WR I TE
Mov
PUSH
DS: DATA, ES ;DATA
PROC
NEAR
AH,O
AX
ZERO TO HIGH OF CODE PO I NT
SAVE CODE PO I NT VALUE
VIDEO 1
5-155
II;3M Personal Computer MACRO Assembler
VIDEOI --- 06/10165
VIDEO DISPLAY B[OS
1409
1410
141 1 0585 E6 0605 R
1412 0588 6B F8
1413
1414
1415
1416 056A 58
1411 058B 3C 80
1418058073 06
1419
1420
1421
1422 058F BE 0000 E
1423 0592 OE
1424 0593 EB OF
1425
1426
1421
1428 0595
1429 0595 2C 80
1430 0597 IE
1431 0598 2B F6
1432 059A 8E DE
1433
1434 059C C5 36 007C R
1435 05AO 8C DA
1436
1437 05A2 IF
1438 05A3 52
1439
1440
1441
1442 05A4
1443 05A4 Cl EO 03
1444 05A7 03 FO
1445 05A9 80 3E 0049 R 06
1446 05AE IF
1441 05AF 12 2C
1448
1449
1450 0581
1451 05Bl 51
1452 05B2 56
1453 0583 86 04
1454 0585
1455 0585 AC
1456 0586 F6 C3 80
1457 05B9 75 16
1458 05BB AA
1459 058C AC
1460 0580
146 I 05BD 26: 88 85 1FFF
1462 05C2 83 C1 4F
1463 05C5 FE CE
1464 05C7 15 EC
1465 05C9 5E
1466 05CA SF
1461 05Ce 47
1468 05CC E2 E3
1469 05CE E9 012E R
1410
1471 0501
1412 0501 26: 32 as
1413 0504 AA
1474 0505 AC
1475 0506 26: 32 85 IFFF
1416 0508 E8 EO
1477
1478
1419 0500
1480 0500 8A 03
1461 050F 01 E7
1462
1463 05El 80 E3 03
1484 05E4 BO 55
1485 05E6 F6 E3
1486 05E8 8A D8
1487 05EA 8A F8
1488 05EC
1+89 05EC 57
1490 05Eo 56
1491 OSEE B6 04
1492 05FO
1493 05FO AC
1494 05F 1 E8 06AO R
1495 05F4 23 C3
1496 05F6 86 EO
1497 05F8 F6 C2 80
1498 05FS 74 03
1499 05Fo 26; 33 05
1500 0600 '
1501 0600 26: 89 as
1502 0603 AC
1503 0604 E8 06Ao R
1504 0601 23 C3
1505 0609 86 EO
1506 060B F6 C2 80
1507 060E 74 05
1508 0610 26: 33 85 2000
15090615
1510 0615 26: 89852000
151' 061A 83 C7 50
1512 0610 FE CE
1513 061F 75 CF
15140621 5E
1515 0622 5F
1516 0623 47
1517 062447
1518 0625 E2 C5
1519 0627 E9 012E R
1520 Q62A
1521
1522
5-156
VIDEO 1
;-----
Version 2.00
DETERMINE PoSIT[ON IN REQEN BUFFER TO PUT CODE POINTS
CALL
"OY
;-----
;
;
52.
OI,AX
IMAQE IS
MOV
PUSH
,JMP
;
;
;
AX
AL,80H
51
IN F[RST HALF, CONTAINED
S I ,OFFSET CRT CHAR GEN
CS
SHORT S 2
IMAQE IS IN SECOND HALF,
;
;
;
SUS
PUSH
SUS
"OY
ASSUME
LOS
"OY
ASSUME
POP
PUSH
AL, BOH
OS
SI,SI
OS,SI
OS:ABSO
Sl,olIEXT PTR
OX ,OS OS:DATA
OS
OX
I~
ROM
OFFSET OF I MAGES
SAVE SEGMENT ON STACK
DETERM I NE _MODE
EXTEND CHAR
ZERO ORIGIN FOR SECOND HALF
SAVE DATA POINTER
ESTABLISH VECTOR ADDRESSINQ
GET THE OFFSET OF THE TABLE
GET THE SEGMENT OF THE TABLE
RECOVER DATA SEGMENT
SAVE TABLE SEGMENT ON STACK
DETERMINE GRAPHICS MODE IN OPERATION
52:
SAL
ADO
C"P
POP
JC
~;~---
RECOVER CODE PO I NT
[S IT IN SECOND HALF
YES
IN USER MEMORY
S1:
;-----
FIND LOCATION [N REQEN BUFFER
REQEN PO INTER IN 0 I
DETERMINE REQION TO GET CODE POINTS FROM
POP
C"P
JAE
:-----
1-14
06-10-85
AX,3
SI,AX
IlICRT _MODE, 6
OS
51
DETERM I NE MODE
MULTIPLY CODE POINT VALUE BY 8
S I HAS OFFSET OF DES [RED CODES
RECOVER TABLE POINTER SEGMENT
TEST FOR MED I UM RESOLUT I ON MODE
HIGH RESOLUT I ON MODE
PUSH
PUSH
"OY
HIGH CHAR
SAVE-REGEN PO INTER
SAVE CODE PO INTER
NUMBER OF TIMES THROUGH LOOP
01
51
OH,4
S4:
LODSa
TEST
JNZ
STOSB
LODSB
QET BYTE FROM CODE PO I NTS
SHOULD WE USE THE FUNCT I ON
TO PUT CHAR IN
STORE I N REGEN BUFFER
BL,80H
5.
S5;
"OY
ADO
DEC
JNZ
POP
POP
INC
LOOP
J"P
ES: 101 +2000H-1] ,AL
01,79
OH
STORE I N SECOND HALF
MOVE TO NEXT ROW I N REGEN
DONE WITH LOOP
5'
51
01
01
53
V [OED_RETURN
RECOVER REGEN PO INTER
PO I NT TO NEXT CHAR POS I T I ON
MORE CHARS TO WRITE
S6:
XOR
STOSS
Loose
XOR
,JMP
AL,ES] [01]
EXCLUS I VE OR WITH CURRENT
STORE THE CODE PO I NT
AGAIN FOR ODD FIELD
AL,ES: [01 +2000H-1]
55
BACK TO MA [NSTREAM
MEDIUM RESOLUTION WRITE
"OY
SAL
DL,BL
DI,I
AND
"OY
MUL
"OY
"OY
BL,3
AL,055H
SL
SL,AL
SH,AL
PUSH
PUSH
"OY
OH,4
MED RES WR I TE
SAVE-H[GH COLOR BIT
QFFSET·2 SINCE 2 BYTES/CHAR
EXPAND BL TO FULL WORD OF COLOR
I SOLATE THE COLOR B ITS ~ LOW 2 BiTS )
GET BIT CONVERSION MULT[PLIER
EXPAND 2 COLOR BITS TO 4 REPLICATIONS
PLACE BACK IN WORK REGISTER
EXPAND TO 8 REPL I CAT IONS OF COLOR BITS
MEO CHAR
SAVE-REGE"1 POINTER
SAVE THE CODE PO INTER
NUMBER OF LOOPS
Loose
CALL
AND
XCHG
TEST
JZ
XOR
521
AX,BX
AH,AL
DL,80H
510
AX,ES: [01
GET CODE POINT
DOUBLE UP ALL THE BITS
CONVERT TO FOREGROUND COLOR ( 0 BACK
SWAP HIGH /LOW BYTES FOR WORD MOVE
IS THIS XOR FUNCTION
NO, STORE IT IN AS IT [S
DO FUNCTION WITH LOWIHIGH
"oy
ES:[O[],AX
LOOSB
CALL
AND
XCHG
TEST
JZ
XOR
521
AX,SX
AH,AL
DL, BOH
511
AX,ES: [01 +2000H]
S8:
01
51
S9:
510:
J
STORE FIRST BYTE HIGH,
GET CODE PO I NT
SECOND LOW
CONVERT TO COLOR
SWAP HIGH/LOW BYTES FOR WORD MOVE
AGAIN,' 15 THIS XOR FUNCTION
NO, JUST STORE THE VALUES
FUNCTION WITH F[RST HALF LOW
S 11 :
MOV
ADD
DEC
,JNZ
POP
POP
INC
INC
LOOP
,JMP
GRAPHICS WRITE
ES: [0 I +2000H] ,AX
Dli80
DH
S9
SI
DI
01
DI
S8
v IDEO RETURN
ENDP-
,-------=--- ------------------ -- --- --- --;
GRAPHICS READ
STORE SECOND PORT I ON H [GH
POINT TO NEXT LOCATION
KEEP GOING
RECOVER CODE PO INTER
RECOVER REGEN PO INTER
POINT TO NEXT CHAR POS[TION
MORE TO WR 1TE
)
IBM Personal Computer MACRO Assembler
VIDEO! --- 06/10/e5
VIDEO DISPLAY 810S
1523
1524 062A
1525 062A E8 0605 R
1526 0620 88 FO
1527 062F 83 EC 08
1528 0632 88 EC
1529
1530
1531
1532 0634 80 3E 0049 R 06
1533 0639 06
1534 063A IF
1535 063B 72
1536
1537
1538
1539
1540 0630 86 04
1541 063F
1542 063F 8A 04
15430641 884600
1544 0644 45
1545 0645 8A 84 2000
1546 0649 88 46 00
1547 064C 45
1548 0640 83 C6 50
1549 0650 FE CE
1550 0652 75 E8
1551 0654 E8 16
1552
1553
1554 0656
1555 0656 01 E6
1556 0658 86 04
1557 065A
1558 065A E8 06BC R
1559 0650 81 C6 IFFE
1560 0661 E8 06BC R
1561 066481 EE lFB2
1562 0668 FE CE
1563 066A 75 EE
1564
1565
1566 066C
1567 066C SF 0000 E
1568 066F OE
1569 0670 07
15700671 83 ED De
1571 0674 8B F5
1572 0676 FC
1573 0677 80 00
1574 0679
15750679 16
1576 067A IF
1577 0678 BA 0080
1578 067E
1579 067E 56
1580 067F 57
1581 0680 89 0004
1582 0683 F3/ A7
1583 0685 5F
1584 0686 5E
15850687 74 IE
1586 0689 FE CO
1587 0688 83 C7 08
1588 068E 4A
1589 068F 75 ED
1590
1591
1592
15930691 3C 00
15940693 74 12
1595 0695 2B CO
1596 0697 8E 08
1597
1598 0699 C4 3E 007C R
1599 0690 8C CO
1600 069F OB C7
1601 06AI 7404
1602 06A3 BD 80
1603 06A5 E8 02
1604
1605
1606
1607 06A7
1608 06A7 83 C4 08
1609 06AA E9 012E R
161D06AD
161 I
1612
1613
1614
1615
1616
161706AD
1618 06AO 51
1619 06AE 89 0008
1620 0681
1621 0681 DO C8
1622 0683 Dl DO
1623 06B5 01 FD
1624 0687 E2 Fe
1625
1626 0689 95
1627 068A 59
1628 0688 C3
1629 06BC
1630
1631
1632
1633
1634
1635
1636
Version 2.00
~;~;~~~~- R~~~---;;~~--CALL
MOV
SUB
1-15
06-10-85
NEAR
S26
SI,AX
SP,8
BP,SP
1010'1
CONVERTED TO OFFSET I N REGEN
SAVE IN 51
ALLOCATE SPACE FOR THE READ COOE POINT
PO I NTER TO SAVE AREA
DETERM I NE GRAPH I CS MOOES
eMP
PUSH
POP
Je
«lCRT MOOE,6
E5
as
513
PO I NT TO REGEN SEGMENT
MED I UM RESOLUT I ON
HIGH RESOLUT I ON READ
GET VALUES FROM REGEN BUFFER ANa CONVERT TO CODE PO I NT
MOV
DH,4
NUMBER OF PASSES
S12:
AL, [SI 1
[8P] ,AL
BP
AL,[SI+2000Hj
[8P] ,AL
BP
S 1,80
OH
Sl2
SHORT 515
MaY
MaY
[NC
MaY
MaY
[NC
AOO
OEC
JNZ
JMP
GET FIRST BYTE
SAVE I N STORAGE AREA
NEXT LOCAT I ON
GET LOWER REG I ON BYTE
ADJUST AND STORE
PO I NTER I NTO REGEN
LOOP CONTROL
DO I T SOME MORE
GO MATCH THE SAVED CODE POINTS
MED 1UM RESOLUT I ON READ
513:
MED RES READ
OFI"SET"'2" SINCE 2 BYTES/CHAR
NUMBER OF PASSES
5AL
MaY
5 1,1
DH,4
CALL
AOO
CALL
SUB
OEC
JNZ
523
5 I, 2000H-2
523
SI,2000H-80+2
OH
Sl4
S14:
SAVE AREA HAS CHARACTER
;~~~--
GET BYTES FROM REGEN INTO SINGLE SAVE
GO TO LOWER REG I ON
GET THIS PAIR INTO SAVE
ADJUST PO I NTER BACK I NTO UPPER
KEEP GO I NG UNT I L ALL 8 DONE
[N
[T. MATCH IT
FIND CHAR
ESTABLISH ADDRESSING
MaY
PUSH
POP
SUB
MaY
CLO
MaY
DI,OFFSET CRT_CHAR_GEN
e5
E5
8P,8
SI,ap
AL,O
ENSURE 0 I RECT I ON
CURRENT CODE POINT BEING MATCHED
PUSH
POP
MaY
55
as
DX,I28
EST ABL I SH ADDRESS I NG TO STACK
FOR THE STR I NG COMPARE
NUMBER TO TEST AGA I NST
SI
SAVE SAVE AREA POINTER
SAVE CODE POINTER
NUMBER OF WORDS TO MATCH
COMPARE THE 8 8YTES AS WORDS
RECOVER THE POINTERS
CODE POINTS IN CS
ADJUST PO I NTER TO START OF SAVE AREA
S 16:
SI7 :
PUSH
PUSH
MaY
REPE
POP
POP
JZ
[NC
AOO
OEC
JNZ
O[
CX,4
CMPSW
O[
SI
518
AL
DI,8
I F ZERO FLAG SET, THEN MATCH OCCURRED
NO MATCH, MOVE ON TO NEXT
NEXT CODE PO I NT
LOOP CONTROL
00 ALL OF THEM
ox
SIT
CHAR NOT MATCHED, MIGHT BE
CMP
JE
SUB
MaY
ASSUME
LE5
MaY
OR
JZ
MaY
JMP
ASSUME
;
-~;;~~~- ~~~~
;
;
;
AL<> 0 IF ONLY I ST HALF SCANNED
1F = 0, THEN ALL HAS BEEN SCANNED
SIB
AX,AX
DS,AX
OS :ABSO
DI,@EXT PTR
AX ,ES
AX,DI
ESTABLISH ADDRESSING TO VECTOR
GET PO INTER
SEE I F THE PO INTER REALLY EX I STS
IF ALL 0, THEN ~OESN'T EXIST
NO SENSE LOOK I NG
OR I GIN FOR SECOND HALF
GO BACK AND TRY FOR IT
SIB
AL,I28
Sl6
DS:DATA
CHARACTER
AOO
JMP
GRAPH I CS _READ
IN USER SUPPLIED SECOND HALF
AL,O
I S FOUND
1 AL=O
SP,8
V IDEO RETURN
ENDP -
I F NOT FOUND 1
;
;
READJUST THE STACK,
ALL DONE
THROW AWAY SAVE
- - - --- - ----------
TH I S ROUT I NE TAKES THE BYTE IN AL AND DOUBLES ALL
OF THE BITS, TURNING THE 8 BITS INTO 16 BITS.
THE RESULT I S LEFT ! N AX
;; ~ - - -
- -
;~;~
- - - - ~~~;
PUSH
MOV
CX
CX,8
SAVE REGI STER
SH I FT COUNT REG I STER FOR ONE BYTE
ROR
RCR
AL, I
BP,!
BP, I
522
SHIFT BITS, LOW BIT INTO CARRY FLAG
MOVE CARRY FLAG (LOW BIn INTO RESULTS
SIGN EXTEND HIGH BIT (DOUBLE IT)
REPEAT FOR ALL 8 BITS
AX,BP
MOVE RESULTS TO PARAMETER REG I STER
RECOVER REGI STER
ALL DONE
S22 :
5AR
LOOP
2[
XCHG
POP
RET
ENDP
CX
MED READ BYTE
THIS ROUTINE WILL TAKE 2 BYTES FROM THE REGEN BUFFER,
COMPARE AGA I NST THE CURRENT FOREGROUND COLOR, AND PLACE
THE CORRESPONDING ON/OFF BIT PATTERN INTO THE CURRENT
POSITION IN THE SAVE AREA
ENTRY --
VIDEO 1
5-157
IBM Personal Computer MACRO Assembler
VIDEOI --- 06/10/85
VIDEO DISPLAY BIOS
1637
1638
1639
I b40
1 b41
1 b42
1643
1644
1645
1646
1 b47
1648
1649
lb50
1 b51
1652
1653
1654
1655
1656
Ib57
1658
1659
1660
I bIOI
1662
1663
I b64
1665
1666
1667
Version 2.00
1-16
06-10-85
;
SI,OS = POINTER TO REGEN AREA OF
;
BX = EXPANDED FOREGROUND COLOR
BP::: POINTER TO SAVE AREA
;
; EXIT -;
SI AND BP ARE INCREMENTED
INTEREST
~~~-----;;~~-----------------------------------------
06BC
06BC
06BO
06BF
06C2
06C4
06C4
ObC6
06C8
06C9
06C9
06CB
06CE
0600
0603
0604
0605
AD
86 C4
89 COOO
82 00
LODSW
XCHG
MOV
MOV
S24:
85 CI
74 01
F9
TEST
JZ
STC
AX,CX
IS THIS SECTION BACKGROUND?
IF ZERO, IT IS BACKGROUND (CARRY:::OI
WASN' T, SO SET CARRY
525
S25:
DO
CI
73
8S
45
C3
02
E9 02
F4
56 00
523
; ----;
,
;
1b68
1E>69
16070
16011 06005
Ib12 0605 AI
I b13 0608
1614 0608
1675 0609
1616 060B
1617 0600
1618 06EI
1679 06E4
1680 06E6
1681 06E8
1682 06E9
1 b83 06EA
1684
1685
1686
1681
1688
1689
1690
1691
1692
1693
1694
1695
1696
1691
1698
1699
1100
1701
1702
1703
1704
1705
1706
1707 06EA
1708 06EA
1709 06EB
1710 06EC
1 71 I 06EE
1712 06F2
1713 06F4
1714
1115
1116
1717 06F5
1118 06F7
1119
1120
1121 06F9
1122 06F9
1123 06FB
1724 06FE
1725
1726
1727
t 728 0700
1729 0702
1730 0106
1731 0708
1732 070A
1733 0100
1734
1735
1736 010F
1737 070F
11380711
1139
1140
1741
11420713
1743 0716
11440718
1745 071A
1746 071C
1747 071E
1748 0720
1749 0720
1750 0722
GET FIRST BYTE AND SECOND BYTES
SWAP FOR COMPARE
2 BIT MASK TO TEST THE ENTRIES
RESULT REG I STER
AL,AH
CX,OCOOOH
DL, 0
53
8B
8A
F6
Cl
2A
03
5B
C3
08
C4
26 004A R
EO 02
FF
C3
MOVE THAT B IT I NTO THE RESULT
MOVE THE MASK TO THE RIGHT BY 2 BITS
00 IT AGAIN IF MASK DIDN'T FALL OUT
STORE RESULT IN SAVE AREA
ADJUST PO INTER
ALL DONE
DL,'
CX,2
52.
[BPJ,OL
BP
-- - ---------- -- -- --- - ---- ------ - -- --
V4 POSITION
THIS ROUTINE TAKES THE CURSOR POSITION CONTAINEO IN
THE MEMORY LOCATION, AND CONVERTS IT INTO AN OFFSET
INTO THE REGEN BUFFER, ASSUMING ONE BYTE/CHAR.
FOR MEDIUM RESOLUTION GRAPHICS, THE NUMBER MUST
BE DOUBLED.
ENTRY -- NO REGISTERS,MEMORY LOCATION @CURSOR POSN IS USED
EXIT-AX CONTAINS OFFSET INTO REGEN BUFFER
~~~
0050 R
RCL
SHR
JNC
MOV
INC
RET
ENDP
-- -- - ;;~~ - - - - ~~~; ---- - - - - - - - - - - - ---- - --
MOV
AX ,!PCURSOR POSN
GET CURRENT CURSOR
LABEL
NEAR
GRAPH PQSN
PUSH
ex
SAVE REGISTER
MOV
BX,AX
SAVE A COPY OF CURRENT CURSOR
MOV
AL,AH
GET ROWS TO AL
MUL
BYTE PTR !PCRT COLS
MULTIPLY BY BYTES/COLUMN
SHL
AX,2
MULTIPLY· 4 SINCE 4 ROWS/BYTE
I SOLATE COLUMN VALUE
SUB
BH,BH
ADD
AX ,ex
DETERM I NE OFFSET
POP
BX
RECOVER PO INTER
RET
ALL DONE
S26
ENDP
: --- WR I TE_ TTY -------- ------------------------ -------------------------------THIS INTERFACE PROVIDES A TELETYPE LIKE INTERFACE TO THE
V IDEO CARDS.
THE J NPUT CHARACTER IS WR I TTEN TO THE CURRENT
CURSOR POSITION, AND THE CURSOR IS MOVED TO THE NEXT POSITION.
IF THE CURSOR LEAVES THE LAST COLUMN OF THE FIELD, THE COLUMN
IS SET TO ZERO, AND THE ROW VALUE I S INCREMENTED.
I F THE ROW
ROW VALUE LEAVES THE FIELD, THE CURSOR IS PLACED ON THE LAST ROW,
FIRST COLUMN, AND THE ENTIRE SCREEN IS SCROLLED UP ONE LINE.
WHEN THE SCREEN I S SCROLLED UP, THE ATTR I BUTE FOR FILL I NG THE
NEWL Y BLANKED LINE I S READ FROM THE CURSOR POS I T I ON ON THE PREV I OUS
LINE BEFORE THE SCROLL, IN CHARACTER MODE.
IN GRAPHICS MODE,
THE 0 COLOR IS USED.
ENTRY -(AH)
CURRENT CRT MODE
( AL J
CHARACTER TO BE WR I TTEN
NOTE THAT BACK SPACE, CARRIAGE RETURN, BELL AND LINE FEED ARE
HANDLED AS COMMANOS RATHER THAN AS DISPLAY GRAPHICS CHARACTERS
(BL J
FOREGROUND COLOR FOR CHAR WR I TE IF CURRENTLY I N A GRAPH I CS MODE
EX I T -ALL REGISTERS SAVED
=
=
=
;
50
50
B4 03
8A 3E 0062 R
CD 10
58
----------- -- - - - - - - - - - -- - -- - - - - - - - - - - - - - - - -- -- -- - - - - - --- - - - - -- - - - -- - - - - - - - - - --
ASSUME
WRITE TTY
PUSH
PUSH
MOV
MOV
INT
POP
;-----
DS:DATA
PROC
NEAR
AX
AX
AH,03H
~~H (tACT I VE_PAGE
SAVE REGISTERS
SAVE CHARACTER TO WR I TE
GET CURRENT PAGE SETTI NG
READ THE CURRENT CURSOR pas I TI ON
RECOVER CHARACTER
AX
OX NOW HAS THE CURRENT CURSOR POSITION
3C 00
7646
eMP
JBE
B4 OA
B9 000 I
CD 10
MOV
MOV
INT
I SIT CARR I AGE RETURN OR CONTROL
GO TO CONTROL CHECK S I FIT I S
AL,CR
U8
WR I TE THE CHAR TO THE SCREEN
AH,OAH
CX,I
10H
WR I TE CHARACTER ONLY COMMAND
ONL Y ONE CHARACTER
WR I TE THE CHARACTER
POS I T I ON THE CURSOR FOR NEXT CHAR
FE
3A
75
B2
80
15
C2
1 b 004A R
33
00
FE 18
2A
INC
CMP
JNZ
MOV
eMP
JNZ
OL
DL, BYTE PTR @CRT COLS
U1
DL,O
OH,25-1
TEST FOR COLUMN OVERFLOW
SET CURSOR
COLUMN FOR CURSOR
CHECK FOR LAST ROW
SET_CURSOR_INC
UO
SCROLL REQU I RED
MOV
INT
B4 02
CO 10
5-158
;----AO
3C
12
3C
B1
75
0049 R
04
06
07
00
06
AH,02H
10H
MOV
eMP
Je
CMP
MOV
JNE
AL,@CRT MODE
AL,4
U2
AL,7
SH,O
MOV
INT
AH,08H
10H
U3
U2:
B4 08
CD 10
VIDEO 1
:
SET THE CURSOR
DETERMINE VALUE TO FILL WITH DURING SCROLL
GET THE CURRENT MODE
;
READ-CURSOR
FILL WITH BACKGROUND
SCROLL-UP
READ-CURSOR
GET READ CURSOR COMMAND
READ CHAR/ATTR AT CURRENT CURSOR
IBM Personal Computer MACRO Assembler
VIDEOI --- 06/10/85
VIDEO DISPLAY BIOS
1151
1152
1153
1154
1155
1156
0124
0726
0126
0129
012B
0720
1751 0131
8A Fe
1-11
06-10-85
Version 2.00
MOV
8H,AH
MOV
SUB
MOV
MOV
DEC
AX,0601H
CX,CX
OH,25-1
DL ,8YTE PTR PCRT_COLS
OL
STORE IN 8H
SCROLL-UP
SCROLL ONE LINE
UPPER LEFT CORNER
LOWER RIGHT ROW
LOWER RIGHT COLUMN
U3:
BS 060 I
2B C9
B6 18
8A 16 004A R
FE CA
1156 0733
17590733 CO 10
1760 0135
1161 0135 58
1162 0136 E9 0 12E R
1163
1164 0139
1165 0139 FE C6
1166 0138
1161 0138 84 02
1168 0130 E8 F4
\ 169
1170
1711 013F
1112 013F 74 13
11730141 3C OA
17140143 14 13
1715 0745 3C 01
1716 0741 74 16
1771 0149 3C 08
1718 0148 15 AC
1719
1180
1781
1182 0740 OA 02
1183 014F 74 EA
1184 0151 4A
1185 0152 E8 El
1186
\ 187
1188
1189 0154
1190 0154 82 00
1191 0756 E8 E3
1192
1193
1194
t 195 0158
1196015880 FE 18
1191 0158 15 DC
1198 0750 E8 80
1199
1800
1801
1802 075F
1803 015F B9 0533
1804016283 IF
1805 0164 E8 0000 E
180& 07&1 E8 CC
1801 0169
1808
1809
1810
1811
1812
1813
1814
1815
181 &
1811
1818
1819
1820
1821
1822
1823 0169 03 03 05 05 03 03
1824
03 04
1825
1826
1821 0111
182B 0111 84 00
1829011388 160063 R
1830 0111 83 C2 06
1831 011A EC
1832 0118 A8 04
1833 0110 14 03
1834 011F E9 0603 R
1835
INT
IDH
POP
JMP
AX
V IDEO_RETURN
INC
DH
MDV
JMP
AH,02H
U4
US:
U6:
SET-CURSOR-I NC
NEXT ROW
SET-CURSOR
Ul:
1-----
ESTABLISH THE NEW CURSOR
CHECK FOR CONTROL CHARACTERS
U8:
JE
CMP
JE
CMP
JE
CMP
JNE
U9
AL,LF
UID
AL,07H
Ull
AL,08H
UO
WAS I T A CARR I AGE RETURN
IS IT A LINE FEED
GO TO LINE FEED
IS IT A BELL
GO TO BELL
IS I T A BACKSPACE
IF NOT A CONTROL, 01 SPLAY
IT
8ACK SPACE FOUND
OR
; -----
JE
DL,DL
U7
DEC
JMP
U7
IS IT ALREADY AT START OF LINE
SET CURSOR
NO
JUST MOVE IT BACK
SET_CURSOR
-=--
OX
CARR I AGE RETURN FOUND
U9:
MOV
JMP
1-----
DL,O
U7
MOVE TO FIR S T COLUMN
SET_CURSOR
LINE FEED FOUND
Ul0:
CMP
JNE
JMP
1-----
DH,25-1
U6
UI
BOTTOM OF SCREEN
YES, SCROLL THE SCREEN
NO, JUST SET THE CURSOR
BELL FOUND
Ull :
MOV
CX,1331
o I V I SOR FOR 896 HZ TONE
MOV
8L,31
SET COUNT FOR 31 /64 SECOND FOR BEEP
CALL
8EEP
SOUND THE POD BELL
JMP
US
TTY_RETURN
WRITE_TTY
ENDP
; - - - - - - ---- -- -- - - - - - - - - - - - - - - - - - -- -- -- - - - - - - - - - - - ------I LIGHT PEN
I
THIS ROUTINE TESTS THE LIGHT PEN SWITCH AND THE LIGHT
;
PEN TRIGGER. IF BOTH ARE SET, THE LOCATION OF THE LIGHT
;
PEN IS DETERMINED. OTHERWISE, A RETURN WITH NO INFORMATION
;
IS MADE.
I ON EXIT:
;
(AHI
0 IF NO LIGHT PEN INFORMATION IS AVAILABLE
;
ex, CX, OX ARE DESTROYED
;
(AH) = , IF LIGHT PEN IS AVAILABLE
(DH.DLl
ROW,COLUMN OF CURRENT LIGHT PEN POSITION
;
(CH) = RASTER POSITION
I
(BX)
BEST GUESS AT PIXEL HORIZONTAL POSITION
:
;
- - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - -- - - - - --- -- - -- - - - -ASSUME
OS :OATA
VI
DB
3,3,5,5,3,3,3,4
; SUBTRACT_TA8LE
- ---
--
--
-
----
---
----
=
=
=
----
;-----
-- ---- -
WAIT FOR LIGHT PEN TO BE DEPRESSED
READ LPEN
MOV
MOV
ADD
IN
TEST
JZ
JMP
183b
1831
1838 0182 A8
1839 0184 15
1840 0186 E9
1841
1842
1843
1844 0189
18450189 B4
1846
1841
1848
1849018888
1850 078F 8A
1851 0191 EE
1852 0792 E8
1853 0794 42
1854 0795 EC
1855 0796 8A
1856 0798 4A
1851 0199 FE
1858 019B 8A
1859 0790 EE
1860 019E 42
1861 079F E8
1862 07Al EC
1863 07A2 8A
1864
V IDEO-CALL -RETURN
SCROLL UP THE SCREEN
TTY-RETURN
RESTORE THE CHARACTER
RETURN TO CALLER
U4:
PROC
NEAR
AH,O
OX, ItIADDR 6845
DX,6
AL,DX
AL,004H
V6 A
V6-
SET NO LIGHT PEN RETURN CODE
CET BASE ADDRESS OF 6845
POINT TO STATUS REGI STER
GET STATUS REG I STER
TEST LIGHT PEN SWITCH
GO IF YES
NOT SET. RETURN
NOW TEST FOR LIGHT PEN TR I GGER
02
03
0800 R
V6_A:
;-----
TEST
JNZ
JMP
AL,2
V7A
V1
TRIGGER HAS BEEN SET, READ THE
TES T LIGHT PEN TR I GGER
RETURN WITHOUT RESETT I NG TR I GGER
VALUE
IN
V1A:
10
MDV
INPUT REGISTERS POINTED TO BY A,H,
AND CONVERT TO ROW COLUMN
lb 0063 R
C4
MOV
MOV
OUT
JMP
INC
IN
MOV
DEC
INC
MOV
OUT
INC
JMP
IN
MOV
ADDRESS REGI STER FOR 6845
REG I STER TO READ
SET IT UP
I/O DELAY
DATA REGISTER
GET THE VALUE
SAVE IN CX
ADDRESS REC I STER
00
E8
C4
C4
00
E5
AH,16
DX,@ADDR 6845
AL,AH
DX,AL
'.2
OX
AL,DX
CH,AL
OX
AH
AL,AH
DX,AL
OX
'.2
AL,DX
AH,CH
LIGHT PEN REG I STERS ON 6845
IN
(OX)
SECOND DATA REGI STER
POINT TO DATA REGISTER
I/O DELAY
GET SECOND DATA VALUE
AX HAS I NPUT VALUE
VIDEO 1
5-159
IBM Personal Computer MACRO Assembler
VIDEOI --- 06/10/85
VIDEO DISPLAY BIOS
1865
1866
1867
1868
1669
1810
1811
1612
1813
Version 2.00
AX HAS THE VALUE READ
8A IE 0049 R
2A FF
2E: 6A 9F 0769 R
28 C3
88 IE 004E R
01 EB
28 C3
1674 0789 79 02
1815 018B 28 CO
1816
1677
1816
1819 0180
1660 07ao al 03
'68' 078F 60 3E 0049 R 04
1882 01C4 72 29
1883 07C6 60 3E 0049 R 01
1884 07CB 14 22
1865
1886
1867
1888 01CO 82 28
1889 01CF Flo F2
1890
1891
1892
1893 0101 8A E8
1894 0703 02 ED
1895 0105 8A DC
1896 0101 2A FF
1897 0109 80 3E 0049 R 06
1898 010E 15 04
1899 OlEO 81 04
1900 07E2 DO E4
1901 07E4
1902 01E4 03 E3
1903
1904
01A4
01A8
01AA
OlAF
0181
0785
0187
MOV
SUB
MOV
SUB
MOV
SHR
SUB
JNS
SUB
;-----
1-16
06-10-85
IN FROM THE 6845
~~::~RT_MODE
8L,CS)VI [eX]
AX,ax
8X,OCRT START
BX,I
AX,8X
V2
AX,AX
MOV
CMP
JB
CMP
JE
CL,3
aJCRT MODE,4
V4
(tCRT MODE,7
YO
-
ALPHA_PEN
oL,40
OL
DIVISOR FOR GRAPHICS
DETERM I NE ROW (AL) AND COLUMN I AH I
AL RANGE 0-99, AH RANGE 0-39
DETERMINE GRAPHIC ROW POSITION
MOV
ADO
MOV
SUB
CMP
MOV
SAL
CH,AL
CH,CH
BL,AH
SH,SH
(lCRT _MODE, 6
V3
CL,4
AH,I
SHL
BX,CL
JNE
V3;
;-----
DETERM I NE MODE
SET ·6 SHTFT COUNT
DETERMINE IF GRAPHICS OR ALPHA
ALPHA_PEN
GRAPHICS MODE
MOV
OIV
;-----
CONVERT TO COR~ECT PAGE OR I GIN
IF POSITIVE, DETERMINE MODE
<0 PLAYS AS 0
DETERMINE MODE OF OPERATION
V2.
;-----
; MODE VALUE TO BX
; DETERM I NE AMOUNT TO SUBTRACT
; TAKE IT AWAY
SAVE ROW VALUE IN CH
·2 FOR EVEN/ODD FIELD
COLUMN VALUE TO SX
MULTIPLY BY 8 FOR MEDIUM RES
DETERM I NE MED JUM OR HIGH RES
NOT HIGH RES
SHIFT VALUE FOR HIGH RES
COLUMN VALUE TIMES 2 FOR HIGH RES
NOT HIGH RES
MULTIPLY-·16 FOR HIGH RES
DETERMINE ALPHA CHAR POSITION
190~
1906
1901
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
192a
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
01E6
07E8
07EA
OlEO
8A
8A
CO
EB
04
FO
EE 02
12
MOV
MOV
SHR
JMP
;-----
01EF
01EF Flo
01F3 8A
07F5 8A
01F7 02
01F9 8A
07FB 8A
01FD 32
07FF 03
0801
0801 84
0803
0603 52
0804 88
0808 83
0808 EE
080C SA
0800
080050
060E SF
080F 5E
0810 IF
0811 IF
0812 IF
0813 IF
0814 01
0815 CF
0816
0816
5-160
36 004A R
FO
04
EO
E6
DC
FF
E3
DL,AH
DH,AL
DH,2
SHORT V5
ALPHA MODE ON LIGHT PEN
OIV
MOV
MOV
SAL
MOV
MOV
XOR
SAL
BYTE PTR (lCRT COLS
DH,AL
OL,AH
AL,CL
CH,AL
BL,AH
SH,SH
aX,CL
PUSH
MOV
ADO
OUT
POP
OX
OX, (tADDR 6845
DX,l
DX,AL
OX
V5.
01
AH, I
V6.
16 0063 R
C2 07
V7.
POP
POP
POP
POP
POP
POP
POP
POP
IRET
READ LPEN
CODEENDS
END
VIDEO 1
COLUMN VALUE FOR RETURN
ROW VALUE
DIVIDE BY 4 FOR VALUE IN 0-24 RANGE
LIGHT _PEN_RETURN_SET
ALPHA PEN
DETERM I NE ROW, COLUMN VALUE
ROWS TO OH
COLS TO DL
MULTIPLY ROWS· 8
GET RASTER VALUE TO RETURN REGISTER
COLUMN VALUE
TO 8X
LIGHT PEN RETURN SET
INDICATE EVERY THING SET
LIGHT PEN RETURN
SAVE RETURN VALUE (IN CASE)
; GET 8ASE ADDRESS
PO I NT TO RESET PARM
ADDRESS, NOT DATA, IS IMPORTANT
RECOVER VALUE
RETURN_NO_RESET
BP
DI
51
DS
DS
DS
DS
ES
ENDP
DISCARD SAVED eX,CX,DX
IBM Personal Computer MACRO ASSflmblflr
BIOS ----- 06/10/85
BIOS ROUTINES
I
2
3
.
PAGE 118,121
TITLE BIOS ----- 06/10/85
BIOS ROUTINES
.286C
.LIST
CODE
SEGMENT BYTE PUBL I C
4
5
I-I
06-10-85
Vflr'SIOn 2.00
0000
1
8
9
PUBL I C
PUBLIC
PUBLIC
EQU I PMENT 1
MEMORY SIZE DET 1
NMI_INT_I
-
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
C8042 :NEAR
CMOS READ: NEAR
01 :NEAR
D2:NEAR
D2A :NEAR
DDS :NEAR
OBF 42 :NEAR
PRT-HEX :NEAR
PRT-SEG:NEAR
P _tiSG:NEAR
ID
"
12
13
14
15
I.
11
18
19
20
21
22
: --- I NT
23
;
;
24
25
2.
21
28
29
30
;
:
;
31
;
;
32
;
33
;
39
40
;
;
41
;
;
42
43
44
45
5.
ALL INSTALLED MEMORY IS FUNCTIONAL.
IF THE MEMORY TEST DURING
POST INDICATES LESS, THEN THIS VALUE BECOMES THE DEFAULT.
IF NON-VOLATILE MEMORY IS NOT VALID (NOT INITIALIZED OR BATTERY
FAILURE) THEN ACTUAL MEMORY DETERMINED BECOMES THE DEFAULT.
3.
ALL MEMORY FROM 0 TO 640K MUST BE CONT] GUOUS.
OUTPUT
;
;
0000
0000
0001
0002
0005
0008
0009
FB
IE
E8 0000 E
AI 0013 R
IF
CF
OOOA
(AX) = NUMBER OF CONT I GUDUS 1K BLOCKS OF MEMORY
---- - - - ASSUME
--- -- - - ---- - - - - -- - - - - ----- - - ---- - - - --- - - -- - - - -- - --- - - ---- -- - - - - -- - --CStCOOE,OSIOATA
-'
MEMORY SIZE OET 1
- STI-
PROC FAR
PUSH
OS
CALL
ODS
Mav
AX, OMEMORY SIZE
POP
OS
IRET
MEMORY_SIZE_DET_l ENDP
I NTERRUPTS BACK ON
SAVE SEGMENT
EST ABLI SH ADDRESS] NG
GET VALUE
RECOVER SEGMENT
RETURN TO CALLER
;--- INT
11 H ---------------------------------------------------------------EQU I PMENT OETERM I NAT I ON
THIS ROUTINE ATTEMPTS TO DETERMINE WHAT OPTIONAL
DEVICES ARE ATTACHED TO THE SYSTEM •
INPUT
NO REGISTERS
THE IIIEQUIP FLAG VARIABLE IS SET DURING THE POWER ON
01 AGNOST I CS US I NG THE FOLLOW I NG HARDWARE ASSUMPTI ONS:
PORT 03FA
INTERRUPT 10 REGISTER OF 8250 (PRIMARY)
02FA = INTERRUPT 10 REGISTER OF 8250 ISECONDARYl
81TS 7-3 ARE ALWAYS 0
PORT 0378
OUTPUT PORT, OF PRINTER IPRIMARY)
0278
OUTPUT PORT OF PRINTER ISECONDARYJ
03BC = OUTPUT PORT OF PRINTER (MONOCHROME-PRINTER)
OUTPUT
(AX) IS SET, BIT SIGNIFICANT, TO INDICATE ATTACHED I/O
BIT 15,14
NUMBER OF PRINTERS ATTACHED
BIT 13
INTERNAL MODEM INSTALLED
BIT 12 NOT USED
BIT 1 1 , 1 0,9 = NUMBER OF RS232 CARDS ATTACHED
BIT 8
NOT USED
BIT 7,6 = NUMBER OF DISKETTE DRIVES
00=1,01=2 ONLY IF BIT 0 = 1
BIT 5,4
INITIAL VIDEO MODE
00 - UNUSED
01 - 40X25 BW USING COLOR CARD
10 - 80X25 BW US I NG COLOR CARD
1 1 - 80X25 BW US I NG BW CARD
51
58
59
.0
.,
...,••
.2
.3
=
•5
.9
=
=
.8
10
11
12
13
14
15
16
11
18
19
80
81
82
83
84
85
8.
=
=
=
=
BIT 3 = NOT USED
BIT 2 = NOT USED
BIT 1
MATH COPROCESSOR
BIT 0 = 1 (IPL DISKETTE INSTALLED)
NO OTHER REGISTERS AFFECTED
81
=
88
89
90
;
91
92
93
94
95
96
97
98
99
100
CONFIGURATION RECORD IN NON-VOLATILE MEMORY EQUALS THE ACTUAL
MEMORY SIZE INSTALLED.
;
31
38
48
49
50
51
52
53
54
55
I.
2.
;
3.
...,
12 H ---------------- - ---------------------- ------------------------MEMORY S [ZE DETERM I NE
THIS ROUTINE RETURNS THE AMOUNT OF MEMORY IN THE SYSTEM AS
DETERMINED BY THE POST ROUTINES.
(UP TO 640K)
NOTE THAT THE SYSTEM MAY NOT BE ABLE TO USE I/O MEMORY UNLESS
THERE I S A FULL COMPLEMENT OF 512K BYTES ON THE PLANAR.
INPUT
NO REGISTERS
THE IIIMEMORY SIZE VAR I ABLE I S SET OUR I NG POWER ON 0 I AGNOST I CS
ACCORD I NG TO THE FOLLOW I NG ASSUMPT IONS:
;
;
34
35
POST SEND 8042 COMMAND ROUTI NE
READ CMOS LOCATION ROUTINE
~PARITY CHECK I" MESSAGE
"PARITY CHECK 2" MESSAGE
"?7?7?" UNKNOWN ADDRESS MESSAGE
LOAD (OSl WITH DATA SEGMENT SELECTOR
POST WA I T 8042 RESPONSE ROUT I NE
01 SPLA Y CHARACTER ROUT I NE
01 SPLA Y FIVE CHARACTER ADDRESS ROUT I NE
DISPLAY MESSAGE STRING ROUTINE
OOOA
OOOA FB
00 DB IE
00 DC E8 0000 E
OOOF AI ~OlO R
0012 IF
0013 CF
0014
- - - - - ---- - - - - --- - - - - - -- - - - - - -- - - - - - -- - - - - --- - - - - --- - - ---- -- - - - ----- -- ---- -- ---
EQU I PMENT 1 PROC
FAR
STI
PUSH
as
CALL
005
AX.I!!IEQUIP FLAG
"OV
POP
IRET
EQU I PMENT_l
as
-
ENTRY POINT FOR ORG OF840H
I NTERRUPTS BACK ON
SAVE SEGMENT REGISTER
ESTABLISH ADDRESSING
GET THE CURRENT SETT I NGS
RECOVER SEGMENT
RETURN TO CALLER
ENDP
BIOS
5-161
IBM Personal Computer MACRO Assembler
8105 ----- 06/10/85
8105 ROUTINES
101
102
103
104
105
10.
107
108
109
110
111
112
113
114
115
11.
117
1 18
119
120
121
122
123
124
125
12.
127
126
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
ISO
151
f 52
153
154
155
156
157
156
159
160
161
"2
163
164
165
166
167
168
"9
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
20 I
202
203
204
Vers'on 2.00
1-2
06-10-85
PAGE
;-- HARDWARE INT
02 H -- ( NMI LEVEL I ---- ---------------------------------NON-MASKABLE INTERRUPT ROUTINE (REAL MODE)
THIS ROUTINE WILL PRINT A "PARITY CHECK 1 OR 2" MESSAGE AND ATTEMPT
TO FIND THE STORAGE LOCATION IN BASE 040K CONTAINING THE BAD PARITY.
IF FOUND, THE SEGMENT ADDRESS WILL BE PRINTED.
IF NO PARITY ERROR
?????
WILL BE 0 I SPLA YEO
CAN 8E FOUND (I NTERM I TTENT READ PROBLEM I
WHERE THE ADDRESS WOULD NORMALLY GO.
PAR I TY CHECK 1
PAR I TY CHECK 2
;
0014
001450
NM1
-
1 PROC
1NT
- PUSH
0015 E4 61
00 I 7 A8 CO
0019 75 07
IN
TEST
001880 00
0010 E8 0000 E
0020 58
0021 CF
0022
0022
0023
0025
0027
0029
002e
002F
0031
0034
PLANAR BOARD MEMORY FA I LURE.
NEAR
AX
SAVE OR I G I NAL CONTENTS OF
AL,PORT_B
AL, PAR ITY _ERR
READ STATUS PORT
PARITY CHECK OR 1/0 CHECK?
GO TO ERROR HALTS IF HARDWARE ERROR
JNZ
NM1
MOY
CALL
AL,CMOS_REG_O
CMOS READ
-1
POP
AX
80
70
AD
0000 E
0000 E
00
0049 R
10
-"
PUSH
AX
MOY
OUT
MOY
AL,CMOS_REG_D+NMI
CMOS _PORT ,AL
AL,OIS_KBO
C8042
CALL
CALL
MOY
MOY
1NT
0036
0037
003A
003C
58
8E 0000 E
A8 80
74 05
003E
003F
0042
0043
0043
0046
0048
004A
50
E8 0000 E
58
POP
MOY
NM1
8E
A8
74
E8
0000 E
40
03
0000 E
-
HARDWARE ERROR
SAVE INITIAL CHECK MASK IN (ALI
MASK TRAP (NM I I I NTERRUPTS OFF
o I SABLE
THE KEYBOARD
SEND COMMAND TO ADAPTER
ADDRESS OAT A SEGMENT
INITIALIZE AND SET MODE FOR VIDEO
GET CURRENT MODE
CALL VIDEO_IO TO CLEAR SCREEN
005
AH,D
AL,'lICRT_MOOE
IOH
DI SPLAY HPARITY CHECK
(AX I
ELSE ?? - LEAVE NM I ON
TOGGLE NM I US I NG COMMON READ ROUT I NE
RESTORE ORIGINAL CONTENTS OF (AXI
EX I T NM I HANDLER BACK TO PROGRAM
-
IRET
NM1
50
80
E6
BO
E6
E8
84
AO
CD
= PLANAR BOARD MEMORY FA I LURE.
= OFF
- -- --- - - - - - - - - - - - - -- - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - -- --
ERROR MESSAGES
RECOVER INITIAL CHECK STATUS
PLANAR ERROR, ADDRESS "PARITY CHECK
CHECK FOR PLANAR ERROR
SKIP IF NOT
AX
TEST
SI ,OFFSET D1
AL, PAR I TY _CHECK
JZ
NM1
PUSH
CALL
P MSG
POP
AX
SAVE STATUS
DISPLAY "PARITY CHECK 1" MESSAGE
AND RECOVER STATUS
MOY
S I ,OFFSET 02
AL,lo_CHECK
NM1 3
P _MSG
ADDRESS OF "PARITY CHECK 2" MESSAGE
I/O PAR I TY CHECK ?
SK I P I F CORRECT ERROR 0 I SPLA YEO
DISPLAY "PARITY CHECK 2" ERROR
-
2
AX
I"
2,
TEST
JZ
CALL
;-----
TEST FOR HOT NMI
0040
0040
004F
0051
0053
0055
E4 61
DC DC
E661
24 F3
Eo 01
IN
OR
OUT
AND
OUT
0057
0058
005A
005C
005E
0060
FC
28
2B
E4
A8
75
CLO
SUB
SUB
IN
02
F6
61
CO
19
TEST
JNZ
ON PLANAR PAR ITY LINE
AL,PoRT 8
AL, RAM PAR OFF
PORT 8~AL AL ,RAM PAR ON
PORT_B~AL -
TOGGLE PARITY CHECK ENABLES
TO CLEAR THE PEND I NG CHECK
SET DIRECT I ON FLAG TO INCREMENT
POINT (OX) AT START OF REAL MEMORY
SET (SII TO START OF (05:1
READ CURRENT PAR I TY CHECK LATCH
CHECK FOR HOT NM I SOURCE
SKIP IF ERROR NOT RESET (DISPLAY ???I
OX,OX
SI,SI
AL,PORT 8
AL ,PAR (TY ERR
NMI_5
-
SEE IF LOCATION THAT CAUSED PARITY CHECK CAN BE FOUND IN BASE MEMORY
0062 88 IE 0013 R
0066
0066 8E DA
0068 89 8000
0068 F3/ AD
0060 E4 61
006F A8 CO
00717510
007380
0076 83
0079 77
0078
0078 8E
007E E8
0081 FA
0082 F4
0083
0083
0086
0088
0088
0080
0090
0092
0095
0096
NM1
C6 10
E8 40
EB
NM1
0000 E
0000 E
- 5,
8X, OlIMEMORY _S I ZE
;
GET BASE MEMORY SIZE WORD
MOY
MOY
REP
IN
;
PO I NT TO 64K SEGMENT
SET WORD COUNT FOR 64 KB SCAN
READ 64 KB OF MEMORY
READ PAR I TY CHECK LATCHES
CHECK FOR ANY PARITY ERROR PENDING
GO PRINT SEGMENT ADDRESS IF ERROR
TEST
OS,DX
CX,4000H·2
LDDSW
AL,PORT_B
AL,PARITY_ERR
JNZ
NM1
ADO
SUB
JA
DH,OIOH
8X,(6D·4
MOY
S I • OFFSET D2A
P _MSG
CALL
0000
28
0000
53
0000
29
0000
E
- 6,
CALL
MOY
E
CALL
MOY
E
CALL
MOY
E
CALL
CL1
HLT
0097
NM1
0091
CODE
5-162
MOY
NM1
-
.
