8085 Kit Manual

User Manual:

Open the PDF directly: View PDF .
Page Count: 117

Download
Open PDF In Browser	View PDF

8085 Microprocessor Kit
User's Manual

Rev1.0, December, 2016

Contents
Overview……………………………………………………..………………….3
Hardware Features – Software Features
Getting Started…..………………………………………………………………5
AC Adapter – LED Display and Keypad – RESET – ADDR – DATA –
INC – DEC – HOME – ALT – GO – STEP – MOD – Program 1 – Program
2 – Program 3
Connecting Terminal..……………………………………….…………………18
Command ‘A’ – Command ‘C’ – Command ‘D’ – Command ‘E’ –
Command ‘F’ – Command ‘H’ – Command ‘I’ – Command ‘J’ –
Command ‘K’ – Command ‘L’ – Command ‘M’ – Command ‘N’ –
Command ‘Q’ – Command ‘R’ – Command ‘S’ – Command ‘W’ –
Command ‘SPACE BAR’
Hardware……………………………………………………………………….27
CPU – Memory – GPIO – Programmable Port 8255 – Programmable
Counter 8254 – Headers and Connectors – Interrupt Test Button –
Technical Specifications – Monitor Call Number-NVRAM Bootable
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Appendix G

LCD Driver Routines
SCAN Keyboard and Display Subroutines
UART Driver Routines
Using NVRAM Bootable
Machine Code and 8085 Instructions
Hardware Schematic
Monitor source code listing

2

Overview
The 8085 Microprocessor kit is a low-cost single board computer designed for
self-learning the popular 8085 Microprocessor. The kit enables studying from low
level programming with direct machine code entering to high level programming
with PC tools easily. A nice feature, single-step running, helps students learn the
operation of microprocessor instructions quickly and clearly. The user registers
provide simple means to verify the code execution. Using a PC as the terminal, the
kit can receive the Intel hex file and disassemble the machine code into 8085
instructions.

Figure 1: Components layout.

3

Hardware Features:
•
•
•
•
•
•

CPU: Mitsubishi M5M80C85AP-2 @4MHz
Memory: 32kB Monitor ROM and 32kB SRAM
Simple I/O Port: 8-bit GPIO
Programmable Ports: 8255 chips
Programmable Counter: 8254
UART: NS8250 UART chip

Onboard I/O devices:
•
•
•
•
•
•
•
•
•
•
•
•

6-digit seven segment super bright LED
28-keypad
8-bit dot LED indicates status of GPIO1
Speaker
Direct BUS interface text LCD
Serial Interface: RS232C 9600bit/s 8-data bit no parity one stop bit
+5V Power Supply: voltage regulator with input protection
40-pin header for CPU bus
Counter timer 8254
onboard logic probe power supply
Test button for single pulse generation to the interrupt pins
Brown-out Protection

Software Features:
•
•
•
•
•
•
•
•
•

Enter the machine code in hexadecimal
Single-step execution
Examine and modify user registers
Run user code with software break-point
Insert and Delete byte
Built-in LCD drivers
Download Intel Hex file
Disassemble machine code into 8085 instructions
Display user registers and disassemble the instruction after single-stepping

4

Getting Started
AC Adapter
The kit requires DC power input to operate. The input voltage accepts from +7.5V
to +12V. You may find any AC-to-DC adapter having DC jack with polarity as
shown in Figure 2. The board has protection diode to prevent wrong polarity. If
your adapter’s jack has different polarity, when plug it to the board, no power will
be supplied. The center pin is positive.

-

+

Figure 2: Polarity of DC jack.

When power up the board, the 8085 fetches
the instruction from the memory at location 0000H. The location from 0000H to
7FFFH or 32kB is ROM space. It contains the monitor program. The monitor
program enables us to enter 8085 instruction using HEX digit into the RAM. We
can let the 8085 RUN our program easily using monitor key GO.
When the board was powered up, the cold message running text 8085 will show
on 7-segment LED and the onboard dot LED will turn on and the speaker will
sound beep. The HOME location is pointed to RAM at address 8100H. The data
LED will display the content at 8100H.

5

LED Display and Keypad
The kit has 6 digits 7-segment LED and 28 tact switches keypad.
Four digits is used for displaying the memory address and user registers contents.
Two digits “DATA” is for displaying the 8-bit data byte at address shown in the
left-hand. The dot indicator indicates the current mode of HEX digit entering.
Figure 3 shows the memory location 8100 has an 8-bit data, 1E. The dot indicates
the current mode is data entry. Typing Hex key will insert hex digit into data
memory.

8100 1E.
Figure 3: ADDRESS and DATA fields.

Keypad has two groups: the left-hand is 16-hex key 0-F and the right-hand is 10function key. The hex key also has alternate functions when used with ALT key.

Figure 3: Keyboard layout, HEX and Function Keys.

6

The functions key are:
RESETis hardware reset. Press reset will force the CPU begins execution the
ROM monitor at address 0000H. (The reset out signal
which is active high also feed to reset pins of the
UART and the 8255 PPI).
ADDR changes current mode to ADDRESS entry mode. The dot indicator will
move to ADDRESS filed.
DATA changes current mode to DATA entry mode. The dot indicator will move
to DATA filed.
Key + increments current address by one. The content of new address will show in
data field LED.
Key - decrements current address by one. The content of new address will show in
data field LED.
HOME brings home address back to current display. The home address is 8100H.
ALT enables alternate functions that used with HEX key. We can press ALT
followed with HEX key. The Alternate functions are
described below.
ALT 0 displays user register AF. The Accumulator and Flag registers. Contents of
accumulator is high byte and Flag is low byte.
ALT 1 displays user register BC.
ALT 2 displays user register DE.
ALT 3 displays user register HL.
ALT 4 displays user register SP.
ALT 5 displays user register PC.
ALT 6 displays CARRY flag.
ALT 7 displays ZERO flag.
ALT 8 displays SIGN flag.

7

ALT 9 displays HALF CARRY flag.
ALT A displays PARITY flag.
ALT B sets break address.
ALT C clears break address.
ALT D deletes one of the current location and shifts the next byte UP.
ALT E inserts one byte and shifts the next byte DOWN.
ALT F Toggle beep ON/OFF.
GO forces CPU to jump from monitor program to user program at current address.
STEP executes one instruction at address shown in current display.
MOD modifies the user registers. It was used together with ALT 0-5.
User registers are memory spaces in RAM prepared for saving and loading to the CPU
registers when the CPU jump from monitor program to user program and back to the
monitor program. It is useful for program debugging. We will learn how to use them easily
in the program testing section.

Entering the program into RAM and Run it
Test Program 1
Let us learn how to use hex keypad to help enter the computer code to memory
and test run it. Suppose we want to write the program that displays the content of
the accumulator using onboard gpio LED. The kit has 8-bit dot LED tied to the 8bit output port. Logic ‘1’ presents at a given bit will make the LED ON. Logic ‘0’
makes the LED OFF. We will write the small program that shows the accumulator
content.

8

1010 1010

Accumulator

1010 1010 GPIO port
8-bit DOT LED
Figure 4: Writing the Accumulator content to gpio PORT at location 0.

Our program is,
main:

inr a ; increment accumulator
out 0 ; write to port 00
jmp main ; jump back to main

We see that the program has only three instructions, i.e., inr a, out 0 and jmp main.
The program was written using 8085 instructions. To test our program, we must
translate above program into the 8085 hex code. This can be done easily with
hand-code assembly. See Appendix E for machine code of the instructions.
Since we will write the machine code to the memory for testing, so the space must
be RAM. We must know the memory allocation. Figure 5 shows the memory
space allocation. We see that the board provides begin address for user program at
8100H. Some of the locations from 8000H to 803CH are reserved for interrupts
vectors. The RAM locations from F000H to FFFFH are used by monitor program.

9

Figure 5: Memory space allocation.

Thus we can place our machine code started at location 8100. After translation we
get the code for each instruction as shown below.
8100 3C
8101 D300
8103 C30081

main:

inr a
out 0
jmp main

The 1st instruction, inr a, increments the accumulator by one. It has one byte
machine code 3C. This byte will be placed at location 8100.
The 2nd instruction, out 0, write accumulator content to the gpio port at location 00
has two bytes machine code, D3, 00. D3 is the instruction OUT and 00 is port
location.

10

Figure 6: I/O space allocation, User PPI is not available for this version.

The 3rd instruction, jmp main, jump back to location 8100 has three bytes machine
code, C3,00,81. C3 is the JMP, and 8100 is location to be jump (Intel places low
byte to low address and high byte to high address).
Above program has only 6 bytes. We can enter such code into RAM easily using
HEX key. Here is the byte sequence from address 8100 to 8105.
ADDRESS
8100
8101
8102
8103
8104
8105

DATA
3C
D3
00
C3
00
81

Now enter the code into memory address 8100.
Step 1 Press RESET, the address display will show 8100 and the data LED will
show its contents.

11

The current mode will be data entry. We can swap entry mode for hex key
between address and data by pressing key ADDR or DATA. The DOT indicator
will swap between ADDR mode and DATA mode.
To enter a byte to this location, press HEX key 3 and key C.
The 3C byte will enter to address 8100.

8100 3C.
Step 2 Press key + to increment address.
The address display will show 8101. Then repeat step1 until 81 byte was entered
to address 8105.

8100 d3.
You can use key + or key - to check the hex code, you can modify it easily in
DATA entry mode.
We will begin set the value to user Accumulator beforehand. It will clear the user
register A to zero.
Press key ALT, 0/AF, display will show the content of user Accumulator and Flag
register.
Press key MOD, then key 0,0,0,0. The AF will be 0000.
Press key HOME, this brings current location to 8100.
Press key STEP, the display will show next instruction to be executed at address
8101. We can examine the content of AF by key ALT, 0/AF. We see that now
Accumulator is 01.
Press key STEP again, the 01 will send to LED onboard GPIO. This is the content
of the accumulator after increment instruction.
The next instruction, JMP 8100 will be executed.

12

We can keep press key STEP, we will see every time the instruction out 0 was
executed, the value of accumulator will write to the GPIO LED.
It works! This demonstration how STEP key helps running the program single
instruction.
Instead of execution one instruction using single step, we can run the program
without stopping for each instruction. We will try with key GO.
Now press HOME to bring current location to 8100, press RUN.
What happen to the LED?
Did you see the LED counting?
Should it be counting up?
There are two methods of program running. First is to use single stepping. This
kind executes only one instruction at a time when we press STEP key. We can
learn the operation easily with user registers. The monitor program loads the
contents of user registers to the CPU registers beforehand, after the instruction has
been executed, the contents of CPU registers will then be saved back to the user
registers. Thus we can examine the result after the instruction has been executed.
But above program, when we try with key GO, the CPU will jump from monitor
program to user program and never get back to monitor program. Since the
instruction JMP 8100 will jump back to 8100 forever. We see that the number
incrementing in the accumulator will be very fast.

13

How can we make the speed of counting slower? We can just simply add the job
that uses CPU time. See below program.

main:

org 8100h ; begin of code
inr a ; increment accumulator
out 0 ; write to port 00

; add the simple delay using register pair DE

delay:

lxi
dcr
jnz
dcr
jnz

d,1050h ; load 16-bit constant to DE
e
; decrement E
delay ; jump to delay location if E != 0
d
; decrement D
delay ; jump to delay location if D != 0

jmp main

; done, jump back to main again

I suppose now you can translate the instruction into the machine code. The first
mnemonic, ORG is not 8085 instruction. It is the assembler directive that tells the
assembler program to place the hex code begins at location 8100. We will learn
using assembler when using PC tools on later.
The portion of inserted code is bolded letters. We see that the method of time
delay is just to let the CPU counts the value in register D and register E. Counting
is done by instruction DCR E, decrement register by one for register E and D. The
JNZ, jump to specified location when ZERO flag is not set. That means if the
content of register E or D is not ZERO, it will jump back to decrement again. Until
both are ZERO, the CPU will continue execute the next instruction.

14

Here is the translation from instructions to machine code.

8100 3C
8101 D300

main:

org 8100h ; begin of code
inr a ; increment accumulator
out 0 ; write to port 00

; add the simple delay using register pair DE
8103
8106
8107
810A
810B

115010
lxi d,1050h ; load 16-bit constant to DE
1D
delay: dcr e
; decrement E
C20681
jnz delay ; jump to 81060 if E != 0
15
dcr d
; decrement D
C20681
jnz delay ; jump to 8106 if D != 0

810E C30081

jmp main
again

; jump back to main

This program has 17 bytes . We can enter the code into RAM from 8100 to 8110
easily.

ADDRESS
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
810A
810B
810C
810D
810E
810F
8110

DATA
3C
D3
00
11
50
10
1D
C2
06
81
15
C2
06
81
C3
00
81

15

After finished entering the code, press HOME to bring current RAM location to
8100. Then press key GO.
What happen to the onboard LED?
Can we change the speed of counting? How?
To stop running, press RESET key. You can modify the initial value of register
DE, 1050 to whatever you want to speed up or slow down.

Test Program 2
This program shows how to use key GO to force CPU jump from monitor program
to user program.
8100 1E02
8102 CF
8103 C30081

main:

mvi e,2
rst 1
jmp main

This program has only 6 bytes i.e., 1E, 02, CF, C3, 00, 81. Enter the code, and
press key HOME, GO.
We will see the cold message repeat running on the display. RST 1 having
machine code CF is the method that used to call built-in monitor functions.
Register E is monitor call number.
To stop program 2 running, we must press RESET key.

Test Program 3
We can test the program with software breakpoint. The instruction RTS 7 having
machine code FF returns control back to monitor program and saves the contents
of CPU registers to user registers. We can check the result in user registers easily.
Here is the program that adds two BCD numbers 19H and 02H. The result will be
21H.
8100
8102
8104
8105

3E19
0602
80
27

mvi
mvi
add
daa

a,19h ; load accumulator with 19h
b,2 ; load register B with 02
b ; add register B to accumulator
; adjust result to BCD

16

8106 FF

rst 7 ; jump back to monitor

After enter the code, you can run it with key GO. Check the result in Accumulator
with ALT 0.
For small program, we can place the RST 7 to the end of the program.
However for long program, sometime we may need to check at a given location,
the board also provides tool that helps inserting the RST 7 instruction to the
specified location. This tool is called set break point. Suppose we want to verify
the result after add b instruction. We can set break point at location 8105 by
setting the address to 8105 with key ADDR 8,1,0,5. Then press ALT B, the
display will show this address was set breakpoint.
Press HOME and GO, check user AF with ALT 0, we see that after addition, the
result in Accumulator is 1B. To clear this break address, press ALT C. The display
will show current address 8105. The code 27 will be restored back to address
8105. We can continue execution, press GO, and check result in AF again, we will
get 21. This the correct BCD number from the addition of 19+02=21.

17

Connecting Terminal
The kit provides RS232 port for connecting the terminal. The ROM monitor
contains ASCII commands when using UART to connect a terminal. The UART
drivers and serial commands are automatically configured when UART chip was
inserted. Communication format is 9600 bit/sec, 8 data bit, no parity and one stop
bit. We can use PC running VT100 terminal emulation. You may download free
terminal program, teraterm from this URL,
http://ttssh2.sourceforge.jp/index.html.en

RS232C cable

Figure 7: Connecting PC running teraterm and kit with RS232 cross cable.

There is no need to switch between standalone mode and terminal mode. Both
commands using keypad or terminal commands are working concurrently.
When press reset the prompt appears on screen.
MTK-85 8085 MICROPROCESSOR TRAINING KIT (? HELP)
8100>

Type ? for help menu listing.

18

MTK-85 8085 MICROPROCESSOR TRAINING KIT (? HELP)
A - ASCII code
C - clear watch variables
D - disassemble
E - edit memory
F - fill constant
H - hex dump
I - i/o address map
J - jump to user program
K - display user STACK
L - load Intel hex file
M - monitor call number
N - new location pointer
Q - quick home location
R - user register display
S - set value to user register
W - watch variables
SPACE BAR - single step
? - help menu
8100>

Command ‘A’ prints the hexadecimal code for printable ASCII characters.
Command ‘C’ clears the 16-byte watch variables.
The monitor provides quick access to a16-byte RAM for program testing. The
watch variables use RAM space from F000-F00F. Command 'W' prints such
memory on screen.
8100>
F000 AD FD FC 15 8E 9C DB 4D 4F 19 5F FD EB 3E 8A F5
8100>

Command ‘D’ disassembles the machine code into 8085 instructions.
8100>disassemble...
8100 3E19
8102 0602
8104 80

MVI
MVI
ADD

A,19
B,02
B

19

8105
8106
8107
810A
810B
810E
8111
8112
8115
8116
8119
811A
811C

27
FF
C20681
15
C20681
C30081
62
CDF862
80
DC1642
A5
D3C1
68

DAA
RST
JNZ
DCR
JNZ
JMP
MOV
CALL
ADD
CC
ANA
OUT
MOV

7
8106
D
8106
8100
H,D
62F8
B
4216
L
C1
L,B

811D>

Command ‘E’ examines and modify the data in memory. We can use this
command to enter machine code. To view the content, uses Space key and to enter
byte, press two digits. To quit just press ENTER.
8100>edit memory location = 8100
Enter to quit, SPACE key to view content
ADDR
8100
8101
8102
8103
8104
8105
8106
8107
8108

DATA
[3E]
[19] 01
[06]
[02]
[80] d3
[27] 00
[FF]
[C2]
[06]

8108>

Command ‘F’ fills 8-bit constant to memory. The example shows filling byte 00
to address 9010-9020.
9016>Begin address = 9010 End address = 9020 Data = 00
9016>

20

Command ‘H’ dumps memory. The content of memory from current pointer 9010
to 908F will display in hexadecimal. The ASCII code for each byte will be
displayed also. The dot will be displayed for nonprintable ASCII code.
9010>
9010
9020
9030
9040
9050
9060
9070
9080

00
4D
97
F0
A8
8A
A9
41

00
C2
47
36
E2
13
31
00

00
97
81
B2
30
8C
CD
89

00
CB
CE
69
84
FD
B7
F3

00
DA
C1
CF
76
4A
BB
54

00
DF
99
1D
AA
82
4E
BF

00
A0
98
90
C5
B9
8D
EC

00
BE
CB
90
18
99
BE
BF

00
9E
14
70
A7
4E
FF
E0

00
73
ED
F1
84
24
5B
9F

00
1A
45
73
C5
33
3C
72

00
34
DE
D8
32
9E
8D
CB

00
E3
35
C1
81
EB
EA
7D

00
A6
6A
4F
BF
16
5E
E8

00
83
7C
DF
B9
A8
4F
34

00
4E
F1
56
03
0D
7F
7A

................
M........s.4...N
.G........E.5j|.
.6.i....p.s..O.V
..0.v......2....
....J...N$3.....
.1...N...[<..^O
A...T.....r.}.4z

9090>

Command ‘I’ displays onboard I/O address.
9090>
00H-0FH onboard 4-bit GPIO, D0-D3=output port
D4-D7=input port
10H-13H 8255 system PPI, 10H=PORTA, 11H=PORTB, 12H=PORTC,
13H=CONTROL
20H-23H 8254 programmable counter, 20H=counter0, 21H= counter1
22H=counter2, 23H control register
30H-33H 8255 user PPI, 30H=PORTA, 31H=PORTB, 32H=PORTC,
33H=CONTROL
40H-47H C16550 UART registers
9090>

Command ‘J’ jumps from monitor program to user program. The example shows
jump to address 9000. The user register displays results after running the code.
The RST 7 returns control back to monitor program.
9090>jump to address [9006] = 9000

AF=5800 BC=19F4 DE=C256 HL=9504 SP=F098 PC=9007 S=0 Z=0 AC=0 P=0 CY=0
9090>

Command ‘K’ displays user STACK memory. The example below shows
running instruction PUSH H.

21

We first check the user register with command ‘r’. We see that TOP of STACK is
F098. After pressing SPACE BAR for single step, the SP is now F096. We can see
the contents of STACK memory with command k. The contents of HL was saved
in STACK.
9000>press r for user register display
AF=5800 BC=19F4 DE=C256 HL=9504 SP=F098 PC=9000 S=0 Z=0 AC=0 P=0 CY=0
9000>press SPACE bar for single step
9000 E5
PUSH
H
AF=5800 BC=19F4 DE=C256 HL=9504 SP=F096 PC=9001 S=0 Z=0 AC=0 P=0 CY=0
9000>press k for STACK display
ADDR
F096
F097
F098

DATA
[04]
[95]
[C0]

9000>

Command ‘L’ loads Intel Hex file to memory. The Assembler and C compiler for
8085 CPU produce standard Intel Hex file. The hex file contains machine code
represented by ASCII letters. The example below uses Teraterm to download the
hex file. The hex file is ASCII text file. So with the teraterm, we can go to Send
File. We can let it show only file with .hex extension by typing *.hex. Then double
clicks at the hex file.
The onboard dot LED will indicate downloading is on going. When completed, the
report will show number of byte received and print checksum error. If no error it
will show 0 errors.
9080>load Intel hex file...000005 bytes loaded 0 errors
9080>

Command ‘M’ shows monitor call number. Some of common subroutines can be
called through RST 1 with function number preloaded in register E.
9080>
see input parameters in user manual
1Enn MVI E,function_number
CF
RST 1
00 - demo

22

01
02
03
04
05
06
07
08
09
0A
0B
0C
0D

-

delay
cold_boot
scan
cin
cout
put_str
init_lcd
lcd_ready
clear_lcd
goto_xy
put_str_lcd
put_ch_lcd
demo2

9080>

Command ‘N’ sets new location pointer at prompt. The example sets new pointer
to E000 and press ‘d’ to disassemble.
9080>new location = e000
E000>disassemble...
E000
E001
E004
E005
E006
E007
E008
E009
E00C
E00E
E00F
E010
E011
E013
E014
E015