-4
CLI
HLT
NM1
E8
BO
E8
80
E8
80
E8
FA
F4
- 4,
1NT
-
I
ENOP
ENDS
END
BIOS
PO I NT TO NEXT 64K BLOCK
DECREMENT COUNT OF 1024 BYTE SEGMENTS
LOOP TI LL ALL 64K SEGMENTS DONE
PRINT ROW OF 1???? IF PARITY
CHECK COULD NOT BE RE-CREATED
HALT SYSTEM
PRT SEG
AL,T( •
PRT HEX
AL,'S'
PRT HEX
AL,'I'
PRT_HEX
PRINT SEGMENT VALUE
PRINT (S)
HALT SYSTEM
(IN OX)
1-1
06-10-65
IBM Personal Computer MACRO Asselllbler
Version 2.00
BIOSI ---- 06110165
INTERRUPT ISH BIOS ROUTINES
I
2
3
4
5
6
7
8
•
0000
PAGE 116,121
TITLE BIOSI ---- 06/10/85
INTERRUPT
.266C
.LIST
CODE
SEGMENT BYTE PUBLI C
PUBLIC
PUBLIC
PUBL I C
CASSETTE 10 1
GATE A20SHUT9
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
CMOS READ: NEAR
CMOS-WR I TE: NEAR
CONF-TBL:NEAR
DDS:NEAR
PROC _SHUTDOWN I NEAR
ISH BIOS ROUTINES
10
II
12
13
14
15
16
17
18
I.
20
21
22
23
24
25
26
27
28
2.
30
31
32
33
34
35
36
37
38
INT 15 H ----------------------------------------------------------------INPUT - CASSETTE I/O FUNCTIONS
(AH) :: OOH
(AH) = 01H
(AH) :: 02H
(AHI = 03H
RETURNS FOR THESE FUNCTIONS ALWAYS
I F CASSETTE PORT NOT PRESENT
EXTENSIONS
(AH)
60H
DEVICE OPEN
IBX) :: DEVICE 10
(CX) :: PROCESS 10
(AH)
6tH
DEVICE CLOSE
(BX) :: DEVICE 10
(CX) :: PROCESS 10
(AH)
62H
PROGRAM TERMINATION
(BX) :: DEVICE 10
(AH)
83H
EVENT WAIT
43
44
45
.7
.8
(AH)
= MH. CY =
I)
INPUT - UNUSED FUNCTIONS
(AH) = 04H THROUGH 7FH
RETURNS FOR THESE FUNCTIONS ALWAYS (AHI = 66H. CY = II
(UNLESS INTERCEPTED BY SYSTEM HANDLERS)
NOTE: THE KEYBOARD INTERRUPT HANDLER INTERRUPTS WITH AH=4FH
3'
40
41
42
READ CMOS LOCATION ROUTINE
WR I TE CMOS LOCAT I ON ROUT I NE
SYSTEM/BIOS CONFIGURATION TABLE
LOAD (OS) WITH DATA SEGMENT SELECTOR
60286 HARDWARE RESET ROUTINE
46
(AL) :: OOH SET INTERVAL
(ESIBX) POINTER TO A BYTE IN CALLERS MEMORY
THAT WILL HAVE THE HIGH ORDER BIT SET
AS SOON AS POSSIBLE AFTER THE INTERVAL
EXPIRES.
(CX,DX) NUMBER OF MICROSECONDS TO ELAPSE BEFORE
POSTING.
(AL) = OIH CANCEL
4.
50
51
52
53
54
55
56
57
58
5'
RETURNS:
(AH)
:: S4H
60
61
62
63
6.
65
66
67
68
6'
70
.JOYSTICK SUPPORT
(OX) = OOH - READ THE
RETURNS AL =
(OX) :: OIH - READ THE
RETURNS AX ::
BX =
CX ::
OX::
= 85H
SYSTEM REQUEST KEY PRESSED
(ALI :: OOH MAKE OF KEY
(AL) = OIH BREAK OF KEY
(AH)
= 86H
WAIT
(CX,DXI
(AH)
=
MOVE BLOCK
(CX I
NUMBER OF WORDS TO MOVE
(ES:SI}
POINTER TO DESCRIPTOR TABLE
(AH)
= 88H
= 8.H
= 'OH
EXTENDED MEMORY 5 I ZE DETERM I NE
=
I NTERRUPT COMPLETE FLAG SET
(AL I
TYPE CODE
OOH -> 7FH
SERIALLY REUSABLE DEVICES
OPERATING SYSTEM MUST SERIALIZE ACCESS
SOH -> BFH
REENTRANT DEV I CES I ES: BX I S USED TO
DISTINGUISH DIFFERENT CALLS (MULTIPLE I/O
CALLS ARE ALLOWED S I MUL T ANEOUSL Y I
COH -> FFH
WAIT ONLY CALLS -THERE IS NO
COMPLEMENTARY 'POST' FOR THESE WAITS •
THESE ARE TIMEOUT ONLY.
TIMES ARE
FUNCT I ON NUMBER DEPENDENT.
73
74
75
76
77
78
7'
80
81
82
(AH)
83
8.
85
86
87
88
8.
.,.2
'0
'3
'4
.5
'6
.7
.8
••
100
101
102
103
104
105
106
107
108
10.
110
CURRENT SWITCH SETTINGS
SWITCH SETTINGS IBITS 1-4)
RESISTIVE INPUTS
A ( x) VALUE
A(y) VALUE
B(x) VALUE
B(y) VALUE
(AH)
71
72
CARRY IF AL NOT = OOH OR OIH
OR IF FUNCTI ON AL::O ALREADY BUSY
(AH)
(AH)
87H
.,H
NUMBER OF MICROSECONDS TO ELAPSE BEFORE
RETURN TO CALLER
PROCESSOR TO VIRTUAL MODE
DEV I CE BUSY LOOP
(AL I
SEE TYPE CODE
TYPE
OOH
OIH
02H
80H
DESCR I PT I ON
=
=
::
::
DISK
DISKETTE
KEYBOARD
NETWORK
ESIBX --> NCB
FDH '" DISKETTE MOTOR START
FEH '" FR I NTER
TIMEOUT
YES
YES
NO
NO
YES
YES
III
BIOSI
5-163
1-2
IBM Personal Computer MACRO Assembler
Version 2.00
BIOSI ---- 06/10/85
INTERRUPT 15H BIOS ROUTINES
112
113
114
115
116
111
PAGE
(AH)
=
COH
II.
120
121
122
123
124
125
126
121
12.
12.
130
131
132
133
134
135
136
131
13.
13.
140
141
142
143
14.
,.5
146
,.,
I ••
I ••
150
151
152
153
15.
155
156
151
15.
15.
160
161
162
163
164
165
166
161
16.
169
110
111
112
113
114
115
116
111
116
119
,.0
06-10-85
RETURN CONF I GURAT I ON PARAMETERS PO INTER
RETURNS
(AHI = OOH AND ey= 0 (IF PRESENT ELSE 86 AND CY=
(ES:8X) = PARAMETER TABLE ADDRESS POINTER
ow
•
DB
DB
DB
DB
MODEL BYTE
TYPE BYTE
BIOS:LEVEL
=
DB
DB
DB
DB
;
---------------------------ASSUME
0000
0000
0001
0004
0006
0009
0008
OOOE
0010
0012
0014
0016
0018
001A
001(;
ODIE
0020
0022
0025
0025
0027
0029
0028
0020
002F
0031
FB
80 Fe 80
12 4E
80 FC CO
14 51
80 Ee 80
OA E4
14 48
FE ce
14 44
FE CC
14 40
FE ce
74 47
FE CC
75 03
E9 0000 R
FE
74
FE
14
FE
15
E9
CC
31
CC
07
CC
'06
OICA R
0034 E9 016A R
LENGTH OF FOLLOW 1NG TABLE
SYSTEM MODEL BYTE
SYSTEM MODEL TYPE BYTE
BIOS REV 151 ON LEVEL
10000000 = OMA CHANNEL 3 USE BY BIOS
01000000 = CASCADED INTERRUPT LEVEL 2
00100000 = REAL TIME CLOCK AVAILABLE
00010000
KEYBOARD SCAN CODE HOOK I AH
RESERVED
RESERVED
RESERVED
RESERVED
CASSETTE 10 1
STICMP
JB
CMP
JE
SUB
OR
JZ
DEC
JZ
DEC
JZ
DEC
JZ
DEC
JNZ
JMP
NOT ..JOYST I CK:
DEC
JZ
DEC
JZ
DEC
JNZ
JMP
CS: CODE
PRoe
FAR
AH,080H
CI
AH, OCOH
CONF PARMS
AH,oaOH
AH,AH
DEV OPEN
AH DEV CLOSE
AH PROG TERM
AH
EVENT WAIT
AH
NOT ..JOYSTICK
..JOY:STICK
ENABLE INTERRUPTS
CHECK FOR RANGE
RETURN IF 00-7FH
CHECK FOR CONFIGURATION PARAMETERS
BASE ON
a
OEV ICE OPEN
DEV I CE CLOSE
PROGRAM TERMINATION
EVENT WAIT
..JOYSTICK BIOS
AH
SYS REQ
AH CI A
AHCI B
BLDCKMOVE
MOVE BLOCK
SYSTEM REQUEST KEY
WAIT
Cl_A:
..JMP
WAIT
WAIT
JNZ
JMP
CI C
EXT_MEMORY
GO GET THE EXTENDED MEMORY
003E FE CC
0040 75 03
0042 E9 03FA R
Cl_C:
DEC
JNZ
JMP
AH
CI 0
SET_VMODE
0045 80 EC 07
0048 75 03
004A E9 0483 R
Cl_D:
SUB
JNZ
JMP
AH,7
CI 'E
DEVICE_BUSY
CHECK FOR FUNCT I ON 90H
GO IF NOT
0040 FE ce
004F 75 03
005,1 E9 0487 R
Cl_E:
DEC
JNZ
JMP
AH
CI
I NT_COMPLETE
CHECK FOR FUNCT I ON 8BH
GO IF NOT
,.2
,.3
I ••
,.5
'.6
0054 84 86
00S6 F9
0057
0057 CA 0002
CI:
MOV
5TC
AH,86H
I ••
005A
DEV_OPEN:
,.9
,.0
005A
DEV_CLOSE:
005A
PROG_ TERM:
005A
005A E8 FB
Dose
SYS REQ:
..JMP
CASSETTE_IO_I
005C
OOSC DE
0050 07
DOSE BB 0000 E
0061 32 E4
0063 EB F2
0065
eONF PARMS
PUSH
POP
MOV
,.,
,.,
,.,
192
193
I ••
195
19.
191
19.
199
200
201
202
203
20.
205
206
201
20.
209
210
211
212
213
214
215
216
211
21.
219
220
221
222
223
224
225
II
WHE~E:
0037 FE CC
0039 75 03
0038 E9 03EE R
0065
0065
0066
0069
006B
0060
006F
0071
0012
0073
IE
E8 0000 E
OA CO
14 08
FE C8
74 45
IF
F9
EB E2
0075
0075
0076
007B
0070
007E
007F
0080
FA
F6 06 OOAO R 0 I
74 05
F8
IF
F9
E8 05
5-164
BIOS1
CHECK FOR FUNCTI ON 89H
SWAP TO V I RTUAL MODE
SET BAD COMMAND
SET CARRY FLAG ON
RET
XOR
JMP
CONF _PARMS
EVENT WAIT
ASSUME
PUSH
CALL
OR
JZ
DEC
JZ
POP
5TC
JMP
EVENT WAIT 2:
eLT
TEST
JZ
FAR RETURN EXIT FROM ROUTiNES
NULL HANDLERS
CI F
ENDP
PRoe
NEAR
DS:DATA
OS
DOS
AL,AL
EVENT WAIT 2
AL
EVENT WAIT 3
05
-
-
ORTC WAIT FLAG,OI
EVENT_WAlT_I
511
POP
5TC
JMP
RETURN
PRoe
NEAR
C5
E5
BX, OFFSET eONF TBL
AH,AH
CI F
ENDP
GET CODE SEGMENT
PLACE I N SELECTOR PO INTER
GET OFFSET OF PARAMETER TABLE
CLEAR AH AND SET CARRY OFF
EX I T THROUGH COMMON RETURN
SAVE
GO IF ZERO
CHECK IF 1
RESTORE OATA SEGMENT
SET CARRY
EXIT
NO I NTERRUPTS ALLOWED
CHECK FOR FUNCT I ON ACT I VE
ENABLE INTERRUPTS
OS
SET ERROR
RETURN
1-'
IBM Personal Computer MACRO Assembler
Version 2.00
BIOSI ---- 06/10/65
INTERRUPT ISH 8105 ROUTINES
06-10-85
22.
221
226
229
230
231
232
233
234
235
236
231
236
239
240
241
242
243
244
245
246
241
246
249
0062
0062
0064
0066
0066
006A
008E
0092
0096
009A
009F
OOA 1
00A4
00A6
00A6
00A9
00A8
OOAD
0080
0081
0082
0083
0084
E4
E8
24
E6
6C
69
69
69
C6
80
E6
24
OC
50
6A
80
E6
58
IF
Fe
F8
EB
0086
0086
OOBl
0088
008B
008E
OOCO
00C2
00C5
00C6
00C8
OOCC
OOCO
OOCE
50
FA
88
E6
24
66
E6
56
C6
Fa
IF
F8
E8
AI
00
FE
AI
06 009A
IE 0096
DE 009E
16 009C
06 OOAO
08
0000 E
lF
40
EVENT WA IT I:
INJMP
AND
OUT
R
R
R
R
R 01
CALL
AND
DR
PUSH
EO
08
0000 E
MDV
MDV
AI
I NTERRUPT UNMASKED
"2
AL, OFEH
IN1801.AL
_USER FLAG SECi.ES
:~i~R~~~~~~~X
I
SET UP TRANSFER TABLE
IltRTC-LOW.OX
:~~g~~~ I ~E~L~G. 0 I
CMOS READ
AL,07FH
AL,040H
SET ON FUNC110N ACT I VE S_I TCH
ENABLE PIE
READ CMOS LOCAT I ON
CLEAR SET
ENABLE PIE
SAVE AH
PLACE DATA INTO DATA REGISTER
ADDRESS ALARM REG I STER
PLACE DATA IN AH INTO ALARM REGISTER
RESTORE AH
-
AX
AH,AL
CALL
~~o~M~~T~~G_B
POP
PDP
OS
AX
-
STl
CLC
ENABLE INTERRUPTS
CLEAR CARRY
JMP
250
251
252
253
254
255
256
251
256
259
260
261
262
263
264
265
266
MOV
MDV
MDV
MDV
MOV
MDV
I ENSURE
AL.INTBOI
,-----
CANCEL
EVENT WAIT 3:
PUSH
AX
06 OOAO R 00
MDV
CALL
~~O~·~~~~_REG_B
XCHG
CALL
AL.OBFH
AH,AL
CMOS WR ITE
PDP
MOV
(lRTC_WA I T_FLAG ,
AND
AX
-
a
STI
PDP
OS
CLC
81
JMP
SAVE
INTERRUPTS
TURN OFF PIE
GET ALARM REGI STER
CLEAR PIE
PLACE INTO WRITE REGISTER
WRITE BACK TO ALARM REGISTER
RESTORE AH
SET FUNCT I ON ACT I VE FLAG OFF
ENA8LE INTERRUPTS
I RESTORE DATA SEGMENT
; SET CARRY OFF
: RETURN
o I SABLE
CLI
0808
0000 E
BF
EO
0000 E
CI_F
2.7
266
2.'
270
0000
EVENT WAIT
ENOP
--- JOY STICK -------------------------------------------------THIS ROUTINE WILL READ THE JOYSTICK PORT
271
272
273
27.
275
27.
277
27.
27.
2.0
INPUT
(OX) =0 READ THE CURRENT SW ITCHES
RETURNS (AL)= SWITCH SETTINGS IN BITS 1-4
(OX)=1
2.'
2.2
READ THE RESISTIVE INPUTS
RETURNS (AX)=A{x) VALUE
(BXI=A{yl VALUE
lCX)=8(x) VALUE
lDX)=B{y) VALUE
CY FLAG ON
I F NO ADAPTER CARD OR
I NVAL I 0 CALL
2.3
2 ••
285
266
261
286
289
290
291
292
293
294
295
296
0000
0000
0001
0003
0006
0006
OOoA
OOOC
OOoE
OOEI
OOEI
00E2
FB
6B C2
8A 020 I
OA CO
14 08
FE C8
14 OC
E9 0054 R
F8
E9 0051 R
JOY STICK
STI
MOV
MDV
OR
JZ
DEC
JZ
JMP
PRoe
NEAR
I NTERRUPTS BACK ON
GET SU8 FUNCT I ON CODE
ADDRESS OF PORT
AX,DX
DX.20IH
AL.AL
JOY 2
AL JOY 3
READ SW ITCHES
READ RESISTIVE INPUTS
GO TO ERROR RETURN
CI -
STI
JMP
GO TO COMMON RETURN
2.7
298
299
300
30 I
00E5
00E5 EC
00E6 24 Fa
00E6 EB Fl
IN
AND
JMP
AL.DX
AL,OFOH
JOY_I
STRIP UNWANTED BITS OFF
FINISHED
302
303
304
305
306
301
306
309
310
31 1
312
313
314
315
316
311
316
319
OOEA
OOEA 83 a I
OOEC E6 0106
OOEF 51
OOFO 83 02
00F2 E6 0106
00F5 51
00F6 83 04
00F8 E6 0106
OOFB 51
OOFe 83 08
OOFE E8 0108
alaI 8801
0103 59
010458
0105 56
0106 EB 09
MOV
R
CALL
PUSH
MOV
R
CALL
PUSH
MOV
R
CALL
PUSH
"DV
R
CALL
MOV
POP
POP
POP
JMP
8L, I
TEST CORD
CX
-
SAVE A{X)
VALUE
I
SAVE A(Y)
VALUE
I
SAVE B{X)
VALUE
8L,2
TEST CORD
CX
-
8L , 4
TEST CORD
CX
-
BL,8
TEST CORD
oX,CX
CX
ex
AX
JOY_I
SAVE 8(Y)
GET B{X)
GET A(Y)
GET A(X)
FINISHED
VALUE
VALUE
VALUE
VALUE
- RETURN
320
321
0108
322
0108 52
323
0109 FA
324
a I OA 80 00
325
OIOC E6 43
326
alOE E8 00
3210110E440
326
I 12 EB 00
329
a I 14 6A EO
330
0116 E4 40
331
0118 66 EO
332
a II A 50
333
0118B904FF
334
OIIEEE
335
0 I IF E8 00
336
0121
331 0121 EC
338
a I 22 84 C3
339
a I 24 EO F8
a
TEST CORD
PUSH
PROC
NEAR
OX
CLI
MDV
OUT
JMP
IN
JMP
MOV
IN
XCHG
PUSH
MOV
OUT
J"P
TEST CORD I I
IN
TEST
LOOPNZ
AL,O
TIMER+3,AL
'.2
AL,TIMER
"2
AH,AL
AL,TIMER
AH,AL
AX
CX.4FFH
OX,AL
'.2
AL,DX
AL,BL
TEST_CORD_I
SAVE
8LOCK INTERRUPTS WH I LE READ I NG
SET UP TO LATCH TIMER 0
READ LOW 8YTE OF T I MER 0
READ HIGH 8YTE OF TIMER 0
REARRANGE TO HIGH. LOW
SAVE
SET COUNT
FIRE TIMER
READ VALUES
HAS PULSE ENDED?
BIOS1
5-165
IBM Personal Computer MACRO Assembler
Version 2.00
BIOSI ---- 06/10/85
INTERRUPT ISH 8105 ROUTINES
340
341
342
343
344
345
34.
347
348
34'
350
351
352
353
354
355
35.
357
358
35'
3.0
3.1
3.2
3.3
3.4
3.5
3 ••
3.7
3.8
3 ••
370
371
372
373
374
375
37.
377
378
37'
380
381
382
383
384
385
38.
387
388
38'
3.0
3.1
3'2
3'3
394
395
39.
397
398
399
400
401
402
403
404
405
40.
407
408
409
4tO
411
412
413
414
415
41.
417
418
419
420
421
422
423
424
425
42.
427
428
429
430
431
432
433
434
435
43.
437
438
439
0126 83 F9 00
0129 59
012A 75 04
2B C9
012E EB 28
0130
0130 80 00
0132 E6 43
0134 EB 00
0136 E4 40
0138 8A EO
013A EB 00
o 13C E4 40
013E 86 EO
eMP
pOP
"NZ
SUB
"MP
TEST CORD 2:
MOV
o 12C
OUT
"MP
IN
MOY
"MP
IN
XCHG
CX,O
ex
ORIGINAL COUNT
SHORT TEST CORD 2
CX,CX
SHORT TEST_CORD_3
SET 0 COUNT FOR RETURN
EXIT WITH COUNT = 0
AL,O
TlMER+3,AL
AL,TIMER
AH,AL
READ HIGH BYTE OF TIMER 0
REARRANGE TO HIGH, LOW
CX,AX
TEST CORD 4
DX
DX,-I
CHECK FOR COUNTER WRAP
GO IF NO
ADJUST FOR WRAP
PUSH
MOY
0148
014A
o 14C
0140
2B DO
03 CA
SA
EB 02
ADO
DX,AX
CX,DX
POP
"MP
SHORT TEST_CORO_5
SUB
014F
014F 2B C8
0151
0151 81 EI IFFO
0155 C 1 E9 04
TEST CORD 4:
SOB
TEST CORD 5:
AND
0158
0158
0159
015C
0150
o 15E
0161
0161
0162
0164
TEST CORD 3:
SHR
-
FB
8A 0201
51
50
89 04FF
ox
CX,AX
CX,IFFOH
CX,4
0166 58
0167 59
0168 5A
POP
POP
POP
0169 C3
RET
ex
AX
CX,4FFH
AX
ex
OX
ENDP
ENDP
WAIT
NEAR
OS
DDS
ORTC WAIT FLAG,O!
WAIT-!
OS
-
FA
E4
E8
24
E6
8C
C7
89
89
C6
50
88
E8
24
OC
86
E8
58
0000 E
06 OOAO R 01
05
"Z
POP
STe
0057 R
IN
009A
0098
009E
009C
OOAO
R
R OOAO R
R
R
R 01
AL,INTBOI
o
F8
51
52
87 D1
F6
EI
75
83
73
S·2
AL,OFEH
INTSOI,AL
OUSER FLAG SEG,DS
; SET UP TRANSFER TABLE
Q!lUSER-FLAG-;-OFFSET Q!lRTC WA I T FLAG
Q!lRTC HIGH,CX
-ORTC-LOW, OX
; SET ON FUNCT I ON ACT I VE SW ITCH
:~TC:::::WA I T JLAG, 0 1
; SAVE (AH)
AX, X ·CMOS REG B
ENABLE PIE
CMOS REAOREAD ALARM BYTE
AL,01FH
CLEAR SIT BIT
AL,040H
ENABLE PIE BIT
AH,AL
DATA TO WORK REGISTER
CMOS WRITE
WR I TE NEW ALARM BYTE
AX
RESTORE (AH)
STI
PUSH
PUSH
XCHG
06 OOAD R 80
F9
05
EA 01
F2
TEST
LDOPZ
"NZ
SUB
"Ne
C6 06 OOAO R 00
5A
59
IF
F8
E9 0057 R
OICA
5-166
MOY
POP
POP
POP
eLe
"MP
WAIT
BIOS1
NO I NTERRUPTS ALLOWED
ENSURE I NTERRUPT UNMASKED
AND
OUT
WAIT TILL RTC TIMEOUT POSTED
OIAB
01 AC
o I AD
OIAE
0180
01 BO
0lB5
0lB7
0lB9
OIBC
IBE
o IBE
a IC3
a IC4
alC5
a IC6
DIC7
TEST FOR FUNCTION ACTIVE
"MP
MOY
MOY
MOY
MOY
MOY
PUSH
MOY
CALL
AND
OR
XCHG
CALL
POP
OBOB
0000 E
7F
40
EO
0000 E
SAVE
I
SET ERROR
RETURN
"MP
eLi
AI
00
FE
Al
IE
06
OE
16
06
SET COUNT
RETURN
TEST CORD
JOY_STICK
IE
E8
F6
74
IF
F9
E9
COUNT
AL,OX
AL,OFH
TEST_CORD_6
o 16A
PRDC
PUSH
CALL
TEST
I NTERRUPTS BACK ON
FLUSH OTHER INPUTS
DX,20!H
016A
OlbA
016A
0168
016E
0173
0175
0176
0177
a I 7A
017A
0178
alTO
017F
0181
0183
0187
018D
0191
0195
019A
0198
019E
OIAI
0lA3
0lA5
0lA7
01 AA
ADJUST
51'1
MOY
PUSH
PUSH
MOY
TEST CORD 6:
IN
TEST
LOOPNZ
EC
A8 OF
EO FB
READ LOW BYTE OF T I MER 0
S·2
AL,TIMER
AH,AL
3B C8
73 OB
52
BA FFFF
"AE
SET UP TO LATCH TIMER 0
S·2
0140
0142
0144
0145
eMP
1-4
06-10-85
ENDP
ex
(WITH ERROR TIMEOUT!
ENABLE
INTERRUPTS
ox
SAVE CALLERS PARAMETERS
SWAP COUNT WORK REGISTERS
:~i~_~A IT_FLAG. 080H
CHECK FOR END OF WA I T - CLEAR CARRY
DECREMENT TIMEOUT DELAY TILL WA I TEND
EXIT IF RTC TIMER WAIT ENDED FLAG SET
DECREMENT ERROR TIMEOUT COUNTER
LOOP TILL COUNTERS TIMEOUT
DX,CX
WAIT-9
DX,IWAIT_2
ORTC WAIT FLAG,O
OX
-
SET FUNCT I ON
ex
RESTORE CALLERS PARAMETERS
I NACT 1VE
OS
CLEAR CARRY FLAG
1-5
IBM Personal Computer MACRO Assembler
Version 2.00
BiaSI ---- 06/10/85
INTERRUPT 15H BIOS ROUTINES
440
441
442
443
444
445
446
441
448
449
450
451
452
453
454
455
456
451
458
459
460
461
462
463
464
465
466
461
468
469
410
411
412
413
414
415
416
411
418
419
480
481
482
483
484
485
486
481
488
409
490
491
492
493
494
495
PAGE
;---
15 H --
( FUNCTION 87 H -
BLOCK MOVE)
------------------------------
;
THIS BIOS FUNCTION PROVIDES A MEANS FOR A REAL MODE PROGRAM OR SYSTEM
TO TRANSFER A BLOCK OF STORAGE TO AND FROM STORAGE ABOVE THE 1 MEG
ADDRESS RANGE I N PROTECTED MODE SPACE BY SW I TCH I NG TO PROTECTED MODE.
;
;
;
ENTRY:
(AH)
(CX)
;
;
;
=
=
ES:SI
87H (FUNCTION CALL) - BLOCK MOVE.
WORD COUNT OF STORAGE BLOCK TO BE MOVEO.
NOTE: MAX COUNT = 8000H FOR 32K WORDS (65K BYTES)
= LOCATION OF A GOT TABLE BUILT BY ROUTINE USING THIS FUNCTION.
;
(ES:SI) POINTS TO A DESCRIPTOR TABLE (GOT! BUILT BEFORE INTERRUPTING
TO TH I S FUNCT I ON.
THE OESCR I PTORS ARE USE TO PERFORM THE BLOCK
MOVE IN THE PROTECTED MODE.
THE SOURCE AND TARGET DESCRIPTORS
BUILT BY THE USER MUST HAVE A SEGMENT LENGTH
2 • CX-l OR GREATER.
THE DATA ACCESS RIGHTS BYTE MUST BE SET TO CPLO-R/w (93H).
THE
24 BIT ADDRESS (BYTE HI, WORD LOW) MUST BE SET TO THE TARGET I SOURCE.
=
NO I NTERRUPTS ARE ALLOWED OUR I NG TRANSFER.
MAY CAUSE LOST INTERRUPTS.
LARGE BLOCK MOVES
EXIT:
(AH)
(AH)
(AH)
(AH)
=
=
=
=
OOH
01H
02H
03H
IF SUCCESSFUL
IF MEMORY PARITY (PARITY ERROR REGISTERS ARE CLEARED)
IF ANY OTHER EXCEPTION INTERRUPT ERROR OCCURRED
IF GATE ADDRESS LINE 20 FAILED
ALL REGISTERS ARE RESTORED EXCEPT (AH).
I F SUCCESSFUL - CARRY FLAG = 0
IF ERROR ------ CARRY FLAG = 1
DESCRIPTION:
I.
2.
3.
4.
5.
6.
7.
8.
9.
10.
II.
12.
13.
SAVE ENTRY REGISTERS AND SETUP FOR SHUTDOWN EXIT.
THE REQUIRED ENTRIES ARE BUILT IN THE GOT AT (ES:Sl).
GATE ADDRESS LINE 20 ACTIVE, CLI AND SET SHUTDOWN CODES.
THE IDTR IS LOADED AND POINTS TO A ROM RESIDENT TABLE.
THE GDTR I S LOADED FROM THE OFFSET PO INTER (ES: S I ) •
THE PROCESSOR IS PUT INTO PROTECTED MODE.
LOAD IDS) AND (ES) WITH SELECTORS FOR THE SOURCE AND TARGET.
DS:SI (SOURCE) (ES:DI) (TARGET) REP MOVSW IS EXECUTED.
CHECK MADE FOR PAR I TY ERRORS.
REAL MODE RESTORED WHEN SHUTDOWN 09H I S EXECUTED.
ERRORS ARE CHECKED FOR AND RETURN CODES ARE SET FOR (AH).
ADDRESS LINE 20 GATE IS DISABLED.
RETURN WITH REGISTERS RESTORED AND STATUS RETURN CODE.
(FOR PC-AT COMPATIBILITY ZF=1 IF SUCCESSFUL, ZF=O IF ERROR.)
THE FOLLOWING DIAGRAM DEPICTS THE ORGANIZATION OF A BLOCK MOVE GOT.
GOT
(ES:SI)
\
496
491
498
499
500
501
502
503
504
505
506
501
508
509
510
511
512
513
514
515
516
511
518
519
520
521
522
523
52.
525
526
521
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
INT
06-10-85
\
i\---------------\i
+00
DUMMY
+08
I
I
GOT LOC
1.
TABLE AS A DATA SEGMENT.
(USER INITIALIZED TO 0 - MODIFIED BY BIOS)
THE TH I RD DESCR I PTOR PO I NTS TO THE SOURCE
TO BE MOVED. (FROM)
(USER INITIALIZED)
4. THE FOURTH DESCR I PTOR PO I NTS TO THE
DESTINATION SEGMENT. (TO)
(USER INITIALIZED)
5. THE FIFTH [S A DESCRIPTOR THAT BIOS USES
TO CREATE THE PROTECTED MODE CODE SEGMENT.
(USER INITIALIZED TO 0 - MODIFIED BY BIDS)
6. THE SIXTH DESCR[PTOR IS USED BY BIOS TO
CREATE A PROTECTED MODE STACK SEGMENT.
(USER INITIALIZED TO 0 - MODIFIED BY BIOS)
(POINTS TO USERS STACK)
\---------------\
I
SOURCE
I
I
GOT
I
\---------------\
+ 18
I
TARGET
I
(CS)
I
I
(SS)
I
3.
I
I
GOT
I
\---------------\
I
BIOS
I
+20
\---------------\
+28
!---------------!
SAMPLE
OF
SOURCE
SOURCE _TARGET _ DEF
SEG LIMiT
LO WORD
HI-BYTE
DATA ACC RIGHTS
RESERVEO-
OR
0000
0008
0010
0018
0020
0028
0030
OICA
BLOCK MOVE
PROC
0 I CA FC
OICB 60
OICC 06
01CD IE
CLD
PUSHA
PUSH
PUSH
DICE E8 0000 E
CALL
TARGET
DESCRIPTOR
STRUC
OW
OW
DB
DB
OW
THE GLOBAL DESCRIPTOR TABLE
BLOCKMOVE GOT DEF
DQ
CGDT LOC
DQ
SOURCE
DQ
TARGET
DQ
BIOS_CS
DQ
TEMP SS
DQ
BLOCKMOVE _GOT _ DEF
THE FIRST DESCR I PTOR I S THE REQU I RED DUMMY.
(USER INITIALIZED TO 0)
2. THE SECOND DESCR I PTOR PO I NTS TO THE GOT
\
\
+10
J
?
93H
o
SEGMENT LIM I T (I -65536 BYTES)
24 B[T SEGMENT PHYSICAL
ADDRESS (0 TO (16M-I) I
ACCESS RIGHTS BYTE (CPLO-R/WI
RESERVED WORD (MUST BE ZERO)
(ACTUAL LOCAT[ON POINTED TO BY ES:SII
,
STRUC
,
FIRST DESCRIPTOR NOT ACCESSIBLE
LOCATION OF CALLING ROUTINE GOT
SOURCE OESCR I PTOR
TARGET DESCR I PTOR
B I OS CODE DESCR I PTOR
STACK OESCR I PTOR
ENDS
NEAR
ES
OS
SET 0 I RECT I ON FORWARD
SAVE GENERAL PURPOSE REG I STERS
SAVE USERS EXTRA SEGMENT
SAVE USERS DATA SEGMENT
SAVE THE CALLING RDUTINE"S STACK
DDS
SET OS TO DATA AREA
BIOS1
5-167
1-6
IBM Personal Computer MACRO Assembler
Version 2.00
8]051 ---- 06/10/85
INTERRUPT 15H 8]05 ROUT]NES
554
555
556
Mav
Mav
OIDI BC 16 0069 R
0105 89 26 0067 R
(t]0 ROM SEG,SS
([iI ]O:=ROM:=INIT, SP
;
;
SAVE USERS STACK SEGMENT
SAVE USERS STACK POINTER
557
558
SET UP THE PROTECTED MODE DEFINITIONS
==="'=
559
560
MAKE A 24 BIT ADDRESS OUT OF THE ES:SI
FOR THE GOT POINTER
5. ,
562
563
564
565
566
567
56,
569
570
57 ,
572
573
574
575
576
577
57'
579
580
58'
582
583
584
585
586
587
58'
589
590
59'
592
ASSUME
0109
OIDB
DIDO
OIDF
0lE2
0lE5
0lE7
8C
8E
8A
CO
CI
03
80
F4
EE 04
EO 04
C6
06 00
OlEA
OIEF
0lF2
0lF5
C1
89
88
C1
44
44
74
44
MaV
MaV
MaV
CO
08
5HR
5HL
Aaa
ADC
; -----
DS:NOTHI NG
AX,ES
OS,AX
OH,AH
OH,4
AX,4
AX, S]
DH,O
594
595
596
597
SET THE GOT _LOC
SET UP THE CODE SEGMENT OESCR I PTOR
OIFA C7 44 20
01FF C7 44 22
0204 C6 44 24
020B C6 44 25
020C C7 44 26
FFFF
0000
OF
9B
0000
Mav
Mav
Mav
Mav
MDV
MAKE A 24 B[T ADDRESS OUT OF THE
0211
0213
0215
021B
8C
8A
CO
Cl
Mav
Mav
DO
F4
EE 04
EO 04
AX, SS
DH,AH
oH,4
AX,4
5HR
SHL
SS
0218
0220
0223
0226
C7
89
88
C6
44
44
74
44
[S NOW
602
022A
022C
022F
0231
84
E8
3C
74
OF
03CC R
00
06
603
604
605
606
607
608
609
6"
6"
612
603
604
Mav
Mav
Mav
Mav
28 FFFF
2A
2C
20 93
59,
599
600
60 ,
j -----
CALL
CMP
JZ
MOV
0233 BO 03
0235 E6 80
0237 E8 51
aUT
JMP
618
(SS)
;
;
;
i
-
(
(SPI
REMA[NS USER
ISP)
)
GET THE CURRENT STACK SEGMENT
FORM HIGH BYTE OF 24 B[T ADDRESS
FORM HIGH BYTE - SHIFT RIGHT 4
STRIP HIGH N]BBLE FROM (AXI
[N POS]TlON FOR A 24 B[T ADDRESS
SETUP THE
I
(~: ::::~~~_~~:~;~l~~I~O~~:A~EG_LEN
(55)
DESCRIPTOR
;~::: :::~~ ~~wS;g~~NT
;
LIMIT
[S I ] • TEMP-SS. BASE-H [-BYTE, DH
; SET THE HIGH BYTE
[SI].TEMP:=SS.DATA:=ACC_RIGHTS,CPLO_DATA_ACCESS
; SET CPL 0
GATE ADDRESS B]T 20 ON
Mav
(D[SABLE
AH,ENA8LE BIT20
GATE_A20 AL,O
INTERRUPTS)
BL4
GET ENABLE MASK
ENABLE A20 AND CLEAR INTERRUPTS
WAS THE COMMAND ACCEPTED?
GO IF YES
AL,03H
MFG PORT tAL
SHORT SHUT9
EARLY ERROR EX I T
SET THE ERROR FLAG
I F NOT
SET S/-IUTDOWN RETURN ADDRESS AND DISABLE NMI
0239
0239 88 098F
Mav
023C E8 0000 E
CALL
615
, -6--1_6__
607
PO I NT IDS) TO USERS CONTROL BLOCK
GET THE GOT DATA SEGMENT
MOVE THE GOT SEGMENT PO I NTER TO (OS)
BUILD HIGH BYTE OF THE 24 BIT ADDRESS
USE ONLY HIGH NIBBLE SHIFT - RIGHT 4
STRIP HIGH NIBBLE FROM (AX)
ADD THE GDT OFFSET TO DEVELOP LOW WORD
ADJUST H [GH BYTE I F CARRY FROM LOW
MDV
MaV
MaV
MaV
08 FFFF
OA
OC
OE 0000
593
"-_
06-10-85
; SET THE SHUTDOWN BYTE LOCAT I ON
1 TO SHUT DOWN 9 AND OISABLE NM]
CLEAR- E5('CEPT] ON ERROR FLAG
~-~!~-1~-~{------------------
SUB
OUT
AL,AL
MFG_PORT. AL
SET ERROR FLAG LOCAT I ON TO 0
609
620
621
622
623
624
LOAD THE
0243 BD 02C6 R
MOV
SF,OFFSET ROM
0246 2E
SEGOV
DB
LlDT
LABEL
aRG
DB
aRG
CS
02EH
[SP]
OOFH
8YTE
BX,WORD PTR [BP]
BYTE
OFFSET CS: ??OOO!
001 H
OFFSET CS:? ?0002
LGDT
DB
LABEL
MOV
LABEL
ORG
DB
ORG
[Slj.CGDT LOC
; LOAD GLOBAL DESCRIPTOR TABLE REGISTER
OOFH
BYTE
OX, WORD PTR [S I ] • CGDT LOC
BYTE
OFFSET CS:??0003
001 H
OFFSET cs: ??0004
625
626
627
628
629
630
631
632
633
0247 OF
0248
0248 8B 5E 00
024B
0248
0248 0 I
024B
aB
? ?OOO 1
639
640
641
642
024B OF
024C
024C B8 54 08
024F
024C
024C
024F
LABEL
Mav
710002
634
635
636
637
638
lOT AND GOT
? ?0003
770004
IDT~LOC
; LOAD THE
lOT
643
644
645
646
SW [TCH TO V I RTUAL MODE
024F B8 000 I
"av
647
64'
649
650
651
652
653
654
655
656
657
658
659
660
660
662
663
0252
0255
0256
0258
025A
OF 01 FO
EA
025A R
0020
025A
0250
025F
0262
0264
0267
0269
026B
B8
8E
B8
8E
B8
8E
2B
28
LMSW
DB
aB
OW
OW
AX, V I RTUAL ENABLE
AX
OOFH,OOIH,OFQH
OEAH
OFFSET VIRT
BIOS_CS
MACHINE STATUS WORD NEEOED TO
SW I TCH TO V I RTUAL MODE
PURGE PRE-FETCH QUEUE WITH FAR JUMP
- TO OFFSET
- I N SEGMENT -PROTECTED MODE SELECTOR
V IRT:
; ----0028
DO
0010
08
0018
CO
F6
FF
IN PROTECTED MODE
Mav
Mav
Mav
Mav
MDV
Mav
AX, TEMP SS
SS, AX
AX ,SOURCE
DS,AX
AX, TARGET
ES,AX
SETUP STACK SELECTOR AND SQURCEITARGET SELECTORS
SUB
SUB
S] • S I
0] ,01
USER'S SS+SP IS NOT A DESCRIPTOR
LOAD STACK SELECTOR
GET THE SOURCE ENTRY
LOAD SOURCE SELECTOR
GET THE TARGET ENTRY
LOAD TARGET SELECTOR
SET SOURCE ] NDEX REG 1 STER TO ZERO
SET TARGET ]NDEX REGISTER TO ZERO
REP
MOVSW
MOVE THE BLOCK COUNT PASSED
664
665
0260 F31
A5
666
667
5-168
CHECK FOR MEMORY PAR I TY BEFORE SHUTDOWN
BIOS1
IN
ICX)
1-7
IBM Personal Computer MACRO Assembler
Version 2.00
81051 ---- 06/10/85
INTERRUPT 15H 8105 ROUTINES
66.
669
&70
&71
672
673
.74
675
&7&
& 11
678
&79
&80
681
682
&83
026F E4 61
0271 24 CO
0273 74 12
;----0275
0217
0279
0278
0270
027F
0281
0283
0285
88
59
80
E6
E4
DC
E6
24
E&
05
05
0I
80
&1
DC
61
F3
&1
6B.
6 ..
6B6
DONE 1
AX,OS;[OI]
OS: [01] ,AX
AL,OI
MFC PORT ,AL
AL,PORT 8
AL.RAM PAR OFF
PORT 8-;AL AL, RAM PAR ON
PORT_8-;-AL -
IN
OR
OUT
AND
OUT
;----DONE 1 :
&93
6.4
028A
SHUT9:
695
&9&
697
698
028A
0280
028F
0293
CET THE PARITY LATCHES
STRIP UNWANTED 8ITS
CiO IF NO PARITY ERROR
ERR
-
CLEAR PARITY 8EFORE SHUTDOWN
MOV
MOV
MOV
OUT
02137
0287 E9 0000 E
&87
688
:~: ~~~T f~
IN
AND
JZ
06-10-85
FETCH CURRENT SOURCE OAT A
WRITE IT 8ACK
SET PAR I TY CHECK ERROR = 0 t
TOCCiLE PAR I TV CHECK LATCHES
TO CLEAR THE PENb I NC ERROR
AND ENA8LE CHECK I NC
CAUSE A SHUTDOWN
PROC_SHUTDOWN
JMP
CiO RESET PROCESSOR AND SHUTDOWN
6B.
6.0
6.'
6.2
; ======== ==============
RESTORE USERS STACK
ASSUME
88 ---- R
8E 08
8E ! & 0069 R
88 2& 0067 R
MOV
MOV
MOV
MOV
DS:DATA
AX,DATA
DS,AX
SS,olIlO ROM SEG
SP ,olI I O=ROt(~1 NIT
SET OS TO DATA AREA
CET USER STACK SECiMENT
CET USER STACK POINTER
6 ••
700
70 I
702
703
704
705
706
707
708
709
710
711
712
713
714
115
71 &
717
7IB
719
720
721
722
723
724
125
726
727
728
129
730
731
732
133
734
735
136
737
73.
73.
740
141
742
743
144
745
746
747
148
149
150
751
752
153
754
755
756
157
158
759
GATE ADDRESS 81T 20 OFF
0297
0299
029C
029E
84
E8
3C
74
00
03CC R
00
OA
02AO
02A2
02A4
02A6
02A8
E4
3C
75
80
E6
80
00
04
03
80
MOV
CALL
eMP
JZ
IN
eMP
JNZ
MOV
OUT
;----02AA
02AA 88 0000
02AO E6 70
02AF
0280
0281
0283
0285
0288
028A
0288
028C
028C
028F
IF
07
E4
88
88
3A
61
F8
AH, 0 I SA8LE 81 T20
GATE A20
AL,OOONE3
0lSA8LE MASK
CATE ADDRESS 20 LINE OFF
COMMAND ACCEPTED?
GO IF YES
AL,MFG PORT
AL,O
DONE3
AL,03H
MFG_PORT ,AL
CHECK FOR ANY OTHER ERROR FIRST
WAS THERE AN ERROR?
REPORT FIRST ERROR I F YES
ELSE SET GATE A20 ERROR FLAG
RESTORE THE USERS REGISTERS AND SET RETURN CODES
DONE3:
MOV
OUT
POP
POP
80
EC
46 OF
EO
IN
MOV
MOV
eMP
AX,CMOS REG 0
CMOS_PORT ,AL
CLEAR {AHI
ENA8LE NM I
OS
RESTORE USER DATA SEGMENT
RESTORE USER EXTRA SEGMENT
CET THE ENDING STATUS RETURN CODE
POINT TO REGISTERS IN THE STACK
PLACE ERROR CODE INTO STACK AT IAH)
SET THE IF & CY FLAGS WITH RETURN CODE
RESTORE THE GENERAL PURPOSE REG I STERS
TURN 1NTERRUPTS ON
ES
AL ,MFG PORT
8P, SP [8P+15].AL
AH,AL
POPA
STI
DONE4
CA 0002
PROC
RET
DONE4
FAR
2
MOV
OUT
JMP
ROM
02C6
02C60100
02C8 02CC R
02CA OF
02C8 00
ROM lOT LOC:
-OW
OW
DB
DB
02CC
02CC
02CE
0200
0201
0202
ROM
028F
0020
00
87
0000
0204
0206
0208
0209
020A
t66
n 7
768
169
770
171
772
773
774
775
776
777
77B
779
180
181
TO DEFAULT
1NTERRUPT HANDLER
AL,,02H
MFG PORT ,AL
PROG_SHUTDOWN
CET EXCEPT I ON ERROR CODE
SET EXCEPT I ON I NTERRUFT OCCURRED FLAG
CAUSE A EARLY SHUTDOWN
IDT LOCATION
ROM lOT END-ROM lOT
ROM-IDTCSEGolI HI
o
-
LENGTH OF ROM lOT T A8LE
LOW WORD OF 8ASE ADDRESS
HI CH 8YTE OF 8ASE ADDRESS
RESERVED
THE ROM EXCEPTION INTERRUPT VECTOR GATES FOR BLOCK MOVE
R
lOT:
-
OW
OW
DB
DB
OW
EX INT
8105 CS
028F R
0020
00
81
0000
OW
OW
DB
DB
OW
EX INT
8105 CS
020C
020E
02EO
02El
02E2
028F R
0020
00
87
0000
OW
OW
DB
DB
OW
EX INT
8105 CS
02E4
02E6
02E8
02E9
02EA
028F R
0020
00
81
0000
OW
olil
EX INT
8105 CS
DB
DB
OW
TRAP GATE
OZEC
02EE
02FO
02Fl
02F2
028F R
0020
00
81
0000
OW
OW
DB
DB
OW
EX
02F4 028F R
02F6 0020
02F8 '00
OW
OW
DB
EX
o
o
-
TRAP GATE
o TRAP GATE
o -
760
761
762
7&3
7&4
165
(ALI
RETURN WITH FLAGS SET,-IAHI= CODE
(CY=0.IF=11= OK
(CY=I,IF=O)= ERROR
ENDP
8LOCK MOVE EXCEPT I ON
028F
028F 80 02
02C 1 E6 80
02C3 E9 0000 E
TO ZERo AND
INTERRUPTS
o
o
-
TRAP GATE
o
o
-
INT
8105 CS
o
-
TRAP GATE
o
-
INT
8105 CS
o
-
,EXCEPTION 00
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS 8YTE
RESERVED
EXCEPTION .01
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GAtE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION· 02
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS 8YTE
RESERVED
EXCEPTI ON 03
DESTINATION OFFSET
DES T I NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS 8YTE
RESERVED
EXCEPT I ON 04
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
CATE TYPE - ACCESS RIGHTS 8YTE
RESERVED
.EXCEPTION 05
DESTINATION OFFSET
DEST I NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
BIOS1
5-169
IBM Personal Computer MACRO Assembler
Vers j On 2.00
BIOSI ---- 06/10/85
INTERRUPT ISH BIOS ROUTINES
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
02F9 87
02FA 0000
02FC
02FE
0300
0301
0302
0304
0306
0308
0309
030A
02BF R
00,20
00
87
0000
02BF R
0020
00
"
0000
DB
OW
TRAP_GATE
OW
OW
DB
DB
OW
EX INT
BIOS CS
OW
OW
DB
DB
OW
EX INT
BIOS CS
EX INT
BIOS_CS
0
-
0
TRAP_GATE
0
-
0
TRAP_GATE
0
030C
030E
0310
031 I
0312
02BF R
0020
00
87
0000
ow
0314
0316
0318
0319
031 A
02BF R
0020
OW
OW
DB
DB
OW
EX INT
BIOS CS
87
0000
00
02BF R
0020
OW
DB
DB
OW
0
TRAP_GATE
0
-
0
TRAP GATE
0
031C
031 E
0320
0321
0322
OW
OW
DB
DB
OW
EX INT
BIOS_CS
00
87
0000
0324
0326
0328
0329
032A
02BF R
0020
00
87
0000
OW
OW
DB
DB
OW
EX INT
810S_CS
032C
032E
0330
033 I
02BF R
0020
OW
Ow
DB
DB
OW
EX INT
BIOS CS
00
87
0332 0000
0334
0336
0338
0339
033A
02BF R
0020
00
87
0000
OW
OW
DB
DB
OW
EX INT
B 10S_CS
033C
033E
0340
0341
OZ8F R
0020
OW
OW
DB
DB
Ow
EX INT
BIOS_CS
EX INT
BIOS CS
0348 00
0349 87
034A 0000
OW
OW
DB
DB
OW
034C
034E
0350
0351
0352
02BF R
0020
00
87
0000
OW
Ow
DB
DB
OW
EX INT
BIOS_CS
0354
0356
0358
0359
035A
02BF R
0020
OW
OW
DB
DB
OW
EX INT
BIOS_CS
87
0000
OW
OW
DB
DB
OW
EX INT
BIOS_CS
EX INT
BIOS CS
00
87
0342 0000
0344 02BF R
0346 0020
00
0
TRAP _GATE
0
0
TRAP_GATE
0
0
-
TRAP _GATE
0
0
TRAP_GATE
0
0
TRAP _GATE
0
0
-
TRAP_GATE
0
0
TRAP_GATE
0
0
TRAP_GATE
0
035C
035E
0360
0361
0362
02BF R
0020
0364
0366
0368
0369
036A
OZaF R
0020
00
87
0000
OW
OW
DB
DB
OW
036C
036E
0370
0371
0372
02aF R
0020
00
87
0000
Ow
OW
DB
DB
Ow
EX INT
BIOS_CS
0374
0376
0378
0379
037A
02BF R
0020
OW
OW
DB
DB
OW
EX INT
BIOS_CS
EX INT
BIOS_CS
00
87
0000
00
87
0000
02BF R
OOZO
0
TRAP_GATE
0
0
-
TRAP _GATE
0
0
TRAP ~GATE
0
0
TRAP _GATE
0
037C
037E
0380
0381
0382
00
87
0000
OW
OW
DB
DB
OW
0384
0386
0388
0389
038A
02BF R
0020
00
87
0000
OW
OW
DB
DB
OW
EX INT
BIOS CS
038C 02BF R
038E 0020
0390 00
OW
OW
DB
EX INT
BIOS CS
0
5-170
BIOSI
0
TRAP_GATE
0
-
0
TRAP_GATE
0
1-8
06-10-85
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 06
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 07
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 08
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTI ON 09
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 10
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 11
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 12
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORO COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 13
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT ION 14
DESTINATION OFFSET
DESTI NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON IS
DESTINATION OFFSET
DEST I NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 16
DESTINATION OFFSET
DESTI NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 17
DESTI NATI ON OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 18
DESTI NAT I ON OFFSET
DESTI NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 19
DESTI NAT I ON OFFSET
DESTINATION SEGMENT SELECTOR
WORO COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 20
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORO COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 21
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE
ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 22
DESTINATION OFFSET
DEST I NA TI ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 23
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COpy COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 24
DESTINATION OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
[8M Personal Computer MACRO Assembler
Version 2. 00
8[051
06/10/85
INTERRUPT ISH 8105 ROUT] NES
----
896
897
898
899
900
90 I
902
903
904
905
900
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
93S
936
937
938
939
940
941
942
0391 87
0392 0000
DB
DW
TRAP _GATE
0
0394
0396
0398
0399
039A
OW
DW
DB
DB
DW
EX INT
BIOS_CS
0
TRAP_GATE
0
DW
DW
DB
DB
DW
EX INT
BIOS_CS
0
TRAP_GATE
OW
DW
DB
DB
DW
EX INT
BIOS CS
0
TRAP_GATE
0
DW
DW
DB
DB
DW
EX INT
8105 CS
0
TRAP_GATE
0
OW
OW
DB
D8
OW
EX INT
BIOS CS
0
TRAP_GATE
0
0000
DW
OW
D8
D8
DW
EX INT
BIOS CS
0
TRAP _GATE
0
02BF R
0020
00
87
0000
DW
OW
08
D8
DW
EX INT
B IOS_CS
0
TRAP_GATE
0
039C
039E
03AO
03A I
03A2
03A4
03A6
03A8
03A9
03AA
03AC
03AE
0380
0381
03B2
0384
03B6
03B8
03B9
03BA
03BC
038E
03CO
03CI
03C2
03C4
03C6
03C8
03C9
03CA
03CC
03CC
028F R
0020
00
87
0000
028F R
0020
00
87
0000
028F R
0020
00
87
0000
028F R
0020
00
87
0000
02BF R
0020
00
87
0000
02BF R
0020
00
87
0
-
1-9
06-10-85
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTI ON 25
DESTINATION OFFSET
OESTI NAT 1 ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS 8YTE
RESERVED
EXCEPTION 26
DESTINAT[ON OFFSET
DESTINATION SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 27
DESTINATION OFFSET
DEST I NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 28
DEST[NAT[ON OFFSET
DESTINAT[ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT I ON 29
DESTINATION OFFSET
DEST I NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPT 1ON 30
DESTI NAT I ON OFFSET
DEST I NAT I ON SEGMENT SELECTOR
WORD COPY COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
EXCEPTION 31
DESTlNAT[ON OFFSET
DEST 1NAT I ON SEGMENT SELECTOR
WORD COpy COUNT
GATE TYPE - ACCESS RIGHTS BYTE
RESERVED
ROM - lOT_END:
BLOCK MOVE
ENOP
BIOS1
5-171
1-10
06-10-85
IBM Personal Computer MACRO Assembler
Version 2.00
810S! ---- 06/10/55
INTERRUPT 15H 8105 ROUTINES
94>
944
945
94.