53
32DE2A
62
25
C9
1C
43
CC4A05
2655
67
04
F3
0E25
54
AF
C3F0C3

MOV
STA
MOV
DCR
RET
INR
MOV
CZ
MVI
MOV
INR
DI
MVI
MOV
XRA
JMP

D,E
2ADE
H,D
H
E
B,E
054A
H,55
H,A
B
C,25
D,H
A
C3F0

E018>

Command ‘Q’ sets location pointer at prompt to 9000 and sets user PC to 9000.
9000>
AF=5800 BC=19F4 DE=C256 HL=9504 SP=F096 PC=9000 S=0 Z=0 AC=0 P=0 CY=0

23

9000>

Command ‘R’ displays user registers contents.
9000>
AF=5800 BC=19F4 DE=C256 HL=9504 SP=F098 PC=9000 S=0 Z=0 AC=0 P=0 CY=0
9000>

Command ‘S’ sets value to user registers.
9013>set value to user register (enter A for AF) ?
AF=0404 ff00
9013>
AF=FF00 BC=19F4 DE=0434 HL=0534 SP=F096 PC=9006 S=0 Z=0 AC=0 P=0 CY=0
9013>

Command ‘W’ prints watch variables.
9013>
F000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Command ‘SPACEBAR’ executes the instruction at address in user PC. The
instruction will show on screen with user registers result after execution.
Suppose we write a program as shown below.
org 9000h
xra a
loop: out 0
mov h,a
inr h
push h
pop d
mov a,d
jmp loop
end
Then translate it to machine code file using the Assembler program. Download
hex file.
9000>load Intel hex file...000011 bytes loaded 0 errors

24

9000>disassemble...
9000
9001
9003
9004
9005
9006
9007
9008
900B
900C
900D
900E
900F
9010
9011
9012

AF
D300
67
24
E5
D1
7A
C30190
00
00
00
00
00
00
00
00

XRA
OUT
MOV
INR
PUSH
POP
MOV
JMP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP

A
00
H,A
H
H
D
A,D
9001

9013>print user register with command r
AF=5800 BC=19F4 DE=C256 HL=1234 SP=F098 PC=9000 S=0 Z=0 AC=0 P=0 CY=0
9013>press SPACE key to execute instruction at 9000, we see A=00
9000 AF

XRA

A

AF=0044 BC=19F4 DE=C256 HL=1234 SP=F098 PC=9001 S=0 Z=1 AC=0 P=1 CY=0
9013>press SPACE key, the content of A will send to GPIO
9001 D300

OUT

00

AF=0044 BC=19F4 DE=C256 HL=1234 SP=F098 PC=9003 S=0 Z=1 AC=0 P=1 CY=0
9013>press SPACE key, the content of A will copy to H
9003 67
MOV
H,A
AF=0044 BC=19F4 DE=C256 HL=0034 SP=F098 PC=9004 S=0 Z=1 AC=0 P=1 CY=0
9013> press SPACE key, the content of H will increment by 1
9004 24
INR
H
AF=0000 BC=19F4 DE=C256 HL=0134 SP=F098 PC=9005 S=0 Z=0 AC=0 P=0 CY=0
9013> press SPACE key, the content SP will decrement by 2
9005 E5
PUSH
H
AF=0000 BC=19F4 DE=C256 HL=0134 SP=F096 PC=9006 S=0 Z=0 AC=0 P=0 CY=0
9013> press K, to see the content of STACK memory
ADDR
F096
F097
F098

DATA
[34]
[01]
[C0]

9013> press SPACE key, DE will be loaded with top of STACK
9006 D1
POP
D
AF=0000 BC=19F4 DE=0134 HL=0134 SP=F098 PC=9007 S=0 Z=0 AC=0 P=0 CY=0
9013> press SPACE key, the content of D will copy to A

25

9007 7A

MOV

A,D

AF=0100 BC=19F4 DE=0134 HL=0134 SP=F098 PC=9008 S=0 Z=0 AC=0 P=0 CY=0
9013> press SPACE key, PC will be loaded with 9001
9008 C30190
JMP
9001
AF=0100 BC=19F4 DE=0134 HL=0134 SP=F098 PC=9001 S=0 Z=0 AC=0 P=0 CY=0
9013> press SPACE key, the content of A will send to GPIO, see LED!
9001 D300
OUT
00
AF=0100 BC=19F4 DE=0134 HL=0134 SP=F098 PC=9003 S=0 Z=0 AC=0 P=0 CY=0

26

Hardware
A block diagram of the 8085 kit is shown below. For complete hardware
schematic, see Appendix D.

CPU
The CPU is the 8-bit Microprocessor, 80C85. The XTAL frequency is 4MHz. The
reset signal is generated by RC circuit. The CPU is reset by brownout circuit.
In case of power supply is dipped caused by AC supply voltage dropped. The
brownout circuit detects VCC, if it is below threshold level, it will reset the
CPU.
The brownout condition can be tested by using a variable power supply. To test it,
adjust the board VIN from 0-12V slowly and see the CPU can start operating
properly.

Memory
The onboard has 64kB memory. The 32kB ROM monitor 27C256 is placed at
address 0000-7FFFH. And the 32kB SRAM 62256, is placed at address 8000HFFFFH.

27

Some of interrupt vectors are relocated to RAM, so user can write the jump
instruction to the location of such interrupt service routine easily. Here is the list of
location of interrupts.
8010H
8018H
8020H
8028H
802CH
8030H
8034H
803CH
Note:
1.
2.
3.
4.
5.

RST 2
RST 3
RST 4
RST 5
RST 5.5
RST 6
RST 6.5
RST 7.5

RST 7 is used for software breakpoint.
RST 1 is used for monitor function call.
TRAP is used for hardware single-step.
RST 7.5 is tied to OUT0 of 8254 programmable counter.
Monitor program uses last page of RAM for data storage, STACK area, and
monitor control functions. The space is from F000H to F098H.

GPIO1
GPIO1 provides 8-bit output port. The I/O address is 00. The output drives 8-dot
LED. We can use it for program testing easily.

System Programmable Port 8255
The I/O addresses of system port, 8255 are PORTA=10H, PORTB=11H,
PORTC=12H and Control Port = 13H. Buzzer control pin is PORT C bit 7. To
enable buzzer, write 7FH to PORTC.

Programmable Counter 8254
The programmable counter, 8254 was supplied with clock signal from
CLOCKOUT or 2MHz for counter0 and counter1. The internal registers of 8254
are mapped to I/O space from 20H to 23H.
20H
21H
22H
23H

COUNTER0
COUNTER1
COUNTER2
CONTROL REGISTER

28

Headers and Connectors
CPU Header JP1

29

Onboard LCD Header JR1

30

RS232C DB9 male connector VB1

Interrupts Test Button
The interrupt test button provides a single positive pulse that tied to CPU hardware
interrupt pins, RST5.5, RST6.5 and INTR. User can select the pulse to be
triggered for each pin by dip switch SW1. The onboard LED, D10 indicates the
pulse is activated when press Test button.

Technical Specifications
CPU: CMOS 80C85 @4MHz
Memory: 64kB, 32kB 27C256, 32kB 62256
I/O port: Programmable Parallel port 8255, 8-bit GPIO
Counter: Programmable Counter 8254
UART: NS8250
Brownout Reset: KIA7042
Board Size: 170 x 170 mm
Weight: 320g (complete components except LCD)
DC Power Supply: AC-to-DC adapter +7.5V-12V 400mA
Power consumption: (350mA @12VDC)

31

Monitor Call Number
00 - demo
Scan 7-segment display with buffer display pointed by HL
Entry: HL
Exit: none

01 - delay
Delay subroutine using register pair DE, D is outer loop delay, E is inner loop.
Entry: DE
Exit: none
02 - cold_boot
Display cold-boot message on 7-segment LED.
Entry: none
03 - scan
Scan keyboard and display one cycle.
Entry: HL points the display buffer
Exit: key = scan code –1 no key pressed
04 - cin
Get character from console
Entry: none
Exit: A = character received
05 - cout
Send character to console
Entry: A = character to be sent
Exit: none
06 - put_str
Print string to console, string is terminated by 0.
Entry: HL
Exit: none
07 - init_lcd
Initialize LCD module
Entry: none
Exit: none
08 - lcd_ready

32

Wait until LCD module is ready.
Entry: none
Exit: none
09 - clear_lcd
Clear LCD display
Entry: none
Exit: none
0A - goto_xy
Set cursor position of LCD
Entry: HL, H = x, L = y
Exit: none
0B - put_str_lcd
Print string to LCD, string is terminated by 0
Entry: HL
Exit: none
0C - put_ch_lcd
Print character to LCD at current cursor position
Entry: A
Exit: none
0D - demo2
Running GPIO LED
Entry: none
Exit: none

NVRAM Bootable (available for special kit only)
User can replace U2, SRAM with a Nonvolatile RAM for program storage, when
the board is powered off. A JMP instruction placed at 8000H will enable NVRAM
bootable. The monitor program checks the location 8000H. If it has C3 (opcode of
JMP instruction), it will jump to address 8000H. The feature allows application
code to run easily. The monitor subroutines are available for the application
program.
To get back to monitor mode, user can press USER key while press RESET. The
byte C3 at location 8000H will be changed to 00, thus get back to normal RESET.
The sample code that demonstrates NVRAM Bootable is shown in Appendix D.