947
948
949
950
951
952
953
954
955
95.
957
955
959
960
961
962
963
964
965
966
961
968
969
970
971
PAGE
;
- - - - - - - --- - - - - - - - - - - - -- -- - - ---- - - - - - - - ----; GATE A20
;
- THIS ROUTINE;: CONTROLS A SIGNAL WHICH GATES ADDRESS BIT 20.
;
THE GATE AlO SIGNAL 'IS AN OUTPUT OF THE 8042 SLAVE PROCESSOR.
;
ADDRESS 81T 20 SHOULD BE QATED ON BEFORE ENTERING PROTECTED MODE.
IT SHOULD BE GATED OFF AFTER ENTERING REAL MOOE FROM PROTECTED
MODE.
INTERRUPTS ARE LEFT 0 I SABLED ON EX IT.
INPUT
(AH)= ODH
ADDRESS BIT 20 GATE OFF. (A20 ALWAYS ZERO)
(AH) = DFH
ADDRESS BIT 20 GATE ON. (A20 CONTROLLED BY 80286)
OUTPUT
(AL) = OOH
OPERATION SUCCESSFUL. 8042 HAS ACCEPTED COMMAND.
(ALl= 02H
FAILURE--8042 UNABLE TO ACCEPT COMMAND.
--
~~ ~~
03CC
03CC
03CO
03CE
0301
0303
0305
0301
03DA
03DC
03DE
03EO
51
FA
E5
75
80
E6
E8
15
8A
E6
E8
-
-
--------
~;~
-
--
----
g~~L
--
---
---
--
SAVE USERS (CX)
0 I SABLE INTERRUPTS WH I LE US I NG 8042
INSURE 8042 INPUT BUFFER EMPTY
EXIT IF 8042 UNABLE TO ACCEPT COMMAND
8042 COMMAND TO WR I TE OUTPUT PORT
~~~i~S8~~~T
~~T~U;O~O~~:~D
,AL
GATE A20 RETURN
AL,AH
PORT A. AL
EMPTY_8042
JNZ
-----
- -- -- - - -- -- - - - - - - -- - - - -- - - - - - - - --- --- - - - - - -- - -- ---- - - -- - - --
EMPTY 8042
GATE A20 RETURN
AL, 05 tH -
MOV
OUT
CALL
;-----
----
ex
PUSH
CL I
CALL
JNZ
MOV
03E5 R
10
D1
64
03E5 R
07
C4
60
03E5 R
;~~~
-- -
Agg~~T
T6°
COMMAND
EXIT IF 8042 UNABLE TO ACCEPT COMMANO
8042 PORT DATA
OUTPUT PORT DATA TO 8042
WAIT FOR 8042 TO ACCEPT PORT DATA
8042 OUTPUT WILL SWITCH WITHIN 20 MICRO SECONDS OF ACCEPTING PORT DATA
972
913
974
975
97.
03E3
03E3 59
03E4 C3
977
978
979
980
98 ,
982
983
984
985
986
03E5
981
03E5
988
03E1
989
03E7
990
03E9
991
03E8
992
03ED
993
03EE
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1005
1009
1010
101 I
1012
1013
1014
1015
1016
1017
1018
101903EE
1020
1021 03EE
1022 03F 1
1023 03F4
1024 03F6
1025 03F9
1026
1021 03FA
GATE A20 RETURN:
POP
CX
; RESTORE USERS (CX I
RET
; - - - - - - - - - - - - --- -- - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - -- - - -- - ; EMPTY 8042
;
-THIS ROUTINE WAITS FOR THE 8042 INPUT BUFFER TO EMPTY.
; INPUT
;
NONE
; OUTPUT
;
(ALl = OOH
8042 INPUT BUFFER EMPTY (ZERO FLAG SET)
;
(ALl = 02H
TI ME OUT, 8042 I NPUT BUFFER FULL (NON-ZERO FLAG SEn
(CX)
- MODIFIED
--
~~;~;
E4 64
24 02
EO FA
C3
--
- -- --
- ~~;; ~ --- - - --- - - - - -- - - -- - -- - --
SUB
EMPTY L;
IN
AND
LOOPNZ
RET
GATE_A20
28 C9
-
CX,CX
(CX)=O, WILL BE USED AS TIME OUT VALUE
AL,STATUS PORT
AL, I NPT BUF FULL
EMPTY_L-
READ 8042 STATUS PORT
TEST I NPUT BUFFER FULL FLAG (B I T I)
LOOP UNTI L BUFFER EMPTY OR TI ME OUT
ENDP
;--- INT 15 H -- ( FUNCTION 88 H - I/O MEMORY SIZE DETERMINE) ---------------EXT MEMORY
THIS ROUTINE RETURNS
THE AMOUNT OF MEMORY IN THE SYSTEM THAT IS
LOCATED STARTING AT THE 1024K ADDRESSING RANGE, AS DETERMINED BY
THE POST ROUTINES.
NOTE THAT THE SYSTEM MAY NOT BE ABLE TO USE I/O MEMORY UNLESS THERE
I S A FULL COMPLEMENT OF 512K OR 640 BYTES ON THE PLANAR.
TH IS SIZE
SIZE IS STORED IN CMOS AT ADDRESS LOCATIONS 30H AND 31H.
INPUT
AH = 8aH
THE I/O MEMORY SIZE VAR I ABLE I S SET OUR I NG POWER ON
DIAGNOSTICS ACCORDING TO THE FOLLOWING ASSUMPTIONS:
1. ALL INSTALLED MEMORY IS FUNCTIONAL.
2. ALL MEMORY FROM 0 TO 640K MUST BE CONT I GUDUS.
OUTPUT
(AX)
;
EXT_MEMORY
88
E8
86
E8
CF
5-172
3031
0000 E
C4
0000 E
"OY
CALL
XCHG
CALL
IRET
EXT_MEMORY
BIOS1
= NUMBER OF CONT I GUOUS I K 8LOCKS OF MEMORY A
AVAILABLE STARTING AT ADDRESS 1024K.
- - - ----- - -- --- - - - ---- - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - -- - - - - - -- --- - - - - - - - - -PRDC
~~O~M~~A~-M-S-LO.H+CMOS-~-~Ei-~~E; H7g~R~~iE H~~H
AL,AH
CMOS READ
ENDP
;
;
;
{7g wM~~6~~
PUT HIGH BYTE IN POSITION ~AH)
GET THE LOW BYTE OF I/O MEMORY
RETURN TO USER
1-11
06-10-85
IBM Per>:lonill Computer MACRO AS$embler
Ver$;on 2.00
BIOSI ---- 06/10/85
INTERRUPT ISH BIOS ROUTINES
1028
1029
1030
1031
\ 032
1033
1034
1035
1036
1037
\ 038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
\ 068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
I 100
1101
1102
1103
1104
1 105
1106
1107
1 108
1109
1110
1111
1 I 12
1113
1114
I I IS
1116
1117
11 18
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
PAGE
INT 15 H ( FUNCTION 89 H l ----------------------------------------------PURPOSE:
TH I S B I OS FUNCT I ON PROV (DES A MEANS TO THE USER TO SW I TCH INTO
V I RTUAL (PROTECTED) MODE.
UPON COMPLET 1ON OF TH IS FUNCT I ON THE
PROCESSOR WILL BE I N
V I RTUAL (PROTECTED) MODE AND CONTROL WILL
BE TRANSFERRED TO THE CODE SEGMENT THAT WAS SPECIFIED BY THE USER.
(ES:SI) POINTS TO A DESCRIPTOR TABLE (GOT} BUILT BEFORE INTERRUPTING
TO THIS FUNCTION.
THESE DESCRIPTORS ARE USED BY THIS FUNCTION TO
THE
I NIT I AL I ZE THE I OTR. THE GDTR AND THE STACK SEGMENT SELECTOR.
DATA SEGMENT {OS) SELECTOR AND THE EXTRA SEGMENT (ES) SELECTOR WILL
BE INITIALIZE TO DESCRIPTORS BUILT BY THE ROUTINE USING THIS FUNCTION.
BH - OFFSET INTO THE INTERRUPT DESCRIPTOR TABLE STATING WHERE THE
FIRST EIGHT HARDWARE INTERRUPTS WILL BEGIN. ( INTERRUPT LEVEL 1 1
BL - OFFSET INTO THE INTERRUPT DESCRIPTOR TABLE STATING WHERE THE
SECOND EIGHT HARDWARE I NTERRUPTS BEG IN. ( I NTERRUPT LEVEL 2 )
THE DESCRIPTORS ARE DEFINED AS FOLLOWS:
1.
2.
3.
7.
8.
NOTE -
THE FIRST DESCR I PTOR I S THE REQU I RED DUMMY.
WSER INITIALIZED TO OJ
THE SECOND DESCRIPTOR POINTS TO THE GOT TABLE AS
A DATA SEGMENT.
WSER INITIALIZED)
THE TH I RD DESCR I PTOR PO I NTS TO THE USER DEF I NED
INTERRUPT DESCR I PTOR TABLE (lOT).
WSER INITIALIZED)
THE FORTH DESCRIPTOR POINTS TO THE USER'S DATA
SEGMENT (OS).
(USER INITIALIZED)
THE FIFTH DESCR I PTOR PO I NTS TO THE USER'S EXTRA
SEGMENT I ES) •
(USER I NIT (AL I ZED)
THE SIXTH DESCRIPTOR POINTS TO THE USER'S STACK
SEGMENT (SS).
(USER I NIT I AL I ZED)
THE SEVENTH DESCR I PTOR PO 1NTS TO THE CODE SEGMENT
THAT THIS FUNCTION WILL RETURN TO.
(USER I NIT I AL I ZED TO THE USER'S CODE SEGMENT.)
THE EIGHTH DESCR I PTOR I S USED BY TH I S FUNCT I ON TO
EST ABL I SH A CODE SEGMENT FOR ITSELF. TH I SIS
NEEDED SO THAT THIS FUNCTION CAN COMPLETE IT'S
EXECUT I ON WH I LE I N PROTECTED MODE.
WHEN CONTROL
GETS PASSED TO THE USER'S CODE THIS DESCRIPTOR CAN
BE USED BY HIM IN ANY WAY HE CHOOSES.
EACH DESCRIPTOR MUST CONTAIN ALL THE NECESSARY DATA
I.E. THE LIMiT,
BASE ADDRESS AND THE ACCESS RIGHTS BYTE.
AH= 89H
(FUNCTI ON CALL)
ES:SI = LOCATION OF THE GOT TABLE BUILD BY ROUTINE
USING THIS FUNCTION.
AH = 0
I F SUCCESSFUL
ALL SEGMENT REGISTERS ARE CHANGED,
I.
2.
3.
4.
5.
(AX)
AND
(BP)
DESTROYED
NO BIOS AVAILABLE TO USER.
USER MUST HANOLE ALL
I/O COMMANDS.
INTERRUPTS - INTERRUPT VECTOR LOCATIONS MUST BE
MOVED,
DUE TO THE 286 RESERVED AREAS.
THE
HARDWARE I NTERRUPT CONTROLLERS MUST BE RE I NIT I ALI ZED
TO OEFINE LOCATIONS THAT DO NOT RESIDE IN THE 286
RESERVED AREAS.
EXCEPTION INTERRUPT TABLE AND HANDLER MUST BE
INITIALIZED BY THE USER.
THE INTERRUPT DESCR I PTOR TABLE MUST NOT OVERLAP
THE REAL MODE B I OS INTERRUPT DESCR I PTaR TABLE.
THE FOLLOW I NG GIVES AN IDEA OF WHAT THE USER CODE
SHOULD LOOK LIKE WHEN I NVOK I NG TH 1 S FUNCT I ON.
REAL MODE --->
VIRTUAL MODE --->
"USER
MOV
MOV
MOV
MOV
MOV
MOV
INT
"USER
CODE"
AX, GOT SEGMENT
ES,AX
S I • GOT OFFSET
BH,HARDWARE INT LEVEL I OFFSET
BL, HARDWARE I NT LEVEL 2 OFFSET
AH,89H
15H
CODE"
DESCRIPTION:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
12.
CL I (NO I NTERRUPTS ALLOWED) WH I LE TH I S FUNCT I ON IS EXECUT I NG.
ADDRESS LINE 20 IS GATED ACTIVE.
THE CURRENT USER STACK SEGMENT DESCRIPTOR IS INITlALlZEO.
THE GOTR I S LOADED WITH THE GOT BASE ADDRESS.
THE IDTR I S LOADED WITH THE lOT BASE AODRESS.
THE 8259 IS REINITIALIZED WITH THE NEW INTERRUPT OFFSETS.
THE PROCESSOR IS PUT IN VIRTUAL MODE WITH THE CODE
SEGMENT OES I GNATED FOR TH I S FUNCTI ON.
DATA SEGMENT IS LOADED WITH THE USER DEFINED
SELECTOR FOR THE OS REGI STER.
EXTRA SEGMENT I S LOADED WITH THE USER DEF I NED
SELECTOR FOR THE ES REG (STER.
STACK SEGMENT IS LOADED WITH THE USER DEFINED
SELECTOR FOR THE SS REGISTER.
CODE SEGMENT DESCR I PTOR SELECTOR VALUE IS
SUBSTI TUTED ON THE STACK FOR RETURN TO USER.
WE TRANSFER CONTROL TO THE USER WITH INTERRUPTS 0 I SABLED.
BIOS1
5-173
r -12
06-10-B5
IBM Personal Computer MACRO Assembler
BIOSI
---- 06/10/B5
1135
1136
1131
113B
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
f 155
1156
1157
1158
1 159
1160
1161
1162
1163
1164
1165
1166
1161
11&B
1169
1170
1171
I r 72
I I 73
1174
1175
1176
1177 0000
117B 0008
r 179 00 I 0
1180001B
1181 0020
1182 0028
I1B3 0030
1184 0038
1185 0040
1186
I1B7
1188
1189 03FA
1190 03FA
1191
1192
1193
119403FAFA
1195 03F8 84
1196 03FD E8
1197 0400 3C
I 198 0402 74
I 199 0404 B4
1200 0406 F9
1201 0407 CF
1202
1203
Version 2.00
INTERRUPT 15H BIOS ROUTINES
PAGE
THE FOLLOWING DIAGRAM DEPICTS THE ORGANIZATION
GOT.
.-- - - - -- OF
- - - -- - - --- - - - - - - - - - - - -- - -- - - - - ---- - - - - - - --- - -- -- - - - --- - - --- - - - - -- - - ----;
.---------------- .
I
DUMMY
I
IES:SI)--»
1
1
1----------------1
I
I
GOT
1----------------1
I
lOT
I
I
OS
I
I
ES
1
1
1----------------1
1
1
1---- -- ----------1
I
1
1
1---- --- ---------1
I
I
55
1
1
1----------------1
I
.36
;
;
;
;
I
CS
1
1
1----------------1
I
TEMP BIOS
I
I
cs
r
1----------------1
- - - - -- - - - -- - - - - - - - - - - - - - --- - - - - - -- -- - - - ---- - - - -- - - -- - - - - - - - - - - - - - - - -- - - - - - - - --- - - - - - - - - - - - -- - - - - - - - - - - - - -- - - - - - - - - -- - -- - - - - - - ---- - - --- - - -- - - - --- - - - - -- - - - -- -THE GL08AL DESCRIPTOR TABLE
(ACTUAL LOCATION POINTED TO 8Y ES:SI)
V I RTUAL ENABLE GOT OEF
STRUC
- DQGOTPTR
DQ
10TPTR
oQ
oQ
USER OS
USER-ES
DQ
USER-55
DQ
USER::::CS
OQ
BlOCS
DQ?
V [RTUAL_ENABLE _GOT _ DEF
ENDS
ASSUME
X VIRTUAL
SET _VMODE:
;-----
FAR
ENABLE ADDRESS LATCH BIT 20
"OV
CALL
e"p
JZ
"OV
STe
IRET
81T20 ON:
PUSH
IF
POP
;
FIRST oESCR I PTOR NOT ACCESS I BLE
GOT OESCR I PTOR
lOT OEseR I f'TOR
USER DATA SEGMENT oESCR I PTOR
USER EXTRA SEGMENT DESCR I PTOR
USER STACK SEGMENT DESCR I PTOR
USER CODE SEGMENT DESCR I PTOR
TEMPORARY B I OS OESCR 1PTOR
OS:oATA
PROC
eLi
OF
03CC R
00
04
FF
1204 0408
1205 040B 06
1206 0409
1201
1208
1209
1210
1211
1212 040A
1213 040C
1214 040E
1215 0410
12160412
12170414
121B 0416
1219 0418
1220 041 A
1221 041C
1222 041E
1223 0420
1224 0422
12250424
1226
1227
1228
1229
1230
1231 0426
1232 0428
1233 042A
1234 042C
1235 042E
1236 0430
1237 0432
123B 0434
1239 0436
1240 0438
1241 043A
1242 043C
1243 043E
1244 0440
1245
1246
1247
1248
GOT
AH,ENA8LE BIT20
GATE A20 AL,O81T20 ON
AH,OFFH
ES
OS
NO I NTERRUPTS ALLOWED
ENABLE 81T 20 FOR ADDRESS GATE
WAS THE COMMAND ACCEPTED?
GO IF YES
SET THE ERROR FLAG
SET CARRY
EARLY EXIT
MOVE SEGMENT PO INTER
TO THE OAT A SEGMENT
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - -- - - -- - - - - - - - - - - - - - - - - - - - - - -- - - --
11
20
00
C7
21
00
04
21
00
01
21
00
FF
21
"OV
OUT
J"P
"OV
OUT
J"P
"OV
OUT
J"P
"OV
OUT
J"P
"OV
OUT
AL,IIH
INTAOO,AL
START INITIALIZATION SEQUENCE-ICWI
EDGE, [NTERVAL -8, MASTER, I CW4 NEEDED
AL,8H
INTA01,AL
HARDWARE INT'S START AT
SEND ICW2
AL,04H
INTA01,AL
SEND
I CW3 -
MASTER LEVEL 2
SEND
I CW4 -
MASTER, 8086 MODE
AL,OFFH
[NTAOI,AL
MASK OFF ALL
11
AO
00
C3
AI
02
00
AI
00
01
E6 A I
E8 00
BO FF
E6 AI
"OV
OUT
J"P
"OV
OUT
"OV
J"P
OUT
J"P
"OV
OUT
J"P
"OV
OUT
AL,I1H
INTBOO ,AL
INITIALIZE SEQUENCE-ICWI FOR SLAVE
EDGE, INTERVAL -8, MASTER, I CW4 NEEDED
80
E6
EB
8A
E6
EB
80
E6
E8
80
E6
E8
80
E6
80
E6
EB
8A
E6
80
E8
E6
E8
80
5-174
'.2
'.2
S·2
AL,O IH
INTAO 1 ,AL
S·2
S·2
AL,8L
INT801,AL
AL,02H
S·2
INT801,AL
'.2
AL,OIH
INT80 I ,AL
AL,OFFH
INTBOI,AL
SEND ICW4 MASK OFF ALL
INT #
SLAVE LEVEL 2
SLAVE,8086 MODE
S·2
; ---------------------------- --- - --------
BIOS1
I CW3 -
(8H)
INTERRUPTS
HARDWARE INT'S START AT
SEND ICW2
SEND
INT #
INTERRUPTS
(8Ll
1-13
06-10-85
IBM Personal Computer MACRO Assembler
Version 2.00
81051 ---- 06/10/85
INTERRUPT ISH 8[05 ROUTINES
1249
1250 0442
1251 0441
1252 0448
1253 0450
1254 0454
1255
1256
1251
1256
1259
1260 0459
1261 045A
1262 04SA
1263 0450
1264 045A
1265 045A
1266 0450
1261
1268 0450
1269 045E
1210 045E
1211 0461
1212 045E
1213 045E
1214 0461
1215
1216 0461
1211
12180464
1219 0461
1260 0468
1281 046A
1282
1283 046C
1284
1285
1286
1281 046C
1288 046F
12890411
1290 0414
1291 0416
1292 0419
1293
1294
1295
1296
1291 0418
1298 041C
1299 041F
13000481
1301 0482
1302
1303 0483
1304
1305
1306
1301
1308
1309
1310
1311
1312
1313 0483
1314 0483
13150484
13160481
1311
13180481
13190481
1320 0488
1321
1322 0488
1323
C1
C6
C1
C6
C1
44
44
44
44
44
38
3C
3A
3D
3E
FFFF
OF
0000
98
0000
MOV
MOV
MOV
MOV
MOV
;
;
;
--- - - - - --------- - - - - - - - ------------ - - --PROTECTED MODE
------- ENA8LE
- - - - - - - - --------- -- -- - - -- - - - - ---LGDT
[S I ) • GDTPTR
I
08
OF
??0005
88 54 08
LA8EL
MOV
n0006
LABEL
0I
08
OF
??0001
LlDT
DB
LA8EL
ORG
ORG
88 5C
10
MOV
n0008
LABEL
ORG
08
01
ORG
MOV
88 0001
LMsW
08
08
OW
OW
OF 01 FO
EA
046C R
0038
LOAD GLOBAL OEsCR I PTOR TABLE REG I 5 TER
OOFH
8YTE
oX,WORD PTR (sl).GDTPTR
8YTE
OFFSET CS:??0005
001H
OFFSET CS:? ?0006
(51) .IDTPTR
OOFH
8YTE
BX,WORD PTR [SI].IDTPTR
8YTE
OFFSET CS: n0001
001H
OFFSET CS: '?0008
INTERRUPT DESCRIPTOR TABLE REGISTER
~~' V I RTUAL_ENABLE
MACHINE STATUS WORD NEEDED TO
SWITCH TO VIRTUAL MODE
OOFH,OOIH,OFOH
OEAH
OFFSET VMOOE
BIO_CS
PURGE PRE-FETCH QUEUE WITH FAR ..JUMP
- TO OFFSET
- I N SEGMENT -PROTECTED MODE SELECTOR
VMODE:
88 0018
8E 08
880020
8E CO
88 0028
8E DO
;---------------------------------------;
SETUP USER SEGMENT REG I STERS
:
; - - - - - - - - - - - - - - ---- - - - - - - - - - ---------- - -AX,USER OS
MOV
MOV
MOV
"OV
"OV
"OV
;
;
;
;
58
63 C4 04
6A 30
53
CB
DS,AX
AX,USER ES
ES,AX
AX,USER SS
SS, AX
-
SETUP USER'S OATA SEGMENT
TO PROTECTED MODE SELECTORS
SETUP USER' S EXTRA SEGMENT
SETUP USER'S STACK SEGMENT
---- --- - - - ------ - - - - ---- - - - -- ------- - --PUT TRANSFER ADDRESS ON STACK
AND RETURN TO THE USER
- - - - - - - - - - - - - - - - - - -- - - - - - -- --- ------- - -POP
8X
ADD
PUSH
PUSH
SP,4
USER CS
8X
RET
X_VIRTUAL
GET RETURN IP FROM THE STACK
NORM ALI ZE STACK PO INTER
SET STACK FOR A RETURN FAR
;
RETURN TO USER
I N V I RTUAL MODE
ENDP
;--- DEVICE BUSY AND
INTERRUPT COMPLETE -------------------------
THIS ROUTINE IS A TEMPORARY HANDLER FOR DEVICE 8USY
AND I NTERRUPT COMPLETE
INPUT
DEVICE_BUSY
eLe
F8
E9 0051 R
J"P
DEVICE_BUSY
CF
I NT_COMPLETE
IRET
I NT_COMPLETE
CODE
-
SEE PROLOGUE
PROC
NEAR
TURN CARRY OFF
RETURN WITH CARRY FLAG
e1 F
ENDP
PRoe
NEAR
I
RETURN
ENDP
ENDS
END
BIOS1
5-175
[BM Personal Computer MACRO Assembler
Version 2.00
B[OS2 ---- 06/10/85
B[OS [NTERRUPT ROUTINES
1
2
3
4
5
6
7
8
1-1
06-10-85
PAGE 118,121
TITLE BIOS2 - -- 06/10/85
BIOS
.286C
.LIST
CODE
SEGMENT BYTE PUBL I C
0000
9
10
11
12
13
14
PUBL [C
PUBLIC
PUBLIC
PUBLIC
PR I NT SCREEN I
RTC [NT
T[ME OF DAY I
T[MER_[NT_l-
EXTRN
EXTRN
EXTRN
CMOS READ: NEAR
CMOS-WR I TE: NEAR
DDS:NEAR
INTERRUPT ROUTINES
READ CMOS LOCATION ROUTINE
WRITE CMOS LOCATION ROUTINE
LOAD IDS) WITH OAT A SEGMENT SELECTOR
15
INT
16
17
18
19
lA H -- n[ME OF DAY)
------------------- --------------TH IS B I OS ROUT [NE ALLOWS THE CLOCKS TO BE SET OR READ
PARAMETERS:
(AHI
OOH
=
20
21
22
23
24
25
26
READ THE CURRENT CLOCK SETTING AND RETURN WITH,
ICX) = HIGH PORTION OF COUNT
lOX)
LOW PORT I ON OF COUNT
IALl
0 TIMER HAS NOT PASSED 24 HOURS SINCE LAST READ
I I F ON ANOTHER DAY. I RESET TO ZERO AFTER READ I
=
=
lAH)
01H
SET THE CURRENT CLOCK USING,
ICX)
HIGH PORTION OF COUNT
lOX) = lOW PORT I ON OF COUNT.
=
27
28
29
30
NOTE:
31
COUNTS OCCUR AT THE RATE OF 1193180/65536 COUNTS/SECOND
lOR ABOUT 18.2 PER SECOND -- SEE EQUATES I
32
33
(AH)
02H
READ THE REAL TIME CLOCK AND RETURN W[TH,
(CHI = HOURS IN BCD (00-23)
(CLI = MINUTES IN BCD 100-591
(DHI = SECONDS IN BCD 100-59)
(DLI = DAYLIGHT SAVINGS ENABLE (00-01).
(AHI
03H
SET THE REAL TIME CLOCK USING,
(CHI = HOURS [N BCD (00-23)
(CLl = MINUTES IN BCD (DO-59)
IDHI = SECONDS IN BCD (DO-59)
(DLI = 01 IF DAYLIGHT SAVINGS ENABLE OPTION,
34
35
36
37
38
39
40
41
42
43
ELSE 00.
44
NOTE:
45
46
47
48
49
50
(AH)
04H
READ THE DATE FROM THE REAL T I ME CLOCK AND RETURN WITH,
(CH) = CENTURY IN BCD (19 OR 20)
(CL) = YEAR IN BCD (00-99)
(DH) = MONTH IN BCD (01-12)
lOLl = DAY IN BCD (01-31).
(AH)
05H
SET THE DATE INTO THE REAL TIME CLOCK USING,
(CHI = CENTURY IN BCD (19 OR 20)
(CLl = YEAR IN BCD (00 - 99)
(OH) = MONTH IN BCD (01
121
lOLl = DAY IN BCD (01-31).
IAH)
06H
SET THE ALARM TO INTERRUPT AT SPECIFIED T[ME,
(CH) = HOURS IN BCD (00-23 (OR FFH) I
ICl) = MINUTES IN BCD (00-59 (OR FFH))
IDH) = SECONDS [N BCD (00-·59 (OR FFH)).
(AHl
= 07H
51
52
53
54
55
56
57
58
59
(DLl= 00 IF DAYLIGHT SAVINGS TIME ENABLE IS NOT ENABLED.
lOLl = 0 I ENABLES TWO SPEC I AL UPDATES THE lAST SUNDAY IN
APRIL
(I :59:59 --> 3:00:00 AMI AND THE LAST SUNDAY IN
OCTOBER (I :59:59 --> 1 :00:00 AM) THE FIRST T[ME.
60
61
62
63
64
65
66
67
68
69
70
NOTES:
71
72
73
74
75
76
77
78
79
80
8[
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
I II
112
113
ASSUME
0000
0000
0001
0004
0005
0007 IE
0008 £8 0000 E
OOOB 56
OOOC CI E8 08
OOOF 03 CO
00118BFO
0013 FA
0014 2E: FF 94 0021
0019
001A
001C
0010
00 I E
OOIE
TIME OF DAY I
-STI-
FB
80 FC 08
F5
72 17
CMP
CS1CODE,DS:DATA
PROC
FAR
AH,(RTC_TBE-RTC_TB) /2
JC
T[ME_9
PUSH
CALL
PUSH
SHR
ADD
DS
DDS
MDV
51
AX,8
AX,AX
S I ,AX
eLI
R
CALL
CA 0002
R
R
R
R
R
R
R
R
BIOS2
CS: [SI ]+OFFSET RTC_TB
5T1
MDV
AH,O
POP
POP
as
51
I NTERRUPTS BACK ON
CHECK IF COMMAND IN VALID RANGE 10-7)
COMPLEMENT CARRY FOR ERROR EX I T
EXIT W[TH CARRY := I [F NOT VALID
SAVE USERS IDS) SEGMENT
GET OAT A SEGMENT SELECTOR
SAVE WORK REGISTER
CONVERT FUNCT I ON TO BYTE OFFSET
CONVERT FUNCT I ON TO WORD OFFSET I CY=O)
PLACE INTO ADDRESSING REGISTER
NO I NTERRUPTS OUR I NG T I ME FUNCT IONS
VECTOR TO FUNCTION REQUESTED WITH CY=O
RETURN W [TH CARRY FLAG SET FOR RESULT
I NTERRUPTS BACK ON
CLEAR (AH I TO ZERO
RECOVER USERS REG I STER
RECOVER USERS SEGMENT SELECTOR
RETURN WITH CY= 0 IF NO ERROR
RET
RTC_TB
DW
OW
OW
DW
DW
DW
DW
DW
RTC_ TBE EQU
0031
5-176
INTERRUPT FUNCTION.
eMe
FB
B4 00
5E
IF
0021 0031
0023 0042
0025 0050
0027 0075
0029 OOA8
0028 DOCS
0020 0104
002F 0145
= 0031
RESET THE ALARM
FOR ALL RETURNS CY= 0 FOR SUCCESSFUL OPERATION.
FOR IAHI= 2, 4, 6 - CARRY FLAG SET IF REAL TIME CLOCK NOT OPERATING.
FOR I AHl = 6 - CARRY FLAG SET I F ALARM ALREADY ENABLEO.
FOR THE ALARM FUNCT I ON (AH = 6) THE USER MUST SUPPLY A ROUT I NE AND
INTERCEPT THE CORRECT ADDRESS IN THE VECTOR TABLE FOR INTERRUPT 4AH.
USE OFFH FOR ANY "DO NOT CARE" POSITION FOR INTERVAL INTERRUPTS.
INTERRUPTS ARE DISABLED DURING DATA MODIF[CATION.
AH & AL ARE RETURNED MODIFIED AND NOT DEFINED EXCEPT WHERE IND[CATEo.
RTC 00
RTC-IO
RTC-ZO
RTC-30
RTC-40
RTC-50
RTC-60
RTC-10
$
-
ROUTINE VECTOR TABLE (AH) =
READ CURRENT CLOCK COUNT
SET CLOCK COUNT
READ THE REAL T I ME CLOCK T [ME
SET REAL T I ME CLOCK T I ME
READ THE REAL T I ME CLOCK DATE
SET REAL T I ME CLOCK DATE
SET THE REAL TI ME CLOCK ALARM
RESET ALARM
IBM Personal Computer MACRO Assembler
Version 2.00
81052 ---- 06/10/85
8105 INTERRUPT ROUTINES
114
115
116
117
118
119
120
121
122
123
124
125
126
121
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
0031
0031 AO 0070 R
0034 C6 06 0070 R 00
0039 88 DE 006E R
003088 16 006C R
0041 C3
0042
0042
0046
004A
004F
89 16 006C R
89 OE 006E R
C6 06 0070 R 00
C3
0050
0050 E8 0168 R
0053 72 IF
0055
0057
005A
005C
DOSE
0061
0063
0065
0067
006A
006C
006E
0071
0073
0074
0074
80 00
E8 0000
8A FO
80 08
E8 0000
2401
8A DO
80 02
E8 0000
SA C8
80 04
E8 0000
8A E8
F8
E
E
E
E
C3
14'
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
0075
0075 E8
0078 73
007A E8
0070
0070 8A
007F 80
0081 E8
0084 8A
0086 80
0088 E8
008B 8A
008080
008F E8
0092 B8
0095 E8
0098 24
009A OC
009C 80
009F OA
OOAI 86
00A3 E8
00A6 F8
00A7 C3
113
174
175
176
00A8
00A8 E8 0168 R
OOAB 72 10
111
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
20 I
202
203
204
205
206
207
208
209
210
211
212
213
214
2' 5
216
217
218
219
220
221
222
223
224
225
226
221
OOAD
OOAF
0082
0084
0086
0089
0088
0080
OOCO
00C2
00C4
00C7
00C9
'OOCA
OOCA
80
E8
8A
80
E8
8A
80
E8
8A
BO
E8
8A
F8
016B R
03
0154 R
E6
00
0000 E
EI
02
0000 E
E5
04
0000 E
OB08
0000 E
62
02
E2 01
C2
EO
0000 E
07
0000
DO
08
0000
FO
09
0000
C8
32
0000
E8
E
E
E
E
PAGE
RTC_OO
PROC
MOV
MOV
MOV
MOV
RET
NEAR
AL,IltTIMER OFL
IltTIMER OFL,O
CX,IltTIMER HIGH
DX,.T I MER:LOW
CALL
JC
UPD I PR
RTC:Z9
MOV
AL, CMOS SECONDS
CMOS READ
DH,AL
AL, CMOS REG B
CMOS READ
AL,000000018
DL,AL
AL,CMOS MINUTES
CMOS READ
CL,AL
AL,CMOS HOURS
CMOS READ
CH,AL
MOV
MOV
CALL
AND
MOV
MDV
CALL
MOV
MOV
CALL
MOV
CLC
CALL
JNC
CALL
SET RTC TIME
CHECK FOR UPDATE IN PROCESS
GO AROUND ] F CLOCK OPERAT I NG
ELSE TRY INITIALIZING CLOCK
MOV
MOV
CALL
MOV
MOV
CALL
"OV
"OV
CALL
"OV
CALL
AND
OR
AND
OR
XCHG
CALL
CLC
RET
UPO IPR
RTC-35
RTC:STA
AH,oH
AL, CMOS SECONDS
CMOS WRTTE
AH,CL
~~o;M~~T~~NUTES
AH,CH
~~o;M~~T~~URS
AX.XTCMOS REG B
CMOS REAoAL,oTIOOOIOB
AL, 000000 1 DB
OL,000000018
AL.DL
AH,AL
CMOS_WRITE
CALL
JC
UPO IPR
RTC:49
"OV
CALL
"OV
"OV
CALL
"OV
"OV
CALL
"OV
MOV
CALL
"OV
CLC
AL.CMOS DAY MONTH
CMOS READ
DL,AL
Al, CMOS MONTH
CMOS READ
DH,AL
AL I CMOS YEAR
CMOS READ
CL,AL
AL, CMOS CENTURY
CMOS READ
CH,AL
C3
RET
CALL
JNC
CALL
UPO IPR
RTC-55
RTC:STA
88
E8
8A
80
E8
SA
BO
E8
8A
BO
E8
8A
BO
E8
B8
E8
24
86
E8
F8
C3
0006
0000
E2
07
0000
E6
08
0000
EI
09
0000
E5
32
0000
0808
0000
7F
EO
0000
"OV
CALL
"OV
"OV
CALL
"OV
"OV
CALL
"OV
"OV
CALL
"OV
"OV
CALL
"OV
CALL
AND
XCHG
CALL
CLC
RET
AX,CMOS DAY WEEK
CMOS WRTTE AH,D[
AL, CMOS, DA Y MONTH
CMOS WRTTE AH,OH
0104
0104
0 I 06
0109
0108
OIOC
80
E8
A8
F9
75
08
0000 E
20
MOV
AL, CMOS REG 8
CMOS READ AL,20H
33
E
E
E
E
E
E
SET ADDRESS OF SECONDS
GET SECONDS
SAVE
ADDRESS ALARM REGI STER
READ CURRENT VALUE OF DSE BI T
MASK FOR VALID DSE BIT
SET (DLI TO ZERO FOR NO DSE 81T
SET ADDRESS OF MINUTES
GET MINUTES
SAVE
SET ADDRESS OF HOURS
GET HOURS
SAVE
SET CY= 0
RETURN WITH RESULT
E8 0168 R
73 03
E8 0154 R
E
GET RTC TIME
CHECK FOR UPDATE IN PROCESS
EXIT IF ERROR (CY= 1)
RET
CALL
TEST
5TC
JNZ
~~o;M~~T~~NTH
AH,C[
AL, CMOS YEAR
CMOS WRTTE
AH,CH .
~~o;M~~T~~NTURY
AX, X·CMOS REG B
CMOS READAL,OlFH
AH,AL
CMOS_WR I TE
I N CARRY FLAG
GET TI ME BYTE - SECONDS
ADDRESS SECONDS
UPDATE SECONDS
GET T I ME BYTE - MINUTES
ADDRESS M I'NUTES
UPDATE MINUTES
GET TI ME BYTE - HOURS
ADDRESS HOURS
UPDATE ADDRESS
ADDRESS ALARM REG I STER
READ CURRENT VALUE
MASK FOR VALID BIT POSITIONS
TURN ON 24 HOUR MODE
USE ONLY THE DSE BIT
GET DAY LIGHT SAVINGS TIME BIT (DSE)
PLACE IN WORK REGISTER AND GET ADDRESS
SET NEW ALARM 81 TS
SET CY= 0
RETURN WITH CY= a
GET RTC DATE
CHECK FOR UPDATE IN PROCESS
EXIT IF ERROR (CY= I)
ADDRESS DAY OF MONTH
READ DA Y OF MONTH
SAVE
ADDRESS MONTH
READ MONTH
SAVE
ADDRESS YEAR
READ YEAR
SAVE
; ADDRESS CENTURY LOCATION
; GET CENTURY BYTE
; SAVE
; SET CY=O
RETURN WITH RESULTS
ooca
DOCS
OOCE
0000
0003
0003
0006
0009
0008
DODD
ODED
00E2
00E4
00E7
00E9
00E8
OOEE
OOFO
00F2
00F5
OOFe
OOFB
OOFD
OOFF
0102
0103
READ T I ME COUNT
GET THE OVERFLOW FLAG
AND THEN RESET THE OVERFLOW FLAG
GET COUNT OF T I ME HIGH WORD
GET COUNT OF T I ME LOW WORD
RETURN WITH NO CARRY
SET T I ME COUNT
SET T I ME COUNT LOW WORD
SET THE T I ME COUNT HIGH WORD
RESET OVERFLOW FLAG
RETURN WITH NO CARRY
MOV
MOV
MOV
RET
CALL
1-2
06-10-e5
I N CARRY FLAG
SET RTC DATE
CHECK FOR UPDATE IN PROCESS
GO AROUND I F NO ERROR
ELSE I NIT I ALI ZE CLOCK
ADDRESS OF DAY OF WEEK 8YTE
LOAD ZEROS TO DAY OF WEEK
GET DAY OF MONTH BYTE
ADDRESS OA Y OF MONTH BYTE
WRITE OF DAY OF MONTH REGISTER
GET MONTH
ADDRESS MONTH BYTE
WR I TE ,MONTH REG I STER
GET YEAR eYTE
ADDRESS YEAR REG I STER
~~i T~E~~~=Y R~~i~TER
ADDRESS CENTURY BYTE
WRITE CENTURY LOCATION
ADDRESS ALARM REG I STER
READ CURRENT SETT I NGS
CLEAR 'SET BIT'
MOVE TO WORK REG I STER
AND START CLOCK UPDATING
SET CY= 0
RETURN CY=O
SET RTt ALARM
ADDRESS ALARM
READ ALARM REG! STER
CHECK FOR ALARM ALREADY ENABLED
SET CARRY I N CASE OF ERROR
ERROR EX I T I F ALARM SET
BIOS2
5-177
IBM Person.1 Computer MACRO Assembler
Version 2.00
81052 ---- 0&110/85
8105 INTERRUPT ROUTINES
228
01 OE E8 01&8
229
0 I I 1 13 03
230
0113 E8 0154
231
0116
23201168AE6
233
0118 BO 01
234
01 1 A E8 0000
23501108AEI
236
011F8003
231
0121 E8 0000
238
0124 8A E5
239
0126 BO 05
240
0128 E8 0000
241
0128 E4 AI
242
0120 24 FE
243
012F E6 AI
244
0131 88 0808
245
0134 E8 0000
246
0131 24 lF
241
0139 OC 20
246
0138 86 EO
249
0130 E8 0000
250
0140 F8
251
0141
252
0141 88 0000
253
0144 C3
25.
255
256
251
258
259
260
261
262
0145
0145
0148
0148
0140
014F
0152
0153
88
E8
24
86
E8
R
R
E
CALL
JNe
CALL
UPD IPR
RTC-65
RTC:STA
CHECK FOR UPDATE I N PROCESS
SKIP INITIALIZATION IF NO ERROR
ELSE INITIALIZE CLOCK
MOV
NOV
AH,OH
GET SECONDS BYTE
AOORESS THE SECONDS ALARM REG I STER
INSERT SECONDS
GET MINUTES PARAMETER
ADDRESS MINUTES ALARM REGISTER
INSERT MINUTES
GET HOURS PARAMETER
AODRESS HOUR ALARM REG I STER
I NSERT HOURS
READ SECOND INTERRUPT MASK REGISTER
ENABLE ALARM TIMER BIT (CY= O)
WRITE UPDATED MASK
ADDRESS ALARM REGI STER
READ CURRENT ALARM REG I STER
ENSURE SET BIT TURNED OFF
TURN ON ALARM ENABLE
MOVE MASK TO OUTPUT REG I STER
WR ITE NEW ALARM MASK
SET CY= 0
CALL
NOV
NOV
E
CALL
NOV
NOV
E
CALL
IN
AH,CC
AL, CMOS MIN ALARM
CMOS WRTTE AH,CH
~~o;M~~T~~_ALARM
XCHG
CALL
MOV
AX,O
OR
E
~~o;M~~T~~C_ALARM
AL,INT80 1
AL,OFEH
INT80l,AL
AX.X·CMOS REG 8
CMOS READAL,07FH
AL,20H
AH,AL
CMOS_WRITE
AND
OUT
MOV
CALL
AND
E
eLe
RET
0808
0000 E
51
EO
0000 E
NOV
CALL
AND
XCHG
CALL
eLe
Fe
C3
1-3
0&-10-85
~~O~·~~~g_REG_8
AL,57H
AH,AL
CMOS_WRITE
RET
CLEAR AX REG I STER
RETURN WITH RESULTS
I N CARRY FLAG
RESET ALARM
ADDRESS ALARM REG I STER (TO BOTH AH, AL I
READ ALARM REG I STER
TURN OFF ALARM ENABLE
SAVE DATA AND RECOVER ADDRESS
RESTORE NEW VALUE
SET CY= a
RETURN WITH NO CARRY
263
2&4
205
266
261
268
269
210
211
212
213
214
215
270
211
27.
219
280
261
282
283
284
285
286
287
288
289
290
291
292
293
294
295
0154
RTC_OO
0154
015488
0151 E8
a I 5A B8
also E8
0160 80
0162 E8
0165 BO
0161 E8
016A C3
RTC STA PROC
MOV
CALL
260A
0000
820B
0000
OC
0000
00
0000
E
CALL
NOV
E
CALL
NOV
E
CALL
RET
RTC_STA ENOP
51
89 0320
80
FA
E8
A8
14
F8
E2
33
F9
OA
UPO IPR PROC
PUSH
MOV
MOV
CALL
TEST
JZ
F3
LOOP
CO
XOR
STe
ex
CX,800
AL,CMOS_REG_A
CMOS READ
AL,80H
UPD_90
STI
59
FA
C3
POP
eLi
RET
0182
5-178
NEAR
eLI
0000 E
80
06
290
297
INITIALIZE REAL TIME CLOCK
ADDRESS REGISTER A AND LOAD DATA MASK
INITIALIZE STATUS REGISTER A
SET ~SET BIT" FOR CLOCK INITIALIZATION
AND 24 HOUR MODE TO REGISTER B
ADDRESS REG I STER C
READ REGISTER C TO INITIALIZE
ADDRESS REG I STER 0
READ REGISTER D TO INITIALIZE
NOV
E
0168
0168
016B
016C
016F
a 16F
0171
0112
OilS
0171
0119
all A
01 7C
ailE
a I1F
a 17F
0180
0181
ENOP
UPD_IPR ENDP
BIOS2
UPD 10
AX,AX
ex
WAIT TILL UPDATE NOT IN PROGRESS
SAVE CALLERS REGISTER
SET TIMEOUT LOOP COUNT
ADDRESS STATUS REGISTER A
NO TIMER INTERRUPTS DURING UPDATES
READ UPDATE IN PROCESS FLAG
IF UIP BIT IS ON ( CANNOT READ TIME)
EX I T WITH CY= 0 I F CAN READ CLOCK NOW
ALLOW INTERRUPTS WH I LE WA IT I NG
LOOP TILL READY OR TIMEOUT
CLEAR RESULTS I F ERROR
SET CARRY FOR ERROR
RESTORE CALLERS REG I STER
I NTERRUPTS OFF OUR I NG SET
RETURN WITH CY FLAG SET
IBM Personal Computer MACRO Assembler
Version 2.00
B[OS2 06/10/85
810S INTERRUPT ROUTINES
29.
299
300
30 I
302
303
304
305
306
307
30.
309
310
311
312
313
314
315
316
317
31.
319
320
321
322
323
324
325
326
327
32.
329
330
331
332
333
334
335
336
337
33.
339
340
341
342
343
344
345
346
347
34.
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
36.
369
370
371
372
373
374
375
376
377
378
379
380
3.,
382
3'3
3.4
1-4
06-10-85
PAGE
HARDWARE [NT
10 H -- ( IRQ
ALARM I NTERRUPT HANDLER (RTC)
TH I S ROUT I NE HANDLES THE
T I MER.
I NPUT FREQUENCY
EVERY SECOND FOR THE PER
THE INTERRUPT WILL OCCUR
LEVEL
8)
-----------------------------------
PER I 00 I C AND ALARM [NTERRUPTS FROM THE CMOS
lSI. 024 KHZ OR APPROX I MATEL Y 1024 INTERRUPTS
100 I C INTERRUPT.
FOR THE ALARM FUNCT I ON,
AT THE DES I GNATED T [ME.
INTERRUPTS ARE ENABLED WHEN THE EVENT OR ALARM FUNCTION IS ACTIVATED.