33

Appendix A Onboard LCD Driver Routines
;------------------- onboard LCD registers ----------------command_write equ 50h
command_read
equ 52h
data_write
equ 51h
data_read
equ 53h
busy
equ 80h
;--------------------- LCD driver routines ----------------lcd_ready: push psw
lcd_ready1: in command_read
ani busy
jnz lcd_ready1
pop psw

; wait until lcd ready

ret
clear_lcd:

call lcd_ready
mvi a,1
out command_write
exit_clear: ret
init_lcd: call lcd_ready
mvi a,38h
out command_write
call lcd_ready
mvi a, 0ch
out command_write
call clear_lcd
ret
; print ASCII text on LCD
; entry: HL pointer with 0 for end of string
put_str_lcd: mov a,m
; get A from [HL]
cpi 0
jnz put_str_lcd1
ret
put_str_lcd1:
call lcd_ready

34

out data_write
inx h
jp put_str_lcd
; goto_xy set cursor location on lcd
; entry: HL: H = x, L = y
goto_xy:

call lcd_ready
mov a,l
cpi 0
jnz goto_xy1
mov a,h
adi 80h
out command_write
ret

goto_xy1: cpi
jnz
mov
adi
out
ret

1
goto_xy2
a,h
0c0h
command_write

goto_xy2: cpi
jnz
mov
adi
out
ret

2
goto_xy3
a,h
094h
command_write

goto_xy3: cpi
jnz
mov
adi
out
ret

3
goto_xy4
a,h
0d4h
command_write

goto_xy4: ret
; put_ch_lcd put character to lcd
; entry: A
put_ch_lcd: call lcd_ready
out data_write
ret

35

Appendix B Subroutine Scan keyboard and Display
; subroutine scan keyboard and display
; entry: hl pointer to display buffer
; exit: key = scan code
;
-1 no key pressed
;
scan:

push h
push b
push d
mvi c,6
mvi e,0

; for 6-digit LED
; digit scan code appears at 4-to-10
decoder
mvi d,0
; key position
mvi a,0ffh ; put -1 to key
sta key
; key = -1

scan1:

wait1:

mov
ori
out
mov
out

a,e
0f0h
; high nibble must be 1111
system_port_c ; active digit first
a,m
; load a with [hl]
system_port_b ; then turn segment on

mvi b,0
dcr b
jnz wait1
in

; delay for electron transition process

system_port_a

mvi b,8
shift_key: rar
jc next_key

push psw
mov a,d
sta key
pop psw

; read input port

; check all 8-row
; rotate right through carry
; if carry = 1 then no key
pressed

; save key position

next_key:
inr d

; next key position

dcr b
jnz shift_key

; until 8-bit was shifted

36

mvi a,0
out system_port_b

; clear a
; turn off led

inr e
inx h

; next digit scan code
; next location

dcr c
jnz scan1

; next column

pop d
pop b
pop h
ret

;---------- 8255 PPI system port I/O address --------------system_port_a: equ 10h
system_port_b: equ 11h
system_port_c: equ 12h
system_port_control: equ 13h

37

Appendix C UART Driver Routines
;---------- 16C550 compatible UART I/O address -----------; e.g. UM8250B, 16C450, 16C550
uart_buffer: equ 40h
uart_line_status: equ
uart_fifo:
equ
uart_lcr:
equ
uart_divisor_lsb: equ
uart_divisor_msb: equ
uart_scr:
equ

45h
42h
43h
40h
41h
47h

; initialize 16C550 uart to 9600 8n1 with 2MHz clock
; 2MHz/13 = 153846Hz
init_uart:
mvi a,83h
out uart_lcr
mvi
out
mvi
out
mvi
out
mvi
out

; set DLAB bit to access divider

a,13
uart_divisor_lsb
a,0
uart_divisor_msb ; 2MHz/13 = 153846 Hz
; 153846Hz/16 = 9615Hz
a,7
uart_fifo
; init fifo and clear all buffers
a,03h
uart_lcr
; clar DLAB

; check uart line status, if the byte is FF then no uart
;
;
xra a
out uart_scr
; check if there is uart
in uart_scr
cpi 0
jz found
xra a
sta uart_found
ret
found

mvi a,1
sta uart_found
ret

38

cout:

mov b,a

cout1:

in uart_line_status
ani 20h
jz cout1
mov a,b
out uart_buffer
ret

cin:

; save a

; transmitter ready?

; restore a

in uart_line_status
ani 1
jz cin
in uart_buffer
ret

; data available?

; print string terminated by 0
; input: HL
put_str:

mov a,m
; get A from [HL]
cpi 0
jnz put_str1
ret

put_str1: call cout
inx h
jp put_str

39

40

Appendix D Using NVRAM Bootable
;
;
;
;
;
;
;

MTK-85 8085 Microprocessor Training Kit
exp1.asm
Using 8254 to produce 30.52Hz interrupt signal at RST7.5

The 8254 counter0 was loaded with 0000 by system monitor.
The input clock to the 8254 is 2MHz, the OUT0 then
produces
; 2MHz/65536 = 30.52Hz interrupt at RST7.5!
;
CPU
"8085.TBL"
;CPU TABLE
HOF
"INT8"
;HEX FORMAT
gpio
equ 0
; enable NVRAM boot running
org 8000h
jmp start

; put instruction JMP to boot from
RAM

org 803ch

; interrupt vector of RST7.5
(relocated from 003CH)
jmp service_rst7.5
org 8100h
start:

mvi a,11111011b ; enable rst7.5
sim
; set interrupt mask register
ei
; enable interrupt
jmp $

; jump here

service_rst7.5:
lda
inr
sta
out
ei
ret

count
a
count
gpio

; increment count

; write to onboard LED

org 0e000h

41

count

dfs 1

; use RAM one byte for count
variable

end

42

Appendix E Machine code and 8085 Instructions

43

!""#$%&'()(*+,-&$#(./%#(+$%(*$#0/$&,(/1(2324(5$6789,7&/$6
MOVE, LOAD and STORE
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
5F
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D

MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV

B,B
B,C
B,D
B,E
B,H
B,L
B,M
B,A
C,B
C,C
C,D
C,E
C,H
C,L
C,M
C,A
D,B
D,C
D,D
D,E
D,H
D,L
D,M
D,A
E,B
E,C
E,D
E,E
E,H
E,L
E,M
E,A
H,B
H,C
H,D
H,E
H,H
H,L
H,M
H,A
L,B
L,C
L,D
L,E
L,H
L,L

6E
6F
70
71
72
73
74
75
77
78
79
7A
7B
7C
7D
7E
7F
3E
06
0E
16
1E
26
2E
36

nn
nn
nn
nn
nn
nn
nn
nn

01
11
21
31

nnnn
nnnn
nnnn
nnnn

02
12
0A
1A
32
3A
22
2A
EB

nnnn
nnnn
nnnn
nnnn

MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV

L,M
L,A
M,B
M,C
M,D
M,E
M,H
M,L
M,A
A,B
A,C
A,D
A,E
A,H
A,L
A,M
A,A

MVI
MVI
MVI
MVI
MVI
MVI
MVI
MVI

A,byte
B,byte
C,byte
D,byte
E,byte
H,byte
L,byte
M,byte

LXI
LXI
LXI
LXI

B,dble
D,dble
H,dble
SP,dble

STAX
STAX
LDAX
LDAX
STA
LDA
SHLD
LHLD
XCHG

B
D
B
D
adr
adr
adr
adr

PUSH
PUSH
PUSH
PUSH

B
D
H
PSW

STACK
C5
D5
E5
F5

C1
D1
E1
F1
E3
F9
33
3B

POP
POP
POP
POP
XTHL
SPHL
INX
DCX

B
D
H
PSW

C6 nn
CE nn

ADI
ACI

byte
byte

80
81
82
83
84
85
86
87
88
89
8A
8B
8C
8D
8E
8F

ADD
ADD
ADD
ADD
ADD
ADD
ADD
ADD
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC

B
C
D
E
H
L
M
A
B
C
D
E
H
L
M
A

D6 nn
DE nn

SUI
SBI

byte
byte

90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F

SUB
SUB
SUB
SUB
SUB
SUB
SUB
SUB
SBB
SBB
SBB
SBB
SBB
SBB
SBB
SBB

B
C
D
E
H
L
M
A
B
C
D
E
H
L
M
A

09
19
29
39

DAD
DAD
DAD
DAD

B
D
H
SP

ANI
XRI
ORI
ANA
ANA
ANA
ANA
ANA
ANA
ANA
ANA
XRA
XRA
XRA
XRA
XRA
XRA
XRA
XRA
ORA
ORA
ORA
ORA
ORA
ORA
ORA
ORA

byte
byte
byte
B
C
D
E
H
L
M
A
B
C
D
E
H
L
M
A
B
C
D
E
H
L
M
A

CPI
CMP
CMP
CMP
CMP
CMP
CMP
CMP
CMP

byte
B
C
D
E
H
L
M
A

LOGICAL
SP
SP

ARITHEMATICS

E6 nn
EE nn
F6 nn
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AA
AB
AC
AD
AE
AF
B0
B1
B2
B3
B4
B5
B6
B7

COMPARE
FE nn
B8
B9
BA
BB
BC
BD
BE
BF

ROTATE

07!
17
0F
1F

F7
FF

RLC
RAL
RRC
RAR

nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn

DB nn
D3 nn
JMP
JC
JNC
JZ
JNZ
JP
JM
JPE
JPO
PCHL

adr
adr
adr
adr
adr
adr
adr
adr
adr

CALL
CD
DC
D4
CC
C4
F4
FC
EC
E4

nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn

CALL
CC
CNC
CZ
CNZ
CP
CM
CPE
CPO

adr
adr
adr
adr
adr
adr
adr
adr
adr

RETURN
C9
D8
D0
C8
C0
F0
F8
E8
E0

RET
RC
RNC
RZ
RNZ
RP
RM
RPE
RPO

IN
OUT

04
0C
14
1C
24
2C
34
3C
03
13
23
05
0D
15
1D
25
2D
35
3D
0B
1B
2B

INR
INR
INR
INR
INR
INR
INR
INR
INX
INX
INX
DCR
DCR
DCR
DCR
DCR
DCR
DCR
DCR
DCX
DCX
DCX

2F
37
3F
27

CMA
STC
CMC
DAA

CONTROL
RST
RST
RST
RST
RST
RST

0
1
2
3
4
5

byte
byte

INCREMENT/DECREMENT

SPECIALS

RESTART
C7
CF
D7
DF
E7
EF

6
7

INPUT/OUTPUT

JUMP
C3
DA
D2
CA
C2
F2
FA
EA
E2
E9

RST
RST

00!
F3
FB
76
20
30

NOP
DI
EI
HLT
RIM
SIM

B
C
D
E
H
L
M
A
B
D
H
B
C
D
E
H
L
M
A
B
D
H

Appendix F Hardware schematic, Parts list

44

5

4

3

2

1

D[0..7]
A[0..7]

0x0000-0x7FFF
32kB ROM

D0
D1
D2
D3
D4
D5
D6
D7

D

2
3
4
5
6
7
8
9

ALE

1D
2D
3D
4D
5D
6D
7D
8D

11
1

1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q

10
9
8
7
6
5
4
3
25
24
21
23
2
26
27

A8
A9
A10
A11
A12
A13
A14

LE
OE

20

+5V

A0
A1
A2
A3
A4
A5
A6
A7

19
18
17
16
15
14
13
12

U1

A0
A1
A2
A3
A4
A5
A6
A7

U4

VCC
ROM_CE
/RD

74HC573

20
22
1

+5V

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14

O0
O1
O2
O3
O4
O5
O6
O7

11
12
13
15
16
17
18
19

0x8000-0xFFFF
32kB SRAM
D0
D1
D2
D3
D4
D5
D6
D7

U2

A0
A1
A2
A3
A4
A5
A6
A7

10
9
8
7
6
5
4
3
25
24
21
23
2
26
1

A8
A9
A10
A11
A12
A13
A14
RAM_CE
/RD
/WR

CE
OE
VPP

20
22
27

27C256

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14

D0
D1
D2
D3
D4
D5
D6
D7

11
12
13
15
16
17
18
19

U3
D0
D1
D2
D3
D4
D5
D6
D7

D0
D1
D2
D3
D4
D5
D6
D7

2
3
4
5
6
7
8
9

GPIO1

11
1
+5V
20

1D
2D
3D
4D
5D
6D
7D
8D

19
18
17
16
15
14
13
12

1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q

D

LE
OE
VCC

D1

D2

D3

D4

D5

D6

D7

74HC573

CE
OE
WE

1N5237A

U6
1
C2

4MHz
Q1

2
SID

+5V
30pF
R1
10k
S1 RESET

TRAP

5
6

RST5.5
RST6.5
RST7.5

9
8
7

INTR
R2
100

10
INTA

+

C3
10uF
+5V

3

B

X1

11

S0

29

S1

33
39

R4 10k
READY

KIA7042

2
Q2

35

X2
SID
TRAP
RST 5.5
RST 6.5
RST 7.5
INTR

AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
A8
A9
A10
A11
A12
A13
A14
A15