FOR THE EVENT INTERRUPT, THE HANDLER WILL DECREMENT THE WA [T COUNTER
AND WHEN IT EXP I RES WILL SET THE DES [GNATED LOCAT I ON TO 80H.
FOR
THE ALARM INTERRUPT. THE USER MUST PRO V I DE A ROUT I NE TO INTERCEPT
THE CORRECT ADDRESS FROM THE VECTOR TABLE [NVOKED BY INTERRUPT 4AH
PR I OR TO SETT I NG THE REAL T I ME CLOCK ALARM (I NT 1 AH, AH= 06HJ.
;
0182
0182 IE
0183 50
0184 51
0185
0185
0188
018A
o 18B
0180
018F
88
E6
90
E4
A8
14
0191
0193
0195
0\96
0198
o 19A
0\9C
86
E6
90
E4
22
A8
14
- -- - - - - - - - - - - - - ---------- - -- - - - - - - -- -- -- - - -- - - -- - - - - - -- - - -- - -- - - - - - - - - -- - - ----
RTC
-
RTC
INT PROC
PUSH
PUSH
PUSH
I
ALARM INTERRUPT
LEAVE INTERRUPTS 0 t SABLED
SAVE REGI STERS
FAR
OS
AX
01
;
I:
8BBC
70
OOV
OUT
NOP
IN
11
60
40
TEST
"Z
AL,CMOS DATA
AL,OIIOOOOOB
RTC I 9
EO
10
XCHG
OUT
NOP
AH.AL
CMOS _PORT, AL
1\
C4
40
30
IN
AL, CMOS DATA
AL ,AH AL, 010000008
RTC_I_5
AND
TEST
"Z
DECREMENT WAlT COUNT BY
019E E8 0000 E
01 AI
2E 009C R 0300
o I A1 83 IE 009E R 00
OIAC 13 20
"
CALL
005
SU8
PRTC LOW,0916
PRTC-HIGH,O
RTC T 5
588
"NC
CHECK FOR SECOND INTERRUPT
~~O~ c~g~'f~~~-B+NM1) ·H+CM~\lj~~~EC;~~~M; F~~~R~A~~O Ag~~~~~
;
;
;
;
I/O DELAY
READ AND RESET INTERRUPT REQUEST FLAGS
CHECK FOR EITHER INTERRUPT PENDING
EXIT IF NOT A VALID RTC INTERRUPT
SAVE FLAGS AND GET ENABLE AODRESS
WRITE ALARM ENABLE MASK ADDRESS
I/O DELAY
READ CURRENT ALARM ENABLE MASK
ALLOW ONLY SOURCES THAT ARE ENABLED
CHECK FOR PER I 00 I C [NTERRUPT
SKIP IF NOT A PERIODIC INTERRUPT
INTERRUPT
;
;
;
;
INTERVAL
ESTABLISH DATA SEGMENT ADDRESSAB1LlTY
DECREMENT COUNT LOW BY 1/1024
ADJUST HIGH WORD FOR LOW WORD BORROW
SKIP TILL 32 BIT WORD LESS THAN ZERO
TURN OFF PER I 00 I C I NTERRUPT ENABLE
01 AE
OlAF
0lB2
01 B4
0lB5
0lB1
0lB9
OIBB
OIBO
OIBF
01 C I
01 C6
OICA
a 1CO
OICE
DICE
0100
50
88
E6
90
E4
24
86
E6
86
E6
C6
C5
C6
58
8B8B
10
PUSH
OOV
OUT
NOP
AX
AX, X· (CMOS REG B+NM I )
CMOS_PORT ,AL -
71
BF
C4
10
C4
11
06 OOAO R
3E 0098 R
05 80
IN
XCHG
OUT
XCHG
OUT
MOV
AL,CMOS DATA
AL.OBFHAL,AH
CMOS PORT, AL
AL,AH
CMOS DATA,AL
OlIRTC-WA I T FLAG, 0
01 ,DWORD PTR ilIIUSER FLAG
BYTE PTR [OI],80H AX
0102
0104
0106
0101
0108
01DA
010B
OIDC
OIDC
BO 00
E6 10
FB
52
CO 4A
5A
FA
LOS
MOV
POP
RTC
I
5:
A8 20
14 OA
"Z
AL,OOIOOOOOB
RTC I 1
TEST FOR ALARM [NTERRUPT
SK [P USER I NTERRUPT CALL
MOV
OUT
AL,CMOS REG 0
CMOS_PORT ,AL
POINT TO DEFAULT READ ONLY REGISTER
ENABLE NM [ AND CMOS ADDRESS TO DEF AUL T
I NTERRUPTS BACK ON NOW
TEST
STI
PUSH
4AH
OX
CLI
EB A1
BO
E6
BO
E6
E6
SF
58
IF
CF
00
10
20
AO
20
-
I
-
9:
MOV
OUT
MOV
OUT
OUT
POP
POP
POP
[RET
TRANSFER TO USER ROUT! NE
BLOCK I NTERRUPT FOR RETRY
RESTART ROUTINE TO HANDLE DELAYED
ENTRY AND SECOND EVENT BEFORE DONE
"MP
RTC
[F NOT ALARM
OX
INT
POP
7,
o IDE
OIOE
OlEO
0lE2
01 E4
0lE6
01E8
01 E9
OlEA
0lE8
AND
SAVE INTERRUPT FLAG MASK
I NTERRUPT ENABLE REG I STER
WR I TE ADDRESS TO CMOS CLOCK
I/O DELAY
READ CURRENT ENABLES
TURN OFF PIE
GET CMOS ADDRESS AND SAVE VALUE
ADDRESS REGI STER B
GET NEW INTERRUPT ENABLE MASK
SET MASK IN INTERRUPT ENABLE REGISTER
SET FUNCT I ON ACT I VE FLAG OFF
SET UP (DS:DI) TO POINT TO USER FLAG
TURN ON USERS FLAG
GET I NTERRUPT SOURCE BACK
AL,CMOS REG 0
CMOS PORT. AL
AL,EDI
INTBOO,AL
INTAOO ,AL
01
AX
OS
EX I T - NO PEND I NG INTERRUPTS
PO I NT TO DEFAULT READ ONLY REG I STER
ENABLE NM I AND CMOS ADDRESS TO DEF AUL T
END OF INTERRUPT MASK TO 6259 - 2
TO 8259 - 2
TO 8259 - I
RESTORE REGI STERS
END OF
INTERRUPT
BIOS2
5-179
1-5
IBM Personal Computer MACRO Assembler
Version 2.00
810S2 ---- 06/10/85
8105 INTERRUPT ROUTINES
385
386
381
388
389
390
391
392
393
394
395
396
391
398
399
400
401
402
403
404
405
406
401
408
409
410
411
412
413
414
415
416
411
418
419
420
421
422
423
424
425
426
421
428
429
430
431
432
433
434
435
436
431
438
439
440
441
442
443
444
445
446
PAGE
;--- lNT
05 ~ ----------------------------------------------------------------; PR I NT SCREEN
-THIS LOGIC WILL BE INVOKED BY INTERRUPT 05H TO'PRINT THE SCREEN.
;
THE CURSOR POSITION AT THE TIME THIS ROUTINE IS INVOKED WILL BE
SAVED AND RESTORED UPON COMPLETION.
THE ROUTINE I S INTENDED TO
RUN WITH INTERRUPTS ENABLED.
IF A SUBSEQUENT PRINT SCREEN KEY
IS DEPRESSED WHILE THIS ROUTINE IS PRINTING IT WILL 8E IGNORED.
THE BASE PR I NTERS STATUS I S CHECKED FOR NOT BUSY AND NOT OUT OF
PAPER.
AN INITIAL STATUS ERROR WILL ABEND THE PRINT REQUEST.
ADDRESS
0050:0000
CONTAINS THE STATUS OF THE PRINT SCREEN:
50: a
= 0
PR I NT
FROM
PRINT
ERROR
= 1
= 255
SCREEN HAS NOT BEEN CALLED OR UPON RETURN
A CALL THIS INDICATES A SUCCESSFUL OPERATION.
SCREEN IS IN PROGRESS - IGNORE THIS REQUEST.
ENCOUNTERED DURING PRINTING.
01EC
DELAY INTERRUPT ENA8LE TILL FLAG SET
01EC
OlEO
01EE
01EF
01 FO
01F1
01F4
0lF9
01F8
0200
0201
0203
IE
50
53
51
52
E8
80
14
C6
F8
84
CD
0000 E
3E 0100 R 01
14
06 0100 R 01
PUSH
PUSH
PUSH
PUSH
PUSH
CALL
CMP
JE
MOV
OF
10
MOV
INT
511
0205 8A CC
0201 8A 2E 0084 R
0208 FI:: C5
MOV
MOV
INC
I- - ;
;
;
;
~;~
0200
020F
021 1
0213
0216
0219
33
84
CD
80
F6
15
02
02
17
F4 80
C4 AD
4E
OS
SAVE WORK REGISTERS
AX
BX
CX
OX
USE 0040:0100 FOR STATUS AREA STORAGE
GET STATUS 8YTE DATA SEGMENT
DDS
SEE IF PR I NT ALREADY I N PROGRESS
"STATUS BYTE, 1
PRI90
EX I T IF PR I NT ALREADY I N PROGRESS
INDICATE PRINT NOW IN PROGRESS"
IllSTATUS_BYTE, 1
MUST RUN WITH I NTERRUPTS ENABLED
WILL REQUEST THE CURRENT SCREEN MODE
AH,OFH
(All = MODE
10H
(AH)= NUMBER COLUMNS/LINE
(BHl= VISUAL PAGE
WILL toJAKE USE OF (ex) REG I STER TO
CL,AH
CONTROL ROWS ON SCREEN " COLUMNS
CH,IllROWS
CH
ADJUST ROWS ON D I SPLA Y COUNT
(CL)= NUMBER COLUMNS/LINE
(CH) = NUMBER OF ROWS ON D I SPLA Y
- -- - - -- - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - -- - - -- - - - - - -- - - - - --AT THIS POINT WE KNOW THE COLUMNS/LINE COUNT IS IN (CLf :
AND THE NUMBER OF ROWS ON THE DISPLAY IS IN'(CH).
THE PAGE IF APPLICABLE IS IN (BH).
THE STACK HAS
(OS), (AX), (BX), (CX), (OX)
PUSHEO.
----
-~; ~~;
---------------------;;; -;;;
~~
~~E~
------------------
MOV
INT
XOR
TEST
JNZ
AH,02H
17H
AH,080H
AH, OAOH
PRI80
SET PRINTER STATUS REQUEST COMMAND
REQUEST CURRENT PRINTER STATUS
CHECK FOR PRINTER BUSY (NOT CONNECTED)
OR
OUT OF PAPER
ERROR EXIT IF PRINTER STATUS ERROR
021B E8 0215 R
CALL
CRLF
CARR I AGE RETURN LINE FEED TO PR INTER
021E
021F
0221
0223
0224
0225
SAVE SCREEN SOUNDS
PUSH
CX
MOV
NOW READ THE CURRENT CURSOR POS I T I ON
AH',03H
10H
AND RESTORE AT END OF ROUT I NE
INT
RECALL
SCREEN BOUNDS
POP
CX
PRESERVE THE OR I G I NAL POS I T I ON
OX
PUSH
INITIAL CURSOR (0,0) AND FIRST PRINTER
DX,DX
XOR
; - - - - - - - - - - - - -- -- - - - -- -- - - -- -- -- -- - - - - - - - - - -- - - - - - - - - - - - - - - -;
TH I S LOOP I S. TO READ EACH CURSOR POS I T I ON FROM THE
;
SCREEN AND PRINT IT.
(BH)= VISUAL PAGE
(CH)= ROWS
; - - -- -- -- - - - -- - - - - - - - - - - - - - - - - - - ------ - - - - - - ---- -- - -- --- - -- - - ---
51
B4 03
CD 10
59
52
33 02
-
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
410
411
412
473
474
475
416
411
418
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
06-10-85
0227
0221
0229
022B
0220
022F
0231
0233
0235
0235
0236
0238
023A
023C
0230
0240
0242
0244
0246
0248
024A
024C
0240
0250
0251
0253
0255
52
33
32
CD
5A
F6
15
FE
3A
75
32
8A
52
E8
5A
FE
3A
75
0251
0258
025A
025C
0250
0262
5A
B4
CD
FA
C6
EB
0264
0264
0265
0267
0269
0269
026A
026F
026F
0270
0271
0272
0273
0214
0215
-
--
PRIlO:
B4
CD
B4
CD
OA
75
BO
02
10
08
10
CO
02
20
"OV
INT
MOV
INT
OR
JNZ
MOV
AH,02H
10H
AH,08H
10H
AL,AL
PRI20
AL,
INDICATE CURSOR SET REQUEST
NEW CURSOR POSITION ESTABLISHED
INDICATE READ CHARACTER FROM DISPLAY
CHARACTER NOW IN, (AL)
SEE ,IF VALID CHAR
JUMP I F VALl D CHAR
ELSE MAKE I T A BLANK
OX
DX,DX
AH,AH
C6
EE
DO
PUSH
XOR
XOR
INT
POP
TEST
JNZ
INC
CMP
JNZ
XOR
MOV
PUSH
CALL
POP
INC
CMP
JNZ
SAVE CURSOR POSITION
INDICATE FIRST PRINTER (DX= Ol
INDICATE PRINT CHARACTER IN (AL)
PR I NT THE CHARACTER
RECALL CURSOR POS I T I ON
TEST FOR PR I NTER ERROR
EX I T I F ERROR DETECTED
ADYANCE TO NEXT COLUMN
SEE IF AT END OF I-INE
I F NOT LOOP FOR NEXT COLUMN
BACK TO COLUMN a
(AH) =0
SAVE NEW CURSOR POSITION
LINE FEED ,CARR I AGE RETURN
RECALL CURSOR POS I T I ON
ADVANCE TO NEXT LINE
FINI SHED?
I F NOT LOOP FOR NEXT LI NE
02
10
POP
MOV
INT
OX
AH,02H
10H
PR120:
02
E4
11
C4 29
22
C2
CA
OF
02
E2
0275 R
I1H
OX
AH,29H
PRI70
DL
CL,DL
PRIIO
DL,DL
AH.DL
OX
CRLF
OX
DH
CH,DH
PRll0
MOV
JMP
OSTATUS BYTE,O
SHORT PRI90
GET CURSOR POSITION
INDICATE REQUEST CURSOR SET
CURSOR POS I T I ON RESTORED
BLOCK INTERRUPTS TILL STACK CLEARED
MOVE OK RESULTS FLAG TO STATUS BYTE
EXIT PRINTER ROUTINE
-
POP
MOV
INT
OX
AH,02H
10H
ERROR EXIT
GET CURSOR POSITION
INDICATE REQUEST CURSOR SET
CURSOR POSITION RESTORED
CLI
06 0100 R 00
OB
PR170:
5A
B4 02
CD 10
PR180:
CLI
FA
C6 06 0100 R FF
BLOCK. INTERRUPTS TILL STACK CLEARED
SET ERROR FLAG
MOV
PR190:
5A
59
5B
58
IF
CF
5-180
POP
POP
POP
POP
POP
IRET
PRINT_SCREEN_'
BIOS2
Ox
CX
BX
AX
OS
EX IT ROUT I NE
RESTORE ALL THE REGISTERS USED
RETURN WITH
ENOP
I NIT I AL
I NTERRUPT MASK
1-6
IBM Personal Comput.er MACRO Assembler
Version 2.00
BIOS2 ---- 06/10/85
BIOS INTERRUPT ROUTINES
06-10-85
4 ••
500
501
502
0215
,-----
CARRIAGE RETURN. LINE FEED SU8ROUTINE
CRLF
PROC
NEAR
OX.OX
AX,CR
CRLF
XOR
MOV
INT
MOV
INT
RET
ENOP
SENO CR,LF TO FIRST PRINTER
ASSUME FIRST PRINTER lOX: OJ
GET THE PRINT CHARACTER COMMAND ANO
THE CARR I AGE RETURN CHARACTER
NOW GET THE LINE FEED AND
SENO I T TO THE B I OS PR I NTER ROUT I NE
503
504
505
506
501
508
509
510
0215
0211
0211.
027C
027F
0281
0282
33
B8
CD
B8
CO
C3
02
0000
17
OOOA
17
I7H
AX,LF
I7H
511
512
513
514
515
51.
;-- HARDWARE INT
08 H -- t IRQ LEVEL a ) ------------------------------------I
THIS ROUTINE HANDLES THE TIMER INTERRUPT FROM FROM CHANNEL 0 OF
;
THE
8254
TIMER.
INPUT FREQUENCY IS 1.19318 MHZ AND THE DIVISOR
I
IS 65536. RESULTING IN APPROXIMATELY 18.2 INTERRUPTS EVERY SECOND.
;
517
518
51'
520
521
522
523
524
525
52.
527
528
52.
530
531
532
533
534
535
536
537
538
539
540
541
542
543
THE INTERRUPT HANDLER MAINTAINS A COUNT t4016C) OF INTERRUPTS SINCE
POWER ON TIME. WHICH MAY 8E USED TO ESTA8LISH TIME OF DAY.
THE INTERRUPT HANDLER ALSO DECREMENTS THE MOTOR CONTROL COUNT (40140)
OF THE 0 I SKETTE. AND WHEN IT EXP I RES. WILL TURN OFF THE
a I SKETTE MOTOR ( s I I AND RESET THE MOTOR RUNN I NG FLAGS.
THE I NTERRUPT HANDLER WILL ALSO I NVOKE A USER ROUT 1NE THROUGH
INTERRUPT 'CH AT EVERY TIME TICK.
THE USER MUST CODE A
ROUTINE AND PLACE THE CORRECT ADDRESS IN THE VECTOR TA8LE.
I - - ----------- --------------------- ----------- - -- -- ------ ---- -- - - - - - - - - - - - ----0282
0282
0283
0284
0285
0286
0289
0280
028F
0293
0293
0298
029A
02AO
TIMER
F8
IE
50
52
E8
FF
75
FF
-
0000 E
06 006C R
04
06 006E R
CMF
JNZ
CMF
JNZ
1----02A2
02A4
02A 7
02AA
2B
A3
A3
C6
CO
006E R
006C R
06 0070 R 01
02AF
02AF
02B3
02B5
02BA
02BC
OZ8F
FE
75
80
BO
SA
EE
DE 0040 R
OB
26 003F R Fa
DC
03F2
551
FAR
INTERRUPTS BACK ON
OS
AX
SAVE MACHINE STATE
ESTABL I SH AOORESSA81 L I TY
1NCREMENT T I ME
GO TO TEST DAY
INCREMENT HIGH WORD OF TIME
TEST DAY
TEST FOR COUNT EQUAL I NG 24 HOURS
GO TO 01 SKETTE_CTL
OX
DDS
PTINER LOW
T4
IITlMER_HIGH
553
~~IMER_HIGH. 018H
+~IMER_LOWI oeOH
I
GO TO 01 SKETTE_CTL
TIMER HAS GONE 24 HOURS
sua
MOV
MOV
MOV
1-----
552
554
555
556
557
558
559
560
PROC
T4=
83 3E 006E R 18
75 15
81 3E 006C R OOBO
15 00
544
545
5.6
541
548
549
550
INT 1
STI
PUSH
PUSH
PUSH
CALL
INC
JNZ
INC
TEST FOR DISKETTE TIME OUT
T51
DEC
.JNZ
AND
MOV
MOV
OUT
"MOTOR COUNT
T6
"MOTOR STATUS I QFOH
AL.OCHOX I 03F2H
DX.AL
DECREMENT 0 I SKETTE MOTOR CONTROL
RETURN I F COUNT NOT OUT
TURN OFF MOTOR RUNN I NG BITS
FDC CTL PORT
TURN OFF THE MOTOR
561
562
563
OlCO
02CO CD
IC
INT
ICH
FOF
MOV
CLI
OUT
FOF
FOF
IRET
OX
AL.EOI
56'
565
566
567
568
569
570
571
02C2
02C3
02C5
02C6
02C8
02C9
02CA
SA
BO 20
FA
E6 20
58
IF
CF
INTAOO,AL
TIMER TICK INTERRUPT
TRANSFER CONTROL TO A USER ROUT I NE
RESTORE tOX)
GET END OF I NTERRUPT MASK
DISABLE INTERRUPTS TILL STACK CLEARED
END OF J NTERRUPT TO 8259 - I
AX
05
RESET MACHINE STATE
RETURN FROM 1NTERRUPT
572
573
02C8
TIMER
02CB
CODE
INT_'
ENOP
574
575
57.
ENDS
END
BIOS2
5-181
I-I
IBM Personal Computer MACRO AssembLer
Version 2.00
ORGS ----- 06/10/85 COMPATIBILITY MODULE
I
2
3
4
5
PAGE 118.121
TITLE ORGS ----- 06/10/85 COMPATIBILITY MODULE
.LIST
CODE
SEGMENT BYTE PUBL I C
0000
•
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
PUBLIC
T
8
•
10
..
II
12
13
15
I.
IT
18
20
"
21
22
23
2.
25
2.
2T
28
2.
30
31
32
33
3.
35
3.
3T
38
3.
.,.2
.0
.3
••
.5
••
.T
.8
••
50
51
52
53
5.
55
5.
5T
58
5.
.,
•0
.2
•3
••
••
.T
••
.5
.8
TO
TI
12
T3
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
T.
15
T.
11
T8
T'
80
81
82
83
8.
85
8.
8T
88
8'
.0
".3
••
••.T
••
'2
.S
ASSUME
'8
100
101
102
103
10.
105
10.
lOT
108
10.
5-182
06-10-85
AI
CONF TBL
CRT CHAR GEN
Dl 02
02.
DISK BASE
DUMMY RETURN
EIOI EI02
EI03
EI04
EI05
EI06
EI07
EI08
EI09
EI61
EI62
EI63
E164
E201
E202
E203
E301
£302
E303
E304
E401
E501
E601
E602
FI780
FI781
FI782
F1790
F1791
F3 •
F3D
F301
FO TeL.
FLOPPY
HRD
KIO
KII
KI2
KI3
KI.
KI'
K.
K.L
K1
K8
K•
M'
M5
M•
M1
NMI INT
PR I AT SCREEN
PO R-
~E~~~-~ECTOR
TUTORVECTOR T ABL.E
VloEO_PARMS
TABLE
BOOT STRAP liNEAR
CAssETTE 10 I: NEAR
011 :NEAR- -
g:~~-~~~O~:~~~~
DISKETTE 10 I :NEAR
DSKETTE SETUP: NEAR
EQUIPMENT liNEAR
INT 2871NEAR
KI6:NEAR
KEYBOARD 10 I I NEAR
~~M~~~-~T~~A~ET I: NEAR
~~: R+ N~C~~~~A~ : ~EAR
PR I NTER 10 I :NEAR
RE OIRECTINEAR
RS232 10 I I NEAR
RTC INT:REAR
SEEKINEAR
START liNEAR
TIME OF DAY liNEAR
TIME" IAT I:NEAR
VIDEO:IO_T:NEAR
CS:CODE.DSIDATA
THIS MODULE HAS BEEN AOOED TO FACILITATE THE EXPANSION OF THIS PROGRAM.
IT ALLOWS FOR THE FIXED ORG STATEMENT ENTRY POINTS THAT HAVE TO REMAIN
AT THE SAME ADDRESSES.
THE USE OF ENTRY POINTS AND TABLES WITHIN THIS
MOCULE SHOULD BE AVOIDED AND ARE INCL.UDED ONL.Y TO SUPPORT EXISTING CODE
THAT VIOLATE THE STRUCTURE AND DESIGN OF BIOS.
ALL BIOS ACCESS SHOULD
USE THE DOCUMENTED INTERRUPT VECTOR INTERFACE FOR COMPATIBILITY.
ORGS
'-2
IBM Personal Computtlr MACRO Assembler
Version 2.00
ORGS ----- 06/10/85 COMPATl81LITY MOOULE
110
II.
112
"'
II.
115
II.
I 17
I IB
I 19
1i20
121
122
PAGE
;
;
ORG
0000
0000 36
30
2E
31
31
20
34
20
20
39
39
20
38
43
49
3B
38
30
4f"
42
31
35
30
50
40
2C
20
39
52
20
20
20
.2_
•••
•••
•••
•••
'6480090 COPR.
IBM 1981,
1985
I
0020 50
20
20
0030 50
20
20
0040 SF
s
O.
41
43
31
41
43
32
3F
52 49 54
4B 45 43
00 OA
52 49 54
48 45 43
00 OA
3F SF 3F
59
4B
O.
DB
'PARITY CHECK I ' ,CR,LF
PLANAR 80ARD PAR ITY CHECK L.ATCH SET
59
4B
02
DB
'PARITY CHECK 2' ,CR,LF
I/O CHANNEL CHECK LATCH SET
00
02.
DB
'?l1??',CR,LF
'P
0041
n-
005B
005B
005B E9 0000 E
RESET:
ORG
ORG
""P
S
OE05BH
0005BH
START
-•
RESET START
VECTOR ON TO THE MOVED POST CODE
1-------------------------------:
;
POST ERROR MESSAGES
•• 2
146
147
14B
149
ISO
lSI
152
153
154
155
156
157
15B
159
160
161
162
163
164
165
166
167
16B
169
170
171
172
113
174
175
116
177
17B
179
180
181
182
I B3
184
185
IB6
IB7
IB8
1 B9
190
191
192
193
194
195
196
197
198
199
200
20 I
202
203
204
205
206
207
208
209
210
211
212
213
214
2I5
216
2I1
218
219
220
221
222
223
OOOOOH
DB
;-------------------- --- ----- ----- - - ---;
PAR TTY ERROR MESSAGES
;----------------------------------------
'23
.25
130
13.
132
13.
13.
135
13.
137
138
13_
•• 0
--------------------- -- - - -COPYRIGHT NOTICE
:
-------------------------------ORG
OEOOOH
;----
11-
.2.'2'
'27
.28
06-10-85
;
005E 20 31 30 31
79 73 74 65
42 6F 61 72
45 72 72 6f"
OA
0077 20 31 30 32
79 73 74 65
42 6f" 61 72
45 72 72 6f"
OA
0090 20 31 30 33
79 73 14 65
42 6f" 61 72
45 72 72 6f"
OA
00A9 20 31 30 34
79 73 14 65
42 6f" 61 72
45 72 72 6f"
OA
00C2 20 31 30 35
79 73 14 65
42 £If" 61 72
45 72 72 6f"
OA
00D8 20 3 I 30 36
79737465
42 6F 6 I 72
457272 £If"
OA
00F4 20 31 30 37
79 73 14 65
42 £IF 6 I 72
45 12 12 6F
OA
0100 20 31 30 38
79 73 14 65
42 6F 6 I 72
45 72 72 6F
OA
0126 20 31 30 39
79 73 14 65
42 £IF £II 12
45 72 72 6F
OA
013F 20 31 36 31
79 73 74 65
4F 70 74 69
73 20 4E 6F
53 65 74 20
75 £IE 20 53
55 50 29 00
016B 20 31 36 32
79 73 14 65
4F 10 74 69
73 20 4E £IF
53 65 74 20
75 6E 20 53
55 50 29 00
0191 20 31 36 33
69 6D 65 20
44 61 T4 65
6F 74 20 53
20 28 52 15
53 45 54 55
ODOA
0187 20 31 36 34
65 60 £IF 72
53 69 7A 65
72 72 6F 72
52 75 £IE 20
54 55 50 29
01D8 20 32 30 31
65 60 £IF 72
45 72 72 6F
OA
OIEE 20 32 30 32
65 6D £IF 72
--------------------------------
20
60
64
72
53
i20
20
00
EtOI
OB
,
lOI-System Board Error',CR,LF
INTERRUPT FAILURE
20
60
64
72
53
20
20
00
El0i2
OB
•
l02-Syste", Board Error' ,CR,LF ; TIMER FAIL.URE
20
6D
64
72
53
20
20
OD
EI03
OB
,
l03-System Board Error',CR,LF ; TIMER INTERRUPT FAIL.URE
20
6D
64
72
53
20
20
OD
Et04
OB
•
l04-Syste", Board Error',CR,LF ; PROTECTED MODE FAILURE
2D
6D
64
72
53
20
20
OD
Et05
OB
•
lOS-System Board Error·,CR,L.F I LAST B042 COMMAND NOT ACCEPTED
20
6D
64
72
53
20
20
00
EI06
DB
,
l06-System Board Error',CR,LF I CONVERTING LOGIC TEST
2D
6D
64
12
53
20
20
OD
EI07
OB
,
10T-Syst.'" Board Error',CR,LF ; HOT NMI
20
60
64
72
53
20
20
00
EI08
OB
,
lOB-Syatem Board Error',CR.L.F I
20
6D
64
72
53
20
20
OD
EI09
OB
,
109-System Board Error',CR,L.F ; LOW MEG CHIP SELECT TEST
20
60
6F
74
28
45
OA
2D
60
6F
53
20
6E
20
52
54
E161
DB
,
161-System Options Not Set-IRun SETUP) ',CR,LF
53
20
6E
EI62
DB
•
162-System Options Not Set-(Run SETUP) ',CR,LF ;CHECKSUM/CONFIG
TEST
TIMER BUS TEST
DEAD BATTERY
14 20
2B 52
45
OA
2D
26
20
65
6E
50
54
54
20
4E
74
20
29
EI63
DB
,
163-Tillle & Date Not. Set-IRun SETUP)' ,CR,LF ;CLOCK NOT UPDATING
20
79
20
20
53
00
2D
79
72
4D
20
45
28
45
OA
4D
20
OD
EI64
DB
•
164-Melllory S I ita Error- (Run SETUP)' ,CR,L.F I CMOS DOES NOT MATCH
E201
DB
20 40
79 20
E202
OB
20 I -Memory Error' ,CR,LF
,
202-Melllory Address Error' ,CR,LF
LINE ERROR 00->15
ORGS
5-183
1-3
IBM Personal Computer MACRO Aasembler
Version 2.00
ORGS ----- 06/10/85
COMPATIBILITY MODULE
224
225
226
221
228
229
230
231
232
233
234
235
236
231
238
239
240
241
242
243
244
245
246
247
246
249
250
251
252
253
254
255
256
257
258
259
260
0209
0224
0239
0250
=
41
13
12
20
65
41
73
12
20
65
64
12
20
79
55
65
20
63
20
40
46
59
64
20
00
32
60
64
20
00
33
79
20
00
33
64
45
OA
30
6F
64
45
OA
30
62
45
OA
30
72 65 13
72 72 6F
33
72
72
72
20
19
65
72
40
20
211
276
219
280
281
282
283
284
265
286
287
288
289
290
291
292
293
294
295
296
291
298
299
300
301
302
303
304
305
306
,
203-Memory Address Error' ,CR,LF
LINE ERROR
301-Keyboard Error' ,CR,LF
KEYBOARD ERROR
E203
DB
31 20 48
&F 61 12
12 12 6F
E301
DB
32 20 53
E302
DB
,
F3D
DB
'(RESUME
; -----
NMI
6F
302-System Unit Keylock
Is Locked',CR,LF
I KEYBOARD LOCK ON
13 14 65 60 20
6E
79
69
6B
28
45
31
29
69
6C
73
65
52
20
22
00
14
&F
20
&4
45
3D
20
OA
20
63
4C
00
53
20
4B
4S
68
6F
OA
55
22
45
I.
0273
02C3
02C3
02C3 E9 0000 E
=
02C6 20
65
64
79
55
12
33
19
20
13
6E
72
30
62
4F
14
69
6F
33 20 48
bF 61 72
12 20 53
b5 60 20
74 20 45
12 00 OA
02EA 20
65
64
19
55
12
030E 20
52
bF
031E 20
52
6F
032E 20
69
65
12
33
79
20
13
6E
72
34
54
12
30
62
4F
14
69
6F
30
20
00
30
20
00
30
68
45
OA
34
6F
12
65
14
72
31
45
OA
31
45
OA
31
66
12
35
64
72
36
13
20
00
0343 20
69
65
20
64
72
36
13
20
52
30
6B
42
65
20 45
00 OA
0364 31
69
46
65
0379 31
69
46
65
038E 31
69
bE
65
6C
03AC 31
69
45
OA
03eF 31
69
45
OA
37 38 30
73 68 20
61 69 6C
00 OA
37 38 31
73 6B 20
61 69 6C
00 0"
37 38 32
73 68 20
74 72 &F
72 20 46
75 72 &5
37 39 30
73 6B 20
72 72 6F
20
61
20
60
20
00
20
72
4B
72
53
20
45
OA
43
72
11-
ORG
NMI
ORG
INT EQU
=
~Ft~
KEY) ',CR,LF
ENTRY
S
OE2C3H
002C3H
S
"".
NMI_INT_'
E303
DB
,
,----E304
KEY80ARD/SYSTEM ERROR
DB
' 304-Keyboard Or System Unit Error',CR.LF
E401
DB
401-CRT Error',CR,LF
I
VECTOR ON TO MOVED NM I CODE
303-Keyboard Or System Unit Error',CR,LF
KEY80ARD CLOCK HIGH
MONOCHROME
20 43
12 12
E501
DB
Sal-CRT Error',CR,LF
COLOR
20 44
74 14
12 6F
E601
DB
601-Dlskette Error',CR,LF
DISKETTE ERROR
DISKETTE BOOT RECORO I 5 NOT VALID
DB
' 602-0iskette Boot Record Error',CR,LF
32 20 44
65 14 74
6F 6F 74
63 6F 72
72 72 6F
HARD FILE ERROR MESSAGE
DB
'1780-Disk 0 Failure',CR,LF
20 44
30 20
75 72
1 Fs I lure' ,CR,LF
20 44
31 20
15 72
FI181
DB
'1181-olsk
20
43
bC
61
00
20
30
72
44
6F
bC
69
OA
44
20
00
FI782
DB
'1782-01 Bk Contra Iler Fat lure',CR,LF
FI790
DB
'1790-01sk
o
37 39 31 20 44
73 6B 20 31 20
72 72 &F 72 00
FI791
DB
'1791-01 sk
1 Error' ,CR,LF
4F 40 20 20 45
72 6F 12 20 00
F3A
DB
'ROM
Error' ,CR,LF
307
308
309
310
3I I
312
313
314
315
316
0302 52
72
OA
03DF 20
6E
53
20
48
68
5-184
16->23
13
261
262
263
264
265
266
267
268
269
210
211
212
213
214
275
216
06- I 0-85
20
6C
79
55
20
6F
73
6E
65 19
20 00
20 20 55
63 68 20
14 65 60
&9 14 20
bC 6F 63
OA
ORGS
F301
DB
Error
,CR,LF
-Un [ock System Un i t
ROM CHECKSUM
Key lock
,CR,LF
IBM Personal Computer MACRO Assembler
Version 2.00
ORGS ----- Ob/l0/85
COMPATIBILITY MODULE
317
318
319
320
321
322
323
324
325
32.
327
328
329
330
331
332
333
334
335
PAGE
;
I
- - - - - - - -------- - - - - - - -- - - -- - - -- - -------- ---- -- - - -- - - --IN] TI ALI ZE DR I VE CHARACTER I ST I CS
;
;
;
:
FIXED DISK PARAMETER TABLE
-
THE TABLE
+0
+2
+3
+5
+1
+8
+9
+12
+ 14
+ 15
33.
337
338
339
340
341
342
343
344
345
34.
347
348
349
350
351
352
353
354
355
356
357
358
359
3.0
361
3.2
3.3
3.4
3'5
366
367
3.8
3'9
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
38.
387
388
389
390
391
392
393
394
395
39'
397
398
399
400
401
402
403
404
405
406
407
408
409
410
4"
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
1-4
Ob-l0-85
(1
(1
(1
(1
((
(1
WORD~
WORD~
BYTE~
BYTE~
I S COMPOSED OF A BLOCK DEF I NED AS:
-
(3 BYTES ~ (1 WORD~ (1 BYTE 1 (1 BYTE 1 -
0401
WORD~
BYTE ~
MAXIMUM NUMBER OF CYLINDERS
MAX I MUM NUMBER OF HEADS
NOT USED/SEE PC-XT
STARTING WRITE PRECOMPENSATION CYL
NOT USED/SEE PC-XT
CONTROL BYTE
BIT
1 DISABLE RETRIES -ORBIT
b DISABLE RETRIES
BIT
3 MORE THAN 8 HEADS
NOT USED/ SEE PC-XT
LANDING ZONE
NUMBER OF SECTORS I TRACK
RESERVED FOR FUTURE USE
TO DYNAMICALLY DEFINE A SET OF PARAMETERS
BU I LD A TABLE FOR UP TO 15 TYPES AND PLACE
THE CORRESPOND I NG VECTOR I NTO INTERRUPT 41
FOR OR I VE 0 AND INTERRUPT 4b FOR DR I VE 1.
FD_TBl!
DRIVE TYPE 01
0401 0132
0403 04
0404 0000
040b 0080
0408 00
0409 00
040A 00 00 00
04000131
040F
0410 00
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
0411
0413
0414
041b
0418
0419
041A
0410
041F
0420
02b1
04
0000
012C
00
00
00 00 00
02b1
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
0421
0423
0424
042b
0428
0429
042A
0420
042F
0430
02b1
Ob
0000
012C
00
00
00 00 00
02b1
0431
0433
0434
043b
0438
0439
Q43A
0430
043F
0440
03AC
08
0000
0200
00
00
00 00 00
03AC
0441
0443
0444
044b
0448
0449
044A
0440
044F
0450
03AC
Ob
0000
0200
00
00
00 00 00
03AC
0451
0453
0454
045b
0458
0459
045A
0450
045F
04bO
02b1
04
0000
FFFF
00
00
00 00 00
02b1
"
030bD
040
0
01280
0
0
0.0.0
03050
170
0
CYLINDERS
HEADS
WRITE PRE-COMPENSATION CYLINDER
CONTROL BYTE
LAND I NG ZONE
SECTORS /TRACK
DR I VE TYPE 02
"
00
Ob150
040
0
03000
0
0
0.0.0
Ob15D
170
0
CYL I NOERS
HEADS
WRITE PRE-COMPENSATION CYLINDER
CONTROL BYTE
LAND I NG ZONE
SECTOR S / TRACK
DRIVE TYPE 03
"
00
O.
Ob150
DB
D.
D.
DB
DB
DB
D.
DB
DB
060
0
03000
0
0
0.0.0
Ob 150
170
0
CYL INDERS
HEADS
WR I TE PRE-COMPENSAT I ON CYL I NDER
CONTROL BYTE
LAND I NG ZONE
SECTORS/TRACK
DR I VE TYPE 04
"
00
D'
DB
D.
D.
DB
DB
DB
D.
DB
DB
09400
080
0
05120
0
0
0.0.0
09400
170
0
CYL I NOERS
HEADS
WRITE PRE-COMPENSATION CYLINDER
CONTROL BYTE
LAND I NG ZONE
SECTORS/TRACK
OR I VE TYPE 05
"
00
D.
DB
D.
D'
DB
DB
DB
D.
DB
DB
09400
0.0
0
05 (20
0
0
0.0.0
09400
170
0
CYL INDERS
HEADS
WRITE PRE-COMPENSATION CYLINDER
CONTROL BYTE
LAND I NG ZONE
SECTORS /TRACK
OR I VE TYPE Db
"
00
D.
DB
D.
D.
DB
DB
DB
D.
DB
OS
Ob150
040
0
OFFFFH
0
0
0.0.0
Ob150
170
0
CYLINDERS
HEADS
NO WRITE PRE-COMPENSATION
CONTROL BYTE
LAND I NG ZQNE
SECTOR S I TRACK
DR I VE TYPE 01
04bl DICE
04b3 08
04b4 0000
D.
DB
D.
04b20
080
0
CYL INDERS
HEADS
ORGS
5-185
1-5
IBM Persona I Computer MACRO Ass.mb ler
Version 2.00
ORGS ----- 06/10/85
COMPATIBILITY MODULE
431
432
433
434
435
43.
431
.38
.3.
440
441
442
.43
44'
•• 5
4 ••
441
•• 8
44.
'50
.51
'52
453
45.
.55
45.
451
'58
.5.
•• 0
.....,
..•••••••••,
.,.
.,,
•• 2
0466
0468
0469
046A
0460
046F'
0470
0100
00
00
00 00 00
011'"F'
II
00
0471
0473
0474
0476
0476
0479
047A
0470
047F
0480
0200
05
0000
F'FFF
00
00
00 00 00
0200
II
00
0461
0483
0464
0466
0466
0489
048A
0480
048F
0490
0364
OF
0000
F'FF'F'
00
08
00 00 00
0385
II
00
OW
DB
DB
DB
OW
DB
DB
;-----
•• 8
.14
"5
..,
"2
•• 3
•• 4
"5
•••
'"
•• 8
4 ••
500
501
502
503
504
505
50.
501
508
50.
510
511
512
513
514
515
51.
SIT
518
51.
520
521
522
523
52.
525
52.
521
528
52'
530
531
532
533
53.
535
53.
531
538
53'
5'0
5"
5.2
5.3
5 ••
; CONTROL BYTE
LAND I NG ZONE
SECTORS / TRACK
ITO
0
07330
CYLINDERS
HEADS
050
0
OFFFFH
NO WRITE PRE-COMPENSATION
0
0
I
0,0,0
07330
CONTROL BYTE
; LAND I NG ZONE
; SECTORS / TRACK
ITO
0
09000
CYLINDERS
HEADS
150
0
OFFFFH
; NO WRITE PRE-COMPENSATION
0
008H
0,0,0
09010
CONTROL BYTE
LAND I NG ZONE
SECTORS / TRACK
ITO
0
DRIVE TYPE 10
0491
0493
0494
0496
0498
0499
049A
049D
049F
04AO
0334
03
0000
FFFF
00
00
00 00 00
0334
II
00
04Al
04A3
04A4
04A6
04A8
04A9
04AA
04AO
04AF
04BO
0357
05
0000
FFFF
00
00
00 00 00
0357
II
00
0481
04B3
04B4
0486
04B8
04B9
04BA
04BO
04BF
04CO
0357
07
0000
FFFF
00
00
00 00 00
0357
II
00
04Cl
04C3
04C4
04C6
04C8
04C9
04CA
04CO
04CF
0400
0132
08
0000
0080
00
00
00 00 00
013F
II
00
0401
0403
0404
0406
0408
0409
04DA
0400
0401'"
04EO
0200
07
0000
F'FFF
00
00
00 00 00
0200
II
00
04El
04E3
04E4
04E6
04E8
04E9
04EA
04EO
04EF
04FO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
• 11
.,8
.80
.81
.82
.83
.8.
.85
.8.
.81
'88
'8'
•• 0
; WRITE PRE-COMPENSATION CYLINDER
0
0
DRIVE TYPE 09
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
'.5
.,0
.11
.,2
'13
02560
0,0,0
05110
DRIVE TYPE 08
OW
DB
OW
OW
DB
DB
DB
OW
DB
;-----
06-10-85
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
;-----
5-186
ORGS
,
CONTROL BYTE
LAND I NG ZONE
SECTORS / TRACK
ITO
0
08550
CYLINDERS
HEADS
050
0
OFFFFH
NO WRITE PRE-COMPENSATION
0
0
CONTROL BYTE
0,0,0
08550
LAND I NG ZONE
SECTORS / TRACK
ITO
0
08550
CYLINDERS
HEADS
010
0
OFFFFH
NO WRITE PRE-COMPENSATION
0
0
CONTROL BYTE
0,0,0
08550
LANDING ZONE
SECTORS/TRACK
ITO
0
03060
CYLINDERS
HEADS
080
0
WRITE PRE-COMPENSATION CYLINDER
01280
0
0
I CONTROL BYTE
0,0,0
03190
LAND I NG ZONE
SECTORS / TRACK
ITO
0
07330
CYLINDERS
HEADS
010
0
OF'F'F'FH
NO WRITE PRE-COMPENSATION
0
0
; CONTROL BYTE
0,0,0
07330
LAND I NG ZONE
SECTORS/TRACK
ITO
0
DRIVE TYPE 15
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
;-----
0
0
0,0,0
08200
DR I VE TYPE 14
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
;-----
; NO WRITE PRE-COMPENSATION
DRIVE TYPE 13
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
;-----
OFFFFH
DRIVE TYPE 12
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
;-----
CYLINDERS
HEADS
030
0
DRIVE TYPE II
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
;-----
08200
00000
000
0
00000
0
0
0,0,0
00000
000
0
DR IVE TYPE I.
RESERVED
....
DO NOT USE····
CYLINDERS
HEADS
WRITE PRE-COMPENSATION CYLINDER
; CONTROL BYTE
LAND I NG ZONE
SECTORS / TRACK
Vers i on 2.00
IB" Persona I Computer MACRO Assemb I er
06/10/85
COMPATIBILITY MODULE
ORGS
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
65.
655
656
657
658
1-6
06-[ 0-85
-~---
04Fl
0264
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
04F3 04
04F4 0000
04F6 0000
04F8 00
04F9
00
04FA 00 00 00
04FD 0297
04FF II
0500 00
06120
040
0
00000
0
0
0,0.
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
0504 DODO
0506 o 12C
0508 00
0509 00
050A 00 00 00
0500 0301
050F II
0510 00
03D I
0513
0514
0516
0518
07
0000
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
FFFF
00
00
051A 00 00 00
05\9
0510 0301
051F II
0520 00
0400
07
0531
0533
0534
0536
0538
0539
053A
0530
053F
0540
0200
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
0000
0200
00
00
00 00 00
03FF
II
00
SECTOR 5 I TR ACK
17
CYL [NDERS
09710
050
HEADS
a
03000
0
0
0,0.0
WRITE PRE-COMPENSATION CYL
CONTROL BYTE
09770
LAND 1 NG ZONE
170
0
SECTORS/TRACK
18
09710
070
0
CYL I NDERS
HEADS
OFFFFH
NO WRITE PRE-COMPENSA T [ON
0
a
CONTROL BYTE
0.0,0
09770
170
LAND 1 NG ZONE
SECTORS I TRACK
a
DR I VE TYPE
0521
0523
0524
0526
0528
0529
052A
0520
052F
0530
LAND ING ZONE
a
DR I VE TYPE
0511
WR I TE PRE-COMPENSATION ALL CYL [NDER
CONTROL BYTE
a
06630
170
DR I VE TYPE
0501 030 I
0503 05
CYLINDERS
HEADS
19
10240
CYLI NOERS
HEADS
070
a
05120
WRITE PRE-COMPENSATION CYL I NDER
a
a
CONTROL BYTE
0,0,0
10230
LAND I NG ZONE
SECTORS / TRACK
170
0
DR I VE TYPE 20
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
05
0000
o 12C
00
00
00 00 00
020C
II
00
07330
CYLI NOERS
HEADS
050
a
03000
WRITE PRE-COMPENSATION CYL
0
0
CONTROL BYTE
0,0,0
0132D
LAND I NG ZONE
SECTORSITRACK
110
a
DR I VE TYPE 21
0541
0543
0544
0546
0548
0549
054A
0540
054F
0550
02DO
0551
0553
0554
0556
0558
0559
055A
0550
055F
0560
0200
0561
0563
0564
0566
0568
0569
056A
0560
056F
0510
0132
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
07
0000
o 12C
00
00
00 00 00
020C
II
00
01330
CYLI NDERS
HEADS
070
a
03000
WRITE PRE-COMPENSATION CYL
a
a
CONTROL BYTE
0,0,0
01320
LAND I NG ZONE
SECTORS/TRACK
170
a
DRIVE TYPE 22
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
05
0000
o 12C
00
00
00 00 00
0200
II
00
; -----
A.
0000
0000
00
00
00 00 00
0150
II
00
01330
03000
0000
00
0000
0000
00
00
00 00 00
0000
00
00
WR ITE PRE-COMPENSAT I ON CYL
a
a
CONTROL BYTE
0,0,0
07330
LAND I NG ZONE
SECTORS / TRACK
170
a
DR I VE TYPE 23
D.
DB
D.
D.
DB
DB
DB
OW
DB
DB
03060
D.
DB
D.
D.
DB
DB
DB
D.
DB
DB
CYLINDERS
HEADS
040
a
00000
a
a
WRITE PRE-COMPENSA T I ON ALL CYL
CONTROL BYTE
0, 0,0
03360
LANDING ZONE
SECTORS / TRACK
170
a
DR I VE TYPE 24
0511
0513
0514
0516
0578
0579
051A
0570
051F
0580
CYLI NDERS
HEADS
050
a
00000
000
0
00000
a
a
0,0,0
00000
000
a
...
RESERVED···
CYLINDERS
HEADS
WRITE PRE-COMPENSAT [ON eYL
CONTROL BYTE
LANDING ZONE
SECTORS/TRACK
ORGS
5-187
1-7
IBM Persqnal Computer MACRO Assemble,.
Version 2.00
ORGS ----- ObI 1 0165
COMPATIBILITY MODULE
650
6.0
661
662
•• 3
.6.
6.5
6&6
667
6.8
•• 0
.70
671
672
673
67.
675
.7.
.77
.7.
670
680
681
682
.83
68.
685
686
687
688
680
.00
.01
602
.03
60.
605
60.
.07
608
600
700
701
702
703
70.
705
70.
707
708
700
710
711
712
713
71.
715
716
717
718
710
720
721
722
723
72.
725
726
727
728
720
730
731
732
733
73'
735
736
737
738
730
740
741
7'2
743
74.
7'5
746
7.7
7'8
740
750
751
752
753
754
755
756
757
758
750
760
7.,
762
763
764
765
766
767
7.8
760
770
771
772
; ----0561
0563
0564
0566
0588
0589
058A
0580
058F
0590
0000
00
0000
0000
00
00
00 00 00
0000
00
00
0591
0593
0594
0596
0598
0599
OS9A
0590
059F
05AO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
05Al
OSA3
05A4
05A6
05A8
05A9
05AA
05AD
05AF
05BO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
0581
0583
0584
0586
05B8
0589
058A
0580
05BF
05CO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
aSCI
OSC3
05C4
05C6
05C6
05C9
05CA
05CD
05CF
0500
0000
00
0000
0000
00
00
00 00 00
0000
00
00
0501
0503
0504
0506
0508
0509
050A
0500
05DF
05EO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
05El
05E3
OSE4
05E6
05E8
05E9
05EA
05EO
05EF
05FO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
05Fl
05F3
05F4
05F6
OSF'6
OSF9
05FA
05FD
05FF
0600
0000
00
0000
0000
00
00
00 00 00
0000
00
00
0601
0603
0604
0606
Ob06
0609
060A
0000
00
0000
0000
00
00
00 00 00
OW
08
g:
08
08
08
;-----
OR I VE TYPE 27
00000
DB
DOD
0
-----
OR I VE TYPE 28
OW
00000
08
ODD
0
ODD
0
DR I VE TYPE 29
ow
00000
08
DOD
0
;
-----
WRITE PRE-COMPENSATION CYL
CONTROL 8YTE
LANDING ZONE
SECTORS ITRACK
••• RESERVED-"
CYL INOERS
HEADS
00000
WRITE PRE-COMPENSATION CYL
0
CONTROL BYTE
a
Ow
0, 0,0
00000
08
08
ODD
0
OR I VE TYPE 30
LAND I NG ZONE
SECTORS/TRACK
. . , RESERVED'"
00000
CYL I NoERS
HEADS
ODD
0
00000
WRITE PRE-COMPENSATION CYL
0
0
Ow
0, a ,a
00000
08
08
ODD
0
DRIVE TYPE 31
OW
00000
08
ODD
0
CONTROL BYTE
LAND I NG ZONE
SECTORS/TRACK
•• ,
RESERVED'"
CYLINDERS
HEADS
00000
WRITE PRE-COMPENSATION CYL
0
0
Ow
a ,a ,a
00000
08
DB
0
;
OW
00000
08
ODD
0
••• RESERVED'·'
CYI.... INOERS
HEADS
00000
WR I TE PRE-COMPENSAT I ON CYL
0
0
OW
0, a ,a
00000
08
08
ODD
0
DR I VE TYPE 33
OW
00000
08
ODD
0
CONTROL BYTE
LAND I NG ZONE
SECTORS/TRACK
ODD
DRIVE TYPE 32
08
08
08
CYL INDERS
HEADS
0
0, 0,0
00000
Ow
OW
••• RESERVED"·
a
OW
08
08
08
LANDING ZONE
SECTORS/TRACK
00000
08
08
OW
ow
; -----
WR I TE PRE-COMPENSAT I ON CYL
000
0
DB
08
08
CYL I NoERS
HEADS
CONTROL BYTE
OW
08
••• RESERVEO'"
0
0
08
08
ow
ow
LAND I NG ZONE
SECTORS /TRACK
00000
0,0,0
00000
OW
;
CONTROL BYTE
OW
08
08
08
-----
WR ITE PRE-COMPENSATiON CYL
0
0
ODD
0
ow
ow
CYLINDERS
HEADS
ODD
0
08
08
08
08
08
••• RESERVED'"
00000
OW
OW
OW
LANDING ZONE
SECTORS / TRACK
00000
0,0,0
00000
08
08
DB
;
ORGS
DR I VE TYPE 26
Ow
Ow
; -----
CONTROL BYTE
ODD
0
08
08
08
; -----
WRITE PRE-COMPENSATiON CYL
0
0
OW
ow
OW
CYLINDERS
HEADS
ODD
0
00000
08
08
08
••• RESERVEO'"
00000
0,0,0
00000
ow
;-----
5-188
DRIVE TYPE 25
06-10-65
1 CONTROL BYTE
LANDING ZONE
SECTORS ITRACK
. , ' RESERVED'"
CYLINDERS
HEADS
OW
OW
00000
WRITE PRE-COMPENSATION CYL
08
08
08
0
0
CONTROL BYTE
0, 0,0
IBM Persona I Computer MACRO Assembler
Vers
ORGS
06/10/85
COMPATIBILITY MODULE
-----
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
OW
DB
DB
0600 0000
060F 00
06 \ 0 00
I 00
06-10-85
00000
DOD
0
DR I VE TYPE 34
0611
06 t 3
06 \ 4
0616
0618
0619
06\A
061 D
061 F
0620
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
0000
00
0000
0000
00
00
00 00 00
0000
00
00
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
0000
00
0000
0000
00
00
00 00 00
0000
00
00
; -0631
0633
0634
0636
0638
0639
063A
0630
063F
0640
0000
00
000
0
00000
0
0
0,0,0
00000
DOD
0
0000
0000
00
00
00 00 00
0000
00
00
OW
OW
DB
DB
DB
OW
DB
DB
0000
00
0000
0000
00
00
00 00 00
0000
00
00
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
0000
00
0000
0000
00
00
00 00 00
0000
00
00
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
0000
00
0000
0000
00
00
00 00 00
0000
00
00
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
0673
0674
0676
0678
0679
067A
0670
067F
0680
00
0000
0000
00
00
00 00 00
0000
00
00
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
CYLI NOERS
HEADS
WR I TE PRE-COMPENSAT I ON CYL
CONTROL BYTE
ODD
0
...
0000
0691
0693
0694
0696
0000
00
0000
0000
00
00
00 00 00
0000
00
00
OW
DB
OW
OW
DB
DB
DB
OW
DB
DB
0000
0000
OW
DB
OW
OW
RESERVEO-· •
CYLINDERS
HEADS
ODD
0
WR I TE PRE-COMPENSAT I ON CYL
00000
0
0
CONTROL BYTE
0,0,0
00000
ODD
0
...
LAND I NG ZONE
SECTORS / TRACK
RESERVED·· -
00000
CYL I NDERS
HEADS
ODD
0
00000
WR I TE PRE-COMPENSATI ON CYL
0
0
CONTROL BYTE
0,0,0
00000
000
0
...
LANDI NG ZONE
SECTORS/TRACK
RESERVEO-- CYL INOERS
HEADS
00000
000
0
00000
WRITE PRE-COMPENSATION CYL
0
0
CONTROL BYTE
0,0,0
00000
000
0
...
LAND ING ZONE
SECTORS/TRACK
RESERVEo-· -
00000
CYLINDERS
HEADS
000
0
WRITE PRE-COMPENSATION CYL
00000
0
0
CONTROL BYTE
0,0,0
00000
000
0
...
LAND ING ZONE
SECTORS/TRACK
RESERVEO---
00000
CYLI NOERS
HEADS
000
0
00000
WRITE PRE-COMPENSATION CYL
0
0
CONTROL BYTE
0,0,0
00000
LAND I NG ZONE
SECTORS/TRACK
000
0
RESERVEO-·-
00000
CYL INOERS
HEADS
DOD
0
00000
WR I TE PRE-COMPENSAT I ON CYL
0
0
CONTROL BYTE
0,0, a
00000
000
0
DR IVE TYPE 42
00
LAND I NG ZONE
SECTORS/TRACK
00000
DRIVE TYPE 41
0681
0683
0684
0686
0688
0689
068A
0680
068F
0690
RESERVEO---
0
0
DR I VE TYPE 40
0000
...
LAND I NG ZONE
SECTORS / TRACK
0,0,0
00000
DR I VE TYPE 39
0661
0663
0664
0666
0668
0669
066A
0660
066F
0670
WR I TE PRE-COMPENSATI ON CYL
CONTROL BYTE
00000
DR I VE TYPE 38
0651
0653
0654
0656
0658
0659
065A
0650
065F
0660
CYLINDERS
HEADS
ODD
0
DR [VE TYPE 37
0641
0643
0644
0646
0648
0649
064A
0640
064F
0650
RESERVEO---
00000
DR I VE TYPE 36
OW
DB
...
LAND ING ZONE
SECTORS / TRACK
00000
DR I VE TYPE 35
062 \
0623
0624
0626
0628
0629
062A
0620
062F
0630
1-8
2.00
00000
ODD
0
00000
...
LANDING ZONE
SECTORS I TRACK
RESERVED·· •
CYLI NDERS
HEADS
WR ITE PRE-COMPENSATI ON CYL
ORGS
5-189
1-9
IBM Peraonal Computer MACRO Assembler
Veraion 2.00
ORGS ----- 06/10/85
COMPATIBILITY MODULE
•• 7
888
889
890
.91
892
89'
89.
895
.9.
897
898
899
900
901
902
903
90.
905
90.
907
908
909
910
911
912
913
91.
915
91.
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
9.2
933
934
935
935
937
938
939
940
941
942
943
944
945
9.5
947
948
949
950
951
952
953
95.
955
955
957
958
959
950
961
962
953
954
965
955
957
958
969
970
971
972
973
974
975
975
0698
0699
069A
0690
069F
061.0
00
00
00 00 00
0000
00
00
DB
DB
;----06A I
06A3
06A4
061.6
06A8
06A9
061.1.
06AO
06AF
06BO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
06BI
06B3
0684
0686
0688
0689
06BA
068D
068F
06CO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
06CI
06C3
06C4
06C6
06C8
06C9
06CA
06CD
06CF
0600
0000
00
0000
0000
00
00
00 00 00
0000
00
00
0601
0603
06D4
0606
0608
06D9
06DA
0600
06DF
06EO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
06EI
06E3
06E4
06E6
0&E8
06E9
06EA
06ED
06EF
06FO
0000
00
0000
0000
00
00
00 00 00
0000
00
00
CONTROL BYTE
08
OW
DB
0,0,0
00000
000
DB
0
DRIVE TYPE 43
OW
DB
OW
OW
CONTROL BYTE
DB
LAND I NG ZONE
SECTORS /TRACK
DB
0
ow
D8
DB
DB
OW
ow
LAND I NG ZONE
SECTORS /TRACK
••• RESERVED···
00000
000
CYL INDERS
HEADS
0
00000
WR I TE PRE-COMPENSATI ON CYL
0
0
CONTROL BYTE
08
LAND I NG ZONE
SECTORS/TRACK
DB
0
DRIVE TYPE 46
ow
ow
••• RESERVEO···
OOOOD
OOD
CYL INDERS
HEADS
0
00000
WR I TE PRE-COMPENSATI ON CYL
DB
DB
0
0
CONTROL BYTE
DB
DB
0,0,0
00000
OOD
LAND I NG ZONE
SECTORS/TRACK
DB
0
ow
DRIVE TYPE 47
DW
08
OW
00000
OOD
DW
DB
DB
00000
DB
ow
DB
DB
RESERVED· ••
0
0,0,0
00000
000
0
ORG
06F5
06F5
06F7
06FS
06F9
06FA
CONF TBL:
OW
DB
DB
DB
DB
989
990
991
992
993
994
995
995
997
998
999
1000
=
CONF _E
= 06FF
IF
CONF E-CONF TBL-2
MODEL BYTE SUB MODEL BYTE
BIOS LEVEL
OIIIOOOOB
5-190
ORGS
VECTOR ON TO MOVED BOOT CODE
AH= OCOH
USE INT 15 H
CONFIGURATION TABLE FOR THIS SYSTEM
LENGTH OF FOLLOW I NG TABLE
SYSTEM MODEL BYTE
SYSTEM SUB MODEL TYPE BYTE
BIOS REVISION LEVEL
10000000 " OMA CHANNEL 3 USE BY BIOS
01000000 = CASCADED INTERRUPT LEVEL 2
00100000
REAL TIME CLOCK AVAILABLE
00010000
KEYBOARD SCAN CODE HOOK 1AH
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED FOR EX PANS I ON
=
=
DB
DB
DB
DB
0417
0300
0180
OOCO
0060
0030
0018
OOOC
LANDING ZONE
SECTORS/TRACK
INTERRUPT
OE6F2H
006F2H
EQU
•
BOOT_STRAP _,
EQU
BAUD RATE
0729
0729
0128
0720
072F
0731
0733
0735
0737
CONTROL BYTE
S
DRG
06F8 00
06FC 00
06FD 00
06FE 00
06FF
WR I TE PRE-COMPENSAT I ON CYL
0
977
978
979
980
981
982
983
98.
985
985
987
988
CYL INDERS
HEADS
0
BOOT LOADER
BOOT STRAP
,JMP
a
CONTROL BYTE
0,0,0
00000
OOD
=
0008
FC
00
I
70
WR I TE PRE-CONPENSATI ON CYL
I
DB
DB
OW
1106F2
06F2
06F2 E9 0000 E
CYLINDERS
HEADS
0
OOOOD
0
0
0,0,0
00000
000
0
DB
DB
ow
'F
• •• RESERVEO···
00000
000
DRIVE TYPE 45
ow
;-----
WR I TE PRE-COMPENSATI ON CYL
0
0
0,0,0
00000
000
08
;-----
CYLINDERS
HEADS
08
OW
DB
DB
;-----
• •• RESERVED···
DB
DB
DW
08
OW
DW
j-----
LANDING ZONE
SECTORS/TRACK
00000
000
0
00000
OR I VE TYPE 44
= O&FI
Ob-10-85
INITIALIZATION TABLE
S
; 1-
DRG
DRG
AI
OW
OW
OW
OW
OW
OW
OW
OW
j-----
RS232
; ;-
DRG
OE729H
00729H
1047
..,
758
192
95
4.
2'
12
OE739H
110 BAUD
150
300
600
1200
2400
4800
9600
TABLE OF VALUES
FOR INITIALIZATION
IBM Personal Cornputer MACRO Assernbler
Version 2.00
ORGS ----- 06110/B5
COMPATI81L1TY MODULE
1001 0739
1002 = 0739
1003 0739 E9 0000 E
1004
1005
1006
1007
1008 082E
1009 = 082E
1010 082E E9 0000 E
1011
1012
1013
1014
1015087E
1016 087E 52
1017 087F 3A 45 46 38 10
10 \ 8 0884 2A 36
1019 = 0008
1020
1021
1022
1023 0886 80
102408874020 100804
1025 088C 02 0 I
1026
1027
1028
1029 088E 18 FF 00 FF FF FF
1030
IE FF FF FF FF IF
1031 089A FF 7F FF I 1 17 05
1032
12 14 I'll 1509 OF
1033 08A6 10 I BID OA FF 0 I
1034
13 04 06 07 08 OA
1035 0882 OB OC F'F FF FF FF
1036
lC IA 1803 1602
1037 088E OE 00 FF FF FF 1"1"
1038
FF FF 20 FF
1039
1040
1041 08Ce 5E SF 60 6 I 62 63
1042
64 65 66 67 FF F'F
1043 0804 77 FF 84 FF 73 FF
1044
74 FF 75 FF 761"1"
1 045 08EO 1"1"
1046
1047
1048
1049 06E 1 18 31 32 33 34 35
1050
3637 38 39 30 20
1051
3D 08 09
1052061"0 71 77 65 72 74 79
1053
75 69 61" 70 58 50
1054
00 FF 61 736466
1055
67 68 6A 68 6C 38
1056
27
1057 0909 60 1"1" 5C 7A 78 63
1058
7662 6E 60 2C 2E
1059
2F FF 2A FF 20
1060 091A FF
1061
1062
1063
t 064 09, 8 18 21 40 23 24 25
1065
SE 26 2A 28 29 SF
1066
280800
1067 092A 51 57 45 52 54 59
1068
55 49 41" 50 78 7D
1069
00 FF 41 534446
1070
47 48 4A 48 4C 3A
1071
22
1072 0943 7E 1"1" 1C SA 58 43
1073
56 42 4E 40 3C 3E
1074
31" 1"1" 00 FF 20 1"1"
1075
1076
1077 0955 54 55 56 57 58 59
1076 0958 5A 58 5C 50
1079
lOBO
1081 095F 68 69 6A 68 6C
1082 0964 60 6E 61" 70 7 I
1083
1084
1085
1086 0969 37 38 39 20 34 35
1067
362831 323330
1088
2E
1089
1090
1091 0976474849 FF 4B 1"1"
1092 097C 40 1"1" 4F 50 51 52
1093
53
1094
1095
1096
1091
10980987
1099 = 0987
1100 0987 E9 0000 E
ORO
RS232
10
-
JMP
; -----
KEY80ARO
;;-
ORG
ORO
10
'JMP
KEYBOARD
1-10
06-10-85
00739H
EQU
•
RS232_10_'
VECTOR ON TO MOVED RS232 CODE
OE82EH
0082EH
EQU
•
KEYBOARD_I 0_'
;
VECTOR ON TO MOVED KEY80ARD CODE
TA8LE OF SHIFT KEYS AND MASK VALUES
(EARLY PCI
;;-
ORO
ORO
K6
DB
DB
DB
EOU
OE87EH
0087EH
INS KEY
; I NSERT KEY
CAPS KEY,NUM KEY,SCROLL KEY,ALT KEY,CTL KEY
LEFT-KEY, RIGHT KEY
'-K6-
DB
DB
DB
INS SHIFT
; INSERT MODE SHIFT
CAPS SH I FT ,NUM SH I FT , SCROLL SH I FT ,AL T SH I FT , CTL SH I FT
LEFT:::SHIFT.RIGHT_SHIFT
-
K6L
K7
;-----
SCAN CODE TABLES
K8
DB
27,-1.0,-1.-1,-1.30,-1,-1.-1,-1,31
DB
-1,127.-1,17.23.5.18.20.25.21.9.15
DB
16,27,29.10.-1,1,19,4,6,7,8,10
DB
11.12,-1.-1.-1,-1,28.26,24.3.22.2
DB
14,13.-1.-1,-1.-1,-1,-1,'
;-----
CTL TABLE SCAN
K9
DB
',-I
94.95.96,97,98,99.100.101.102.103.-1.-1
08
1 19, -1 , 132, -1 , I 15, - I • I 16, - 1 , I 11. - I • I 18.-1
DB
-I
;-----
LC TA8LE
K 10
DB
o18H •• 1234567890-=' • 08H. 09H
DB
• qwertyu i QP[]' ,DOH. -I,' a$dfgh j k 1;'. 027H
08
60H,-1,5CH, 'zKovbnm, . " . - 1 , ···.-1.·
08
-I
; -----
UC TABLE
Kl1
DB
21.' ! .#",37 .05EH.' , . () _ +'. 08H. 0
08
'QWERTYU I OP t
08
07EH,-I. 'lZXCVBNM<>?' ,-1,0,-1,'
t •• OOH, -1
;-----
UC TABLE SCAN
KI2
08
84,85.66.87.88,69
DB
90,91,92.93
AL T T ABLE SCAN
K13
DB
DB
;-----
NUM STATE TABLE
K 14
DB
, • ASOFGHJKL: ~ ,
'.-1
104.105,106,107,108
109. 1 10. 1 1 I • 1 12. 1 13
• 789-456+ 1230.'
BASE CASE TABLE
K15
DB
DB
; -----
KEY80ARO
;;-
ORG
ORG
EQU
S
"MP
KB_INT_l
KB_INT
71,72.73,-1.75,-1
77,-1,79,80,81.82,83
INTERRUPT
OE987H
00987H
VECTOR ON TO MOVED KEYBOARD HANDLER
ORGS
5-191
IBM Personal Computer MACRO Assembler
Version 2.00
ORGS ----- 06/[0/85
COMPATIBILITY MODULE
101
102
103
10.
[05 OC59
[06 = OC59
[01 OC59 E9 0000 E
108
10'
110
III
1120F51
[ [3 = OF51
[[4 OF51 E9 0000 E
115
116
117
118
PAGE
;-----
DISKETTE
;;-
ORG
D]SKETTE
[0
JMP
;-----
DISKETTE
; 1-
ORG
JMP
1-----
DISKETTE PARAMETERS
; j-
ORG
ORG
119 OFC1
120
121
122
123
12.
125
126
127
128
.- ------- --; 01 SK BASE
;
-
OEFC7H
OOFC7H
-- - ---- - - ----------- ---- -- -- -------- - ----------- - --
DISK_BASE
D8
08
D8
D8
D8
08
D8
D8
D8
D8
D8
LABEL
15
OTL
GAP LENGTH FOR FORMAT
FILL BYTE FOR FORMAT
HEAD SETTLE T I ME (M I LL I SECONDS I
MOTOR START TIME (1/8 SECONDS I
15
8
[/0
;;-
ORG
OEFD2H
00FD2H
EQU
I
PRINTER_IO_I
10
- JMP
SRT=D, HD UNLOAD=OF - 1ST SPECIFY BYTE
HD LOAD= I, MODE=DMA - 2ND SPEC] FY BYTE
WA[T TIME AFTER OPERAT]ON TILL MOTOR OFF
512 BYTES / SECTOR
EOT ( LAST SECTOR ON TRACK I
GAP LENGTH
OIBH
OFFH
054H
OF6H
PRINTER
DRG
REQUIRED FOR
PO I NTED AT BY THE
TO MOD[FY THE PARAMETERS,
AND POINT AT ]T
BYTE
11 O[ 111 18
2
MOTOR WA I T
2
-
;-----
PRINTER
VECTOR ON TO MOVED D [SKETTE HANDLER
THIS IS THE SET OF PARAMETERS
0] SKETTE OPERAT I ON.
THEY ARE
DATA VARIABLE @DISK POINTER.
BUILD ANOTHER PARAMETER BLOCK
;
;
;
1 [29 OFC1
I 130
1131 OFC1 OF
[132 OFC8 02
1133 OFC9 25
1134 OFCA 02
1135 OFCB OF
1[360FCe [B
I 131 OFCD FF
1138 OFCE 54
1139 OFCF F6
1140 OFDO OF
1141 OFDI 08
1142
[ [43
1144
1[45
1[46 OFD2
1141 = OFD2
1148 OFD2 E9 0000 E
[ [49
[ [50
I IS [
[ [52
[1531045
1154
1[55
[ 156
1151
1[58
[ [59
1160
1[61
1162
1163
1164
1165
1 [66
1161
1168
1169
1110
1111
1172
1173 1045 0000 E
1174 1047 0000 E
1175 1049 0000 E
1116 [048 0000 E
1177 1040 0000 E
1178 104F 0000 E
1119 1051 0000 E
1180 1053 0000 E
118[ 1055 0000 E
1182 1051 0000 E
1183 [059 0000 E
1184 105B 0000 £
1185 1050 0000 E
1186 105F 0000 E
1187 1061 0000 E
1188 1063 0000 E
1189 ::: 0020
1190
1191
1192 1065
1193 = lObS
1194 1065 £9 0000 E
1195
1 196
VECTOR ON TO MOVED 0 I SKETTE CODE
INTERRUPT
OEF57H
00F51H
EQU
S
DISK_I NT_I
ORG
INT
-
I/O
OEC59H
OOC59H
EQU
S
DISKETTE_la_I
ORG
01 SK
1-11
06-10-85
;
VECTOR ON TO MOVED PR [NTER CODE
;-----
FOR POSSIBLE COMPATIBILITY ENTRY POINTS
;;-
ORG
ORG
ASSUME
OF045H
01045H
CS:CODE,OS:DATA
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
SET MODE: NEAR
SET-CTYPE: NEAR
SET-CPOS: NEAR
REAO CURSOR:NEAR
REAO-LPEN: NEAR
ACT OISP PAGE:NEAR
SCROLL UP: NEAR
SCROLL-DOWN: NEAR
READ AC CURRENT: NEAR
WR I TE AC CURRENT: NEAR
WR I TE-C CURRENT: NEAR
SET COLOR: NEAR
WRITE DOT:NEAR
READ DOT: NEAR
WR I TE TTY: NEAR
VIDEO::::STATE:NEAR
ow
ow
ow
ow
ow
ow
ow
ow
ow
ow
ow
ow
ow
ow
ow
ow
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
S-MI
"'L
EQU
11-
ORG
ORG
VIDEO_IO
JMF
SET MODE
SET~CTYPE
SET-CPOS
READ CURSOR
REAO-LPEN
ACT OISP PAGE
SCROLL UP
SCROLL-DOWN
READ AC CURRENT
WR I TE AC CURRENT
WR I TE-C CURRENT
SET COLOR
WR I TE DOT
READ OOT
WR I TE TTY
VIDEO::)TATE
OF065H
01065H
EQU
S
VIOEO_IO_1
VIDEO PARAMETERS ---
TABLE OF ROUTINES W[TH[N VIDEO [/0
EXIT STACK VALUES MAY 8E
DIFFERENT DEPEND I NG ON THE
SYSTEM AND MODEL
VECTOR ON TO MOVED V IDEO CODE
[NIT_TABLE
1197
1198
1199
1200
120 I
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
12 [3
1214
I; [OA4
10A4
10A4 38 28 20 OA IF 06
19
10AB lC 02 07 06 07
lOBO 00 00 00 00
= 0010
ORG
ORG
V IDEO PARMS
D8
M.
DB
DB
EQU
OFOA4H
010A4H
LABEL
BYTE
38H,28H,2DH,OAH,IFH,6,19H
IOB4 7 I 50 SA OA IF 06
19
10BB lC 02 07 06 01
lOCO 00 00 00 00
DB
7 [H, SOH, 5AH. OAH, 1FH, 6, 19H
DB
DB
tCH,2,7,6,7
0,0,0,0
IOC4 38 28 20 OA 7F 06
64
DB
38H, 28H ,2DH, OAH, 7FH, 6, 64H
5-192
ORGS
SET UP FOR 40X25
lCH,2,7.6.7
0,0,0.0
I-VIDEO_PARMS
SiT UP FOR BOX25
SET UP FOR GRAPH I CS
1-12
06-10-85
IBM Personal Computer MACRO Assembler
Vers ion 2.00
ORGS ----- 06/10/85
COMPATIBILITY MODULE
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1221
1228
1229
1230
1231
1232
1233
1234
1235
123&
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1266
1269
1270
1271
1272
1273
1274
1275
1276
1277
1218
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1306
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
10CB 70 02 01 0607
1000 00 00 00 00
DB
DB
70H,2,l,6,7
0,0,0,0
10P4 61
DB
61H,50H,52H,OFH,I9H,6,I9H
DB
08
19H,2,OOH,OBH,OCH
0,0,0,0
OW
OW
OW
OW
2048
4096
16384
16384
I.
50 52 OF 19 06
1008 19 02 00 08 OC
10EO 00 00 00 00
10E4 0800
10E6 1000
IOE8 4000
10EA 4000
M5
;
SET UP FOR 80X2S B&W CARD
TABLE OF REGEN LENGTHS
40X25
80X25
GRAPHI CS
COLUMNS
10EC 28 28 50 50 28 28
50 50
IOF4 2C 28 20 29 2A 2E
IE 29
."
.,
; -----
1840
1840
1840 E9 0000 E
2CH,28H,2DH,29H,2AH,2EH,1EH,29H
;;-
ORG
EQUIPMENT
JMP
CASSETTE
ORG
DRG
oaoo
CASSETTE 10
:iMP
E
OF541 H
01541H
EQU
S
MEMORY_SIZE_DET_l
EQU I PMENT DETERM [NE
;;-
;;-
TABLE OF MODE SETS
MEMORY S [ZE
; -----
:-----
lA6E
lA6E
1 A6E 00
00
lA76 7E
81
1 A 7E 7E
FF
1 A86 6C
10
1 A8E 10
10
1 A96 38
38
1 A9E 10
38
1 AA6 00
00
lAAE FF
FF
IAS6 00
3C
1 ABE FF
C3
lAC6 OF
CC
1 ACE 3C
7E
lAD6 3F
FO
1 ADE 7F
E6
IAE6 99
SA
DB
ORG
=
1859
1859
1859 E9
40,40,80,80,40,40,50,80
; ;ORG
ORG
MEMORY S] ZE DET
.JMP-
1841
1841
1841 E9 0000 E
=
=
DB
ORG
VECTOR ON TO MOVED 8 I OS CODE
OF84DH
o I 840H
EQU
•
EQU I PMENT _I
VECTOR ON TO MOVED 8 I
as
CODE
(NO 810S SUPPORT)
OF859H
o 1859H
EQU
S
CASSETTE_IO_I
;
VECTOR ON TO MOVED 810S CODE
OFA6EH
01 A6EH
LABEL
BYTE
OOOH. OOOH. OOOH, OOOH. OOOH, OOOH. OOOH, OOOH
0_00
BLANK
DB
07EI:i, 081 H, OA5H, 081 H. OBDH, 099H, 081 H, 07EH
0_01
SMILING FACE
08 FF C3 E7
DB
07EH, OFFH, 008H, OFFH, OC3H, OE7H, OFFH, 07EH
o_02
SMILING FACE N
FE FE 7C 38
DB
06CH, OFEH, OFEH, OFEH, 07CH, 038H, 0 1 OH, OOOH
0_03
HEART
DRG
00 00 00 00 00
00
81 AS 81 80 99
CRT CHAR GEN
OB
7.E
FF
7E
FE
00
38
00
7C
1C
10
7C
00
00
FF
FF
3C
00
C3
FF
07
78
66
18
33
EO
63
CO
SA
99
IAEE 80 EO
80 00
1 AF6 02 DE
02 00
IAFE 18 3C
3C 18
180& 66 b6
66 00
! 80E 7F DB
IB 00
lB16 3E 63
CC 78
IB1E 00 00
7E OQ
IB26 18 ac
18 FF
182E 18 3C
18 00
1836 18 18
18 00
lB3E 00 18
00 00
1846 00 30
00 00
lB4E 00 00
0000
185& 00 24
00 00
185E 00 18
00 00
lB66 00 FF
00 00
7C FE 7C 38
DB
01 OH, 038H, 07CH, OFEH, 07CHo 038H, 0 1 OH, OOOH
0_04
DIAMOND
38 FE FE 7C
DB
038H, 07CH, 038H. OFEH, OFEH, 07CH, 038H, 07CH
0_05
CLUB
38 1C FE 7C
DB
01 OH, 0 I OH, 038H, 07CH, OFEH, 07CH 0 038H, 07CH
0_06
SPADE
18 3C 3C
18
DB
OOOH, OOOH, 0 18H, 03CH, 03CH, 0 1 8H, OOOH, OOOH
0_o7
BULLET
E7 C3 C3 E7
DB
OFFH. OFFH, OE7H, OC3H, OC3H 0 OE7H, OFFH, OFFH
0_08
BULLET NEG
66 42 42 66
DB
OOOH, 03CH, 066H, 042H, 042H, 066H. 03CH, OOOH
0_09
CIRCLE
99 80 BD 99
DB
OFF!"!, OC3H, 099H, 080H, OBCH, 099H, OC3H, OFFH
C_OA
CIRCLE NEG
OF 70 CC CC
DB
OOFH, 007H, OOFH, 07DH, OCCH, OCCH 0 OCCH, 01 8H
0_08
MALE
66 66 3C
18
DB
03CH, 066H, 066H, 066H, 03CH, 0 1 8H. 07EH. 0 18H
O_OC
FEMALE
3F 30 30 70
DB
03FH, 033H, 03FH, 030H, 030H, 07QH, OFOH, OEOH
0_00
EIGHTH NOTE
7F 63 63 61
DB
07FH, 063H, 07FH, 063H, 063H, 06 7H, OE6H, OCOH
O_OE
TWO 1/16 NOTE
3C E7 E7 3C
DB
099H, 05AH, 03CH, OE7H. OE1H, 93CH, 05AH, 099H
0_ OF
SUN
F8 FE F8 EO
DB
080H, OEOH, OF8H. OFEH. OF8H, OEOH, 080H. OOOH
0_' 0
R ARROWHEAD
3E FE 3E OE
DB
002H,OOEH,03EH,OFEH,03EH,OOEH,002H,OOOH
o_11
L ARROWHEAD
7E
18 18 7E
DB
o 18H, 03CH, 07EH, 0 18H,O 18H, 07EH,03CH, 0 18H
0_12
ARROW 2 VERT
66 66 66 00
DB
066H, 066H, 066H, 066H, 066H, OOOH, 066H, OOOH
o_13
2 EXCLAMATIONS
08 78
pARAGRAPH
1BIB
DB
07FH, OOBH, OOBH, 07BH. 0 I BH, 0 I BH, 0 1BH, OOOH
0_14
38 6C 6C 38
DB
03EH, 063H, 038H, 06CH, 06CH, 038H, OCCH 0 078H
0_15
SECTION
00 00 7E 1E
DB
OOOH, OOOH, OOOH, OOOH, O('EH, 07EH, 07EH, OOOH
0_16
RECTANGLE
7E
0_17
ARROW 2 VRT UP
0_18
ARROW VRT UP
ARROW '(R7 DOWN
18 7E 3C
DB
7E 18 18 18
DB
o 18H, 03CH, 07EH, 0 18H,07EH,03CH,O 18H, OFFH
o 18H, 03CH, 07EH, 0 18H, 0 18H, 0 18H oO 18H, OOOH
18
DB
o 18H, 0 18H,O 18H,
18H, 07EH, 03CH,O 18H,OOOH
o_19
18
DB
OOOH, 0 18H, OOCH, OFEH, OOCH, 0 1'8H. OOOH 0 OOOH
0_1 A
ARROW RIGHT
60 FE 60 30
DB
OOOH, 030H, 060H, OFEH, 060H, 030H, OOOH, OOOH
0_' B
ARROW LEFT
CO CO CO FE
DB
OOOH, OOOH, OCOH, OCOH, OCOH, OFEH, OOOH, OOOH
0_1 C
NOT INVERTED
6b FF 6& 24
DB
OOOH, 024H. 066H, OFFH, 066H, 024H, OOOH, OOOH
0_10
ARROW 2 HQRZ
3C 7E FF FF
DB
OOOH, 0 \ 8H. 03CH, 07EH, OFFH, OFFH. OOOH. OOOH
0_1 E
ARROWHEAD UP
FF 7E 3C 18
DB
OOOH, OFFHo OFFH o07EH, 03CH, 0 18H, OOOH, OOOH
O_'F
ARROWHEAD DOWN
18 7E 3C
OC FE OC
°
ORGS
5-193
IBM Personal Computer MACRO Assembler
Version 2.00
oRGS
06/10/85
COMPATIBILITY MODULE
-----
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1371
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
141 I
1412
1413
1414
1415
1416
1417
141 e
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
t 430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
lB6E 00
00
1816 30
30
1B1E 6C
00
lB86 6e
6e
lS8E 30
30
1896 00
e6
IB9E 38
76
IBA6 60
00
IBAE 18
18
IBB6 60
60
IB8E 00
00
lBC6 00
00
IBCE 00
30
lBD6 00
00
lBDE 00
30
lBE6 06
80
IBEE 7e
7e
18F6 30
Fe
tBFE 78
Fe
tC06 78
78
ICOE Ie
IE
lC16 FC
00 00 00 00
00
78 78 30 30
00
6e 6e 00 00
00
6C FE 6C FE
1 -13
06-10-85
00
DB
OOOH. OOOH I OOOH. OOOH. OOOH. OOOH. OOOH, OOOH
; 0 - 20
00
DB
030H. 018H. 018H, 030H, 030H. OOOH, 030H. OOOH
0_21
00
DB
6e
06CH. 06CH, 06CH, OOOH, OOOH. eOOH. OOOH, OOOH
0 - 22
D6CH I 06CH. OFEH, 06CH. OFEH. OoCH. 06CH, OOOH
0_23
00
7C CO 78 DC F8
DB
030H, 0 7CH, OCOH, 078H. OOCH I OF8H, 030H, OOOH
0
OOOH, OC6H, OCCH, 0 18H. 030H I 066H. OC6H, OOOH
0 - 25 X
PERCENT
DB
038H, 06CH, 038H, 076H, OOCH. OCCH. 0 76H. OOOH
0 - 26
AMPERSAND
DB
060H, 060H, OCOH, OOOH. OOOH I OOOH I OOOH, OOOH
0
60 60 60 30
DB
o 18H I 03DH I 060H, 060H. 060H. 030H. 0 I 8H, OOOH
18
DB
060H, 030H, 0 18H. 0 18H. 0 18H, 030H, 060H, OOOH
18 30
00
"
6e 38 76 DC ee
00
60 CO 00 00 00
00
18 18 30
3C FF 3C
"
- 24
- 27
D 28
-
PARENTHES [S
R.
PARENTHES J S
OOOH, 066H, 03CH. OFFH. 03CH I 066H, OOOH, OOOH
0
OOOH. 030H. 030H. OFCH. 030H, 030H, OOOH. OOOH
0_2B
00 00 00 30
DB
OOOH, OOOH, OOOH. OOOH. OOOH, 030H, 030H. 060H
0
00 Fe 00 00
DB
OOOH. OOOH. OOOH. OFCH. OOOH, OOOH. OOOH. OOOH
0_20
00 00 00 30
DB
OOOH. OOOH. OOOH. OOOH I OOOH, 030H, 030H. OOOH
0
- 2E
18 30 60 co
DB
006H, OOCH, 0 I 8H, 030H. 060H, OCOH, 080H. OOOH
0
2F
e6 eE DE F6 E6
DB
07CH. OC6H. OCEH, ODEH. OF6H. OE6H I 0 7CH. a OOH
0 30
DB
030H. 070H. 030H I 030H I 030H, 030H, OFCH. OOOH
00
00
ASTER [SK
- 2A
PLUS
- 2e
COMMA
-
078H. OCCH, OOCH. 038H, 060H. OCCH, OFCH. OOOH
07 8H. OCCH. OOCH, 038H I OOCH. OCCH, 0 7 8H, OOOH
0_33 3
DB
01 CH. 03CH. 06CH, OCCH, OFEH. OOCH, 0 1EH. OOOH
0
CO F8 oe oe ee
DB
OFCH, OCOH I OF8H, OOCH, OOCH. OCCH. 07 8H, OOOH
o_35 5
78 00
ICIE 38 60 co F8 CC ee
78 00
IC26 FC
30
IC2E 78
78
lC36 78
70
lC3E 00
30
IC46 00
30
IC4E 18
18
1C56 00
00
IC5E 60
SLASH
a
0 31 I
0 32 2
-
DB
ee oe 38 oe ee
DASH
PER (00
I
DB
00
APOSTROPHE
0 - 29 I
DB
70 30 30 30 30
00
CC oe 38 60 ee
DOLLAR SIGN
L.
DB
00
$
I
30 FC 30 30
oe
·
·
QUOTATION
LB.
DB
00
Co CC
30
00
30
00
66
00
30
00
00
60
00
00
00
SPACE
EXCLAMA T I ON
00
3e 6e CC FE oe
00
CC oe
- ~4
4
DB
038H, 060H. OCOH I OF8H I OCCH, OCCH, 0 7 8H, OOOH
18 30 30
DB
OFCH, OCCH, OOCH, 0 18H, 030H, 030H, 030H, OOOH
o_37 7
78 ee ee
DB
07 8H, OCCH I OCCH, 0 78H, OCCH, OCCH, 078H, OOOH
0_38 8
00
CC CC
00
CC CC 7e oe
18
DB
078H, OCCH, OCCH I 07CH I OOCH, 0 18H, 070H I OOOH
0 39 9
30 00 00 30
DB
OOOH, 030H, 030H, OOOH, OOOH. 030H. 03QH, QOOH
0_3A
30 00 00 30
DB
OOOH I 030H I 030H, OOOH, OOOH. 030H, 030H, 060H
0 3B ;
60 co 60 30
DB
o 18H, 030H, 060H, OCOH, 060H, 030H, 0 18H, OOOH
0_3C <
Fe 00 00 Fe
DB
OOOH, OOOH, OFCH, OOOH, OOOH, OFCH, OOOH, OOOH
0_30
18 oe
18 30
DB
060H. 030H. 0 18H, OOCH, 0 18H, 030H, 060H, OOOH
D 3E >
GREATER THAN
18 30 00
DB
o 78H, OCCH, OOCH, 0 18H. 030H. OOOH, 030H, OOOH
0_3F
QUESTION MARK
C6 DE DE DE CO
00
78 CC CC FC CC
00
66
7e 66
DB
o 7CH, OC6H, OOEH, ODEH, OOEH, OCOH, 078H, OOOH
0_40
DB
030H, 0 7 8H. OCCH. OCCH. OFCH I OCCH, OCCH, 00 OH
D 41
DB
OFCH, 066H. 066H, 07CH, 066H. 066H. OFCH, OOOH
0_42 B
DB
03CH, 066H I OCOH, OCOH, OCOH. 066H. 03CH, OOOH
0_43 e
6e
DB
OF8H. 06CH. 066H, 066H, 066H I 06CH. OF8H, OOOH
Fa 00
lC96 FE 62 68 78 68 62
0_44 0
DB
OFEH, 062H, 068H, 0 78H. 068H. 062H. OFEH, OOOH
0_45 E
DB
OFEH, 062H. 068H. 078H. 068H. 060H. OFOH, 00 OH
D 46 F
lC6E 7C
78
IC76 30
ee
I C7E FC
Fe
IC86 3e
3e
IC8E F8
oe
"
00
66 CO CO co
00
6e
" " "
FE 00
I C9E FE 62 68
Fa 00
ICA6 3e 66 CO
3E 00
lCAE CC CC CC
ee 00
ICB6 78 30 30
78 00
lCBE IE oe oe
78 00
1 CC6 E6 66 6e
E6 00
I CCE FO 60 60
FE 00
1 CD6 C6 EE FE
e6 00
I COE C6 E6 F6
e6 00
lCE6 38 6C C6
38 00
1 CEE FC
"
"
78 68 60
CO CE
"
5-194
-
,
~
,
·
A
-
DB
03CH, 066H, OCOH, OCOH, OCEH. 066H. 03EH, 00 OH
0_47 G
FC CC CC
DB
OCCH. OCCH. OCCH. OFCH. OCCH, OCCH. OCCH, OOOH
D 48 H
30 30 30
08
078H, 030H. 030H. 030H, 030H. 030H. 078H, 00 OH
0_49
OC CC ee
DB
01 EH, OOCH. OOCH. OOCH, OCCH, OCCH. 078H, OOOH
0_ 4A J
78 6e 66
DB
OE6H, 066H. 06CH. 078H, 06CH. 066H. OE6H, 00 OH
D_ 48 K
60 62
DB
OFOH, 060H, 060H, 060H, 062H. 066H. OFEH. OOOH
0_ 4C L
FE 06 e6
DB
OC6H, OEEH, OFEH, OFEH, OD6H. OC6H. OC6H. 00 OH
0_40 M
DE CE C6
DB
OC6H, OE6H, OF6H, OOEH, OCEH. OC6H, OC6H. OOOH
0_ 4E N
038H, 06CH. OC6H. OC6H. OC6H. 06CH. 038H, OOOH
0_ 4F 0
"
C6 C6 6e
-
I
" "
7e 60 60
DB
OFCH, 066H, 066H, 0 7CH, 060H. 060H. OFOH. OOOH
0 50 P
CC CC CC DC 78
00
7e 6e
00
CC EO 70 tc CC
DB
o 78H. OCCH. OCCH. OCCH I OOCH, 0 78H, 0 1CH. OOOH
0
" "
"
DB
OFCH. 066H, 066H, 0 7CH, 06CH. 066H, OE6H. OOOH
0 52 R
DB
07 8H. OCCH. OEOH. 070H. 0 1CH, OCCH, 0 7 8H. OOOH
30 30 30 30
DB
OFCH. OB4H. 030H. 030H. 030H. 030H. 07 8H, OOOH
CC CC CC CC
DB
OCCH. OCCH. OCCH. OCCH. OCCH, OCCH, OFCH, OOOH
CC CC CC 78
DB
OCCH, OCCH, OCCH, OCCH, OCCH. 078H. 030H. OOOH
e6 06 FE EE
DB
OC6H. OC6H. OC6H. 006H, OFEH, OEEH. OC6H. OOOH
Fa 00
tCF6 78
Ie
I CFE FC
E6
1006 78
78
I DOE FC
78
1016 CC
Fe
IDlE CC
3D
1026 C6
-
00
30
00
30
60
30
00
00
00
30
60 00
IC66 78 ee
30 00
00
84
00
CC
00
CC
00
e6
ORGS
-
51
0 - 53
0 54
D 55
0 56
0_57
Q
5
T
U
V
•
COLON
SEMICOLON
EQUAL
AT
1-14
06-10-85
IBM Personal Computer MACRO Assemb I er
VersIon 2.00
ORGS
06/10/85
COMPATIBILITY MODULE
-----
1443
1444
1445
1446
1441
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
\ 462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
t 492
1493
1494
1495
1496
1497
1498
1499
1500
150 1
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
ISIS
1516
1511
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
e6
102E C6
e6
1036 ee
78
103E FE
FE
1046 78
78
104E CO
02
1056 78
78
lOSE 10
00
1066 00
00
00
e6 6e 38 38
00
ee ee 78 30
00
e6 8e 18 32
00
60 60 60 60
00
60 30 18 oe
00
18 18 18 18
00
38 6e e6 00
00
00 00 00 00
FF
I06E 30
00
ID76 00
76
107E EO
DC
1086 00
78
108E Ie
30
76
1096 00
78
109E 38
FO
IOA6 00
oe
I DAE EO
E6
1086 30
78
lOBE oe
ee
10C6 EO
E6
IOCE 70
78
1006 00
C6
lODE 00
CC
IOE6 00
78
IDEE 00
60
IOF6 00
DC
IOFE 00
FO
lE06 00
F8
IEOE 10
18
IEI6 00
76
IEIE 00
30
IE26 00
6C
IE2E 00
C6
IE36 00
DC
IE3E 00
FC
IE46 IC
IC
tE4E 18
18
I E56 EO
EO
lESE 76
00
lE66 00
FE
6e
08
OC6H, OC6H, 06CH, 038H, 038H, 06CH, OC6H, OOOH
0
58 X
30
08
OCCH, OCCH. OCCH, 0 18H, 030H, 030H, 0 18H, OOOH
0
Y
66
08
OFEH, OC6H. 08CH, 0 18H, 032H, 066H, OFEH, OOOH
60
08
078H, 060H, 060H, 060H, 060H, 060H, 0 18H, OOOH
06
DB
OCOH, 060H, 030H, 0 18H, OOCH, 006H, 002H, OOOH
0
18
08
018H, 0 18H, 0 18H, 0 18H, 0 18H, 0 18H, 078H, OOOH
0_50
00
DB
01 OH, 038H, 06CH, OC6H, OOOH, OOOH, OOOH, OOOH
0
DB
OOOH, OOOH, OOOH, OOOH, OOOH, OOOH, OOOH, OFFH
D_5F
- 59
0 5A
0 58
-
Z
LEFT BRACKET
BACKSLASH
5e
- 5E
RIGHT BRACKET
"
.
00 00 00
08
030H, 030H, 0 I 8H, OOOH, OOOH. OOOH, OOOH, OOOH
0_60
78 oe 7e ee
08
OOOH, OOOH, 0 7 8H. OOCH, a 7CH. OCCH. 0 76H, OOOH
0
60 60 7e 66 66
0_62 b
00
00
00
00
00
00
oe
00
00
00
6e
00
00
F8
08
OEOH, 060H, 060H, 0 1CH, 066H, 066H. OOCH, OOOH
78 ee Co ee
08
OOOH, OOOH, 0 7 8H, OCCH, OCOH. OCCH. 0 7 8H, OOOH
0
oe 7e ee ee
DB
a I CH, OOCH, OOCH, 0 7CH, OCCH, OCCH. 0 76H, OOOH
0_64 d
co
08
OOOH, OOOH, 0 78H, OCCH, OFCH, OCOH, 0 7 8H, OOOH
0_65
08
038H, 06CH, 060H, OFOH, 060H. 060H, OFOH, 00 OH
0
OOOH, OOOH, 0 76H, OCCH. OCCH, 07CH, a OCH, OF8H
0
78 ee FC
60 FO 60
76 ee ee
60 6e 76 66 66
00
00 70
00
00 oe
78
60 66
00
30 30
00
00 ec
00
00 F8
00
00 78
00
00
FO
00
IE
00
00
00
00
30
00
00
00
00
00
00
00
00
00
00
F8
00
00
30
00
18
00
30
00
DC
00
10
00
- 61
08
OEOH. 060H, 06CH. 076H. 066H, 066H, OE6H. OOOH
0
30 30 30
DB
030H, OOOH, 0 70H, 030H, 030H, 030H, a 7 8H, OOOH
0
oe OC CC
08
OOCH. OOOH, OOCH, OOCH, OOCH, OCCH, OCCH. 07 8H
6e 78 6e
08
OEOH, 060H, 066H, 06CH, 0 7 8H, 06CH, OE6H, OOOH
- 63
- 66
- 67
f
,
68 h
- 69
0 6A
0 68
0 6e
-
J
k
30 30 30
DB
070H, 030H, 030H, 030H. 030H, 030H, 078H, OOOH
08
OOOH, OOOH, OCCH, OFEH, OFEH, 006H. OC6H. OOOH
0_60 m
CC CC CC
08
OOOH. OOOH, OF8H, OCCH. OCCH. OCCH, OCCH. OOOH
D_6E
"
CC CC CC
08
OOOH, OOOH, 078H, OCCH. OCCH. OCCH, 078H. OOOH
0_6F
0
7e
08
OOOH, OOOH. OOCH, 066H. 066H, 0 7CH. 060H. OFOH
0
76 CC CC 7C
08
OOOH. OOOH. 016H, OCCH. OCCH. 0 7CH. OOCH. 0 1EH
0
DC 76 66 60
08
OOOH, OOOH. OOCH, 076H, 066H, 060H. OFOH, OOOH
0
- 71
- 72
7C CO 78 DC
08
OOOH. OOOH, 07CH. OCOH. 0 7 8H. OOCH, OF8H. OOOH
0 - 73
08
01 OH. 030H, 07CH, 030H, 030H, 034H. 0 1 8H, OOOH
0
ee CC CC CC
08
OOOH, OOOH, OCCH. OCCH, OCCH, OCCH, 0 76H, OOOH
0
ce cc CC 78
08
OOOH. OOOH. OCCH, OCCH. OCCH, 078H. 030H, OOOH
08
OOOH. OOOH, OC6H, 006H, OFEH. OFEH. 06CH, OOOH
C6 6C 38 6e
08
OOOH, OOOH, OC6H, 06CH, 038H. 06CH, OC6H, OOOH
ec CC CC 7C
08
OOOH. OOOH. OCCH, OCCH, OCCH, 0 7CH. OOCH. OF8H
Fe 98 30
08
OOOH. OOOH, OFCH, 098H, 030H, 064H, OFCH, OOOH
30 EO 30 30
08
01 CH. 030H. 030H, OEOH, 030H, 030H, 0 I CH, OOOH
18 00
18
08
o 18H, 0 18H, 0 18H, OOOH, 0 18H,O 18H, a 18H, OOOH
30
IC 30 30
08
OEOH. 030H, 030H, 0 I CH, 030H, 030H, OEOH, OOOH
00
00 00 00
08
076H, OOCH, OOOH, OOOH, OOOH, OOOH, OOOH, OOOH
38 6C G6 C6
08
OOOH,O I OH, 038H, 06GH, OC6H, OG6H. OFEH, OOOH
I
70 P
7e 30 30 34
C6 06 FE FE
APOSTROPHE REV
0
FE FE 06
DC 66 66
CIRCUMFLEX
UNDERSCORE
q
,
- 74
- 75 c
0 76
0 77 w
0 78
0 79 Y
0 7A
0 78
0 7C
0 70
0 7E ,
0 7F
-
•
LEFT BRACE
BROKEN STROKE
RIGHT BRACE
TILDE
OEL TA
TIME OF DAY
IE6E
lE6E
I E6E E9 0000 E
ORG
ORG
TIME_OF _DAY
JMP
: ----lEAS
lEAS
1EA5 E9
TIMER
ORG
DRG
TIMER
- IN7oMP
OFE6EH
01 E6EH
EQU
TIME_OF _DAY
•
YECTOR ON TO MOYEO BIOS CODE
I
INTERRUPT
OFEA5H
01 EA5H
EQU
TIMER INT
-
•- ,
,
VECTOR ON TO MOYED 810S CODE
ORGS 5-195
1-15
06-1 0~85
IBM Personal Computer MACRO Assembler
Version 2.00
ORGS ----- 06/10/85
COMPATIBILITY MODULE
1540
1541
1542
1543
1544
1545
1546
1547
1548
! 549
1550
1551
1552
1553
1554
1555
15?6
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
16 1 1
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
IEF3
IEF3
IEF3
IEF5
1EF7
1EF9
IEFB
IEFO
IEFF
IFO'I
PAGE
; -----
VECTOR TABLE
;;-
ORG
IEA5
0987
0000
0000
0000
0000
OF57
0000
VECTOR TABLE
- OW
OW
OW
OW
OW
OW
OW
OW
R
R
E
E
E
E
R
E
;----IF03
I F05
IF07
I F09
IFOB
I FOO
I FOF
lFll
IFI3
IFI5
IFI7
IFI9
IFIB
IFIO
IF1F
lF21
1065
1840
1841
OC69
R
R
R
R
073~ R
1859 R
082E R
OF02 R
0000
06F2 R
lE6E R
lF63 R
IF53 R
10A4 R
OFC7 R
SOFTWARE
OW
OW
OW
OW
OW
OW
OW
OW
OW
OW
Ow
OW
OW
OW
OW
OW
0000
IF23
IF23
IF25
I F27
lF29
I F2B
IF2D
I F2F
lF31
INTERRUPTS
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OOOOOH
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OFFSET
OOOOOH
E
OW
OW
OW
OW
OW
OW
OW
OW
E
E
E
E
E
E
E
DUMMY
;; -
ORO
ORO
IF53
DUMMY_RETURN
lF53 CF
AT LOCATION OFEF3H
VECTOR TABLE VALUES FOR POST TESTS
[NT 08H - HARDWARE TI MER 0
IRQ
I NT 09H - KEYBOARD
IRQ
JNT OAH - SLAVE INTERRUPT INPUT
tNT OBH IRQ
INT OCH IRQ
INT ODH IRQ
INT OEH - OISKETTE
IRQ
INT OFH IRQ
(BIOS CALLS AND POINTERS)
VIDEO 10
EQU I PMENT
MEMORY SIZE DET
0 I SKETTE 10RS232 10CASSETTE 10
KEYBOARD-IO
PR J NTER To
BOOT STRAP
TIME-OF DAY
DUMMY RETURN
DUMMY-RETURN
V I DEO-PARMS
0 J SK BASE
-
SLAVE_VECTOR_ TABLE
0000
0000
0000
0000
0000
0000
0000
0000
IF53
=
OFEF3H
01 EF3H
LABEL
WORD
OFFSET T I MER I NT
OFFSET KB I NT
OFFSET
011
OFFSET
011
OFFSET
011
OFFSET
01 I
OFFSET DISK tNT
OFFSET
01'-
ORO
LABEL WORO
OFFSET RTC INT
OFFSET RE DIRECT
OFFSET
oTI
OFFSET
01 I
OFFSET
01 I
OFFSET I NT 287
OFFSET
olT
OFFSET
Oil
INT IOH -- VIDEO DISPLAY
I NT I I H -- GET EQU I PMENT FLAG WORD
INT 12H -- GET REAL MODE MEMORY SIZE
INT 13H -- DISKETTE
INT 14H -- COMMUNICATION ADAPTER
INT ISH -- EXPANDED BIOS FUNCTION CALL
I NT 1 6H - - KEyeOARD INPUT
I NT 17H -- PR I NTER OUTPUT
[NT 18H -- OF600H INSERTED FOR BASIC
INT 19H -- BOOT FROM SYSTEM MEDIA
INT IAH -- nME OF DAY
[NT IBH -- KEYBOARD BREAK ADDRESS
[NT I CH -- T I MER BREAK ADDRES5
[NT IDH -- V I OED PARAMETERS
INT lEH -- DISKETTE PARAMETERS
INT IFH -- POINTER TO VIDEO EXTENSION
(
!