INTA
S0
S1
HOLD
READY

ALE
WR
RD
IO/M
RST-OT
CLKO
SOD
HLDA

12
13
14
15
16
17
18
19
21
22
23
24
25
26
27
28

S0
S1

D0
D1
D2
D3
D4
D5
D6
D7

A15

2
3
4
5
6
7
8
9

/RD
/WR

1
11

A4
A5
A6
A7
IO/M
A8
A9
A10
A11
A12
A13
A14
A15

I
I
I
I
I
I
I
I

I/O/Q
I/O/Q
I/O/Q
I/O/Q
I/O/Q
I/O/Q
I/O/Q
I/O/Q

SYSTEM_PPI
GPIO1
CTC
USER_PPI
UART
LCD_E

U7A

D0
D1
D2
D3
D4
D5
D6
D7
/RD
/WR
IO/M
SID
ALE
SOD
S0
S1
CLKOUT
READY
RESET_OUT

1

SID
+5V

U9
1
2

ALE

8

A

9

A
B

CLK
CLR

QA
QB
QC
QD
QE
QF
QG
QH

3
4
5
6
10
11
12
13

+5V
TRAP
R8
10k

74HC164
U8F
12

13

TRACE

VCC

5
3

4

2
4001

4001

ALE

30
31
32
34
3
37
4
38

U8A

WR
RD
RESET_OUT
CLKOUT

CLKOUT

+5V

reset

SW1
1
2
3
4

R3
10k

SOD
HLDA

U7C

*RST5.5
*RST6.5

8
7
6
5

1

RST5.5

2

JP1
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39

2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40

U8B
3

4

RST6.5

6

RST7.5

8

INTR

9

A0
A1
A2
A3
A4
A5
A6
A7

SW2

4001

74LS14
U8C

2
1
3

5

SW SPDT
U7D
12

OUT1
*RST5.5 OUT2
*RST6.5
*RST7.5
*INTR
INTA

74LS14
U8D

*RST7.5

11

*INTR

13

9

4001
R6
10k

74LS14
U8E

D10

+5V
HOLD
HLDA

B

74LS14

SW DIP-4

11

R7

330

+5V
A

10

+5V
74LS14

LED
Title
8085 Microprocesor Kit

HEADER 20X2
Size
B

Designed by Wichit Sirichote, wichit.sirichote@gmail.com
4

VSS

6

74LS14

5

VCC

U7B

1
GAL16V8B

10
10k

+5V

8

R5

C

A2

A2

RAM_CE
ROM_CE

12
13
14
15
16
17
18
19

I/CLK
I/OE

MSM80C85A

+5V

A1

A1

U5

RST-IN

A0

A0

memory & i/o decoder
C

36

D0
D1
D2
D3
D4
D5
D6
D7

D9
LED 3mm

HM62256B
A[8..14]

30pF C1

D0
D1
D2
D3
D4
D5
D6
D7

D8

3

2

Date:

Document Number

Friday, April 15, 2016

Rev
2
Sheet
1

1

of

3

4

3

2

1

U10

U11

LTC-4727JR

DIGIT4

4

L1L2L3

4

8

2

1

LTC-4727JR

L1L2L3

DIGIT3

74LS244

D

6

R-PACK

1G
2G

A
B
C
D
E
F
G
DP
DIGIT1

A
B
C
D
E
F
G
DP

14
16
13
3
5
11
15
7

DIGIT2

A
B
C
D
E
F
G
DP

1

14
16
13
3
5
11
15
7

DIGIT4

A
B
C
D
E
F
G
DP

8

1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4

16
15
14
13
12
11
10
9

DIGIT3

1A1
1A2
1A3
1A4
2A1
2A2
2A3
2A4

1
2
3
4
5
6
7
8

6

1
19

R9
18
16
14
12
9
7
5
3

DIGIT1

D

2
4
6
8
11
13
15
17

DIGIT2

U12

PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7

2

5

U13

PC0
PC1
PC2
PC3

15
14
13
12

A
B
C
D

0
1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
9
10
11

C

SPEAKER

74LS145

SW3

TRACE
SW4

D0
D1
D2
D3
D4
D5
D6
D7

8255
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0

B

6
35
8
9
36
5

SYSTEM_PPI
A1
A0

reset

WR
RD
D7
D6
D5
D4
D3
D2
D1
D0

27
28
29
30
31
32
33
34

CS
RESET
A1
A0
WR
RD
D7
D6
D5
D4
D3
D2
D1
D0
U14

PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0

25
24
23
22
21
20
19
18

PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0

10
11
12
13
17
16
15
14

PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0

37
38
39
40
1
2
3
4

PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0

1

SW5
2

1

C
SW9

SW6
2

1

SW7
2

1

1

D

E

F

SW10

SW11

SW12

2

USER

OPTION

2

R10
SPEAKER

SW8
1

2

1

2

1

8

2

1

9

SW14
1

1

2

1

A

SW15
2

SW16
2

1

2

4.7k

1

1

6

7

SW18

SW19

SW20

SW21

D11

2

PA7

330

TONE

USER1

2

5

R11

LS1

B

SW13

SW17
2

VCC

MODE

B

4

R12

SPEAKER
+5V

10

1

2

1

0

1

SW26
1

2

GO

1

2

1

2

SW23
2

INC

A

2

1

SW22
1

3

SW24
2

1

SW25
2

1

STEP

HOME

SW27

SW28

SW29

2

1

ALT

2

ADDR

10k RESISTOR SIP 9
2
3
4
5
6
7
8
9

1

3

+5V

VCC

VCC
VSS
A

A1

A1

A2

A2

Title
8085 Microprocesssor Kit

Date:
4

VCC
1

A0

A0
2

DATA

R13

C

2

DEC
1

PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7

2

Size
B
5

Q3
BC557

2

PA6

3

D0
D1
D2
D3
D4
D5
D6
D7

1

C

2

Document Number

Friday, April 15, 2016

Rev
2
Sheet
1

2

of

3

5

4

3

2

1

D[0..7]

16x2 text LCD interface

+5V

CLKOUT
D

D

JR1
U15
8
7
6
5
4
3
2
1
22
23
19
20

A0
A1

21

CTC

D0
D1
D2
D3
D4
D5
D6
D7

WR

A0
A1
A2

OUT1

18
16
17

CLK2
G2
OUT2

21
18
22
19

RD

15
14
13

CLK1
G1
OUT1

RD
WR
A0
A1

UART

9
11
10

CLK0
G0
OUT0

12
13
14

D0
D1
D2
D3
D4
D5
D6
D7

OUT2

CS
8254

C

+5V

28
27
26
1
2
3
4
5
6
7
8

VCC

25
35

reset

16
17

VCC
D0
D1
D2
D3
D4
D5
D6
D7

VSS

A0

A0

D0
D1
D2
D3
D4
D5
D6
D7

A1

A1

9

CS0
CS1
CS2

OUT1
OUT2
INT

RD
WR
RD
WR

TXD
RTS
DTR

A0
A1
A2

RXD
DCD
DSR
CTS
RI

D0
D1
D2
D3
D4
D5
D6
D7

34
31
30

16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

TXD
RTS

11
32
33

RXD
DCD

10
38
37
36
39

5

D7
D6
D5
D4
D3
D2
D1
D0
R/W
RS

CONN RECT 16

LCD_E

A1
A0

+5V
1

CSOUT
DDIS
NC

ADS
RESET

24
23
29

3
C

R15
10K

XTAL1/CLK
XTAL2
RCLK

BAUDOUT

15

8250
+5V

A2

10uF C5

10uF 10V
C4

+

A2

+5V

R14

16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

+

D0
D1
D2
D3
D4
D5
D6
D7
RD
WR

+5V

U16

2

*RST7.5

U17

C9
100nF

+

C10
10uF

+

C11
10uF

6
C6

R16

C+
C1C2+
C2-

V-

1
3
4
5

10uF
C7

10uF

B

14
7
13
8

T1OUT
T2OUT
R1IN
R2IN

T1IN
T2IN
R1OUT
R2OUT

11
10
12
9

TXD

RTS

RXD

DCD

MAX232A

SUB-D 9, Male (cross cable)
D12

V+

+

5
9
4
8
3
7
2
6
1

B

C8
100nF

2

VB1

+5V

+

+5V

2k

POWER
+5V
U18
LM7805/TO

VCC
3

1
C14

10uF 16V
C15
0.1uF

C17
0.1uF

C18
0.1uF

+
C12

C19
0.1uF

VIN

J1

D13
1

2
+

C20
0.1uF

1
1N4007

DC input

1

C13
1000uF 16V

2

TP2

C16
0.1uF

VOUT
GND

+5V

2

TP1

A

GND

DC2

1

A

0.1uF
Title
8085 Microprocessor Kit
Size
B
Date:
5

4

3

2

Document Number

Friday, April 15, 2016

Rev
2
Sheet
1

3

of

3

PARTS LIST
Resistors (all resistors are 1/8W +/-5%)
Semiconductors
U1
27C256, 32kM EPROM
U2
HM62256B, 32kB SRAM
U4,U3 74HC573, 8-bit LATCH
U5
GAL16V8B, PLD
U6
MSM80C85A, Microprocessor
U7
4001, Nor gate
U8
74LS14, hex inverter
U9
74HC164, shift register
U11,U10 LTC-4727JR, 7-segment LED
U12 74LS244, tri-state driver
U13 74LS145, BCD to decimal
U14 8255, PPI
U15 8250, UART
U16 8254, CTC
U17 MAX232A
U18 LM7805/TO, voltage regulator
D1,D2,D4,D5,D6,D7,D8,D10 LED
D3
LED 3mm
D9
1N5227A
D11 TONE LED
D12 POWER LED
D13 1N4007
Q2
KIA7042
Q3
BC557
Capacitors
C1,C2 30pF, ceramic cap
C3,C5,C6,C7,C10,C11 10uF
C4
10uF 10V
C8,C9 100nF
C12 10uF 16V, electrolytic
C13 1000uF 16V, electrolytic
C14,C15,C16,C17,C18 0.1uF
C19,C20 0.1uF

R1,R3,R4,R5,R6,R8,R15
10K
R2
100 Ohms
R11,R7 330 Ohms
R9
100x8
R10 4.7k
R12 10
R13 10k RESISTOR SIP 9
R14 5 Ohms
R16 1k
Additional parts
JP1
JR1
J1
LS1
Q1