INTERRUPT 10H THRU 7FH
INT
[NT
INT
INT
INT
INT
INT
INT
70H
11H
72H
13H
74H
75H
76H
77H
-
REAL TIME CLOCK
REDIRECT TO INT OAH
-MATH COPROCESSOR
-FIXED DISK
IRQ
IRQ
IRQ
IRQ
IRQ
IRQ
IRQ
IRQ
I NTERRUPT HANDLER
OFF53H
o IF53H
BI
EQU
as
DUMMY
(NULL)
I NTERRUPT RETURN
IRET
;-----
PRINT SCREEN
;;-
ORG
OFF54H
ORO
o IF54H
PR I NT SCREEN
EQU
S
.JMP
PRINT_SCREEN_l
.LIST
; -- - - - -- -- -
IF54
'" I F54
1F54 E9 0000 E
--------
;
;
;
;
----- - ----- - - - - - - - --
VECTOR ON TO MOVED B I
TUTOR
as
CODE
POWER ON RESET VECTOR
- --- ----- -- ----- - -- -- - -- ---- --- - - - - - - - --
;;IFFO
ORO
ORO
OFFFOH
o IFFOH
POWER ON RESET
P_O_R
IFFO EA
IFFI 005B R
IFF3 FOOO
IFF5 30 36 2F 31
38 35
30 2F
IFFE
IFFE FC
5-196
DB
OW
OW
OEAH
OFFSET
OFDOOH
DB
'06/10/85'
ORO
o IFFEH
MODEL_BYTE
DB
I FFF'
CODE
ORGS
POWER ON RESTART EXECUTION LOCATION
LABEL
ENDS
END
RESET
HARD CODE FAR .JUMP TO SET
OFFSET
SEGMENT
RELEASE MARKER
THIS PC'S 10 ( MODEL BYTE)
CHECKSUM AT LAST LOCATION
8
9
10
11
12
13
14
15
SECTION 6. INSTRUCTION SET
Contents
80286 Instruction Set .............................. 6-3
Data Transfer ................................. 6-3
Arithmetic .................................... 6-6
Logic ........................................ 6-9
String Manipulation ............................ 6-11
Control Transfer .............................. 6-13
Processor Control ............................. 6-17
Protection Control ............................ 6-18
80287 Coprocessor Instruction Set ...................
Data Transfer ................................
Comparison ..................................
Constants ...................................
Arithmetic ...................................
Transcendental ...............................
6-22
6-22
6-23
6-24
6-25
6-26
Instruction Set
6-1
Notes:
6-2
Instruction Set
80286 Instruction Set
Data Transfer
MOV
= move
Register to Register/Memory
1000100w
mod reg r/w
Register/Memory to Register
1000101w
mod reg r/w
Immediate to Register/Memory
1100011w
mod 000 r/w
data
data if w
Immediate to Register
1011wreg
data
data if w
=
1
Memory to Accumulator
1010000w
addr-low
addr-high
Accumulator to Memory
1010001w
addr-low
addr-high
Register/Memory to Segment Register
10001110
modOreg r/w
reg ¢ 01
Segment Register to Register/Memory
10001100
modOreg r/w
PUSH = Push
Memory
11111111
modll0 r/w
Instruction Set
6-3
Register
01010reg
Segment Register
000regll0
Immediate
011010s0
PUSHA
data
data if s
= Push All
01100000
POP
= POp
Memory
10001111
modOOO rim
Register
01011reg
Segment Register
OOOreg 111
reg 'I- 01
POPA = POp All
I
01100001
XCHG = Exchange
Register/Memory with Register
1000011w
mod reg rim
Register with Accumulator
10010reg
6-4
Instruction Set
o
IN
= Input From
Fixed Port
1110010w
port
Variable Port
1110110w
OUT = Output To
Fixed Port
1110011w
port
Variable Port
1110111w
XLAT
= Translate Byte to AL
11010111
LEA = Load EA to Register
10001101
I
mod reg rim
LDS = Load Pointer to DS
11000101
I
mod reg rim
mod
~ 11
mod
~ 11
LES = Load Pointer to ES
11000100
I
mod reg rim
LAUF = Load AU with Flags
I
10011111
SAHF = Store AU with Flags
10011110
Instruction Set
6-5
PUSHF = Push FIags
I
10011100
POPF = POp Flags
I
10011101
Arithmetic
ADD = Add
Register/Memory with Register to Either
OOOOOOOw
mod reg rim
Immediate to Register Memory
100000sw
modDOD rim
data if sw = 01
data
Immediate to Accumulator
0000010w
data
data if w = 1
ADC = Add with Carry
Register/Memory with Register to Either
000100dw
mod reg rim
Immediate to Register/Memory
100000sw
modOOO rim
data
data if sw = 01
Immediate to Accumulator
0001010w
INC
=
data
Increment
Register/Memory
1111111w
6-6
modOOO rim
Instruction Set
data if w
=1
Register
01000reg
SUB
= Subtract
Register/Memory with Register to Either
001010dw
mod reg rim
Immediate from Register/Memory
100000sw
mod101 rim
data
data if sw
01
data if sw
01
Immediate from Accumulator
00101 lOw
data
data if w
SBB = Subtract with Borrow
Register/Memory with Register to Either
000110dw
mod reg rim
Immediate to Register/Memory
100000sw
mod011 rim
data
Immediate to Accumulator
0001110w
DEC
=
data
data if w
Decrement
Register/Memory
1111111w
mod001 rim
Register
01001 reg
CMP
=
Compare
Register/Memory with Register
0011101w
mod reg rim
Instruction Set
6-7
Register with RegisterlMemory .
00ll100w
1 mod reg rim
Immediate with RegisterlMemory
100000sw
1
modll1 rim
1
data
data if sw
Immediate with Accumulator
0001110w
data if w = 1
data
NEG = Change Sign
1
1111011w
AAA
1 mod011
rim
= ASCII Adjust for Add
1 00110111
DEC
::i::
Decimal Adjust for Add
I. 00100111
AAS = ASCII Adjust for Subtract
00111111
DAS = Decimal Adjust for Subtract
I
00110111
MUL = Multiply (Unsigned)
1
1111011w
1 modl00
rim
IMUL = Integer Multiply (Signed)
1
1111011w
6-'8
1
modl0l
Instruction Set
rim
= 01
IIMUL = Integer Immediate Multiply (Signed)
01101051
I
mod reg
rim
Data
I Data
if 5
=
0
DIV = Divide (Unsigned)
1111011w
I
modll0
rim
IDIV = Integer Divide (Signed)
1111011w
I
mod111
rim
AAM = ASCII Adjust for Multiply
11010100
00001010
AAD = ASCII Adjust for Divide
11010101
00001010
CBW = Convert Byte to Word
10011000
CWD = Convert Word to Double Word
10011001
Logic
Shift/Rotate Instructions
Register/Memory by
1101000w
I
mod TTT rim
Register/Memory by CL
1101001w
mod TTT rim
Instruction Set
6-9
Register/Memory by Count
1100000w
mod TTT rim
T T T
Instruction
000
001
010
011
100
101
111
AND
count
ROL
ROR
RCL
RCR
SHL/SAL
SHR
SAR
= And
Register/Memory and Register to Either
001000dw
mod reg rim
Immmediate to Register/Memory
1000000w
modOOO rim
data
data if w
Immediate to Accumulator
0010010w
data
data if w
TEST = AND Function to Flags; No Result
Register/Memory and Register
1000010w
mod reg rim
Immediate Data and Register/Memory
1111011w
modOOO rim
data
Immediate to Accumulator
0000110w
data
data if w
Or= Or
Register/Memory and Register to Either
0000 Odw
6-10
mod reg rim
Instruction Set
data if w
Immediate to Register/Memory
1000000w
modOOl rim
data if w
data
=
1
=
1
Immediate to Accumulator
0000110w
data
data if w
=
1
XOR = Exclusive OR
Register/Memory and Register to Either
001100dw
mod reg rim
Immediate to Register/Memory
1000000w
modll0r/m
data if w
data
Immediate to Accumulator
0010010w
data
data if w
=
1
NOT = Invert Register/Memory
1111011w
modOlO rim
String Manipulation
MOVS
= Move Byte Word
1010010w
CMPS
=
Compare Byte Word
1010011w
SCAS = Scan Byte Word
I
1010111w
LODS = Load Byte Word to AL/ AX
I
1010110w
Instruction Set
6-11
STOS = Store Byte Word from ALI AX
1010101w
INS = Input Byte from DX Port
0110110w
OUTS = Output Byte Word to DX Port
0110111w
REPIREPNE, REPZ/REPNZ
=
Repeat String
Repeat Move String
11110011
1010010w
Repeat Compare String (z/Not z)
1111001z
1010011w
Repeat Scan String (z/Not z)
1111001z
1010111w
Repeat Load String
11110011
1010110w
Repeat Store String
11110011
1010101w
Repeat Input String
11110011
011011 Ow
Repeat Output String
11110011
6-12
1010011w
Instruction Set
Control Transfer
CALL = Call
Direct Within Segment
11101000
disp-low
disp-high
Register/Memory Indirect Within Segment
11111111
mod010 rim
Direct Intersegment
10011010
Segment Offset
Segment Selector
Indirect Intersegment
11111111
JMP
mod011 rim
(mod
~
11)
= Unconditional Jump
Short/Long
11101011
disp-low
Direct within Segment
11101001
disp-low
disp-high
Register/Memory Indirect Within Segment
11111111
mod100 rim
Direct Intersegment
11101010
Segment Offset
Segment Selector
Indirect Intersegment
11111111
RET
mod101 rim
(mod ¢ 11)
= Return from Call
Within Segment
11000011
Instruction Set
6-13
Within Segment Adding Immediate to SP
data-low
11000010
data-high
Intersegment
11001011
Intersegment Adding Immediate to SP
data-low
11001010
data-high
JE/JZ = Jump on Equal/Zero
I
01110100
disp
JL/JNGE = Jump on Less/Not Greater, or Equal
01111100
JLE/JNG
=
01111110
disp
Jump on Less, or Equal/Not Greater
I
disp
JB/JNAE = Jump on Below/Not Above, or Equal
01110010
disp
JBE/JNA = Jump on Below, or Equal/Not Above
01110110
JP/ JPE
I
I
disp
= Jump on Parity/Parity Even
01111010
disp
JO = Jump on Overflow
01110000
disp
JS = Jump on Sign
01111000
6-14
disp
Instruction Set
JNE/ JNZ = Jump on Not Equal/Not Zero
I
01110101
I
disp
JNL/JGE = Jump on Not Less/Greater, or Equal
I
01111101
I
disp
JNLE/JG = Jump on Not Less, or Equal/Greater
I
01111111
I
d i sp
JNB/JAE = Jump on Not Below/Above, or Equal
I
01110011
I
disp
JNBE/ JA = Jump on Not Below, or Equal/Above
I
01110111
I
disp
JNP/JPO = Jump on Not Parity/Parity Odd
I
01111011
JNO
I
disp
= Jump on Not Overflow
101110001
JNS
I
I
disp
= Jump on Not Sign
01111011
LOOP
I
disp
= Loop ex Times
11100010
I
disp
LOOPZ/LOOPE = Loop while Zero/Equal
11100001
disp
Instruction Set
6-15
LOOPNZ/LOOPNE = Loop while Not Zero/Not Equal
11100000
I
disp
JCXZ = Jump on CX Zero
11100011
I
disp
ENTER = Enter Procedure
11001000
I
data-low
data-high
LEAVE = Leave Procedure
11001001
INT = Interrupt
Type Specified
11001101
Type
Type 3
11001100
INTO = Interrupt on Overflow
11001110
IRET
=
Interrupt Return
110011 i 1
BOUND = Detect Value Out of Range
01100010
6-16
mod reg rim
Instruction Set
Processor Control
CLC = Clear Carry
11111000
CMC = Complement Carry
11110101
STC = Set Carry
11111001
CLD = Clear Direction
11111100
STD
= Set Direction
11111101
CLI Clear Interrupt
11111010
STI
=
Set Interrupt
11111011
HLT = Halt
11110100
WAIT = Wait
10011011
LOCK = Bus Lock Prefix
11110000
Instruction Set
6-17
CTS = Clear Task Switched Flag
I
00001111
I
00000110
ESC = Processor Extension Escape
11011TTT
modLLL rim
Protection Control
LGDT = Load Global Descriptor Table Register
I
00001111
I
00000001
I
modOl0 rim
SGDT = Store Global Descriptor Table Register
I
00001111
I
00000001
I
modOOO rim
LIDT = Load Interrupt Descriptor Table Register
I
00001111
I
00000001
I
modOll rim
SIDT = Store Interrupt Descriptor Table Register
I
00001111
I
00000001
I
modOOl rim
LLDT = Load Local Descriptor Table Register from
Register/Memory
I
00001111
I
00000000
I
modOlO rim
SLDT = Store Local Descriptor Table Register from
Register/Memory
I
00001111
I
00000000
I
modOOO rim
LTR = Load Task Register from Register/Memory
00001111
6-18
00000000
Instruction Set
modOll rim
STR = Store Task Register to Register/Memory
00001111
LMSW
00000000
mod001 rim
= Load Machine Status Word from Register/Memory
00001111
SMSW
I
00000001
I
mod110r/m
= Store Machine Status Word
00001111
I
00000001
I
mod100 rim
LAR = Load Access Rights from Register/Memory
00001111
I
00000010
I
mod reg rim
LSL = Load Segment Limit from Register/Memory
00001111
00000011
I
mod reg rim
ARPL = Adjust Requested Privilege Level from Register/Memory
I
VERR
I
mod reg rim
= Verify Read Access; Register/Memory
00001111
VERR
01100011
=
00000000
mod100 rim
Verify Write Access
00001111
00000000
mod101 rim
Instruction Set
6-19
The effective address (EA) of the memory operand is computed
according to the mod and rim fields:
If mod = 11, then rim is treated as a reg field.
If mod = 00, then disp = 0, disp-Iow and disp-high are
absent.
If mod = 01, then disp = disp-Iow sign-extended to 16 bits,
disp-high is absent.
If mod = 10, then disp = disp-high:disp-Iow.
If rim
If rim
If rim
If rim
If rim
If rim
If rim
If rim
=
=
=
=
=
=
=
=
000, then EA
001, then EA
010, then EA
011, then EA
100, then EA
101, then EA
110, then EA
111, then EA
=
=
=
=
=
=
=
=
(BX) + (SI) + DISP
(BX) + (SI) + DISP
(BP) + (SI) + DISP
(BP) + (DI) + DISP
(SI) + DISP
(DI) + DISP
(BP) + DISP
(BX) + DISP
DISP follows the second byte of the instruction (before data if
required).
Note: An exception to the above statements occurs when
mod=OO and r/m= 110, in which case EA = disp-high;
disp-Iow.
Segment Override Prefix
00lregOOl
6-20
Instruction Set
The 2-bit and 3-bit reg fields are defined as follows:
2-Bit reg Field
reg
Segment Register
00
01
ES
CS
Segment Register
reg
10
11
SS
OS
3-Bit reg Field
16-bit (w
000
001
010
011
100
101
110
111
= 1)
AX
CX
OX
BX
SP
BP
SI
0I
8-bit (w
000
001
010
011
100
101
110
111
=
0)
AL
CL
OL
BL
AH
CH
OH
BH
The physical addresses of all operands addressed by the BP
register are computed using the SS segment register. The physical
addresses of the destination operands of the string primitive
operations (those addressed by the DI register) are computed
using the ES segment, which may not be overridden.
Instruction Set
6-21
80287 Coprocessor Instruction Set
The following is an instruction set summary for the 80287
coprocessor. In the following, the bit pattern for escape is 11011.
Data Transfer
FLD = Load
Integer/Real Memory to ST(O)
escape MF 1
I
mod 000 rim
Long Integer Memory to ST(O)
escape 111
I
mod 101 rim
Temporary Real Memory to ST(O)
escape 011
I
mod 101 rim
BCD Memory to ST(O)
escape 111
I
mod 100 rim
ST(i) to ST(O)
escape 001
11000ST(i)
FST = Store
ST(O) to Integer/Real Memory
escape MF 1
I
mod 010 rim
ST(O) to ST( i)
escape 101
11010 ST(i)
FSTP = Store and Pop
ST(O) to Integer/Real Memory
escape MF 1
6-22
mod 011 rim
Instruction Set
ST(O) to Long Integer Memory
escape 111
mod 111 rim
ST(O) to Temporary Real Memory
escape 011
mod 111 rim
ST(O) to BCD Memory
escape 111
mod 110 rim
ST(O) to ST( i )
11011 ST( i )
escape 101
FXCH = Exchange ST(i) and ST(O)
I escape
001
I
11001 STeil
Comparison
FCOM = Compare
IntegerlReal Memory to ST(O)
escape MF 0
mod 010 rim
STeil to ST(O)
escape 000
11010ST(i)
FCOMP = Compare and Pop
IntegerlReal Memory to ST(O)
escape MF 0
mod 011 rim
STeil to ST(O)
escape 000
11010ST(i)
Instruction Set
6-23
FCOMPP = Compare ST(i) to ST(O) and Pop Twice
I escape
110
I
11011001
FTST = Test ST(O)
I escape 001
FXAM
=
11100100
Examine ST(O)
escape 001
11100101
Constants
FLDZ = Load
+ 0.0 into ST(O)
I escape
I
000
FLD1 = Load
11101110
+ 1.0 into ST(O)
I escape 001
11101000
FLDP1 = Load
I escape 001
'TT
into ST(O)
11101011
FLDL2T = Load logz 10 into ST(O)
I escape
001
I
11101001
FLDLG2 = Load 10glO 2 into ST(O)
I escape
001
I
11101100
FLDLN2 = Load loge 2 into ST(O)
escape 001
6-24
11101101
Instruction Set
Arithmetic
FADD = Addition
Integer/Real Memory with ST(O)
escape MF 0
mod 000 rim
ST(i) and ST(O)
escape dPO
11000 ST(i)
FSUB = Subtraction
Integer/Real Memory with ST(O)
escape MF 0
mod lOR rim
ST(i) and ST(O)
escape dPO
1110R rim
FMUL = Multiplication
Integer/Real Memory with ST(O)
escape MF 0
mod 001 rim
ST( i) and ST(O)
escape dPO
11001 rim
FDIV = Division
Integer/Real Memory with ST(O)
escape MF 0
mod llR rim
ST(i) and ST(O)
escape dPO
FSQRT
l111R rim
= Square Root of ST(O)
escape 001
11111010
Instruction Set
6-25
FSCALE
= Scale ST(O) by ST(l)
I escape
001
I
FPREM
= Partial Remainder of ST(O) + ST(1)
I escape
001
11111101
11111000
FRNDINT = Round ST(O) to Integer
I escape
11111100
001
FXTRACT = Extract Components of ST(O)
I escape
11110100
001
FADS = Absolute Value of ST(O)
I escape
11100001
001
FCHS = Change Sign of ST(O)
I escape
001
I
11100000
Transcendental
FPTAN
I
= Partial Tangent of ST(O)
escape 001
I
11110010
FPATAN = Partial Arctangent of ST(O) +- ST(1)
I
escape 001
I
11110011
F2XM1 = 2 ST(O) -1
I
escape 001
I
11110000
FYL2X = ST(1) x Log2 [ST(O)1
I
escape 001
6-26
I
11110001
Instruction Set
FYL2XP1 = ST(1) x Log 2 [ST(O)
I
escape 001
I
+ 1]
11111001
FINIT = Initialize NPX
I
escape 011
I
11100011
FSETPM = Enter Protected Mode
I
escape 011
I
11100100
FSTSWAX = Store Control Word
escape 111
I
11100000
FLDCW = Load Control Word
escape 001
FSTCW
=
I
mod 101
rim
Store Control Word
escape 001
I
mod 111
rim
FSTSW = Store Status Word
escape 101
I
mod 101
rim
FCLEX = Clear Exceptions
escape 011
I
11100010
FSTENV = Store Environment
escape 001
I
mod 110
rim
FLDENV = Load Environment
escape 001
mod 100
rim
Instruction Set
6-27
FSAVE = Save State
I
escape 101
I
mod 110 rim
FRSTOR = Restore State
I
escape 101
I
mod 100 rim
FINCSTP = Increment Stack Pointer
escape 001
I
11110111
FDECSTP = Decrement Stack Pointer
I
escape 001
FFREE
I
I
111100110
= Free ST(i)
escape 101
I
11000ST(i)
FNOP = No Operation
escape 101
6-28
11010000
Instruction Set
MF is assigned as follows:
MF
Memory Format
00
01
10
11
32-bit Real
32-bit Integer
64-bit Real
16-bit Integer
The other abbreviations are as follows:
Term
Definition
Bit = 0
ST
Stack top
Stack top
d
P
R
Destination
Pop
Reverse*
Dest. is ST(O)
No pop
Dest. (op) source
Bit ¥- 0
( i )= ith register from
the top
Dest. is ST( i )
Pop
Source (op) dest.
* When d= 1, reverse the sense of R.
Instruction Set
6-29
Notes:
6-30
Instmction Set
SECTION 7. CHARACTERS,
KEYSTROKES, AND COLORS
Contents
Character Codes .................................. 7 -3
Quick Reference ................................. 7 -14
Characters, Keystrokes, and Colors
7-1
Notes:
7-2
Characters, Keystrokes, and Colors
Character Codes
As Text Attributes
Value
As Characters
Color/Graphics
Monitor Adapter
IBM
Monochrome
Display
Adapter
Black
Dark Grey
Non-Display
09
Black
Light Blue
High Intensity
Underline
OA
Black
Light Green High Intensity
Characters, Keystrokes, and Colors
7-3
As Text Attributes
Color/Graphics
Monitor Adapter
As Characters
Value
Hex
Dec
Symbol
18
24
t
Ctrl X
Blue
Dark Grey
High Intensity
19
25
!
Ctrl Y
Blue
Light Blue
High Intensity
Underline
1A
26
-+
Ctrl Z
Blue
Light Green High Intensity
1B
27
Ctrl [,
Esc, Shift
Esc, Crtl
Esc
Blue
Light Cyan
High Intensity
<-
Ctrl \
L
1C
28
1D
29
1E
30
1F
31
T
20
32
--...
Keystrokes
Modes Background Foreground
IBM
Monochrome
Display
Adapter
Blue
Light Red
High Intensity
Ctrl]
Blue
Light
Magenta
High Intensity
Ctrl6
Blue
Yellow
High Intensity
Ctrl-
Blue
White
High Intensity
Blank
Space
Space Bar,
Shift,
Space,
Ctrl Space,
Alt Space
Green
Black
Normal
!
!
Shift
Green
Blue
Underline
Green
Green
Normal
21
33
22
34
"
"
Shift
23
35
#
#
Shift
Green
Cyan
Normal
24
36
$
$
Shift
Green
Red
Normal
25
37
%
%
Shift
Green
Magenta
Normal
26
38
&
&
Shift
Green
Brown
Normal
27
39
Green
Light Grey
Normal
28
40
(
(
Shift
Green
Dark Grey
High Intensity
29
41
)
)
Shift
Green
Light Blue
High Intensity
Underline
2A
42
Light Green High Intensity
43
*
+
Note 1 Green
2B
*
+
Shift
Green
Light Cyan
High Intensity
2C
44
Light Red
High Intensity
45
,
-
Green
2D
,
-
Green
Light
Magenta
High Intensity
2E
46
Yellow
High Intensity
7 -4
,
,
Note 2 Green
Characters, Keystrokes, and Colors
As Text Attributes
Value
Hex
Dec
Color/Graphics
Monitor Adapter
As Characters
Symbol
Keystrokes
o
o
Modes Background Foreground
Green
IBM
Monochrome
Display
Adapter
White
High Intensity
Note 3 Cyan
Black
Normal
Note 3 Cyan
Blue
Underline
2
Note 3 Cyan
Green
Normal
3
3
Note 3 Cyan
Cyan
Normal
4
4
Note 3 Cyan
Red
Normal
5
5
Note 3 Cyan
Magenta
Normal
6
6
Note 3 Cyan
Brown
Normal
7
7
Note 3 Cyan
Light Grey
Normal
8
8
Note 3 Cyan
Dark Grey
High Intensity
9
9
Note 3 Cyan
Light Blue
High Intensity
Underline
Shift
Cyan
Light Green High Intensity
Cyan
Light Cyan
High Intensity
Cyan
Light Red
H ig h Intensity
Cyan
Light
Magenta
High Intensity
2F
47
30
48
31
49
32
50
2
33
51
34
52
35
53
36
54
37
55
38
56
39
57
3A
58
38
59
3C
60
3D
61
3E
62
>
3F
63
40
64
41
65
42
<
<
Shift
>
Shift
Cyan
Yellow
High Intensity
?
?
Shift
Cyan
White
H ig h Intensity
@
@
Shift
Red
Black
Normal
A
A
Note 4
Red
Blue
Underline
66
B
B
Note 4
Red
Green
Normal
43
67
C
C
Note 4
Red
Cyan
Normal
44
68
D
D
Note 4
Red
Red
Normal
45
69
E
E
Note 4
Red
Magenta
Normal
46
70
F
F
Note 4
Red
Brown
Normal
47
71
G
G
Note 4
Red
Light Grey
Normal
48
72
H
H
Note 4
Red
Dark Grey
High Intensity
49
73
Note 4
Red
Light Blue
High Intensity
Underline
4A
74
Note 4
Red
Light Green High Intensity
J
J
Characters, Keystrokes, and Colors
7-5
As Text Attributes
Value
Color/Graphics
Monitor Adapter
As Characters
Modes Background Foreground
IBM
Monochrome
Display
Adapter
Hex
Dec
Symbol
Keystrokes
4B
75
K
K
Note 4 Red
Light Cyan
High Intensity
4C
76
L
L
Note 4 Red
Light Red
High Intensity
4D
77
M
M
Note 4 Red
Light
Magenta
High Intensity
4E
78
N
N
Note 4 Red
Yellow
High Intensity
4F
79
0
0
Note 4 Red
White
H ig h Intensity
50
80
P
P
Note 4 Magenta
Black
Normal
51
81
Q
Q
Note 4 Magenta
Blue
Underline
52
82
R
R
Note 4 Magenta
Green
Normal
53
83
S
S
Note 4 Magenta
Cyan
Normal
54
84
T
T
Note 4 Magenta
Red
Normal
55
85
U
U
Note 4 Magenta
Magenta
Normal
56
86
V
V
Note 4 Magenta
Brown
Normal
57
87
W
W
Note 4 Magenta
Light Grey
Normal
58
88
X
X
Note 4 Magenta
Dark Grey
High Intensity
59
89
Y
Y
Note 4 Magenta
Light Blue
High Intensity
Underline
5A
90
Z
Z
Note 4 Magenta
Light Green High Intensity
5B
91
[
[
Magenta
Light Cyan
High Intensity
5C
92
\
\
Magenta
Light Red
High Intensity
Magenta
Light
Magenta
High Intensity
I
5D
93
I
5E
94
A
A
Shift
Magenta
Yellow
High Intensity
5F
95
-
-
Shilt
Magenta
White
High Intensity
Black
Normal
60
96
,
61
97
a
,
Brown
a
Note 5 Brown
Blue
Underline
62
98
b
b
Note 5 Brown
Green
Normal
63
99
c
c
Note 5 Brown
Cyan
Normal
64
100
d
d
Note 5 Brown
Red
Normal
65
101
e
e
Note 5 Brown
Magenta
Normal
66
102
I
I
Note 5 Brown
Brown
Normal
7 -6
Characters, Keystrokes, and Colors
As Text Attributes
Value
Color/Graphics
Monitor Adapter
As Characters
Modes Background Foreground
IBM
Monochrome
Display
Adapter
Hex
Dec
Symbol
Keystrokes
67
103
g
g
Note 5 Brown
Light Grey
Normal
68
104
h
h
Note 5
Brown
Dark Grey
High Intensity
69
105
i
i
Note 5
Brown
Light Blue
High Intensity
Underline
6A
106
j
j
Note 5 Brown
Light Green High Intensity
6B
107
k
k
Note 5 Brown
Light Cyan
High Intensity
6C
108
I
I
Note 5
Brown
Light Red
High Intensity
6D
109
m
m
Note 5
Brown
Light
Magenta
High Intensity
6E
110
n
n
Note 5
Brown
Yellow
High Intensity
6F
111
0
0
Note 5
Brown
White
High Intensity
70
112
P
P
Note 5
Light Grey
Black
Reverse Video
71
113
q
q
Note 5 Light Grey
Blue
Underline
72
114
r
r
Note 5
Light Grey
Green
Normal
73
115
s
s
Note 5
Light Grey
Cyan
Normal
74
116
t
t
Note 5
Light Grey
Red
Normal
75
117
u
u
Note 5
Light Grey
Magenta
Normal
76
118
v
v
Note 5
Light Grey
Brown
Normal
77
119
w
w
Note 5
Light Grey
Light Grey
Normal
78
120
x
x
Note 5
Light Grey
Dark Grey
Reverse Video
79
121
Y
Y
Note 5
Light Grey
Light Blue
High Intensity
Underline
7A
122
z
z
Note 5
Light Grey
Light Green H ig h Intensity
7B
123
I
I
Shift
Light Grey
Light Cyan
High Intensity
7C
124
I
I
I
I
Shift
Light Grey
Light Red
High Intensity
7D
125
I
I
Shift
Light Grey
Light
Magenta
High Intensity
7E
126
-
Shift
Light Grey
Yellow
High Intensity
7F
127
/':,
Light Grey
White
High Intensity
Ctrl
~
Characters, Keystrokes, and Colors
7-7
As Text Attributes
Hex
*
Dec
11
*
Color/Graphics
Monitor Adapter
As Characters
Value
11
Symbol
Keystrokes
Modes Background Foreground
IBM
Monochrome
Display
Adapter
80 to FF Hex are Flashing In both Color & IBM Monochrome
'*
11 11
11
80
128
C
Alt 128
Note 6 Black
Black
Non-Display
81
129
U
Alt 129
Note 6 Black
Blue
Underline
82
130
Alt 130
Note 6 Black
Green
Normal
83
131
e
a
Alt 131
Note 6 Black
Cyan
Normal
84
132
ii
Alt 132
Note 6 Black
Red
Normal
85
133
Alt 133
Note 6 Black
Magenta
Normal
86
134
a
a
Alt 134
Note 6 Black
Brown
Normal
87
135
I;
Alt 135
Note 6 Black
Light Grey
Normal
88
136
e
Alt 136
Note 6 Black
Dark Grey
Non-Display
89
137
e
Alt 137
Note 6 Black
Light Blue
High Intensity
Underline
8A
138
e
Alt 138
Note 6 Black
Light Green High Intensity
.,
8B
139
Alt 139
Note 6 Black
Light Cyan
High Intensity
8C
140
I
Alt 140
Note 6 Black
Light Red
High Intensity
80
141
;
Alt 141
Note 6 Black
Light
Magenta
High Intensity
8E
142
A
Alt 142
Note 6 Black
Yellow
High Intensity
8F
143
Note 6 Black
White
High Intensity
90
A
E
Alt 143
144
Alt 144
Note 6 Blue
Black
Normal
91
145
re
Alt 145
Note 6 Blue
Blue
Underline
92
146
A:
Alt 146
Note 6 Blue
Green
Normal
93
147
6
Alt 147
Note 6 Blue
Cyan
Normal
94
148
6
Alt 148
Note 6 Blue
Red
Normal
95
149
b
Alt 149
Note 6 Blue
Magenta
Normal
96
150
C.
Alt 150
Note 6 Blue
Brown
Normal
97
151
U
Alt 151
Note 6 Blue
Light Grey
Normal
98
152
Y
Alt 152
Note 6 Blue
Dark Grey
High Intensity
99
153
0
Alt 153
Note 6 Blue
Light Blue
High Intensity
Underline
9A
154
U
Alt 154
Note 6 Blue
Light Green High Intensity
7 -8
Characters, Keystrokes, and Colors
As Text Attributes
Value
Color/Graphics
Monitor Adapter
As Characters
Modes Background Foreground
IBM
Monochrome
Display
Adapter
Hex
Dec
Symbol
Keystrokes
9B
155
¢
Alt 155
Note 6
Blue
Light Cyan
High Intensity
9C
156
£
Alt 156
Note 6
Blue
Light Red
H ig h Intensity
9D
157
¥
Alt 157
Note 6
Blue
Light
Magenta
H ig h Intensity
9E
158
Pt
Alt 158
Note 6 Blue
Yellow
High Intensity
High Intensity
9F
159
f
Alt 159
Note 6 Blue
White
AO
160
a
Alt 160
Note 6 Green
Black
Normal
A1
161
r
Alt 161
Note 6 Green
Blue
Underline
A2
162
6
Alt 162
Note 6 Green
Green
Normal
A3
163
U
Alt 163
Note 6 Green
Cyan
Normal
A4
164
ii
Alt 164
Note 6 Green
Red
Normal
A5
165
N
Alt 165
Note 6 Green
Magenta
Normal
A6
166
~
Alt 166
Note 6 Green
Brown
Normal
A7
167
~
Alt 167
Note 6 Green
Light Grey
Normal
A8
168
G
Alt 168
Note 6 Green
Dark Grey
High Intensity
A9
169
Alt 169
Note 6 Green
Light Blue
High Intensity
Underline
AA
170
Alt 170
Note 6 Green
Light Green High Intensity
AB
171
'h
Alt 171
Note 6 Green
Light Cyan
High Intensity
AC
172
V.
Alt 172
Note 6 Green
Light Red
High Intensity
AD
173
i
Alt 173
Note 6 Green
Light
Magenta
High Intensity
AE
174
Alt 174
Note 6 Green
Yellow
High Intensity
AF
175
Alt 175
Note 6 Green
White
High Intensity
BO
176
«
»
......
..... ,
Alt 176
Note 6 Cyan
Black
Normal
B1
177
Alt 177
Note 6 Cyan
Blue
Underline
B2
178
I
I
Alt 178
Note 6 Cyan
Green
Normal
B3
179
Alt 179
Note 6 Cyan
Cyan
Normal
B4
180
r-
Alt 180
Note 6 Cyan
Red
Normal
B5
181
~
Alt 181
Note 6 Cyan
Magenta
Normal
B6
182 r---i
Alt 182
Note 6 Cyan
Brown
Normal
I
I
Characters, Keystrokes, and Colors
7-9
As Text Attributes
Value
Color/Graphics
Monitor Adapter
As Characters
Hex
Dec
B7
183
B8
Symbol
Keystrokes
Modes Background Foreground
IBM
Monochrome
Display
Adapter
r-n
Alt 183
Note 6 Cyan
Light Grey
Normal
184
~
Alt 184
Note 6 Cyan
Dark Grey
High Intensity
B9
185
U
h
Alt 185
Note 6 Cyan
Light Blue
High Intensity
Underline
Alt 186
Note 6 Cyan
Light Green High Intensity
Alt 187
Note 6 Cyan
Light Cyan
High Intensity
Alt 188
Note 6 Cyan
Light Red
H ig h Intensity
Alt 189
Note 6 Cyan
Light
Magenta
High Intensity
Alt 190
Note 6 Cyan
Yellow
High Intensity
Alt 191
Note 6 Cyan
White
High Intensity
Alt 192
Note 6 Red
Black
Normal
Alt 193
Note 6 Red
Blue
Underline
Alt 194
Note 6 Red
Green
Normal
BA
186
BB
187
BC
188
BD
189
b
1=11
CO
LU
190
B
191 r---,
--r=::::
192
C1
193
BE
BF
1
C2
194
C3
195
Ait 195
Note 6 Red
Cyan
Normal
C4
196
Alt 196
Note 6 Red
Red
Normal
C5
197
Alt 197
Note 6 Red
Magenta
Normal
C6
198
Alt 198
Note 6 Red
Brown
Normal
C7
199
Alt 199
Note 6 Red
Light Grey
Normal
C8
200
Alt 200
Note 6 Red
Dark Grey
H ig h Intensity
C9
201
Alt 201
Note 6 Red
Light Blue
High Intensity
Underline
CA
202
Alt 202
Note 6 Red
Light Green High Intensity
CB
203 ~
Alt 203
Note 6 Red
Light Cyan
High Intensity
CC
204
Alt 204
Note 6 Red
Light Red
High Intensity
CD
205
Alt 205
Note 6 Red
Light
Magenta
High Intensity
CE
206
Alt 206
Note 6 Red
Yellow
High Intensity
CF
207
Alt 207
Note 6 Red
White
High Intensity
Alt 208
Note 6 Magenta
Black
Normal
DO
7 -10
208
fI
~
~
II
I=ll==
.-I~
~~
11
Characters, Keystrokes, and Colors
As Text Attributes
Color/Graphics
IBM
Characters, Keystrokes, and Colors
7 -11
As Text Attributes
Value
As Characters
Color/Graphics
Monitor Adapter
Hex
Dec
Symbol
Keystrokes
EC
236
=
Alt 236
Note 6 Brown
Light Red
High Intensity
ED
237
Alt 237
Note 6 Brown
Light
Magenta
High Intensity
EE
238
€
Alt 238
Note 6 Brown
Yellow
High Intensity
EF
239
n
Alt 239
Note 6 Brown
White
High Intensity
FO
240
-
Alt 240
Note 6 Light Grey
Black
Reverse Video
F1
241
±
Alt 241
Note 6 Light Grey
Blue
Underline
F2
242
::>
Alt 242
Note 6 Light Grey
Green
Normal
F3
243
:S
Alt 243
Note 6 Light Grey
Cyan
Normal
F4
244
r
Alt 244
Note 6 Light Grey
Red
Normal
F5
245
Alt 245
Note 6 Light Grey
Magenta
Normal
F6
246
Alt 246
Note 6 Light Grey
Brown
Normal
F7
247
Alt 247
Note 6 Light Grey
Light Grey
Normal
F8
248
Alt 248
Note 6 Light Grey
Dark Grey
Reverse Video
F9
249
•
Alt 249
Note 6 Light Grey
Light Blue
High Intensity
Underline
FA
250
•
Alt 250
Note 6 Light Grey
Light Green High Intensity
FB
251
J
"'0"
r
Modes Background Foreground
IBM
Monochrome
Display
Adapter
Alt 251
Note 6 Light Grey
Light Cyan
High Intensity
FC
252
n
Alt 252
Note 6 Light Grey
Light Red
High Intensity
FD
253
2
Alt 253
Note 6 Light Grey
Light
Magenta
High Intensity
FE
254
•
Alt 254
Note 6 Light Grey
Yellow
High Intensity
FF
255
BLANK
Alt 255
Note 6 Light Grey
White
High Intensity
7 -12
Characters, Keystrokes, and Colors
Notes
1.
Asterisk (*) can be typed using two methods: press the (*)
key or, in the shift mode, press the 8 key.
2.
Period (.) can be typed using two methods: press the. key
or, in the shift or Num Lock mode, press the Del key.
3.
Numeric characters 0-9 can be typed using two methods:
press the numeric keys on the top row of the keyboard or, in
the shift or Num Lock mode, press the numeric keys in the
keypad portion of the keyboard.
4.
Uppercase alphabetic characters (A-Z) can be typed in two
modes: the shift mode or the Caps Lock mode.
5.
Lowercase alphabetic characters (a-z) can be typed in two
modes: in the normal mode or in Caps Lock and shift mode
combined.
6.
The three digits after the Alt key must be typed from the
numeric keypad. Character codes 1-255 may be entered in
this fashion (with Caps Lock activated, character codes
97-122 will display uppercase).
Characters, Keystrokes, and Colors
7 -13
Quick Reference
DECIMAL
VALUE
It
0
16
32
48
64
80
96 112
•
HEXA·
DECIMAL
VALUE
0
1
2
3
4
5
6
0
0
BLANK
(NULL)
~
BLANK
(SPACE)
1
1
g
.....
2
2
3
3
4
4
-• ,,
5
5
~
6
6
7
7
8
8
9
9
10
A
11
B
(f +-
12
C
9
L
13
D
J
~
14
E
~
•
15
F
~
7 -14
+
p , P
, 01 A Q a
@
q
b r
c s
d t
e u
f v
g W
h x
•
1 y
•
J z
•
t
II
••
#
~
$
§ %
&
,
• ~
•-
i (
0 ! )
.......
*
..
7
+
,
•
/
B R
C S
D T
E U
F V
GW
H X
I Y
•
J Z
•
,• K [ k {
I
I
L
< "'- I
- M ] m }
> N !\ n rv
2
3
4
5
6
7
8
9
?
•
0
Characters, Keystrokes, and Colors
-
0
6.
DECIMAL
VALUE
•
128 144 160 176 192 208 224 240
•0
HEXADECIMAL
VALUE
1
A
0
C
9
"
1
u re
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
A
8
B
...
./
:::::
./
./
00
II
./
A
f--
==
0
---n
e y c• FI
e 0 I ~ -I ,
_L
e UI
A
00
00
00
00
00
B
1 ¢
12
c
A
13
D
11
,1
1 ¥
E
15
F
,
-
• ~
w
A li « ld II
A J » II
00
14
£
~ ==j
~ d
F
ex: ---
r
+
->
<
1T -
:E
F u J
A
~
lL
~
00
,
u
E
{3
:::::
.....
e lE 0 III
a 0 u
,..,
a 0 n,.., , ,
a 0 N=
a u a -1
A
D
I
./
E a
00
C
,...-
J1
T
r
0
0
~
~
0
9 •
n
•
8
"n
00
¢
2
E
I
n
Characters, Keystrokes, and Colors
BLANK
'FF'
7 -15
Notes:
7 -16
Characters, Keystrokes, and Colors
SECTION 8. COMMUNICATIONS
Contents
Hardware ..............••.......•.•..•..••••..... 8-3
Establishing a Communications Link .....•.........•...• 8-5
Communications
8-1
Notes:
8-2
CommunicationS
Hardware
Information-processing equipment used for communication is
called data terminal equipment (DTE.) Equipment used to
connect the DTE to the communication line is called data
communication equipment (DCE.)
An adapter connects the data terminal equipment to the data
communication line as shown in the following figure:
Data
Terminal
Equipme_n_t___
Data
Communications
Equipment
Communications
line
~
Voice line
EIA/CCITT
Adapter
Cable Conforming to EIA
or CCITT Standards
The EIA/ CCITT adapter allows the data terminal equipment to
be connected to the data communications equipment using EIA or
CCITT standardized connections. An external modem is shown
in the figure; however, other types of data communications
equipment also can be connected to the data terminal equipment
using EIA or CCITT standardized connections.
EIA standards are labeled RS-x (recommended standards-x), and
CCITT standards are labeled V.x or X.x, where x is the number
of the standard.
The EIA RS-232 interface standard defines the connector type,
pin numbers, line names, and signal levels used to connect data
terminal equipment to data communications equipment for the
purpose of transmitting and receiving data. Since the RS-232
standard was developed, it has been revised three times. The
three revised standards are RS-232A, RS-232B, and the presently
used RS-232C.
Communications
8-3
The CCITT V.24 interface standard is equivalent to the RS-232C
standard; therefore, the descriptions of the EIA standards also
apply to the CCITT standards.
The following is an illustration of data terminal equipment
connected to an external modem using connections defined by the
RS-232C interface standard:
Data
Terminal
Equipment
Communications
Line
,~'""==-----
/
,
,,
/
/
/
/
/
""
,,.,
........
Adapter """ Cable Conforming
,,"
To RS·232C Standards
/
"
"
.".",,'"
,
_ EIAICCITT
/-----1' Line Number
r- Request to Send
00-®00--
I-
Clear to Send
~ CB/l06
I-
Data Set Ready
.
Data Terminal Ready
-
Protective Ground
-
Signal Ground
r- Transmitted Data
I-
Data
Terminal
Equip·
ment
rr-
Received Data
Connect Data Set to Line
~
20
~
- Received Line Signal Detector
8
"
Telephone Co.
'"
Lead Number r - - - " - ,
AA/101
AB/102
BAl103
BB/104
CAl105
CC/107
CD/108.2
Modem
**/108.1
CF/109
- Speed Select - - - - - - - {
- Transmit Signal Element Timing~ DB/114
_ Receive Signal Element Timing ~ 00/115
@- **/116
@-- DE/125
- Select Standby
I- Ring
Indicator
~
....Jr- Test
L -_ _
**/***
I
External Modem Cable Connector
1312111098
765
4
321
0000000000000)
\ 000000000000
+
252423222120191817161514
L ___
I
Dat~ Terminal ___ _
EqUipment
(MOdem)DCE
Data Communications--.J
EqUiPment-I
Pin Number
*Not used when business machine clocking is used.
**Not standardized by EIA (Electronics Industry Association).
*** Not standardized by CCITT
8-4
Communications
Establishing a Communications Link
The following bar graphs represent normal timing sequences of
operation during the establishment of communication for both
switched (dial-up) and nonswitched (direct line) networks.
Switched Timing Sequence
Data Terminal Ready
Data Set Ready
Request to Send
Clear to Send
Transmitted Data
Nonswitched Timing Sequence
Data Terminal Ready
Data Set Ready
J
Request to Send
Clear to Send
Transmitted Data
The following examples show how a link is established on a
nonswitched point-to-point line, a nonswitched multipoint line,
and a switched point-to-point line.
Communications
8-5
Establishing a Link on a Nonswitched Point-to-Point Line
QO
I
~
n
Q
~
s.
f')
~
Q'.
1.
The terminals at both locations activate the 'data terminal ready' lines
a
and
II·
II
Normally the 'data set ready' lines
and
from the modems are
active whenever the modems are powered on.
3.
Terminal A activates the 'request to send' line
which causes the
modem at terminal A to generate a carrier signal.
4.
Modem B detects the carrier, and activates the 'received line signal
detector' line (sometimes called data carrier detect)
Modem B
also activates the 'receiver signal element timing' line (sometimes
called receive clock)
to send receive clock signals to the terminal.
Some modems activate the clock signals whenever the modem is
powered on.
'"
1m .
After a specified delay, modem A activates the 'clear to send' line
which indicates to terminal A that the modem is ready to transmit
data.
Modem B deactivates the 'received line Signal detector' line
and, if
necessary, deactivates the receive clock signals on the 'receiver
signal element timing' line
13.
Terminal B now becomes the transmitter to respond to the request
from terminal A. To transmit data, terminal B activates the 'request
to send' line
which causes modem B to transmit a carrier to
modem A.
II,
14.
Terminal A serializes the data to be transmitted (through the serdes)
and transmits the data one bit at a time (synchronized by the transmit
clock) onto the 'transmitted data' lineD to the modem.
7.
The modem modulates the carrier signal with the data and transmits it
to the modem B
8.
Modem B demodulates the data from the carrier signal and sends it to
terminal B on the 'received data' line
9.
Terminal B deserializes the data (through the serdes) using the
receive clock signals (on the 'receiver signal element timing' line)
from the modem.
II.
After terminal A completes its transmission, it deactivates the 'request
to send' line
which causes the modem to turn off the carrier and
deactivate the 'clear to send' line
II '
a.