HEADER 20X2
CONN RECT 16
DC input
SPEAKER
4MHz

SW1 SW DIP-4, DIP switch
SW2 SW SPDT
SW3,SW4,SW5,SW6,SW7,SW8,SW
PUSHBUTTONSPST,SW9,SW10,SW11,SW12,SW13,
SW14,SW15,SW16,SW17,SW18,
SW19,SW20,SW21,SW22,SW23,
SW24,SW25,SW26,SW27,SW28,
SW29
S1
RESET
TP1 +5V
TP2 GND
VB1 SUB-D 9, Male (cross cable)
PCB double side plate through hole
LED cover Clear RED color 0.8mm acrylic
plastic
Keyboard sticker printable SVG file

45

46

Appendix G Monitor source code listing

47

B8085.LST
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
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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76

29/12/2559 12:32
;----------------------------------------------------------------; B8085.ASM
; monitor program for MTK-85 8085 MICROPROCESSOT TRAINING KIT
; COPYTIGHT (C) 2007-2015 BY WICHIT SIRICHOTE, kswichit@kmitl.ac.th
;
; source file was assembled with C32 Cross Assembler V3.0
;
; 18 May 2007 add insert byte, ALT E
;
delete byte, ALT D
;
click sound when key pressed
;
; 8 March 2015 remove repeat key
;
modified address and data entry mode
; 3 April 2016 replace buzzer with small speaker for tone experiment
;
add beep/no beep with ALT F press
; 16 April 2016 add delay after no beep
;
;-----------------------------------------------------------------

0000
0000

CPU
HOF

"8085.TBL"
"INT8"

;CPU TABLE
;HEX FORMAT

; ---------- onboard GPIO -------------------------------------0000 =

gpio

equ 0 ; D0-D3 is 4-bit output port, D4-D7 is 4-bit input port

;---------- 8255 PPI system port I/O address ---------------------0010
0011
0012
0013

=
=
=
=

system_port_a: equ 10h
system_port_b: equ 11h
system_port_c: equ 12h
system_port_control: equ 13h
;-------------------- 8254 counter/timer --------------------------

0020
0021
0022
0023

=
=
=
=

0034 =

counter0_8254 equ 20h
counter1_8254 equ 21h
counter2_8254 equ 22h
control_8254 equ 23h
control_word_8254 equ 00110100B

; mode 0, counter0

;---------- 8255 PPI user port I/O address -----------------------0030
0031
0032
0033

=
=
=
=

user_port_a: equ 30h
user_port_b: equ 31h
user_port_c: equ 32h
user_port_control: equ 33h
;---------- 16C550 compatible UART I/O address -------------------; e.g., UM8250B, 16C450, 16C550

0040
0045
0042
0043
0040
0041
0047

=
=
=
=
=
=
=

uart_buffer: equ 40h
uart_line_status: equ
uart_fifo:
equ
uart_lcr:
equ
uart_divisor_lsb: equ
uart_divisor_msb: equ
uart_scr:
equ

45h
42h
43h
40h
41h
47h

;------------------- onboard LCD registers -----------------------0050
0052
0051
0053
0080

=
=
=
=
=

command_write
command_read
data_write
data_read
busy

equ
equ
equ
equ
equ

0009 =
0000 =

TAB
RS

9
0

000D =

cr: equ 0dh

EQU
EQU

50h
52h
51h
53h
80h
; ASCII TAB
; terminator

Page 1 of 64

B8085.LST
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
110
111
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
139
140
141
142
143
144
145
146
147
148
149
150
151
152

29/12/2559 12:32

000A =
0020 =

lf: equ 0ah
sp: equ 20h

F000 =

system_ram equ 0f000h
;system_stack equ 0ffffh

8100 =

home_address

equ 8100h

0000 =

rom

equ

0 ;8000h

8000 =

my_rom

equ

8000h

; change to 8000 for testing under RAM
; change to 0000 for rom programming

0000
0000 C30001

ORG rom
JMP START

0008
0008 C36102

ORG rom+8
jmp monitor_call

; RST 1

opcode is CF

ORG rom+10h
jmp service_rst2

; RST 2

used for testing RST 7

0010
;
0010 C31080

; reset vector

jmp my_rom+10h

0018
0018 C31880

ORG rom+18h
jmp my_rom+18h

; DF RST 3 for testing monitor call function

; jmp monitor_call
0020
0020 C32080

ORG rom+20h
jmp my_rom+20h

0024

ORG rom+24h
; jmp my_rom+24h
jmp service_trap

0024 C3DD02

; RST 4

; sing step running service routine

0028
0028 C32880

ORG rom+28h
jmp my_rom+28h

; RST 5

002C
002C C32C80

ORG rom+2ch
jmp my_rom+2ch

; relocate RST5.5 to external ram

0030
0030 C33080

ORG rom+30h
jmp my_rom+30h

; relocate RST 6

0034
0034 C33480

ORG rom+34h
jmp my_rom+34h

; relocate RST6.5 to external ram

0038
0038 C39302

ORG ROM+38H
jmp service_rst7

003C
003C C33C80

ORG rom+3ch
jmp my_rom+3ch

0100

ORG rom+100h

0100
0101
0104
0107

F3
3179F0
2199F0
2234F0

START

; RST 7 service jump back to monitor
; relocate RST7.5 to external ram

di
lxi sp,system_stack+32
lxi h,user_stack+32
shld user_SP

; point to top of system stack
; point to top of user stack

010A 3E90
010C D313

MVI A,90H
OUT system_port_control

010E 3EF0
0110 D312

mvi a,0f0h
; disable trap
out system_port_c

0112 CD0612

call init_uart

0115 CD0802
0118 21A41D

call init_lcd
lxi h,prompt2
Page 2 of 64

B8085.LST
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228

011B
011E
0121
0124
0127

29/12/2559 12:32
CD1A02
210100
CD2A02
21B91D
CD1A02

call put_str_lcd
lxi h,01
call goto_xy
lxi h,text3
call put_str_lcd

012A CD8F01

call init_8254
; NVRAM booting
; if location 8000H has C3 opcode then jump to 8000H
;
if user press USER1 with RESET put 00 to 8000H
;
ans skip booting

012D DB10
012F E680
0131 CA4101

in system_port_a
ani 80h
jz skip_boot

0134
0137
0139
013C
013F
0140

lda 8000H
cpi 0c3h
jnz skip_boot
lxi h,8000h
push h
ret
; jump to NVRAM

3A0080
FEC3
C24101
210080
E5
C9

0141 AF
0142 320080
0145 3227F0
0148
014B
014D
0150
0152

skip_boot: xra a
; write 00 to 8000H
sta 8000H
sta counter1
; clear counter1

3A29F0
FE24
CA6401
3E24
3229F0

lda
cpi
jz
mvi
sta

warm_code
"$"
skip_cold_boot
a,"$"
warm_code

0155 CD2D06

call test_buzzer

0158 3EFF
015A D300

mvi a,0ffh
out gpio

015C CD760B

call cold_boot

015F 3E00
0161 3224F0
0164

; make GPIO LED on

mvi a, 0
sta beep_flag
skip_cold_boot:

0164 210081
0167 222AF0
016A 223CF0

lxi h,home_address
shld user_PC
shld pointer

016D 3A25F0
0170 FE00
0172 CA7B01

lda uart_found
cpi 0
jz skip_send_prompt

0175 CDB312

call send_prompt3

0178 CD3A0D

call send_prompt

017B

skip_send_prompt:

017B AF
017C D300

xra a
out gpio

017E 3E00
0180 3226F0
0183 CDBE0A

mvi a,0
sta entry_mode
call read_memory

0186 CD7E0C
0189 CD8105
018C F28601

main:

; turn LED off

call scan_key
call key_execute
jp main

Page 3 of 64

; set data entry mode

B8085.LST
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
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

29/12/2559 12:32
;---------------- initialize counter0 for RST7.5 interrupt ----------------

018F
0191
0193
0194
0196
0198

3E34
D323
AF
D320
D320
C9

init_8254:

mvi
out
xra
out
out
ret

a, control_word_8254
control_8254
a
counter0_8254
counter0_8254

; convert 8-bit unsigned in A to ASCII string in line_buffer
; entry: A
0199
0199 1E00

bin2ascii:

019B
019D
01A0
01A2
01A3

FE64
DAA601
D664
1C
C39B01

bin1

cpi
jc
sui
inr
jmp

100
bin2
100
e
bin1

01A6
01A7
01A8
01AA
01AD
01AE

57
7B
C630
3247F0
7A
1E00

bin2:

mov
mov
adi
sta
mov
mvi

d,a
a,e
"0"
line_buffer
a,d
e,0

01B0
01B2
01B5
01B7
01B8

FE0A
DABB01
D60A
1C
C3B001

bin3:

cpi
jc
sui
inr
jmp

10
bin4
10
e
bin3

01BB
01BC
01BD
01BF
01C2
01C3
01C5
01C8

57
7B
C630
3248F0
7A
C630
3249F0
C9

bin4:

mov
mov
adi
sta
mov
adi
sta
ret

d,a
a,e
"0"
line_buffer+1
a,d
"0"
line_buffer+2

mvi e,0

; print 8-bit unsigned decimal to terminal
; entry: A
01C9
01CC
01CF
01D1
01D4
01D7
01DA
01DD
01E0
01E3

CD9901
3A47F0
FE30
CAE401
CD2F12
3A48F0
CD2F12
3A49F0
CD2F12
C9

pint8u:

call bin2ascii
lda line_buffer
cpi "0"
jz pint1
call cout
lda line_buffer+1
call cout
lda line_buffer+2
call cout
ret

01E4
01E7
01E9
01EC

3A48F0
FE30
CAEF01
CD2F12

pint1:

lda line_buffer+1
cpi "0"
jz pint2
call cout

01EF 3A49F0
01F2 CD2F12
01F5 C9

pint2:

lda line_buffer+2
call cout
ret

; convert 16-bit unsigned integer to ASCII code stored in line_buffer
; entry: HL

Page 4 of 64

B8085.LST
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
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

29/12/2559 12:32

;--------------------- LCD driver routines -------------------------------01F6 F5

lcd_ready:

01F7
01F9
01FB
01FE

lcd_ready1: in command_read
ani 80h
jnz lcd_ready1
pop psw

DB52
E680
C2F701
F1

01FF C9

push psw

; wait until lcd ready

ret

0200
0203
0205
0207

CDF601
3E01
D350
C9

clear_lcd:

call lcd_ready
mvi a,1
out command_write
exit_clear: ret

0208
020B
020D
020F
0212
0214
0216

CDF601
3E38
D350
CDF601
3E0C
D350
CD0002

init_lcd: call lcd_ready
mvi a,38h
out command_write
call lcd_ready
mvi a, 0ch
out command_write
call clear_lcd

0219 C9

ret
; print ASCII text on LCD
; entry: HL pointer with 0 for end of string

021A
021B
021D
0220

7E
FE00
C22102
C9

0221
0221
0224
0226
0227

put_str_lcd: mov a,m
; get A from [HL]
cpi 0
jnz put_str_lcd1
ret
put_str_lcd1:

CDF601
D351
23
F21A02

call lcd_ready
out data_write
inx h
jp put_str_lcd
; goto_xy set cursor location on lcd
; entry: HL: H = x, L = y

022A
022D
022E
0230
0233
0234
0236
0238

CDF601
7D
FE00
C23902
7C
C680
D350
C9

goto_xy:

call lcd_ready
mov a,l
cpi 0
jnz goto_xy1
mov a,h
adi 80h
out command_write
ret

0239
023B
023E
023F
0241
0243

FE01
C24402
7C
C6C0
D350
C9

goto_xy1: cpi
jnz
mov
adi
out
ret

1
goto_xy2
a,h
0c0h
command_write

0244
0246
0249
024A
024C
024E

FE02
C24F02
7C
C694
D350
C9

goto_xy2: cpi
jnz
mov
adi
out
ret

2
goto_xy3
a,h
094h
command_write

024F
0251
0254
0255
0257

FE03
C25A02
7C
C6D4
D350

goto_xy3: cpi
jnz
mov
adi
out

3
goto_xy4
a,h
0d4h
command_write
Page 5 of 64

B8085.LST
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
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456

29/12/2559 12:32

0259 C9

ret

025A C9

goto_xy4: ret
; put_ch_lcd put character to lcd
; entry: A

025B CDF601
025E D351
0260 C9

put_ch_lcd: call lcd_ready
out data_write
ret
;-------------------------------------------------------------------;
;
;
;
;

0261 E5
0262 F5
0263 D5

monitor call entry
entry: E = monitor call number 0-255
calling monitor function is made with RST 1 command after loading the
regsiter E with call number
destroy: BC user must save it in stack memory

monitor_call:

push h
push psw
push d

0264 7B
0265 07
0266 5F

mov a,e
rlc
mov e,a

0267
026A
026C
026D
026E
026F

lxi
mvi
dad
mov
inx
mov

217502
1600
19
4E
23
46

h,vector_table
d,0
d
; get location in jump table
c,m
h
b,m

0270 D1
0271 F1
0272 E1

pop d
pop psw
pop h

0273 C5

push b

0274 C9

ret

0275
0275
0277
0279
027B
027D
027F
0281
0283
0285
0287
0289
028B
028D
028F
0291

; get call number
; x2
; put it back

; push address into top of stack
; jump to monitor call function

vector_table:
A00B
0006
760B
AE0C
3B12
2F12
5812
0802
F601
0002
2A02
1A02
5B02
F205
C901

dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl
dwl

demo ; #0 running LED with HL pointer
delay ; #1 simple delay routine
cold_boot ; #2 show 8085 running
scan ; #3 scan display one cycle
cin
; #4 get byte from console
cout ; #5 print byte to console
put_str ; #6 print string with 0 terminator to console
init_lcd ; #7 initialize lcd
lcd_ready ; #8 wait until lcd is ready
clear_lcd ; #9 clear lcd display
goto_xy
; #10 set lcd cursor position
put_str_lcd ; #11 print ASCII string on lcd
put_ch_lcd ; #12 print ASCII letter on lcd
test_led
; #13 run LED onboard
pint8u
; #14 print 8-bit unsigned to terminal

; save CPU registers to stack and write them to user registers
;
0293
0293 F5
0294 C5
0295 D5
0296
0297
029A
029B
029E
029F
02A2

E1
2230F0
E1
222EF0
E1
222CF0
E1

service_rst7:
push psw
push b
push d
pop h
shld user_DE
pop h
shld user_BC
pop h
shld user_AF
pop h
Page 6 of 64

B8085.LST
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532

29/12/2559 12:32

02A3 222AF0

shld user_PC

; store next PC

02A6 210000
02A9 39
02AA 2234F0

lxi h,0000h
dad sp
shld user_SP

02AD CDBE0A
02B0 CD540F

call read_memory
call register_display1

02B3 2A57F0

lhld save_stack

02B6 F9

sphl

02B7 C9

ret

; get SP
; save user SP

; restore system stack

; test diplay register after break
; RST 2 opcode is D7
; later will be changed to RST 7
02B8
02B8 F5
02B9 C5
02BA D5
02BB
02BC
02BF
02C0
02C3
02C4
02C7

service_rst2:
push psw
push b
push d

E1
2230F0
E1
222EF0
E1
222CF0
E1

pop h
shld user_DE
pop h
shld user_BC
pop h
shld user_AF
pop h

02C8 222AF0

shld user_PC

02CB 210000
02CE 39

lxi h,0000h
dad sp

02CF 2234F0

shld user_SP

02D2 CDBE0A
02D5 CD540F

call read_memory
call register_display1

02D8 2A57F0

lhld save_stack

02DB F9

sphl

02DC C9

ret

; store next PC
; get content of SP
; save user SP

; restore system stack

; service trap for single step running
; disable trap input by setting system port c.6
; save CPU registers to user registers
02DD
02DD F5

service_trap:
push psw

; save A and Flag

02DE 3EFF
02E0 D312

mvi a,0ffh
out system_port_c ; turn trap off by clearing shift register

02E2 C5
02E3 D5
02E4 E5

push b
push d
push h

02E5
02E6
02E9
02EA
02ED
02EE
02F1
02F2

pop h
shld user_HL
pop h
shld user_DE
pop h
shld user_BC
pop h
shld user_AF

E1
2232F0
E1
2230F0
E1
222EF0
E1
222CF0

; save HL

Page 7 of 64

B8085.LST
533
534
535
536
537
538
539
540
541
542
543
544
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

29/12/2559 12:32

02F5 E1
02F6 222AF0

pop h
shld user_PC

02F9 210000
02FC 39
02FD 2234F0

lxi h,0
dad sp
shld user_SP

0300 CDBE0A

call read_memory

0303
0306
0308
030B

lda uart_found
cpi 0
jz skip1
call register_display1

3A25F0
FE00
CA0E03
CD540F

030E
030E 2A57F0

; store next PC

; save user SP

skip1:
lhld save_stack

0311 F9

sphl

; restore system stack

0312 C9

ret

; jump back to main body

; disassemble machine code into mnemonic
0313
0313 3A22F0
0316 FE64
0318 C23903

disassemble1:
lda command
cpi "d"
jnz exit_disassemble

031B 21A11E
031E CD5812

lxi h,disassemble_text
call put_str

0321 CDDA12
0324 0E10

call new_line
mvi c,16

0326 C5

dis2:

; 16 lines

push b

0327 CDDA12

call new_line

032A CDB003

call d_disassemble

032D C1
032E 0D
032F C22603

pop b
dcr c
jnz dis2

0332 CDDA12
0335 CD3A0D
0338 C9

call new_Line
call send_prompt
ret

0339 C9

exit_disassemble: ret
; disassemble opcode to mnemonic
; entry: user_PC
; exit: user_PC = next address

033A 2A2AF0

disassemble:

lhld user_PC

033D E5

push h

033E
033F
0342
0343
0346

mov a,h
call out2x
mov a,l
call out2x
call space

7C
CDCB12
7D
CDCB12
CDE512

0349 7E
034A CD2604
034D 4F
034E
034F
0352
0353

7E
CDCB12
23
0D

mov a,m
; get opcode
call get_number_of_byte
mov c,a
disassem3:

mov a,m
call out2x
inx h
dcr c
Page 8 of 64

B8085.LST
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
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684

29/12/2559 12:32

0354 C24E03

jnz disassem3

0357 E1

pop h

0358
0359
035C
035E

mov a,m
call get_number_of_byte
cpi 1
jnz one_tab

7E
CD2604
FE01
C26603

0361 3E09
0363 CD2F12
0366 3E09
0368 CD2F12

one_tab:

mvi a,tab
call cout

; print two tabs for one byte opcode

mvi a,tab
call cout

; else only one tab

036B E5

push h

036C 7E

mov a,m

036D F5

push psw

036E 210000
0371 6F

lxi h,0000h
mov l,a

0372 29

dad h

0373 5D
0374 54

mov e,l
mov d,h

0375
0378
0379
037A
037B

lxi
dad
mov
inx
mov

210B15
19
5E
23
56

; get opcode

; clear HL
; HL = HLx2

h,ins_table
d
e,m
h
d,m

; ADD HL,DE

037C 6B
037D 62

mov l,e
mov h,d

037E CD5812

call put_str

0381 F1
0382 E1

pop psw
pop h

0383
0386
0388
038B
038C
038F

CD2604
FE01
C29003
23
222AF0
C9

call get_number_of_byte
cpi 1
jnz disassem1
inx h
shld user_PC
ret

0390
0392
0395
0396
0397
039A
039B
039E

FE02
C29F03
23
7E
CDCB12
23
222AF0
C9

disassem1:

cpi 2
jnz disassem2
inx h
mov a,m
call out2x
inx h
shld user_PC
ret

039F
03A0
03A1
03A2
03A5
03A6
03A7
03AA
03AB
03AC
03AF

23
23
7E
CDCB12
2B
7E
CDCB12
23
23
222AF0
C9

disassem2:

inx h
inx h
mov a,m
call out2x
dcx h
mov a,m
call out2x
inx h
inx h
shld user_PC
ret

; disassemble opcode to mnemonic with command 'd'
; entry: pointer
; exit: pointer = next address
03B0 2A3CF0

d_disassemble:

lhld pointer
Page 9 of 64

B8085.LST
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760

29/12/2559 12:32

03B3 E5

push h

03B4
03B5
03B8
03B9
03BC

mov a,h
call out2x
mov a,l
call out2x
call space

7C
CDCB12
7D
CDCB12
CDE512

03BF 7E
03C0 CD2604
03C3 4F
03C4
03C5
03C8
03C9
03CA

7E
CDCB12
23
0D
C2C403

mov a,m
; get opcode
call get_number_of_byte
mov c,a
d_disassem3:

mov a,m
call out2x
inx h
dcr c
jnz d_disassem3

03CD E1

pop h

03CE
03CF
03D2
03D4

mov a,m
call get_number_of_byte
cpi 1
jnz d_one_tab

7E
CD2604
FE01
C2DC03

03D7 3E09
03D9 CD2F12
03DC 3E09
03DE CD2F12

mvi a,tab
call cout
d_one_tab:

mvi a,tab
call cout

03E1 E5

push h

03E2 7E

mov a,m

03E3 F5

push psw

03E4 210000
03E7 6F

lxi h,0000h
mov l,a

03E8 29

dad h

03E9 5D
03EA 54

mov e,l
mov d,h

03EB
03EE
03EF
03F0
03F1

lxi
dad
mov
inx
mov

210B15
19
5E
23
56

; print two tabs for one byte opcode

h,ins_table
d
e,m
h
d,m

; else only one tab

; get opcode

; clear HL
; HL = HLx2

; ADD HL,DE

03F2 6B
03F3 62

mov l,e
mov h,d

03F4 CD5812

call put_str

03F7 F1
03F8 E1

pop psw
pop h

03F9
03FC
03FE
0401
0402
0405

CD2604
FE01
C20604
23
223CF0
C9

call get_number_of_byte
cpi 1
jnz d_disassem1
inx h
shld pointer
ret

0406
0408
040B
040C
040D
0410
0411
0414

FE02
C21504
23
7E
CDCB12
23
223CF0
C9

d_disassem1:

cpi 2
jnz d_disassem2
inx h
mov a,m
call out2x
inx h
shld pointer
ret
Page 10 of 64