Modem B begins a delay that is longer than the echo delay at modem
A before turning on the 'clear to send' line. The longer delay (called
request-to-send to clear-to-send delay) ensures that modem A is
ready to receive when terminal B begins transmitting data. After the
delay, modem B activates the 'clear to send' line
to indicate that
terminal B can begin transmitting its response.
II
15.
After the echo delay at modem A, modem A senses the carrier from
modem B (the carrier was activated in step 13 when terminal B
activated the 'request to send' line) and activates the 'received line
signal detector' lineD to terminal A.
16.
Modem A and terminal A are now ready to receive the response from
terminal B. Remember, the response was not transmitted until after
the request-to-send to clear-to-send delay at modem B (step 14).
lEI.
III
1m
III.
a'
6.
10.
12.
II '
III
5.
Terminal A and modem A now become receivers and wait for a
response from terminal B, indicating that all data has reached
terminal B. Modem A begins an echo delay (50 to 150 milliseconds) to
ensure that all echoes on the line have diminished before it begins
receiving. An echo is a reflection of the transmitted Signal. If the
transmitti ng modem changed to receive too soon, it cou Id receive a
reflection (echo) of the signal it just transmitted.
II
2.
8
11.
TerminalS
Terminal A
r;::======llII
ir-======::;-]II
II
II
Communications
Adapter
II
Ij
II
II
II
D
r -
II .
Data Terminal Ready
:C
Data Set Ready
I
Modem A
Supply
fJ
I
I
Power
I
Supply
I
__ -1
L_
I
__ -1
II
: ~ '----!-~~~~~~~---.-.j
:
II
I I
Clear to Send
II
L_J
II
--z-.-.'
)
(:
I
~_-l-=~:c~:~~:.::S;~n::.I:~:.:~:::rmS::.i~g",9n_a_1~
I
r
I
-------,
Demodulator
'- _______ J
,.------'
iii
II
II
~~~e~7~~t~~t~r fJ
II
("')
Q
~
Receiver ~ig.nal
Element Timing
S
..,
Echo
Delay
II
II
~
r-~;"--L--
,-----,
L_~'~_j--
~~~e~~ I
r-----,
r
-R-;C~v; ~
1~~u~slj-
I
D.
S '
-
I
Modem
:
C~~ _ - '
r-----IL
Transmit
I
1 01
Ie
I I I
Modem
~_C~~_J
--,
_Demodulator
_ _ _ _ _ _ - 'I
r
Data
:I
:I
:I
:I
II
II
-------,
L _ ~~ula~~ _ J
II
II
Clear to Send
I
I
I
I
I
lEI
III
II
'I
II
Transmitter Signal
Element Timing
II
II
II
II
II
II
Transmitted Data
-,
!§
l~F
II
II
~====
~======:J
8 NOll:J3S
I
:I
Element Timing
Request to Send
,t,
r~'J
l::
r-----,
, __
~
Carrier
Received Data
II
IC
0
: n
It
I r
10
I I
""",-~;;" II
II
II
I
I
II
II
:to
.....:a
Modem
L _ _ _ _ -.J
II
II
~ _C~c~ _ J II Received II
~.
~:t:smitted
I
r-~~-i
r
II
QC
I
Receive
Circuits
II
II
II
~
Data Set Ready
~~~~7~~t~~t~r II
,-----,
II
II
II
-, II
iii
II
II
r
I 0 I
§.
n
II
Communications
Adapter
Data Terminal Ready
0
II
II
..
II
r------,
r-P~w~r-l
I
II
II
II
Communicat' VII;:>
Line
Modem S
II
II
II
II
II
II
J II
II
II
:J
Establishing a Link on a Nonswitched Multipoint Line
QC
I
QC
1.
~
~
II .
2.
~.
0".
~
The control station serializes the address for the tributary or
secondary station (AA) and sends its address to the modem on the
'transmitted data' line
3.
Since the 'request to send' line and, therefore, the modem carrier, is
active continuously
the modem immediately modulates the
carrier with the address, and, thus, the address is transmitted to all
modems on the line.
All tributary modems, including the modem for station A, demodulate
the address and send it to their terminals on the 'received data'
line
Only station A responds to the address; the other stations ignore the
address and continue monitoring thei~ 'received data' line. To respond
to the poll, station A activates its 'request to send' line
which
causes the modem to begin transmitting a carrier signal.
m
5.
After a short delay to allow the control station modem to receive the
carrier, the tributary modem activates the 'clear to send' line
7.
When station A detects the active 'clear to send' line, it transmits its
response. (For this example, assume that station A has no data to
send; therefore, it transmits an EaT
8.
After transmitting the EaT, station A deactivates the 'request to send'
line
This causes the modem to deactivate the carrier and the
'clear to send' line
9.
When the modem at the control station (host) detects the absence of
the carrier, it deactivates the 'received line signal detector' line
10.
Tributary station A is now in receive mode waiting for the next poll or
select transmission from the control station.
D'
iii.
4.
6.
The control station's modem receives the carrier and activates the
'received line signal detector' line
and the 'receiver signal element
timing' line
(to send clock Signals to the control station). Some
modems activate the clock signals as soon as they are powered on.
II
D
fJ .
Ill.)
m.
fJ .
II.
Tributary or Secondary Station A
Host
rr======:;-]
I
II
I
I
Communications
Adapter
II
I
Ready'
I
10
In I
I
Data Set Ready1
II
Clear to Send 1
II
II
II
II
II
II
r
_l:
: Transmit
~:
I
L ___
Element Timing1
AA
r
}.J
I
10
Modem
Clock
I
Transmitted Data
I
t
~
§.
~
ct.
~
ClC
I
\C
I
I
I
Il
Element Timing1
1
_dl
:::::: e :
I
LfJ
--, S
I
II
II
II
II
II
II
II
1
Rece;ve,S;gnal
Modem'"
- - - - - --,
r--.--'"
r-----,
)-':.-:'~T
Modem I
IL ____
Clock ....JI
IL
--,
_Demodulator
_____
......JI
iii
I
I I
I
L_J
0
tSI
I
o I
r-'
, I
a I
g
e
I
I
I
I
II
r----' : e
I
~e-:---I-";LIT':~;! l~J
r----..,
I
II
II
II
Request to Send
B
T,ansm;tte,ILnal
: i~
Element Timing
Modem
[_~~~~~=~
EOT
II
Clear to Send
II
Received Data
~1
II
:
II
II
::
Transmitted Oata
II
II
L.:-=======.1
I
Received Oata
II
t
L~e~e~~j r O'
.------
I 01
:1'1
t:
Element Timingl
I
I Receiver
all
II
Receiver Signal
r
f
Oetecton
1
I Carner
Detector
I I
_SI
:::::: e I
_,I
___
1
!.
+----I-L R::v~r_J
r-'
1 C:
'1 n I
Received Line Signa
L:~c~_J
J 0 :
.... r...J
Received Line Signal
II
Data Set Ready 1
I __
Demodulator
L
_ _ _ _ _ ...JI-t-~.-----+--~
1111
AA
~:
Communications
Adapter
Data Terminal
Ready'
,I
r-----
r
II
n
AA
I
I I I I
Iial
_ _ _ _ ...J
I
I
II
M'
I
Id I
r------, I u I
L
T
I
I
=
Power
On
L-
----,
Carrier
Ia I
II.._J
y I
Transmitter Signal
I
I
I
_~~~~J
r----'
I
r-----,
I
r,
: I
liB
Li
r;:==-=-=-==ll
II
II
Modem
.J
.--'
~
Request to Send 1•
L_J
Power
On
I
:t
1'1
10 I
Communications
r----..,
Data Terminal
r-'
: C
Ii
Host Modem
Terminal
1.AA
d
L,.~
I
I
I
_J II
II
II
t.=======~
lThese lines are active continuously.
B NOI1:l3S
Establishing a Link on a Switched Point-to-Point Line
QC
....
Q
I
~
0
§
§.
1.
2.
When the terminal A operator lifts the telephone handset, the 'switch
hook' line from the coupler is activated
3.
Modem A detects the 'switch hook' line and activates the 'off hook'
line. ' which causes the coupler to connect the telephone set to
the line and activate the 'coupler cut-through' line
to the modem.
f')
....
S·
$1:1
=
'11
Terminal A is in communications mode; therefore, the 'data terminal
ready' line. is active. Terminal B is in communication mode waiting
for a call from terminal A.
4.
8.
The autoanswer circuits in modem B activate the 'off hook'iine to the
coupler
9.
The coupler connects modem B to the communications line through
the 'data tip' and 'data ring' lines
and activates the 'coupler
cut-through' line
to the modem. Modem B then transmits an
answer tone to terminal A.
II
II.
II
Modem A activates the 'data modem ready' line II tothe coupler (the
The terminal A operator sets the exclusion key or talk/data switch to
the talk position to connect the handset to the communications line.
The operator then dials the terminal B number.
6.
When .the telephone at terminal B rings, the coupler activates the 'ring
indicate' line to modem B
Modem B indicates that the 'ring
indicate' line was activated by activating the 'ring indicator' line
to
terminal B.
7.
Ill.
lEI
m,
Terminal B activates the 'data terminal ready' line to modem B
which activates the autoanswer circuits in modem B. (The 'data
terminal ready' line might already be active in some terminals.)
II
10.
The terminal A operator hears the tone and sets the exclusion key or
talk/data switch to the data position (or performs an equivalent
operation) to connect modem A to the communications line through
the 'data tip' and 'data ring' lines
11.
The coupler at terminal A deactivates the 'switch hook' line
This
causes modem A to activate the 'data set ready' line
indicating to
terminal A that the modem is connected to the communications line.
II.
'data modem ready' line is on continuously in some modems).
5.
II.
II
II.
The sequence of the remaining steps to establish the data link is the
same as the sequence required on a nonswitched pOint-to-point line.
When the terminals have completed their transmission,they both
deactivate the 'data terminal ready' line to disconnect the modems
from the line.
Terminal B
Terminal A
r;::======~
II
Communications
Adapter
II
II
r-,
II
II
III
I
III
II'
II
II
II
'C
I0 I
In
I t I
I r
I0 I
I I
L_J
II
II
Modem A
II
II
r-----,
II
I
Data Terminal
Ready
Data Set
I
----r
Carrier
Generate
L
r -,
, 0 :
Ie I
I I
Ia I
IYI
II
II
II
II
L_~
II
II
II
II
II
~
II
II
§.
II
~
II
III
!')
~.
II
IlL
II
OCI
I
~
~
II
Id I
IU I
I I I
Ia I
I t I
r
I
r
I
1
I
SI
e I
r I
d I
e I
sI
L J
II
II
II
II
II
II
II
II
II
II
II
II
CBS
Coupler
Coupler
II
I
I
I
Off Hook IOH)
I
II
Off Hook
Coupler
II
Coupler
II
ICCD
Data Modem
ICCT)
II
Ready (DA)
Data Modem
r-'
r-l
Ready (DAJ
IRI
Ie I
I, I
I a I
Y I
sI
IRI
Ie I
" I
Ia I
Iy !
Is
I I
Ring
I
Data Tip (DT)
Data Ring (DR)
II
Cut-Through
Cut-Through
II
I
I
I
L_J
L_J
r------,
I I
Answer
Tone
IA II
I u I L_
It I
10 I
Ia I
In I
IsI
Iw I
Ie I
IOH)
Data
L-
r-'
ISH)
ISH)
Communications
Adapter
Modem B
Switch Hook
1
I
I
I
I
IM I
I 0 I
I
Transmit Data
II
II
r
Switch Hook
101
II
("}
I
I
CBS
r;:======llII
II
Data Terminal
Ready
Data Set Ready
r-'
Received Line
Signal Detector
I I
I0 I
Ie I
Im I
I0 I
Id I
I uI
I I I
Ia I
I t I
L_J
Indicate (Rl
Data Tip (DT)
III
1 0r
'
Data
Data Ring (DR)
_JI
r--,
I
CI
I E I I
:
~
a :
10 m I
I
P I
L __ ..J
r----,
r----'
Modem I
I
I
I
L~'oc~_J
Modem
Clock
L_
I
I
__-'
~
II
II
Transmit Clock
II
II
II
II
III
r-l
CI
I
n I
: t I
r I
I0 I
I I
I 0
I
L_J
II
II
II
.., II
'II
III
II
II
II
II
II
Received Data
II
II
II
II
II
II
II
II
II
II
r '
II
II
II
II
ILIS~
II
LlJ
i~~
Id
Ie
I s
JI
I
II
::J
!
L::
Ring Indic!Tar
Receive Clock
z 31 ~"~
II
I!I
- __ J
: r :
II!!
I
I
II
II
Communications
Line
8 NOIl:J:JS
Notes:
8-12
Communications
SECTION 9. IBM PERSONAL
COMPUTER COMPATIBILITY
Contents
Hardware Considerations •....••.•...•.•.•.••••••••••
System Board .................................
Fixed Disk Drive ...............................
Diskette Drive Compatibility .......... . . . . . . . . . . ..
Copy Protection ...............................
Bypassing BIOS .............................
Diskette Drive Controls .......................
Write Current Control ........................
9-3
9-3
9-5
9-5
9-5
9-6
9-6
9-6
Application Guidelines •.••.•.•.•.•.......••...•...•. 9-7'
High-Level Language Considerations ............... 9-7
Assembler Language Programming Considerations ..... 9-8
Multitasking Provisions ......................... 9-16
Interfaces ................................. 9-16
Classes ................................... 9-17
Time-Outs ................................ 9-19
Machine-Sensitive Code ........................ 9-19
Compatibility
9-1
Notes:
9-2
Compatibility
This section describes the differences among the members of the
IBM Personal Computer family. It also contains information
necessary to design hardware and programs that will be
compatible with all members of the IBM Personal Computer
family.
Hardware Considerations
To design compatible hardware or programs, you must consider
hardware differences among the IBM Personal Computers. The
following are hardware features of the IBM Personal Computer
AT that are not supported by all of the IBM Personal Computer
family.
System Board
The IBM Personal Computer AT system board uses an Intel
80286 Microprocessor. This microprocessor is compatible with
the 80287 Math Coprocessor used in the Personal Computer AT,
and is generally compatible with the Intel 8088 Microprocessor
used in other IBM Personal Computers.
Compatibility
9-3
The following table identifies the microprocessor and describes
the I/O channel used with each type of IBM Personal Computer.
System Name
System Unit
Microprocessor
I/O Channel Description
5 62-Pin
Personal Computer
8088
PCjr
8088
Personal Computer XT
8088
8 62-Pin
Portable Personal
Computer
8088
8 62-Pin
Personal Computer AT
80286
Not Compatible
2 62-pin
6 98-Pin (62 Pin + 36 Pin)
System Hardware Identification Chart
The faster processing capability of the 80286, compared to the
8088, creates special programming considerations, which are
discussed later in this section under "Application Guidelines."
Some adapters use a 36-pin connector in addition to the 62-pin
connector. Adapters designed to use the 36-pin connectors are
not compatible with all members of the IBM Personal Computer
family. Refer to the "System to Adapter Compatibility Chart" in
the Technical Reference Options and Adapters manual, Volume 1,
to identify the adapters supported by each system. The IBM
Personal Computer AT does not support an expansion unit.
On the I/O channel:
•
The system clock signal should be used only for
synchronization and not for applications requiring a fixed
frequency.
•
The 14.31818-MHz oscillator is not synchronous with the
system clock.
•
The ALE signal is activated during DMA cycles.
•
The -lOW signal is not active during refresh cycles.
•
Pin B04 supports IRQ 9.
9-4
Compatibility
Fixed Disk Drive
Reading from and writing to this drive is initiated in the same way
as with other IBM Personal Computers; however, the Fixed Disk
and Diskette Drive Adapter may be addressed from different
BIOS locations.
Diskette Drive Compatibility
The following chart shows the read, write, and format capabilities
for each of the diskette drives used by IBM Personal Computers.
Diskette
Drive Name
160/18oK
Mode
320/36oK
Mode
1.2M Mode
5-1/4 In. Diskette Drive:
Type 1
Type 2
Type 3
Slimline Diskette Drive
Double Sided Diskette
Drive
High Capacity Diskette
Drive
R
R
R
R
R
WF
WF
WF
WF
WF
R W*
---
R
R
R
R
WF
WF
WF
WF
R W*
-----------
R WF
R-Read W-Write F-Format W*-If a diskette is formatted in
either 160/180K mode or 320/360K mode and written on by a
High Capacity Drive, that diskette may be read by only a
High Capacity Drive.
Diskette Drive Compatibility Chart
Note: Diskettes designed for the 1.2M mode may not be
used in either a 160/180K or a 320/360K diskette drive.
Copy Protection
The following methods of copy protection may not work on
systems using the High Capacity Diskette Drive:
•
Bypassing BIOS
Compatibility
9-5
•
Diskette drive controls
•
Write current control
Bypassing BIOS
Copy protection that tries to bypass the following BIOS routines
will not work on the High Capacity Diskette Drive:
Track Density: The High Capacity Diskette Drive records tracks
at a density of 96 TPI (tracks per inch). This drive has to
double-step in the 48 TPI mode, which is performed by BIOS.
Data Transfer Rate: BIOS selects the proper data transfer rate
for the media being used.
Disk
Base: Copy protection, which creates its own disk base
will not work on the High Capacity Diskette Drive.
Diskette Drive Controls
Copy protection that uses the following will not work on the High
Capacity Diskette Drive:
Rotational Speed: The time between two events on a diskette is
controlled by the Fixed Disk and Diskette Drive Adapter.
Access Time: Diskette BIOS routines must set the track-to-track
access time for the different types of media used on the IBM
Personal Computer AT.
Head Geometry: See "Diskette Drive Compatibility" on page
9-5
Diskette Change Signal: Copy protection may not be able to
reset this signal.
9-6
Compatibility
Write Current Control
Copy protection that uses write current control will not work
because the Fixed Disk and Diskette Drive Adapter selects the
proper write current for the media being used.
Application Guidelines
The following information should be used to develop application
programs for the IBM Personal Computer family.
High-Level Language Considerations
The IBM-supported languages of BASIC, FORTRAN, COBOL,
Pascal, and APL are the best choices for writing compatible
programs.
If a program uses specific features of the hardware, that program
may not be compatible with all IBM Personal Computers.
Specifically, the use of assembler language subroutines or
hardware-specific commands (In, Out, Peek, Poke, ... ) must
follow the assembler language rules (see "Assembler Language
Programming Considerations" on page 9-8 ).
Any program that requires precise timing information should
obtain it through a DOS or language interface; for example,
TIME$ in BASIC. If greater precision is required, the assembler
techniques in "Assembler Language Programming
Considerations" are available. The use of programming loops
may prevent a program from being compatible with other IBM
Personal Computers.
Compatibility
9-7
Assembler Language Programming
Considerations
The following OP codes work differently on systems using the
80286 microprocessor than they do on systems using the 8088
microprocessor.
•
If the system microprocessor executes a POPF instruction in
either the real or the virtual address mode with CPL=:;;IOPL,
then a pending maskable interrupt (the INTR pin active) may
be improperly recognized after executing the POPF
instruction even if maskable interrupts were disabled before
the POPF instruction and the value popped had IF=O. If the
interrupt is improperly recognized, the interrupt is still
correctly executed. This errata has no effect when interrupts
are enabled in either real or virtual address mode. This errata
has no effect in the virtual address mode when CPL>IOPL.
The POPF instruction may be simulated with the following
code macro:
•
POPFF
Macro
EB 01
CF
OE
E8 FB FF
JMP $+3
IRET
PUSH CS
CALL $-2
use POPFF instead of POPF
simulate popping flags
using IRET
jump around IRET
POP CS. I p. flags
CALL within segment
program will continue here
PUSHSP
80286 microprocessor pushes the current stack pointer.
8088 microprocessor pushes the new stack pointer.
•
Single step interrupt (when TF= 1) on the interrupt
instruction (OP code hex CC,CD):
80286 microprocessor does not interrupt on the INT
instruction.
9-8
Compatibility
8088 microprocessor does interrupt on the INT
instruction.
•
The divide error exception (interrupt 0):
80286 microprocessor pushes the eS:IP of the
instruction, causing the exception.
8088 microprocessor pushes the eS:IP following the
instruction, causing the exception.
•
Shift counts are masked to five bits. Shift counts greater
than 31 are treated mod 32. For example, a shift count of
36, shifts the operand four places.
The following describes anomalies which may occur in systems
which contain 80286 processors with 1983 and 1984 date codes
(S40172,S54036,S40093,S54012).
In protected mode, the contents of the ex register may be
unexpectedly altered under the following conditions:
Note: The value in parenthesis indicates the type of error code
pushed onto the exception handler's stack.
Exception #NPO = Exception #11 = Not-present Fault
Exception #880 = Exception #12 = 8tack Fault
Exception #GPO = Exception #13 = General Protection Fault
•
Exception #GP(O) from attempted access to data segment or
extra segment when the corresponding segment register holds
a null selector.
•
Exception #GP(O) from attempted data read from code
segment when code segment has the "execute only"
attribute.
•
Exception #GP(O) from attempted write to code segment
(code segments are not writable in protected mode), or to
data segment of extra segment if the data or extra segment
has the read only attribute.
Compatibility
9-9
•
Exception #GP(O) from attempted load of a selector
referencing the local descriptor table into CS, DS, ES or SS,
when the LDT is not present.
•
Exception #GP(O) from attempted input or output
instruction when CPL > IOPL.
•
Exception #GP(selector) from attempted access to a
descriptor is GDT, LDT, or IDT, beyond the defined limit of
the descriptor table.
•
Exception #GP(O) from attempted read or write (except for
"PUSH" onto stack) beyond the defined limit of segment.
•
Exception #SS(O) from attempted "PUSH" below the
defined limit of the stack segment.
Restarting applications which generate the above exceptions may
result in errors.
In the protected mode, when any of the null selector values
(OOOOH, 0001H, 0002H, 0003H) are loaded into the DS or ES
registers via a MOV or POP instruction or a task switch, the
80286 always loads the null selector OOOOH into the
corresponding register.
If a coprocessor (80287) operand is read from an "executable and
readable" and conforming (ERC) code segment, and the
coprocessor operand is sufficiently near the segment's limit that
the second or subsequent byte lies outside the limit, no protection
exception #9 will be generated.
The following correctly describes the operation of all 80286 parts:
•
Instructions longer than 10 bytes (instructions using multiple
redundant prefixes) generate exception #13 (General
Purpose Exception) in both the real and protected modes.
•
If the second operand of an ARPL instruction is a null
selector, the instruction generates an exception #13.
Assembler language programs should perform all I/O operations
through ROM BIOS or DOS function calls.
9-10
Compatibility
•
Program interrupts are used for access to these functions.
This practice removes the absolute addressing from the
program. Only the interrupt number is required.
•
The coprocessor detects six different exception conditions
that can occur during instruction execution. If the
appropriate exception mask within the coprocessor is not set,
the coprocessor sets its error signal. This error signal
generates a hardware interrupt (interrupt 13) and causes the
'busy' signal to the coprocessor to be held in the busy state.
The 'busy' signal may be cleared by an 8-bit I/O Write
command to address hex FO with DO through D7 equal to O.
The power-on-self-test code in the system ROM enables
hardware IRQ 13 and sets up its vector to point to a routine
in ROM. The ROM routine clears the 'busy' signal latch
and then transfers control to the address pointed to by the
NMI interrupt vector. This allows code written for any IBM
Personal Computer to work on an IBM Personal Computer
AT. The NMI interrupt handler should read the
coprocessor's status to determine if the NMI was caused by
the coprocessor. If the interrupt was not generated by the
coprocessor, control should be passed to the original NMI
interrupt handler.
•
Back to back I/O commands to the same I/O ports will not
permit enough recovery time for I/O chips. To ensure
enough time, a JMP SHORT $+2 must be inserted between
IN/OUT instructions to the same I/O chip.
Note: MOV AL,AH type instruction does not allow
enough recovery time. An example of the correct
procedure follows:
OUT
IO_ADD ,AL
JMP SHORT $+2
MOV
OUT
•
AL,AH
IO_ADD ,AL
In systems using the 80286 microprocessor, IRQ 9 is
redirected to INT hex OA (hardware IRQ 2). This insures
Compatibility
9-11
that hardware designed to use IRQ 2 will operate in the IBM
Personal Computer AT.
•
The system can mask hardware sensitivity. New devices can
change the ROM BIOS to accept the same programming
interface on the new device.
•
In cases where BIOS provides parameter tables, such as for
video or diskette, a program may substitute new parameter
values by building a new copy of the table and changing the
vector to point to that table. However, the program should
copy the current table, using the current vector, and then
modify those locations in the table that need to be changed.
In this way, the program will not inadvertently change any
values that should be left the same.
•
Disk Base consists of 11 parameters required for diskette
operation. They are pointed at by the data variable,
Disk Pointer, at absolute address 0:78. It is strongly
recommended that the values supplied in ROM be used. If it
becomes necessary to modify any of the parameters, build
another parameter block and modify the address in
Disk_Pointer to point to the new block.
The parameters were established to operate both the High
Capacity Diskette Drive and the Double Sided Diskette
Drive. Three of the parameters in this table are under
control of BIOS in the following situations.
The Gap Length Parameter is no longer retrieved from
the parameter block.
The gap length used during diskette read, write, and
verify operations is derived from within diskette BIOS.
The gap length for format operations is still obtained
from the parameter block.
Special considerations are required for formatting operations.
See the prolog of Diskette BIOS for the required details. If a
parameter block contains a head settle time parameter value
of 0 milliseconds, and a write operation is being performed,
at least 15 milliseconds of head settle time will be enforced
9-12
Compatibility
for a High Capacity Diskette Drive and 20 milliseconds will
be enforced for a Double Sided Diskette Drive. If a
parameter block contains a motor start wait parameter of less
than 1 second for a write or format operation of 625
milliseconds for a read or verify operation, Diskette BIOS
will enforce those times listed above.
•
The following procedure is used to determine the type of
media inserted in the High Capacity Diskette Drive:
1.
Read Track 0, Head 0, Sector 1 to allow diskette BIOS
to establish the media/drive combination. If this is
successful, continue with the next step.
2.
Read Track 0, Sector 15. If an error occurs, a double
sided diskette is in the drive.
Note: Refer to the DOS Technical Reference
manual for the File Allocation Table (FAT)
parameters for single- and double-sided
diskettes.
If a successful read occurs, a high capacity diskette is in
the drive.
3.
If Step 1 fails, issue the reset function (AH=O) to
diskette BIOS and retry. If a successful read cannot be
done, the media needs to be formatted or is defective.
ROM BIOS and DOS do not provide for all functions. The
following are the allowable I/O operations with which IBM will
maintain compatibility in future systems.
•
Control of the sound, using port hex 61, and the sound
channel of the timer/counter. A program can control
timer/counter channels 0 and 2, ports hex 40,42, and 43. A
program must not change the value in port hex 41, because
this port controls the dynamic-memory refresh. Channel 0
provides the time-of-day interrupt, and can also be used for
timing short intervals. Channel 2 of the timer/counter is the
output for the speaker and cassette ports. This channel may
also be used for timing short intervals, although it cannot
interrupt at the end of the period.
Compatibility
9-13
•
Control of the Game Control Adapter, port hex 201
Note: Programs should use the timer for delay on the
paddle input rather than a program loop.
•
Interrupt Mask Register (IMR), port hex 21, can be used to
selectively mask and unmask the hardware features.
The following information pertains to absolute memory locations.
•
Interrupt Vectors Segment (hex O)--A program may change
these to point at different processing routines. When an
interrupt vector is modified, the original value should be
retained. If the interrupt, either hardware or program, is not
directed toward this device handler, the request should be
passed to the next item in the list.
•
Video Display Buffers (hex BOOOO and B8000)-- For each
mode of operation defined in the video display BIOS, the
memory map will remain the same. For example, the bit map
for the 320 x 200 medium-resolution graphics mode of the
Color/Graphics Monitor adapter will be retained on any
future adapter that supports that mode. If the bit map is
modified, a different mode number will be used.
•
ROM BIOS Data Area (hex 40:0)--Any variables in this area
will retain their current definition, whenever it is reasonable
to do so. IBM may use these data areas for other purposes
when the variable no longer has meaning in the system. In
general, ROM BIOS data variables should be read or
modified through BIOS calls whenever possible, and not with
direct access to the variable.
A program that requires timing information should use either the
time-of-day clock or the timing channels of the timer/counter.
The input frequency to the timer will be maintained at 1.19 MHz,
providing a constant time reference. Program loops should be
avoided.
Programs that use copy protection schemes should use the ROM
BIOS diskette calls to read and verify the diskette and should not
be timer dependent. Any method can be used to create the
diskette, although manufacturing capability should be considered.
9-14
Compatibility
The verifying program can look at the diskette controller's status
bytes in the ROM BIOS data area for additional information
about embedded errors. More information about copy protection
may be found on page 9-5 under" Copy Protection" .
Any DOS program must be relocatable and insensitive to the size
of DOS or its own load addresses. A program's memory
requirement should be identified and contiguous with the load
module. A program should not assume that all of memory is
available to it.
There are several 80286 instructions that, when executed, lock
out external bus signals. DMA requests are not honored during
the execution of these instructions. Consecutive instructions of
this type prevent DMA activity from the start of the first
instruction to the end of the last instruction. To allow for
necessary DMA cycles, as required by the diskette controller in a
multitasking system, multiple lock-out instructions must be
seperated by JMP SHORT $+2.
Compatibility
9-15
Multitasking Provisions
The IBM Personal Computer AT BIOS contains a feature to
assist multitasking implementation. "Hooks" are provided for a
multitasking dispatcher. Whenever a busy (wait) loop occurs in
the BIOS, a hook is provided for the program to break out of the
loop. Also, whenever BIOS services an interrupt, a corresponding
wait loop is exited, and another hook is provided. Thus a program
may be written that employs the bulk of the device driver code.
The following is valid only in the microprocessor's real address
mode and must be taken by the code to allow this support.
The program is responsible for the serialization of access to
the device driver. The BIOS code is not reentrant.
The program is responsible for matching corresponding wait
and post calls.
Interfaces
There are four interfaces to be used by the multitasking
dispatcher:
Startup
First, the startup code hooks interrupt hex 15. The dispatcher is
responsible to check for function codes of AH= hex 90 or 91.
The "Wait" and "Post" sections describe these codes. The
dispatcher must pass all other functions to the previous user of
interrupt hex 15. This can be done by a JMP or a CALL. If the
function code is hex 90 or 91, the dispatcher should do the
appropriate processing and return by the IRET instruction.
Serialization
It is up to the multitasking system to ensure that the device driver
code is used serially. Multiple entries into the code can result in
serious errors.
9-16
Compatibility
Wait (Busy)
Whenever the BIOS is about to enter a busy loop, it first issues an
interrupt hex 15 with a function code of hex 90 in AH. This
signals a wait condition. At this point, the dispatcher should save
the task status and dispatch another task. This allows overlapped
execution of tasks when the hardware is busy. The following is an
outline of the code that has been added to the BIOS to perform
this function.
MOV AX, 90XXH
INT 15H
JC TIMEOUT
NORMAL TIMEOUT LOGIC
wait code in AH and
type code in AL
issue call
optional: for time-out or
if carry is set, time-out
occurred
normal time-out
Post (Interrupt)
Whenever the BIOS has set an interrupt flag for a corresponding
busy loop, an interrupt 15 occurs with a function code of hex 91
in AH. This signals a post condition. At this point, the
dispatcher should set the task status to "ready to run" and return
to the interrupt routine. The following is an outline of the code
added to BIOS that performs this function.
MOV AX, 91XXH
INT 15H
post code AH and
type code AL
issue call
Classes
The following types of wait loops are supported:
•
The class for hex 0 to 7F is serially reusable. This means that
for the devices that use these codes, access to the BIOS must
be restricted to only one task at a time.
Compatibility
9-17
•
The class for hex 80 to BF is reentrant. There is no
restriction on the number of tasks that may access the device.
•
The class for hex CO to FF is non-interrupt. There is no
corresponding interrupt for the wait loop. Therefore, it is the
responsibility of the dispatcher to determine what satisfies
this condition to exit the loop.
Function Code Classes
Type Code (AL)
Description
00H->7FH
Serially reusable devices; operating system
must serialize access
80H->OBFH
Reentrant devices; ES:BX is used to
distinguish different calls (multiple I/O
calls are allowed simultaneously)
OCOH->OFH
Wait only calls; there is no complementary
POST for these waits--these are time-out
only. Times are function-number
dependent.
Function Code Assignments
The following are specific assignments for the IBM Personal
Computer AT BIOS. Times are approximate. They are grouped
according to the classes described under "Function Code
Classes" .
Type Code (AL)
Time-out
Description
OOH
yes (6 second)
fixed disk
OlH
yes (2 second)
diskette
02H
no
keyboard
OFDH
yes (1 second-write) diskette motor start
9-18
Compatibility
(625 ms-read)
yes (18 second)
OFEH
printer
The asynchronous support has been omitted. The Serial/Parallel
Adapter will generate interrupts, but BIOS does not support it in
the interrupt mode. Therefore, the support should be included in
the multitasking system code if that device is to be supported.
Time-Outs
To support time-outs properly, the multitasking dispatcher must
be aware of time. If a device enters a busy loop, it generally
should remain there for a specific amount of time before
indicating an error. The dispatcher should return to the BIOS
wait loop with the carry bit set if a time-out occurrs.
Machine-Sensitive Code
Programs may select machine specific features, but they must test
for specific machine type. Location of the specific machine
identification codes can be found through interrupt 15 function
code AH (See I Configuration Parameters I iIi BIOS Listing). The
code is two bytes. The first byte shows the machine type and the
second byte shows the series type. They are as follows:
First
Byte
Second
Byte
FF
FE
FE
FD
FC
00
00
00
00
00
Machine Identification
IBM
IBM
IBM
IBM
IBM
Personal
Personal
Portable
PCjr
Personal
Computer
Computer XT
Personal COmputer
Computer AT
Machine Identification Code
IBM will define methods for uniquely determining the specific
machine type or I/O feature for any new device.
Compatibility
9-19
Notes:
9-20
Compatability
Glossary
This glossary includes definitions developed by the American
National Standards Institute (ANSI) and the International
Organization for Standardization (ISO). This material is
reproduced from the American National Dictionary for Information
Processing, copyright 1977 by the Computer and Business
Equipment Manufacturers Association, copies of which may be
purchased from the American National Standards Institute, 1430
Broadway, New York, New York 10018.
fL. Prefix micro; 0.000001.
fLS. Microsecond; 0.000 001 second.
A.
Ampere.
ac.
Alternating current.
accumulator.
formed.
A register in which the result of an operation is
active high. Designates a signal that has to go high to produce an
effect. Synonymous with positive true.
active low. Designates a signal that has to go low to produce an
effect. Synonymous with negative true.
adapter. An auxiliary device or unit used to extend the operation
of another system.
Glossary-l
address bus. One or more conductors used to carry the
binary-coded address from the processor throughout the rest of
the system.
algorithm. A finite set of well-defined rules for the solution of a
problem in a finite number of steps.
all points addressable (APA).
A mode in which all points of a
displayable image can be controlled by the user.
alphameric.
Synonym for alphanumeric.
alphanumeric (A/N). Pertaining to a character set that contains
letters, digits, and usually other characters, such as punctuation
marks. Synonymous with alphameric.
alternating current (ac).
direction of flow.
A current that periodically reverses its
American National Standard Code for Information Interchange
(ASCII). The standard code, using a coded character set
consisting of 7-bit coded characters (8 bits including parity
check), used for information exchange between data processing
systems, data communication systems, and associated equipment.
The ASCII set consists of control characters and graphic
characters.
ampere (A).
A/N.
The basic unit of electric current.
Alphanumeric
analog. (1) Pertaining to data in the form of continuously
variable physical quantities. (2) Contrast with digital.
AND. A logic operator having the property that if P is a
statement, Q is a statement, R is a statement, ... , then the AND of
P, Q, R, .. .is true if all statements are true, false if any statement is
false.
Glossary-2
AND gate.
are 1.
A logic gate in which the output is 1 only if all inputs
AND operation. The boolean operation whose result has the
boolean value 1, if and only if, each operand has the boolean
value 1. Synonymous with conjunction.
APA.
All points addressable.
ASCII. American National Standard Code for Information
Interchange.
assemble. To translate a program expressed in an assembler
language into a computer language.
assembler.
A computer program used to assemble.
assembler language. A computer-oriented language whose
instructions are usually in one-to-one correspondence with
computer instructions.
asynchronous transmission. (1) Transmission in which the time
of occurrence of the start of each character, or block of
characters, is arbitrary; once started, the time of occurrence of
each signal representing a bit within a character, or block, has the
same relationship to significant instants of a fixed time frame.
(2) Transmission in which each information character is
individually transmitted (usually timed by the use of start
elements and stop elements).
audio frequencies. Frequencies that can be heard by the human
ear (approximately 15 hertz to 20,000 hertz).
auxiliary storage. (1) A storage device that is not main storage.
(2) Data storage other than main storage; for example, storage on
magnetic disk. (3) Contrast with main storage.
BASIC.
Beginner's all-purpose symbolic instruction code.
Glossary-3
basic input/output system (BIOS). The feature of the IBM
Personal Computer that provides the level control of the major
I/O devices, and relieves the programmer from concern about
hardware device characteristics.
baud. (1) A unit of signaling speed equal to the number of
discrete conditions or signal events per second. For example, one
baud equals one bit per second in a train of binary signals,
one-half dot cycle per second in Morse code, and one 3-bit value
per second in a train of signals each of which can assume one of
eight different states. (2) In asynchronous transmission, the unit
of modulation rate corresponding to one unit of interval per
second; that is, if the duration of the unit interval is 20
milliseconds, the modulation rate is 50 baud.
BCC.
Block-check character.
beginner's aU-purpose symbolic instruction code
(BASIC). A programming language with a small repertoire of
commands and a simple syntax, primarily designed for numeric
applications.
binary. (1) Pertaining to a selection, choice, or condition that
has two possible values or states. (2) Pertaining to a fixed radix
numeration system having a radix of 2.
binary digit. (1) In binary notation, either of the characters 0
or 1. (2) Synonymous with bit.
binary notation. Any notation that uses two different characters,
usually the binary digits 0 and 1.
binary synchronous communications (BSC). A uniform
procedure, using a standardized set of control characters and
control character sequences for synchronous transmission of
binary-coded data between stations.
BIOS.
Basic input/output system.
Glossary-4
bit.
Synonym for binary digit
bits per second (bps). A unit of measurement representing the
number of discrete binary digits transmitted by a device in one
second.
block. (1) A string of records, a string of words, or a character
string formed for technical or logic reasons to be treated as an
entity. (2) A set of things, such as words, characters, or digits,
treated as a unit.
block-check character (BCC). In cyclic redundancy checking, a
character that is transmitted by the sender after each message
block and is compared with a block-check character computed by
the receiver to determine if the transmission was successful.
boolean operation. (1) Any operation in which each of the
operands and the result take one of two values. (2) An operation
that follows the rules of boolean algebra.
bootstrap. A technique or device designed to bring itself into a
desired state by means of its own action; for example, a machine
routine whose first few instructions are sufficient to bring the rest
of itself into the computer from an input device.
bps.
BSe.
Bits per second.
Binary synchronous communications.
buffer. (1) An area of storage that is temporarily reserved for
use in performing an input/output operation, into which data is
read or from which data is written. Synonymous with I/O area.
(2) A portion of storage for temporarily holding input or output
data.
bus. One or more conductors used for transmitting signals or
power.
byte. (1) A sequence of eight adjacent binary digits that are
operated upon as a unit. (2) A binary character operated upon as
a unit. (3) The representation of a character.
Glossary-5
C.
Celsius.
capacitor. An electronic circuit component that stores an
electric charge.
CAS.
Column address strobe.
cathode ray tube (CRT). A vacuum tube in which a stream of
electrons is projected onto a fluorescent screen producing a
luminous spot. The location of the spot can be controlled.
cathode ray tube display (CRT display). (1) A CRT used for
displaying data. For example, the electron beam can be controlled
to form alphanumeric data by use of a dot matrix.
(2) Synonymous with monitor.
CCITT. International Telegraph and Telephone Consultative
Committee.
Celsius (C).
A temperature scale. Contrast with Fahrenheit (F).
central processing unit (CPU).
Term for processing unit.
channel. A path along which signals can be sent; for example,
data channel, output channel.
character generator. (1) In computer graphics, a functional unit
that converts the coded representation of a graphic character into
the shape of the character for display. (2) In word processing,
the means within equipment for generating visual characters or
symbols from coded data.
character set. (1) A finite set of different characters upon which
agreement has been reached and that is considered complete for
some purpose. (2) A set of unique representations called
characters. (3) A defined collection of characters.
Glossary-6
characters per second (cps). A standard unit of measurement for
the speed at which a printer prints.
check key. A group of characters, derived from and appended to
a data item, that can be used to detect errors in the data item
during processing.
clipping. In computer graphics, removing parts of a display
image that lie outside a window.
closed circuit. A continuous unbroken circuit; that is, one in
which current can flow. Contrast with open circuit.
CMOS.
Complementary metal oxide semiconductor.
code. (1) A set of unambiguous rules specifying the manner in
which data may be represented in a discrete form. Synonymous
with coding scheme. (2) A set of items, such as abbreviations,
representing the members of another set. (3) To represent data
or a computer program in a symbolic form that can be accepted
by a data processor. (4) Loosely, one or more computer
programs, or part of a computer program.
coding scheme.
collector.
flows.
Synonym for code.
An element in a transistor toward which current
color cone. An arrangement of the visible colors on the surface
of a double-ended cone where lightness varies along the axis of
the cone, and hue varies around the circumference. Lightness
includes both the intensity and saturation of color.
column address strobe (CAS).
addresses in a memory chip.
A signal that latches the column
compile. (1) To translate a computer program expressed in a
problem-oriented language into a computer-oriented language.
(2) To prepare a machine-language program from a computer
program written in another programming language by making use
of the overall logic structure of the program, or generating more
Glossary-7
than one computer instruction for each symbolic statement, or
both, as well as performing the function of an assembler.
complement. A number that can be derived from a specified
number by subtracting it from a second specified number.
complementary metal oxide semiconductor (CMOS). A logic
circuit family that uses very little power. It works with a wide
range of power supply voltages.
computer. A functional unit that can perform substantial
computation, including numerous arithmetic operations or logic
operations, without human intervention during a run.
computer instruction code. A code used to represent the
instructions in an instruction set. Synonymous with machine
code.
computer program. A sequence of instructions suitable for
processing by a computer.
computer word. A word stored in one computer location and
capable of being treated as a unit.
configuration. (1) The arrangement of a computer system or
network as defined by the nature, number, and the chief
characteristics of its functional units. More specifically, the term
configuration may refer to a hardware configuration or a software
configuration. (2) The devices and programs that make up a
system, subsystem, or network.
conjunction.
contiguous.
adjacent.
Synonym for AND operation.
Touching or joining at the edge or boundary;
control character. A character whose occurrence in a particular
context initiates, modifies, or stops a control operation.
control operation. An action that affects the recording,
processing, transmission, or interpretation of data; for example,
starting or stopping a process, carriage return, font change,
rewind, and end of transmission.
Glossary-8
control storage.
A portion of storage that contains microcode.
coordinate space. In computer graphics, a system of Cartesian
coordinates in which an object is defined.
cps.
Characters per second.
cpu. Central processing unit.
CRe.
Cyclic redundancy check.
CRT.
Cathode ray tube.
CRT display.
CTS.
Cathode ray tube display.
Clear to send. Associated with modem control.
cursor. (1) In computer graphics, a movable marker that is used
to indicate position on a display. (2) A displayed symbol that acts
as a marker to help the user locate a point in text, in a system
command, or in storage. (3) A movable spot of light on the
screen of a display device, usually indicating where the next
character is to be entered, replaced, or deleted.
cyclic redundancy check (CRC). (1) A redundancy check in
which the check key is generated by a cyclic algorithm. (2) A
system of error checking performed at both the sending and
receiving station after a block-check character has been
accumulated.
cylinder. (1) The set of all tracks with the same nominal
distance from the axis about which the disk rotates. (2) The
tracks of a disk storage device that can be accessed without
repositioning the access mechanism.
daisy-chained cable. A type of cable that has two or more
connectors attached in series.
data. (1) A representation of facts, concepts, or instructions in a
formalized manner suitable for communication, interpretation, or
Glossary-9
processing by human or automatic means. (2) Any
representations, such as characters or analog quantities, to which
meaning is, or might be assigned.
data base. A collection of data that can be immediately accessed
and operated upon by a data processing system for a specific
purpose.
data processing system. A system that performs input,
processing, storage, output, and control functions to accomplish a
sequence of operations on data.
data transmission.
dB.
dBa.
dc.
Synonym for transmission.
Decibel.
Adjusted decibels.
Direct current.
debounce. (1) An electronic means of overcoming the
make/break bounce of switches to obtain one smooth change of
signal level. (2) The elimination of undesired signal variations
caused by mechanically generated signals from contacts.
decibel. (1) A unit that expresses the ratio of two power levels
on a logarithmic scale. (2) A unit for measuring relative power.
decoupling capacitor. A capacitor that provides a low impedance
path to ground to prevent common coupling between circuits.
Deutsche Industrie Norm (DIN). (1) German Industrial Norm.
(2) The committee that sets German dimension standards.
digit. (1) A graphic character that represents an integer; for
example, one of the characters 0 to 9. (2) A symbol that
represents one of the non-negative integers smaller than the radix.
For example, in decimal notation, a digit is one of the characters 0
to 9.
Glossary-tO
(1) Pertaining to data in the form of digits. (2) Contrast
digital.
with analog.
DIN.
Deutsche Industrie Norm.
DIN connector.
committee.
DIP.
One of the connectors specified by the DIN
Dual in-line package.
DIP switch. One of a set of small switches mounted in a dual
in-line package.
direct current (de).
A current that always flows in one direction.
direct memory access (DMA). A method of transferring data
between main storage and 110 devices that does not require
processor intervention.
disable.
To stop the operation of a circuit or device.
disabled. Pertaining to a state of a processing unit that prevents
the occurrence of certain types of interruptions. Synonymous with
masked.
disk.
Loosely, a magnetic disk.
diskette. A thin, flexible magnetic disk and a semirigid
protective jacket, in which the disk is permanently enclosed.
Synonymous with flexible disk.
diskette drive. A device for storing data on and retrieving data
from a diskette.
display. (1) A visual presentation of data. (2) A device for
visual presentation of information on any temporary character
imaging device. (3) To present data visually. (4) See cathode ray
tube display.
Glossary-11
display attribute. In computer graphics, a particular property that
is assigned to all or part of a display; for example, low intensity,
green color, blinking status.
display element. In computer graphics, a basic graphic element
that can be used to construct a display image; for example, a dot,
a line segment, a character.
display group. In computer graphics, a collection of display
elements that can be manipulated as a unit and that can be further
combined to form larger groups.
display image. In computer graphics, a collection of display
elements or display groups that are represented together at any
one time in a display space.
display space. In computer graphics, that portion of a display
surface available for a display image. The display space may be
all or part of a display surface.
display surface. In computer graphics, that medium on which
display images may appear; for example, the entire screen of a
cathode ray tube.
DMA.
Direct memory access.
dot matrix. (1) In computer graphics, a two-dimensional pattern
of dots used for constructing a display image. This type of matrix
can be used to represent characters by dots. (2) In word
processing, a pattern of dots used to form characters. This term
normally refers to a small section of a set of addressable points;
for example, a representation of characters by dots.
dot printer.
Synonym for matrix printer.
dot-matrix character generator. In computer graphics, a
character generator that generates character images composed of
dots.
drawing primitive. A group of commands that draw defined
geometric shapes.
Glossary-12
DSR.
Data set ready. Associated with modem control.
DTR. In the IBM Personal Computer, data terminal ready.
Associated with modem control.
dual in-line package (DIP). A widely used container for an
integrated circuit. DIPs have pins in two parallel rows. The pins
are spaced 1/10 inch apart. See also DIP switch.
duplex. (1) In data communication, pertaining to a simultaneous
two-way independent transmission in both directions. (2)
Contrast with half -duplex.
duty cycle. In the operation of a device, the ratio of on time to
idle time. Duty cycle is expressed as a decimal or percentage.
dynamic memory. RAM using transistors and capacitors as the
memory elements. This memory requires a refresh (recharge)
cycle every few milliseconds. Contrast with static memory.
EBCDIC.
ECC.
Extended binary-coded decimal interchange code.
Error checking and correction.
edge connector. A terminal block with a number of contacts
attached to the edge of a printed-circuit board to facilitate
plugging into a foundation circuit.
EIA.
Electronic Industries Association.
electromagnet. Any device that exhibits magnetism only while
an electric current flows through it.
enable.
To initiate the operation of a circuit or device.
end of block (EOB).
data.
A code that marks the end of a block of
Glossary-13
end of fIle (EOF). An internal label, immediately following the
last record of a file, signaling the end of that file. It may include
control totals for comparison with counts accumulated during
processing.
end-of-text (ETX).
terminate text.
A transmission control character used to
end-of-transmission (EOT). A transmission control character
used to indicate the conclusion of a transmission, which may have
included one or more texts and any associated message headings.
end-of-transmission-block (ETB). A transmission control
character used to indicate the end of a transmission block of data
when data is divided into such blocks for transmission purposes.
EOB.
End of block.
EOF.
End of file.
EOT.
End-of-transmission.
EPROM.
Erasable programmable read-only memory.
erasable programmable read-only memory (EPROM). A PROM
in which the user can erase old information and enter new
information.
error checking and correction (ECC). The detection and
correction of all single-bit errors, plus the detection of double-bit
and some multiple-bit errors.
ESC.
The escape character.
escape character (ESC). A code extension character used, in
some cases, with one or more succeeding characters to indicate by
some convention or agreement that the coded representations
following the character or the group of characters are to be
Glossary-l 4
interpreted according to a different code or according to a
different coded character set.
ETB.
End-of-transmission-block.
ETX.
End-of-text.
extended binary-coded decimal interchange code
(EBCDIC). A set of 256 characters, each represented by eight
bits.
F.
Fahrenheit.
Fahrenheit (F).
falling edge.
A temperature scale. Contrast with Celsius (C).
Synonym for negative-going edge.
FCC.
Federal Communications Commission.
fetch.
To locate and load a quantity of data from storage.
FF.
The form feed character.
field. (1) In a record, a specified area used for a particular
category of data. (2) In a data base, the smallest unit of data that
can be referred to.
field-programmable logic sequencer (FPLS). An integrated
circuit containing a programmable, read-only memory that
responds to external inputs and feedback of its own outputs.
FIFO (first-in-first out). A queuing technique in which the next
item to be retrieved is the item that has been in the queue for the
longest time.
Glossary-15
fixed disk drive. In the IBM Personal Computer, a unit
consisting of nonremovable magnetic disks, and a device for
storing data on and retrieving data from the disks.
flag. (1) Any of various types of indicators used for
identification. (2) A character that signals the occurrence of
some condition, such as the end of a word. (3) Deprecated term
for mark.
flexible disk.
Synonym for diskette.
flip-flop. A circuit or device containing active elements, capable
of assuming either one of two stable states at a given time.
font. A family or assortment of characters of a given size and
style; for example, 10 point Press Roman medium.
foreground. (1) In multiprogramming, the environment in which
high-priority programs are executed. (2) On a color display
screen, the characters as opposed to the background.
form feed. (1) Paper movement used to bring an assigned part
of a form to the printing position. (2) In word processing, a
function that advances the typing position to the same character
position on a predetermined line of the next form or page.
form feed character. A control character that causes the print or
display position to move to the next predetermined first line on
the next form, the next page, or the equivalent.
format.
FPLS.
The arrangement or layout of data on a data medium.
Field-programmable logic sequencer.
frame. (1) In SDLC, the vehicle for every command, every
response, and all information that is transmitted using SDLC
procedures. Each frame begins and ends with a flag. (2) In data
transmission, the sequence of contiguous bits bracketed by and
induding beginning and ending flag sequences.
Glossary-16
g.
Gram.
G. (1) Prefix giga; 1,000,000,000. (2) When referring to
computer storage capacity, 1,073,741,824. (1,073,741,824 = 2 to
the 30th power.)
gate. (1) A combinational logic circuit having one output
channel and one or more input channels, such that the output
channel state is completely determined by the input channel
states. (2) A signal that enables the passage of other signals
through a circuit.
Gb.
1,073,741,824 bytes.
general-purpose register. A register, usually explicitly
addressable within a set of registers, that can be used for different
purposes; for example, as an accumulator, as an index register, or
as a special handler of data.
giga (G).
Prefix 1,000,000,000.
gram (g).
A unit of weight (equivalent to 0.035 ounces).
graphic. A symbol produced by a process such as handwriting,
drawing, or printing.
graphic character. A character, other than a control character,
that is normally represented by a graphic.
half-duplex. (1) In data communication, pertaining to an
alternate, one way at a time, independent transmission. (2)
Contrast with duplex.
hardware. (1) Physical equipment used in data processing, as
opposed to programs, procedures, rules, and associated
documentation. (2) Contrast with software.
Glossary-17
head. A device that reads, writes, or erases data on a storage
medium; for example, a small electromagnet used to read, write,
or erase data on a magnetic disk.
hertz (Hz).
hex.
A unit of frequency equal to one cycle per second.
Common abbreviation for hexadecimal.
hexadecimal. (1) Pertaining to a selection, choice, or condition
that has 16 possible different values or states. These values or
states are usually symbolized by the ten digits 0 through 9 and the
six letters A through F. (2) Pertaining to a fixed radix
numeration system having a radix of 16.
high impedance state. A state in which the output of a device is
effectively isolated from the circuit.
highlighting. In computer graphics, emphasizing a given display
group by changing its attributes relative to other display groups in
the same display field.
high-order position. The leftmost position in a string of
characters. See also most-significant digit.
hither plane. In computer graphics, a plane that is perpendicular
to the line joining the viewing reference point and the view point
and that lies between these two points. Any part of an object
between the hither plane and the view point is not seen. See also
yon plane.
housekeeping. Operations or routines that do not contribute
directly to the solution of the problem but do contribute directly
to the operation of the computer.
Hz.
Hertz
image. A fully processed unit of operational data that is ready to
be transmitted to a remote unit; when loaded into control storage
in the remote unit, the image determines the operations of the
unit.
Glossary-1S
immediate instruction. An instruction that contains within itself
an operand for the operation specified, rather than an address of
the operand.
index register. A register whose contents may be used to modify
an operand address during the execution of computer instructions.
indicator. (1) A device that may be set into a prescribed state,
usually according to the result of a previous process or on the
occurrence of a specified condition in the equipment, and that
usually gives a visual or other indication of the existence of the
prescribed state, and that may in some cases be used to determine
the selection among alternative processes; for example, an
overflow indicator. (2) An item of data that may be interrogated
to determine whether a particular condition has been satisfied in
the execution of a computer program; for example, a switch
indicator, an overflow indicator.
inhibited. (1) Pertaining to a state of a processing unit in which
certain types of interruptions are not allowed to occur. (2)
Pertaining to the state in which a transmission control unit or an
audio response unit cannot accept incoming calls on a line.
initialize. To set counters, switches, addresses, or contents of
storage to 0 or other starting values at the beginning of, or at
prescribed points in, the operation of a computer routine.
input/output (I/O). (1) Pertaining to a device or to a channel
that may be involved in an input process, and, at a different time,
in an output process. In the English language, "input/output"
may be used in place of such terms as "input/output data,"
"input/ output signal," and "input/output terminals," when such
usage is clear in a given context. (2) Pertaining to a device whose
parts can be performing an input process and an output process at
the same time. (3) Pertaining to either input or output, or both.
instruction. In a programming language, a meaningful expression
that specifies one operation and identifies its operands, if any.
instruction set. The set of instructions of a computer, of a
programming language, or of the programming languages in a
programming system.
Glossary-19
intensity. In computer graphics, the amount of light emitted at a
display point
interface. A device that alters or converts actual electrical
signals between distinct devices, programs, or systems.
interleave. To arrange parts of one sequence of things or events
so that they alternate with parts of one or more other sequences
of the same nature and so that each sequence retains its identity.
interrupt. (1) A suspension of a process, such as the execution
of a computer program, caused by an event external to that
process, and performed in such a way that the process can be
resumed. (2) In a data transmission, to take an action at a
receiving station that causes the transmitting station to terminate
a transmission. (3) Synonymous with interruption.
I/O. Input/output.
I/O area. Synonym for buffer.
irrecoverable error. An error that makes recovery impossible
without the use of recovery techniques external to the computer
program or run.
joystick. In computer graphics, a lever that can pivot in all
directions and that is used as a locator device.
k.
Prefix kilo; 1000.
K. When referring to storage capacity, 1024. (1024 = 2 to the
10th power.)
Kb.
1024 bytes.
key lock. A device that deactivates the keyboard and locks the
cover on for security.
Glossary-20
kg.
kHz.
Kilogram; 1000 grams.
Kilohertz; 1000 hertz.
kilo (k).
Prefix 1000
kilogram (kg).
kilohertz (kHz).
1000 grams.
1000 hertz
latch. (1) A simple logic-circuit storage element. (2) A
feedback loop in sequential digital circuits used to maintain a
state.
least-significant digit.
position.
LED.
The rightmost digit. See also low-order
Light-emitting diode.
light-emitting diode (LED). A semiconductor device that gives
off visible or infrared light when activated.
load. In programming, to enter data into storage or working
registers.
look-up table (LUT). (1) A technique for mapping one set of
values into a larger set of values. (2) In computer graphics, a
table that assigns a color value (red, green, blue intensities) to a
color index.
low power Schottky TTL. A version (LS series) of TTL giving a
good compromise between low power and high speed. See also
transistor-transistor logic and Schottky TTL.
low-order position. The rightmost position in a string of
characters. See also least-significant digit.
luminance. The luminous intensity per unit projected area of a
given surface viewed from a given direction.
Glossary-21
LUT.
m.
Look-up table.
(1) Prefix milli; 0.001. (2) Meter.
M. (1) Prefix mega; 1,000,000. (2) When referring to
computer storage capacity, 1,048,576. (1,048,576 = 2 to the
20th power.)
mAe
Milliampere; 0.001 ampere.
machine code. The machine language used for entering text and
program instructions onto the recording medium or into storage
and which is subsequently used for processing and printout.
machine language. (1) A language that is used directly by a
machine. (2) Deprecated term for computer instruction code.
magnetic disk. (1) A flat circular plate with a magnetizable
surface layer on which data can be stored by magnetic recording.
(2) See also diskette.
main storage. (1) Program-addressable storage from which
instructions and other data can be loaded directly into registers
for subsequent execution or processing. (2) Contrast with
auxiliary storage.
mark. A symbol or symbols that indicate the beginning or the
end of a field, of a word, of an item of data, or of a set of data
such as a file, a record, or a block.
mask. (1) A pattern of characters that is used to control the
retention or elimination of portions of another pattern of
characters. (2) To use a pattern of characters to control the
retention or elimination of portions of another pattern of
characters.
masked.
Synonym for disabled.
matrix. (1) A rectangular array of elements, arranged in rows
and columns, that may be manipulated according to the rules of
Glossary-22
matrix algebra. (2) In computers, a logic network in the form of
an array of input leads and output leads with logic elements
connected at some of their intersections.
matrix printer. A printer in which each character is represented
by a pattern of dots; for example, a stylus printer, a wire printer.
Synonymous with dot printer.
Mb.
1,048,576 bytes.
mega (M).
Prefix 1,000,000.
megahertz (MHz).
memory.
Term for main storage.
meter (m).
MFM.
MHz.
1,000,000 hertz.
A unit of length (equivalent to 39.37 inches).
Modified frequency modulation.
Megahertz; 1,000,000 hertz.
micro (p.). Prefix 0.000,001.
microcode. (1) One or more microinstructions. (2) A code,
representing the instructions of an instruction set, implemented in
a part of storage that is not program-addressable.
microinstruction. (1) An instruction of microcode. (2) A basic
or elementary machine instruction.
microprocessor. An integrated circuit that accepts coded
instructions for execution; the instructions may be entered,
integrated, or stored internally.
microsecond (p.s). 0.000,001 second.
miDi (m).
Prefix 0.001.
Glossary-23
milliampere (mA).
millisecond (ms).
0.001 ampere.
0.001 second.
mnemonic. A symbol chosen to assist the human memory; for
example, an abbreviation such as "mpy" for "multiply."
mode. (1) A method of operation; for example, the binary
mode, the interpretive mode, the alphanumeric mode. (2) The
most frequent value in the statistical sense.
modeling transformation. Operations on the coordinates of an
object (usually matrix multiplications) that cause the object to be
rotated about any axis, translated (moved without rotating),
and/ or scaled (changed in size along any or all dimensions). See
also viewing transformation.
modem (modulator-demodulator). A device that converts serial
(bit by bit) digital signals from a business machine (or data
communication equipment) to analog signals that are suitable for
transmission in a telephone network. The inverse function is also
performed by the modem on reception of analog signals.
modified frequency modulation (MFM). The process of varying
the amplitude and frequency of the 'write' signal. MFM pertains
to the number of bytes of storage that can be stored on the
recording media. The number of bytes is twice the number
contained in the same unit area of recording media at single
density.
modulation. The process by which some characteristic of one
wave (usually high frequency) is varied in accordance with
another wave or signal (usually low frequency). This technique is
used in modems to make business-machine signals compatible
with communication facilities.
modulation rate. The reciprocal of the measure of the shortest
nominal time interval between successive significant instants of
the modulated signal. If this measure is expressed in seconds, the
modulation rate is expressed in baud.
module. (1) A program unit that is discrete and identifiable with
respect to compiling, combining with other units, and loading.
Glossary-24
(2) A packaged functional hardware unit designed for use with
other components.
modulo check. A calculation performed on values entered into a
system. This calculation is designed to detect errors.
modulo-N check. A check in which an operand is divided by a
number N (the modulus) to generate a remainder (check digit)
that is retained with the operand. For example, in a modulo-7
check, the remainder will be 0, 1,2,3,4,5, or 6. The operand is
later checked by again dividing it by the modulus; if the
remainder is not equal to the check digit, an error is indicated.
modulus. In a modulo-N check, the number by which the
operand is divided.
monitor.
Synonym for cathode ray tube display (CRT display).
most-significant digit.
high-order position.
ms.
The leftmost (non-zero) digit. See also
Millisecond; 0.001 second.
multiplexer. A device capable of interleaving the events of two
or more activities, or capable of distributing the events of an
interleaved sequence to the respective activities.
multiprogramming. (1) Pertaining to the concurrent execution of
two or more computer programs by a computer. (2) A mode of
operation that provides for the interleaved execution of two or
more computer programs by a single processor.
n.
Prefix nano; 0.000,000,001.
NAND. A logic operator having the property that if P is a
statement, Q is a statement, R is a statement, ... , then the NAND
of P, Q ,R, ... is true if at least one statement is false, false if all
statements are true.
NAND gate.
are 1.
A gate in which the output is 0 only if all inputs
Glossary-25
nano (n).
Prefix 0.000,000,001.
nanosecond (ns).
negative true.
0.000,000,001 second.
Synonym for active low.
negative-going edge. The edge of a pulse or signal changing in a
negative direction. Synonymous with falling edge.
non-retum-to-zero change-on-ones recording (NRZI). A
transmission encoding method in which the data terminal
equipment changes the signal to the opposite state to send a
binary 1 and leaves it in the same state to send a binary o.
non-return-to-zero (inverted) recording (NRZI). Deprecated
term for non-return-to-zero change-on-ones recording.
NOR. A logic operator having the property that if P is a
statement, Q is a statement, R is a statement, ... , then the NOR of
P, Q, R, ... is true if all statements are false, false if at least one
statement is true.
NOR gate.
input is 1.
A gate in which the output is 0 only if at least one
NOT. A logical operator having the property that if P is a
statement, then the NOT of P is true if P is false, false if P is true.
NRZI.
ns.
Non-return-to-zero change-on-ones recording.
Nanosecond; 0.000,000,001 second.
NUL.
The null character.
null character (NUL). A control character that is used to
accomplish media-fill or time-fill, and that may be inserted into or
removed from, a sequence of characters without affecting the
meaning of the sequence; however, the control of the equipment
or the format may be affected by this character.
Glossary-26
odd-even check.
Synonym for parity check.
offline. Pertaining to the operation of a functional unit without
the continual control of a computer.
one-shot. A circuit that delivers one output pulse of desired
duration for each input (trigger) pulse.
open circuit. (1) A discontinuous circuit; that is, one that is
broken at one or more points and, consequently, cannot conduct
current. Contrast with closed circuit. (2) Pertaining to a no-load
condition; for example, the open-circuit voltage of a power
supply.
open collector. A switching transistor without an internal
connection between its collector and the voltage supply. A
connection from the collector to the voltage supply is made
through an external (pull-up) resistor.
operand. ( 1) An entity to which an operation is applied.
(2) That which is operated upon. An operand is usually identified
by an address part of an instruction.
operating system. Software that controls the execution of
programs; an operating system may provide services such as
resource allocation, scheduling, input/output control, and data
management.
OR. A logic operator having the property that if P is a
statement, Q is a statement, R is a statement, ... , then the OR of P,
Q, R, .. .is true if at least one statement is true, false if all
statements are false.
OR gate. A gate in which the output is 1 only if at least one
input is 1.
output. Pertaining to a device, process, or channel involved in an
output process, or to the data or states involved in an output
process.
Glossary-27
output process. (1) The process that consists of the delivery of
data from a data processing system, or from any part of it.
(2) The return of information from a data processing system to
an end user, including the translation of data from a machine
language to a language that the end user can understand.
overcurrent.
A current of higher than specified strength.
overflow indicator. (1) An indicator that signifies when the last
line on a page has been printed or passed. (2) An indicator that is
set on if the result of an arithmetic operation exceeds the capacity
of the accumulator.
overrun. Loss of data because a receiving device is unable to
accept data at the rate it is transmitted.
overvoltage.
A voltage of higher than specified value.
parallel. (1) Pertaining to the concurrent or simultaneous
operation of two or more devices, or to the concurrent
performance of two or more activities. (2) Pertaining to the
concurrent or simultaneous occurrence of two or more related
activities in multiple devices or channels. (3) Pertaining to the
simultaneity of two or more processes. (4) Pertaining to the
simultaneous processing of the individual parts of a whole, such as
the bits of a character and the characters of a word, using
separate facilities for the various parts. (5) Contrast with serial.
parameter. (1) A variable that is given a constant value for a
specified application and that may denote the application. (2) A
name in a procedure that is used to refer to an argument passed to
that procedure.
parity bit. A binary digit appended to a group of binary digits to
make the sum of all the digits either always odd (odd parity) or
always even (even parity).
parity check. (1) A redundancy check that uses a parity bit.
(2) Synonymous with odd-even check.
PEL.
Picture element.
Glossary-28
personal computer. A small home or business computer that has
a processor and keyboard and that can be connected to a
television or some other monitor. An optional printer is usually
available.
phototransistor. A transistor whose switching action is
controlled by light shining on it.
picture element (PEL).
display.
The smallest displayable unit on a
polling. (1) Interrogation of devices for purposes such as to
avoid contention, to determine operational status, or to determine
readiness to send or receive data. (2) The process whereby
stations are invited, one at a time, to transmit.
port.
An access point for data entry or exit.
positive true.
Synonym for active high.
positive-going edge. The edge of a pulse or signal changing in a
positive direction. Synonymous with rising edge.
potentiometer. A variable resistor with three terminals, one at
each end and one on a slider (wiper).
power supply. A device that produces the power needed to
operate electronic equipment.
printed circuit. A pattern of conductors (corresponding to the
wiring of an electronic circuit) formed on a board of insulating
material.
printed-circuit board. A usually copper-clad plastic board used
to make a printed circuit.
priority. A rank assigned to a task that determines its
precedence in receiving system resources.
processing program. A program that performs such functions as
compiling, assembling, or translating for a particular programming
language.
Glossary-29
processing unit. A functional unit that consists of one or more
processors and all or part of internal storage.
processor. (1) In a computer, a functional unit that interprets
and executes instructions. (2) A functional unit, a part of another
unit such as a terminal or a processing unit, that interprets and
executes instructions. (3) Deprecated term for processing
program. (4) See microprocessor.
program. (1) A series of actions designed to achieve a certain
result. (2) A series of instructions telling the computer how to
handle a problem or task. (3) To design, write, and test computer
programs.
programmable read-only memory (PROM).
that can be programmed by the user.
A read-only memory
programming language. (1) An artificial language established for
expressing computer programs. (2) A set of characters and rules
with meanings assigned prior to their use, for writing computer
programs.
programming system. One or more programming languages and
the necessary software for using these languages with particular
automatic data-processing equipment.
PROM.
Programmable read-only memory.
propagation delay. (1) The time necessary for a signal to travel
from one point on a circuit to another. (2) The time delay
between a signal change at an input and the corresponding change
at an output.
protocol. (1) A specification for the format and relative timing
of information exchanged between communicating parties.
(2) The set of rules governing the operation of functional units of
a communication system that must be followed if communication
is to be achieved.
Glossary-30
pulse. A variation in the value of a quantity, short in relation to
the time schedule of interest, the final value being the same as the
initial value.
radio frequency (RF). An ac frequency that is higher than the
highest audio frequency. So called because of the application to
radio communication.
radix. (1) In a radix numeration system, the positive integer by
which the weight of the digit place is multiplied to obtain the
weight of the digit place with the next higher weight; for example,
in the decimal numeration system the radix of each digit place is
10. (2) Another term for base.
radix numeration system. A positional representation system in
which the ratio of the weight of anyone digit place to the weight
of the digit place with the next lower weight is a positive integer
(the radix). The permissible values of the character in any digit
place range from 0 to one less than the radix.
RAM.
Random access memory. Read/write memory.
random access memory (RAM).
RAS.
Read/write memory.
In the IBM Personal Computer, row address strobe.
raster. In computer graphics, a predetermined pattern of lines
that provides uniform coverage of a display space.
read. To acquire or interpret data from a storage device, from a
data medium, or from another source.
read-only memory (ROM). A storage device whose contents
cannot be modified. The memory is retained when power is
removed.
read/write memory. A storage device whose contents can be
modified. Also called RAM.
Glossary-31
recoverable error. An error condition that allows continued
execution of a program.
red-green-blue-intensity (RGBI). The description of a
direct-drive color monitor that accepts input signals of red, green,
blue, and intensity.
redundancy check. A check that depends on extra characters
attached to data for the detection of errors. See cyclic redundancy
check.
register. (1) A storage device, having a specified storage
capacity such as a bit, a byte, or a computer word, and usually
intended for a special purpose. (2) A storage device in which
specific data is stored.
retry. To resend the current block of data (from the last EOB or
ETB) a prescribed number of times, or until it is entered correctly
or accepted.
reverse video. A form of highlighting a character, field, or cursor
by reversing the color of the character, field, or cursor with its
background; for example, changing a red character on a black
background to a black character on a red background.
RF.
Radio frequency.
RF modulator. The device used to convert the composite video
signal to the antenna level input of a home TV.
RGBI.
Red-green-blue-intensity.
rising edge.
ROM.
Synonym for positive-going edge.
Read-only memory.
ROM/BIOS. The ROM resident basic input/output system,
which provides the level control of the major I/O devices in the
computer system.
Glossary-32
row address strobe (RAS).
in a memory chip.
A signal that latches the row address
RS-232C. A standard by the EIA for communication between
computers and external equipment.
RTS.
Request to send. Associated with modem control.
run. A single continuous performance of a computer program or
routine.
saturation. In computer graphics, the purity of a particular hue.
A color is said to be saturated when at least one primary color
(red, blue, or green) is completely absent.
scaling. In computer graphics, enlarging or reducing all or part
of a display image by multiplying the coordinates of the image by
a constant value.
schematic. The representation, usually in a drawing or diagram
form, of a logical or physical structure.
Schottky TTL. A version (S series) of TTL with faster switching
speed, but requiring more power. See also transistor-transistor
logic and low power Schottky TTL.
SDLC.
Synchronous Data Link Control.
sector. That part of a track or band on a magnetic drum, a
magnetic disk, or a disk pack that can be accessed by the
magnetic heads in the course of a predetermined rotational
displacement of the particular device.
SERDES.
Serializer/deserializer.
Glossary-33
serial. (1) Pertaining to the sequential performance of two or
more activities in a single device. In English, the modifiers serial
and parallel usually refer to devices, as opposed to sequential and
consecutive, which refer to processes. (2) Pertaining to the
sequential or consecutive occurrence of two or more related
activities in a single device or channel. (3) Pertaining to the
sequentiai processing of the individual parts of a whole, such as
the bits of a character or the characters of a word, using the same
facilities for successive parts. (4) Contrast with parallel.
serializer/deserializer (SERDES). A device that serializes output
from, and deserializes input to, a business machine.
setup. (1) In a computer that consists of an assembly of
individual computing units, the arrangement of interconnections
between the units, and the adjustments needed for the computer
to operate. (2) The preparation of a computing system to
perform a job or job step. Setup is usually performed by an
operator and often involves performing routine functions, such as
mounting tape reels. (3) The preparation of the system for
normal operation.
short circuit. A low-resistance path through which current flows,
rather than through a component or circuit.
signal.
A variation of a physical quantity, used to convey data.
sink.
A device or circuit into which current drains.
software. (1) Computer programs, procedures, and rules
concerned with the operation of a data processing system.
(2) Contrast with hardware.
source.
The origin of a signal or electrical energy.
square wave. An alternating or pulsating current or voltage
whose waveshape is square.
square wave generator. A signal generator delivering an output
signal having a square waveform.
SS.
Start-stop.
Glossary-34
start bit. (1) A signal to a receiving mechanism to get ready to
receive data or perform a function. (2) In a start-stop system, a
signal preceding a character or block that prepares the receiving
device for the reception of the code elements.
start-of-text (STX). A transmission control character that
precedes a text and may be used to terminate the message
heading.
start-stop system. A data transmission system in which each
character is preceded by a start bit and is followed by a stop bit.
start-stop (SS) transmission. (1) Asynchronous transmission
such that a group of signals representing a character is preceded
by a start bit and followed by a stop bit. (2) Asynchronous
transmission in which a group of bits is preceded by a start bit
that prepares the receiving mechanism for the reception and
registration of a character and is followed by at least one stop bit
that enables the receiving mechanism to come to an idle condition
pending the reception of the next character.
static memory. RAM using flip-flops as the memory elements.
Data is retained as long as power is applied to the flip-flops.
Contrast with dynamic memory.
stop bit. (1) A signal to a receiving mechanism to wait for the
next signal. (2) In a start-stop system, a signal following a
character or block that prepares the receiving device for the
reception of a subsequent character or block.
storage. (1) A storage device. (2) A device, or part of a device,
that can retain data. (3) The retention of data in a storage device.
(4) The placement of data into a storage device.
strobe. An instrument that emits adjustable-rate flashes of light.
Used to measure the speed of rotating or vibrating objects.
STX.
Start-of-text.
Glossary-35
symbol. (1) A conventional representation of a concept.
(2) A representation of something by reason of relationship,
association, or convention.
synchronization. The process of adjusting the corresponding
significant instants of two signals to obtain the desired phase
relationship between these instants.
Synchronous Data Link Control (SDLC). A protocol for
management of data transfer over a data link.
synchronous transmission. (1) Data transmission in which the
time of occurrence of each signal representing a bit is related to a
fixed time frame. (2) Data transmission in which the sending and
receiving devices are operating continuously at substantially the
same frequency and are maintained, by means of correction, in a
desired phase relationship.
syntax. (1) The relationship among characters or groups of
characters, independent of their meanings or the manner of their
interpretation and use. (2) The structure of expressions in a
language. (3) The rules governing the structure of a language.
(4) The relationships among symbols.
text. In ASCII and data communication, a sequence of
characters treated as an entity if preceded and terminated by one
STX and one ETX transmission control character, respectively.
time-out. (1) A parameter related to an enforced event designed
to occur at the conclusion of a predetermined elapsed time.
A time-out condition can be cancelled by the receipt of an
appropriate time-out cancellation signal. (2) A time interval
allotted for certain operations to occur; for example, response to
polling or addressing before system operation is interrupted and
must be restarted.
track. (1) The path or one of the set of paths, parallel to the
reference edge on a data medium, associated with a single reading
or writing component as the data medium moves past the
Glossary-36
component. (2) The portion of a moving data medium such as a
drum, or disk, that is accessible to a given reading head position.
transistor-transistor logic (TTL). A popular logic circuit family
that uses multiple-emitter transistors.
translate.
To transform data from one language to another.
transmission. (1) The sending of data from one place for
reception elsewhere. (2) In ASCII and data communication, a
series of characters including headings and text. (3) The
dispatching of a signal, message, or other form of intelligence by
wire, radio, telephone, or other means. (4) One or more blocks
or messages. For BSC and start-stop devices, a transmission is
terminated by an EOT character. (5) Synonymous with data
transmission.
TTL.
Transistor-transistor logic.
typematic key.
held pressed.
v.
A keyboard key that repeats its function when
Volt.
vector.
In computer graphics, a directed line segment.
video. Computer data or graphics displayed on a cathode ray
tube, monitor, or display.
view point. In computer graphics, the origin from which angles
and scales are used to map virtual space into display space.
viewing reference point. In computer graphics, a point in the
modeling coordinate space that is a defined distance from the
view point.
viewing transformation. Operations on the coordinates of an
object (usually matrix multiplications) that cause the view of the
object to be rotated about any axis, translated (moved without
Glossary-37
rotating), and/or scaled (changed in size along any or all
dimensions). Viewing transformation differs from modeling
transformation in that perspective is considered. See also
modeling transformation.
viewpiane. The visible plane of a CRT display screen that
completely contains a defined window.
viewport. In computer graphics, a predefined part of the CRT
display space.
volt. The basic practical unit of electric pressure. The potential
that causes electrons to flow through a circuit.
w.
watt.
Watt.
The practical unit of electric power.
window. (1) A predefined part of the virtual space. (2) The
visible area of a viewplane.
word. (1) A character string or a bit string considered as an
entity. (2) See computer word.
write. To make a permanent or transient recording of data in a
storage device or on a data medium.
write precompensation. The varying of the timing of the head
current from the outer tracks to the inner tracks of the diskette to
keep a constant 'write' signal.
yon plane. In computer graphics, a plane that is perpendicular to
the line joining the viewing reference point and the view point,
and that lies beyond the viewing reference point. Any part of an
object beyond the yon plane is not seen. See also hither plane.
Glossary-38
Bibliography
•
Microprocessor and Peripheral Handbook
INTEL Corporation.21 0844. 001
•
Introduction to the iAPX 286
INTEL Corporation.21 0308.001
•
iAPX 286 Operating Systems Writer's Guide
INTEL Corporation. 121960. 001
•
iAPX 286 Programmer's Reference Manual
INTEL Corporation.21 0498.001
•
iAPX 286 Hardware Reference Manual
INTEL Corporation.21 0760. 001
•
Numeric Processor Extension Data Sheet
INTEL Corporation.21 0920
•
80287 Support Library Reference Manual
INTEL Corporation. 12 212 9
•
National Semiconductor Corporation. NS16450
•
Motorola Microprocessor's Data Manual
Motorola Inc. Series B
BibIiography-l
Notes:
Bihliograpby-2
Index
A
B
AAA 6-8
AAD 6-9
AAM 6-9
AAS 6-8
access time,
track-to-track 9-6
ADC 6-6
ADD 6-6
additional ROM
modules 5-13
address generation, DMA 1-9
address latch enable 1-35
address latch enable,
buffered 1-32
address mode
real 1-4
address space, I/O 1-24
address, segment 1-4
addresses, CMOS RAM 1-56
addresses, page register 1-10
AEN 1-35
ALE 9-4
alternate key 5-20
AND 6-10
APL 9-7
application guidelines 9-7
arithmetic instructions 6-6,
6-25
ARPL 6-19
ASCII characters 7-3
ASCII, extended 5-14
BALE 1-32
bandwidth 1-7
BASIC 9-7
basic assurance test 4-5
BASIC interrupts 5-6
BAT 4-5
battery connector 1-72
BHE 1-9
BIOS
quick reference 5-24
BIOS fixed disk
parameters 1-63
BIOS memory map 5-10
BIOS programming
hints 5-10
block diagram
keyboard interface 1-49
system xiv
system board 1-6
system timer 1-22
board, system 1-3
BOUND 6-16
break code 4-4,4-11
break key 5-21
buffer, keyboard 4-3
buffered address latch
enable 1-32
buffers, video display 9-14
bus controller 1-32
bus cycle 1-7
busy loop 9-17
bypassing BIOS 9-6
byte high enable 1-9
Index-l
c
CALL 6-13
capacitor, variable 1-41
caps lock key 5-20
CBW 6-9
channel, I/O 1-24
connectors 1-25
pin assignments 1-28
signals 1-31
channels, DMA 1-7, 1-9
character codes 5-14
characters 7-3
classes, wait loop 9-17
CLC 6-17
CLD 6-17
CLEX 6-27
CLI 6-17
CLK 1-31
clock
real-time 1-56, 1-57
clock and data signals
clock cycle 1-7
clock line,keyboard 1.,.54,
4-5,4-12,4..,13
clock, system 1-7
CMC 6-17
CMOS RAM 1-56
CMOS RAM addresses 1-56
CMOSRAM
configuration 1-59
CMOS RAM I/O
operations 1-68
CMP 6-7
CMPS 6'-11
COBOL 9-7
code
device driver 9-16
machine
identification 9-19
machine-sensitive 9-19
Index-2
codes
character 5-14
extended 5-18
multitasking
function 9-18
color burst signal 1-41
command codes, DMA
controller 1-11
commands
I/O 9-11
keyboard 4-9
keyboard controller 1-51
keyboard system 4-5
commands from the system
commands to the system
comparison instructions 6- 23
compatibility, hardware 9-3
condition, wait 9-17
configuration record 1-56
configuration, CMOS
RAM 1-59
connectors
battery 1-72
I/O channel 1-25
J-l through J-16 1-26
keyboard 1-73,4-3
power LED and key
lock 1-72
power supply 1-71
power supply output 3-7
speaker 1-72
system board 1,.71
constants instructions 6-24
control
game 9-14
sound 9-1~
control key 5-20
control transfer
~structions 6-13
controller, keyboard 1-42
controllers
bus 1-32
DMA 1-7,1-9, 1-10
interrupt 1-12
refresh 1-7
coprocessor controls 1-39
coprocessor programming 2-3
coprocessor, math 2-3
copy protection 9-5,9-14
Ctrl state 5-18
CTS 6-18
CWD 6-9
cycle
bus 1-7
clock 1-7
microprocessor 1-7
D
DACK 0-3 and 5-7 1-35
DAS 6-8
data area, ROM BIOS 9-14
data communication
equipment 8-3
data input, keyboard 4-13
data line, keyboard 1-54,4-5,
4-12,4-13
data output, keyboard 4-13
data stream 4-12
data terminal equipment 8-3
data transfer instructions 6-3,
6-22
data transfer rate,
diskette 9-6
DEC 6-7,6-8
decodes, memory 1-11, 1-31
DECSTP 6-28
default segment
workspace 5-9
description
descriptors 1-5
device driver code 9-16
diagnostic checkpoint
port 1-39
direct memory access 1-9
disk pointer 9-12
disk base 9-6, 9-12
diskette change signal 9-6
diskette data transfer rate 9-6
diskette rotational speed 9-6
diskette track density 9-6
diskette write current 9-7
DN 6-9
divide error exception 9-9
DMA address generation 1-9
DMA channels 1-7, 1-9
DMA controller 1-7
DMA controller command
codes 1-11
DMA controller 1 1-9
DMA controller 2 1-10
DMA controllers 1-9
DOS 9-7
DOS function calls 9-10
DOS interrupts 5-6
DRQO-DRQ3 1-34
DRQ5-DRQ7 1-34
E
EIA/ CCITT 8-3
enable NMI 1-38
encoding, keyboard 5-13
ENTER 6-16
ESC 6-18
exception, divide error 9-9
extended ASCII 5-14
extended codes 5-18
Index-3
F
G
FABS 6-26
FADO 6-25
FCHS 6-26
FCOM 6-23
FCOMP 6-23
FCOMPP 6-24
FON 6-25
FIFO 4-3
FLO 6-22
FLOLG2 6-24
FLOLN2 6-24
FLOL2T 6-24
FLOP 1 6-24
FLOZ 6-24
FLO 1 6-24
FMUL 6-25
FORTRAN 9-7
FPREM 6-26
FREE 6-28
French keyboard 4-16
FRNDINT 6-26
FSCALE 6-26
FSQRT 6-25
FST 6-22
FSTP 6-22
FSUB 6-25
FTST 6-24
function calls, DOS 9-10
function codes,
multitasking 9-18
FXAM 6-24
FXCH 6-23
FXTRACT 6-26
game control 9-14
gap length parameter 9-12
generator,refresh
request 1-22
German keyboard 4-17
graphics modes 5-8
guidelines, application 9-7
Index-4
H
hard code 5-10
hardware compatibility 9-3
hardware interrupts 5-6
HLT 6-17
hooks 9-16
I
I/O address map 1-37
I/O address space 1-24
I/O CH CK 1-32, 1-40
I/O CH ROY 1-33
I/O channel 1-24
connectors 1-25
pin assignments 1-28
signals 1-31
I/O channel check 1-32
I/O channel connectors 1-28
I/O channel ready 1-33
I/O chip select 1-36
I/O commands 9-11
I/O CS16 1-36
I/O ports, keyboard
controller 1-54
I/O read 1-33
I/O write 1-33
IDIV 6-9
IIMUL 6-9
IMR 9-14
IMUL 6-8
IN 6-5
INC 6-6
INCSTP 6-28
inhibit keyboard 1-48
input buffer, keyboard
controller 1-51
input port, keyboard
controller 1-54
input requirements 3-3
inputs, power supply 3-3
INS 6-12
instructions
arithmetic 6-6, 6-25
comparison 6-23
constants 6-24
control transfer 6-13
data transfer 6-3, 6-22
logic 6-9
processor control 6-17
protection control 6-18
rotate 6-9
shift 6-9
string manipulation 6-11
INT 6-16,6-27
interface, keyboard 4-3
interfaces, multitasking 9-16
interrupt controller 1-12
interrupt mask register 9-14
interrupt service routine 1-33
interrupt sharing 1-14
interrupt vectors 9-14
interrupt, single step 9-8
interrupts
BASIC 5-6
DOS 5-6
hardware 5-6
program 5-3
program interrupt listing
(real mode) 5-5
sharing 1-14
system 1-12
interrupts, program (real
mode) 5-5
INTO 6-16
lOR 1-33
lOW 1-33
IRET 6-16
IRQ 2 9-11
IRQ 9 9-4,9-11
IRQ3-IRQ15 1-33
Italian keyboard 4-18
J
JB/JNAE 6-14
JBE/JNA 6-14
JCXZ 6-16
JE/JZ 6-14
JL/JNGE 6-14
JLE/JNG 6-14
JMP 6-13
JNB/JAE 6-15
JNBE/JA 6-15
JNE/JNZ 6-15
JNL/JGE 6-15
JNLE/JG 6-15
JNO 6-15
JNP/JPO 6-15
JNS 6-15
JO 6-14
joystick support 5-6
JP/JPE 6-14
JS 6-14
jumper, RAM 1-40
Index-5
K
key lock 4-3
key scan codes 4-11
keyboard
buffer 4-3
clock line 1-54,4-5,4-12,
4-13
commands 4-9
connector 1-73,4-3
controller 1-42
controller commands 1-51
controller I/O ports 1-54
controller input
buffer 1-51
controller input port 1-54
controller output
buffer 1-51
controller output
port 1-54
controller status
register 1-49
controller test inputs 1-54
data input 4-13
data line 1-54,4-5,4-12,
4-13
data output 4-13
encoding 5-13
inhibit switch 1-48
interface 4-3
interface block
diagram 1-49
layout 1-44,5-15
outputs 4-11
routine 5-23
specifications 4-22
system commands 4-5
keyboard layouts
keyboard scan-code outputs
keyboard, French 4-16
keyboard, German 4-17
Index-6
keyboard, Italian 4-18
keyboard, Spanish 4-19
keyboard, u.K. English 4-20
keyboard, U.S. English 4-21
keys 4-4
alternate 5-20
break 5-21
caps lock 5-20
combinations 5-21
control 5-20
number lock 5-21
pause 5-22
print screen 5-22
scroll lock 5-20
shift 5-19
system request 5-6, 5-22
keys, typematic 4-4
L
LAHF 6-5
LAR 6-19
layout system board 1-74
layout, keyboard 1-44,5-15
LAI7-LA23 1-31
LDCW 6-27
LDENV 6-27
LDS 6-5
LEA 6-5
LEAVE 6-16
LED 4-5
LES 6-5
LGDT 6-18
LIDT 6-18
light emitting diodes 4-5
line contention 4-13
line, multipoint 8-5
line, point-to-point 8-5
LLDT 6-18
LMSW 6-19
load current 3-4
LOCK 6-17
LODS 6-11
logic diagrams
logic instructions 6-9
LOOP 6-15
loop, busy 9-17
LOOPNZ/LOOPNE 6-16
loops, program 9-14
LOOPZ/LOOPE 6-15
LSL 6-19
LTR 6-18
MOVS 6-11
MUL 6-8
multi-tasking
function codes 9-18
interfaces 9-16
provisions 9-16
serialization 9-16
startup 9-16
multipoint line 8-5
M
NEG 6-8
network, nonswitched 8-5
network, switched 8-5
NMI 1-12, 1-38
:po load protection 3-5
non-maskable interrupt 1-38
nonswitched network 8-5
NOP 6-26, 6-28
NOT 6-11
Num Lock state 5-18
number lock key 5.,.21
machine identification
code 9-19
machine-sensitive code 9-19
make code 4-4, 4-11
mask on and off 1-39
master 1-35
math coprocessor 2-3,9-11
math coprocessor
controls 1-39
MEM chip select 1-36
MEM CS16 1-36
memory 1-4
memory decodes 1-11, 1-31
memory locations,
reserved 5-9
memory map, BIOS 5-10
MEMR 1-34
MEMW 1-34
microprocessor 1-4, 1-7
microprocessor cycle 1-7
modes, graphic 5-8
modules, RAM 1-24
modules,
ROM/EPROM 1-23
MOV 6-3
N
o
operations, CMOS RAM
I/O 1-68
OR 6-10
OSC 1-36, 1-41
oscillator 1-36
OUT 6-5
output buffer, keyboard
controller 1-51
output port, keyboard
controller 1-54
output protection 3-4
Index-7
output voltage sense
levels 3-6
output voltage
sequencing 3-4
outputs, keyboard 4-11
outputs, power supply 3-4
OUTS 6-12
p
page register addresses 1-10
parameter
gap length 9-12
passing 5-4
tables 9-12
parameters, BIOS fixed
disk 1-63
Pascal 9-7
PATAN 6-26
pause key 5-22
performance, system 1-7
point-to-point line 8-5
POP 6-4
paPA 6-4
POPF 6-6, 9-8
paR 4-4
port, diagnostic
checkpoint 1-39
post 9-17
power good signal 3-5
power LED and key lock
connector 1-72
power on reset 4-4
power supply
connectors 1-71
inputs 3-3
output connectors 3-7
outputs 3-4
power-on routine
print screen key 5-22
Index-8
priorities, shift key 5-21
processor control
instructions 6-17
program interrupts 5-3
program loops 9-14
programming hints,
BIOS 5-10
programming,
coprocessor 2-3
protected mode 1-5,5-6
protection control
instructions 6-18
protection, no load 3-5
provisions, multitasking 9-16
PTAN 6-26
PUSH 6-3
PUSH SP 9-8
PUSHA 6-4
PUSHF 6-6
Q
quick reference charts
7-14
R
RAM jumper 1-40
RAM modules 1-24
RAM subsystem 1-24
RAM, CMOS 1-56
rate, typematic 4-4, 4-7
real address mode 1-4,2-5
real mode 5-3
real-time clock 1-56, 1-57
record, configuration 1-56
refid=admod.virtual 1-4
REFRESH 1-35
refresh controller 1-7
refresh request
generator 1-22
regulation tolerance 3-4
REP/REPNE,
REPZ/REPNZ 6-12
requirements, input 3-3
reserved memory
locations 5-9
reserved scan codes 1-47
RESET ORV' 1-32
reset, system 5-21
RET 6-13
ROM BIOS 9-10
ROM BIOS data area 9-14
ROM modules,
additional 5-13
ROM scan codes 5-13
ROM subsystem 1-23
ROM/EPROM
modules 1-23
rotate instructions 6-9
rotational, speed 9-6
routine, interrupt
service 1-33
routine, keyboard 5-23
RS-232 8-3
RSTOR 6-28
s
SAHF 6-5
SAVE 6-28
SAO-SA19 1-31
SBB 6-7
SBHE 1-35
scan code translation 1-43
scan codes 4-11
scan codes, key 4-11
scan codes, ROM 5-13
SeAS 6-11
scroll lock key 5-20
SOO-S015 1-32
segment address 1-4
segments 1-5
sense levels, output
voltage 3-6
sequencing, output
voltage 3-4
serialization,
multitasking 9-16
SETPM 6-27
SGOT 6-18
shift counts 9-9
shift instructions 6-9
shift key 5-19
shift key priorities 5-21
Shift state 5-18
shift states 5-19
SlOT 6-18
signals
diskette change 9-6
I/O channels 1-31
power good 3-5
system clock 9-4
single step interrupt 9-8
SLOT 6-18
SMEMR 1-34
SMEMW 1-34
SMSW 6-19
sound control 9-13
Spanish keyboard 4-19
speaker 1-40
speaker connector 1-72
speaker tone generation 1-22
special vectors 5-6
specifications
specifications, keyboard 4-22
startup, multitasking 9-16
states
Ctrl 5-18
Num Lock 5-18
Shift 5-18,5-19
Index-9
status register, keyboard
controller 1-49
STC 6-17
STCW 6-27
STD 6-17
STENV 6-27
STI 6-17
STOS 6-12
STR 6-19
string manipulation
instructions 6-11
STSW 6-27
STSWAX 6-27
SUB 6-7
subsystem, RAM 1-24
subsystem, ROM 1-23
support joystick 5-6
switched network 8-5
switches
keyboard inhibit 1-48
type of display 1-41
system BIOS usage 5-3
system block diagram xiv
system board 1-3
system board block diagram type 1 1-6
system board block diagram type 2 1-6
system board
connectors 1-71
system board layout 1-7 4
system bus high enable 1-35
system clock 1-7
system clock signal 9-4
system interrupts 1-12
system performance 1-7
system request key 5-6, 5-22
system reset 5-21
system timer block
diagram 1-22
system timers 1-22
Index-to
T
T/C 1-35
table, translation 1-45
tables, parameter 9-12
terminal count 1-35
TEST 6-10
test inputs, keyboard
controller 1-54
time-outs 9-19
timer/counter 1-22
timer/counters 1-22
timers, system 1-22
tone generation, speaker 1-22
track density, diskette 9-6
track-to-track access
time 9-6
translation table 1-45
translation, scan code 1-43
tri-state 1-36
type of display adapter
switch 1-41
typematic keys 4-4
typematic rate 4-4, 4-7
u
u.K. English keyboard
U.S. English keyboard
4-20
4-21
v
variable capacitor 1-41
vectors, special 5-6
VERR 6-19
video display buffers 9-14
virtual address mode
1-4, 2-5
y
W
YL2XP1
WAIT 6-17
wait condition 9-17
wait loop classes 9-17
workspace, default
segment 5-9
write current, diskette 9-7
Z
6-27
zero wait state
1-36
Numerals
X
ows
XCHG 6-4
XLAT 6-5
XOR 6-11
1-36
2XM1 6-26
80286 1-4
8042 1-42
82288 1-32
8237A-5 1-9
8254-2 1-22
8259A Interrupt
1-12
Index-ll
Notes:
Index-12
---------- ----------------_.-
The Personal Computer
Hardware Reference
Library
Reader's Comment Form
Technical Reference
6280070
Your comments assist us in improving the usefulness of
our publication; they are an important part of the input
used for revisions.
IBM may use and distribute any of the information you
supply in any way it believes appropriate without
incurring any obligation whatever. You may, of course,
continue to use the information you supply.
Please do not use this form for technical questions
regarding the IBM Personal Computer or programs for
the IBM Personal Computer, or for requests for
additional publications; this only delays the response.
Instead, direct your inquiries or request to your
authorized IBM Personal Computer dealer.
Comments:
NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES
BUSINESS REPLY MAIL
FIRST CLASS
PERMIT NO. 40
ARMONK, NEW YORK
POSTAGE WILL BE PAID BY ADDRESSEE
IBM PERSONAL COMPUTER
READER COMMENT DEPARTMENT
P.O. BOX 1328-C
BOCA RATON, FLORIDA 33429-9960
I•• 11 ••• II •• 1111111.11. 1•• 1.1 •• 1.111.111111'11.1.111
.......................................................................................
8J84 PIO:!
81delS
IOU
op 8se81d
8del
---- ------_.-
--- ---- -----
The Personal Computer
Hardware Reference
Library
Reader's Comment Form
Technical Reference
6280070
Your comments assist us in improving the usefulness of
our publication; they are an important part of the input
used for revisions.
IBM may use and distribute any of the information you
supply in any way it believes appropriate without
incurring any obligation whatever. You may, of course,
continue to use the information you supply.
Please do not use this form for technical questions
regarding the IBM Personal Computer or programs for
the IBM Personal Computer, or for requests for
additional publications; this only delays the response.
Instead, direct your inquiries or request to your
authorized IBM Personal Computer dealer.
Comments:
NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES
BUSINESS REPLY MAIL
FIRST CLASS
PERMIT NO. 40
ARMONK, NEW YORK
POSTAGE WILL BE PAID BY ADDRESSEE
IBM PERSONAL COMPUTER
READER COMMENT DEPARTMENT
P.O. BOX 1328-C
BOCA RATON, FLORIDA 33429-9960
1111111111111111111111111111111111111111111111111111
aJa4 Pia.::!
aldelS IOU op aseald
ade.L
-------- --------- ----_.-
The Personal Computer
Hardware Reference
Library
Reader's Comment Form
Technical Reference
6280070
Your comments assist us in improving the usefulness of
our publication; they are an important part of the input
used for revisions.
IBM may use and distribute any of the information you
supply in any way it believes appropriate without
incurring any obligation whatever. You may, of course,
continue to use the information you supply.
Please do not use this form for technical questions
regarding the IBM Personal Computer or programs for
the IBM Personal Computer, or for requests for
additional publications; this only delays the response.
Instead, direct your inquiries or request to your
authorized IBM Personal Computer dealer.
Comments:
NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES
BUSINESS REPLY MAIL
FIRST CLASS
PERMIT NO. 40
ARMONK, NEW YORK
POSTAGE WILL BE PAID BY ADDRESSEE
IBM PERSONAL COMPUTER
READER COMMENT DEPARTMENT
P.O. BOX 1328-C
BOCA RATON, FLORIDA 33429-9960
11111 ••• 11 •• 1•• 11.1.11.1 •• 111 •• 1.1 ••• 11 •• 111 ••• 111.1
aJalj
aldelS
IOU
PIO~
op aseald
ade.L
-------- ---- -------_.-----
The Personal Computer
Hardware Reference
Library
Reader's Comment Form
Technical Reference
6280070
Your comments assist us in improving the usefulness of
our publication; they are an important part of the input
used for revisions.
IBM may use and distribute any of the information you
supply in any way it believes appropriate without
incurring any obligation whatever. You may, of course,
continue to use the information you supply.
Please do not use this form for technical questions
regarding the IBM Personal Computer or programs for
the IBM Personal Computer, or for requests for
additional publications; this only delays the response.
Instead, direct your inquiries or request to your
authorized IBM Personal Computer dealer.
Comments:
NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES
BUSINESS REPLY MAIL
FIRST CLASS
ARMONK, NEW YORK
PERMIT NO. 40
POSTAGE WILL BE PAID BY ADDRESSEE
IBM PERSONAL COMPUTER
READER COMMENT DEPARTMENT
P.O. BOX 1328-C
BOCA RATON, FLORIDA 33429-9960
1•• 11 ••• 11 •• 1•• 1•• 1.11.1 •• 1.1 •• 1.1 ••• 11 •• 11 •••• 1.1.1
........................................................................................
aJa4 PIO.:l
aldelS
IOU
op aseald
adel
---------- ----- -- -------------_.-
®
International Business Machines Corporation
P.O. Box 1328-W
Boca Raton, Florida 33429-1328
6139362
Printed in the United States of America
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : No XMP Toolkit : Adobe XMP Core 4.2.1-c043 52.372728, 2009/01/18-15:56:37 Create Date : 2014:07:13 18:53:36-08:00 Modify Date : 2014:07:13 18:22:13-07:00 Metadata Date : 2014:07:13 18:22:13-07:00 Producer : Adobe Acrobat 9.55 Paper Capture Plug-in Format : application/pdf Document ID : uuid:dad24be5-4a7f-ba44-8c4b-8457760487bd Instance ID : uuid:a7fff187-1b38-e14c-9a10-e834ce911e20 Page Layout : SinglePage Page Mode : UseNone Page Count : 507EXIF Metadata provided by EXIF.tools