B8085.LST
761
762
763
764
765
766
767
768
769
770
771
772
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

0415
0416
0417
0418
041B
041C
041D
0420
0421
0422
0425

29/12/2559 12:32
23
23
7E
CDCB12
2B
7E
CDCB12
23
23
223CF0
C9

d_disassem2:

inx h
inx h
mov a,m
call out2x
dcx h
mov a,m
call out2x
inx h
inx h
shld pointer
ret

; get number of byte
; entry: A = OPCODE
; exit: A = number of byte, 1,2,3
;
0 = undefined opcode
0426

get_number_of_byte:

0426
0428
042B
042D

FE01
C22E04
3E03
C9

042E
0430
0433
0435

FE06
C23604
3E02
C9

number1:

cpi 6
jnz number2
mvi a,2
ret

0436
0438
043B
043D

FE0E
C23E04
3E02
C9

number2:

cpi 0eh
jnz number3
mvi a,2
ret

043E
0440
0443
0445

FE11
C24604
3E03
C9

number3:

cpi 11h
jnz number4
mvi a,3
ret

0446
0448
044B
044D

FE16
C24E04
3E02
C9

number4:

cpi 16h
jnz number5
mvi a,2
ret

044E
0450
0453
0455

FE1E
C25604
3E02
C9

number5:

cpi 1eh
jnz number6
mvi a,2
ret

0456
0458
045B
045D

FE21
C25E04
3E03
C9

number6:

cpi 21h
jnz number7
mvi a,3
ret

045E
0460
0463
0465

FE22
C26604
3E03
C9

number7:

cpi 22h
jnz number8
mvi a,3
ret

0466
0468
046B
046D

FE26
C26E04
3E02
C9

number8:

cpi 26h
jnz number9
mvi a,2
ret

046E
0470
0473
0475

FE2A
C27604
3E03
C9

number9:

cpi 2ah
jnz number10
mvi a,3
ret

0476
0478
047B
047D

FE2E
C27E04
3E02
C9

number10:

cpi 2eh
jnz number11
mvi a,2
ret

number11:

cpi 31h

047E FE31

cpi 01
jnz number1
mvi a,3
ret

Page 11 of 64

B8085.LST
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
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912

29/12/2559 12:32

0480 C28604
0483 3E03
0485 C9

jnz number12
mvi a,3
ret

0486
0488
048B
048D

FE32
C28E04
3E03
C9

number12:

cpi 32h
jnz number13
mvi a,3
ret

048E
0490
0493
0495

FE36
C29604
3E03
C9

number13:

cpi 36h
jnz number14
mvi a,3
ret

0496
0498
049B
049D

FE3A
C29E04
3E03
C9

number14:

cpi 3ah
jnz number15
mvi a,3
ret

049E
04A0
04A3
04A5

FE3E
C2A604
3E02
C9

number15:

cpi 3eh
jnz number16
mvi a,2
ret

04A6
04A8
04AB
04AD

FEC2
C2AE04
3E03
C9

number16:

cpi 0c2h
jnz number17
mvi a,3
ret

04AE
04B0
04B3
04B5

FEC3
C2B604
3E03
C9

number17:

cpi 0c3h
jnz number18
mvi a,3
ret

04B6
04B8
04BB
04BD

FEC4
C2BE04
3E03
C9

number18:

cpi 0c4h
jnz number19
mvi a,3
ret

04BE
04C0
04C3
04C5

FEC6
C2C604
3E02
C9

number19:

cpi 0c6h
jnz number20
mvi a,2
ret

04C6
04C8
04CB
04CD

FECA
C2CE04
3E03
C9

number20:

cpi 0cah
jnz number21
mvi a,3
ret

04CE
04D0
04D3
04D5

FECC
C2D604
3E03
C9

number21:

cpi 0cch
jnz number22
mvi a,3
ret

04D6
04D8
04DB
04DD

FECD
C2DE04
3E03
C9

number22:

cpi 0cdh
jnz number23
mvi a,3
ret

04DE
04E0
04E3
04E5

FECE
C2E604
3E02
C9

number23:

cpi 0ceh
jnz number24
mvi a,2
ret

04E6
04E8
04EB
04ED

FED2
C2EE04
3E03
C9

number24:

cpi 0d2h
jnz number25
mvi a,3
ret

04EE
04F0
04F3
04F5

FED3
C2F604
3E02
C9

number25:

cpi 0d3h
jnz number26
mvi a,2
ret

04F6 FED4
04F8 C2FE04

number26:

cpi 0d4h
jnz number27
Page 12 of 64

B8085.LST
913
914
915
916
917
918
919
920
921
922
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
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988

29/12/2559 12:32

04FB 3E03
04FD C9

mvi a,3
ret

04FE
0500
0503
0505

FED6
C20605
3E02
C9

number27:

cpi 0d6h
jnz number28
mvi a,2
ret

0506
0508
050B
050D

FEDA
C20E05
3E03
C9

number28:

cpi 0dah
jnz number29
mvi a,3
ret

050E
0510
0513
0515

FEDB
C21605
3E02
C9

number29:

cpi 0dbh
jnz number30
mvi a,2
ret

0516
0518
051B
051D

FEDC
C21E05
3E03
C9

number30:

cpi 0dch
jnz number31
mvi a,3
ret

051E
0520
0523
0525

FEE2
C22605
3E03
C9

number31:

cpi 0e2h
jnz number32
mvi a,3
ret

0526
0528
052B
052D

FEE4
C22E05
3E03
C9

number32:

cpi 0e4h
jnz number33
mvi a,3
ret

052E
0530
0533
0535

FEE6
C23605
3E02
C9

number33:

cpi 0e6h
jnz number34
mvi a,2
ret

0536
0538
053B
053D

FEEA
C23E05
3E03
C9

number34:

cpi 0eah
jnz number35
mvi a,3
ret

053E
0540
0543
0545

FEEC
C24605
3E03
C9

number35:

cpi 0ech
jnz number36
mvi a,3
ret

0546
0548
054B
054D

FEEE
C24E05
3E02
C9

number36:

cpi 0eeh
jnz number37
mvi a,2
ret

054E
0550
0553
0555

FEF2
C25605
3E03
C9

number37:

cpi 0f2h
jnz number38
mvi a,3
ret

0556
0558
055B
055D

FEF4
C25E05
3E03
C9

number38:

cpi 0f4h
jnz number39
mvi a,3
ret

055E
0560
0563
0565

FEF6
C26605
3E02
C9

number39:

cpi 0f6h
jnz number40
mvi a,2
ret

0566
0568
056B
056D

FEFA
C26E05
3E03
C9

number40:

cpi 0fah
jnz number41
mvi a,3
ret

056E FEFC
0570 C27605
0573 3E03

number41:

cpi 0fch
jnz number42
mvi a,3
Page 13 of 64

B8085.LST
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
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

29/12/2559 12:32

0575 C9
0576
0578
057B
057D

FEFE
C27E05
3E02
C9

057E 3E01
0580 C9

ret
number42:

cpi 0feh
jnz number43
mvi a,2
ret

number43:

mvi a,1
ret

; execute key 0-F or 10H-19H
0581
0583
0586
0587
058A

FE10
D28D05
57
CD3106
F20906

key_execute: cpi 10h
jnc function_key
mov d,a
call buzzer
jp
data_key

058D
058F
0592
0595

FE12
C29805
CD3106
F2650A

function_key: cpi 12h
jnz function1
call buzzer
jp increment

0598
059A
059D
05A0

FE15
C2A305
CD3106
F2780A

function1:

cpi 15h
jnz function2
call buzzer
jp decrement

05A3
05A5
05A8
05AB

FE10
C2AE05
CD3106
F2010A

function2:

cpi 10h
jnz function3
call buzzer
jp address_mode

05AE
05B0
05B3
05B6

FE11
C2B905
CD3106
F20E0A

function3:

cpi 11h
jnz function4
call buzzer
jp data_mode

05B9
05BB
05BE
05C1
05C4

FE13
C2C505
CD3106
F29B09
C9

function4:

cpi 13h
jnz function5
call buzzer
jp go
ret

05C5
05C7
05CA
05CD

FE14
C2D005
CD3106
F2190A

function5:

cpi 14h
jnz function6
call buzzer
jp function_2nd

05D0
05D2
05D5
05D8

FE16
C2DB05
CD3106
F2BF09

function6:

cpi 16h
jnz function7
call buzzer
jp single_step

05DB
05DD
05E0
05E3

FE17
C2E605
CD3106
F28109

function7:

cpi 17h
jnz function8
call buzzer
jp home

05E6
05E8
05EB
05EE

FE18
C2F105
CD3106
F23D0A

function8:

cpi 18h
jnz function9
call buzzer
jp modify_register

function9:

ret

05F1 C9

; test running onboard led
Page 14 of 64

; 0-9 jump to data key

B8085.LST
1065
1066
1067
1068
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
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140

29/12/2559 12:32

05F2 3E01

test_led:

05F4
05F6
05F9
05FC
05FD

test_led1: out gpio
lxi d,1050h
call delay
rlc
jmp test_led1

D300
115010
CD0006
07
C3F405

mvi a,1

; delay subroutine
; entry: D= outer loop E=inner loop (should be 0 for long delay)
; exit: none
0600
0601
0604
0605
0608

1D
C20006
15
C20006
C9

delay:

dcr
jnz
dcr
jnz
ret

0609
060C
060E
0611

3A26F0
FE00
C21406
F2CF06

data_key:

lda
cpi
jnz
jp

0614 FE01
0616 C21C06
0619 F20907

data_key1:

cpi 1
jnz data_key2
jp enter_address

061C FE02
061E C22406
0621 F24307

data_key2:

cpi 2
jnz data_key3
jp select_register

0624 FE03
0626 C22C06
0629 F26F06

data_key3:

cpi 3
jnz data_key4
jp enter_register

062C

data_key4:

062C C9
062D CD4006
0630 C9

e
delay
d
delay

entry_mode
0
data_key1
enter_data

ret
test_buzzer:
ret

call beep_on

;mvi a,7fh
;out system_port_c
;lxi d,1000h
;call delay
;mvi a,0ffh
;out system_port_c
;ret
; produce beep output at system port c.7
; click when key pressed
0631 3A24F0
0634 E601
0636 CA4006

buzzer:

0639
063B
063C
063F
0640
0640

0600
05
C23B06
C9

mvi b,0
delay_nobeep: dcr b
jnz delay_nobeep
ret
beep_on:
mvi c,20h

0642
0644
0646
0649
064B
064D

3E7F
D312
CD5906
3EFF
D312
CD5906

0E20

0650 0D

jz

lda beep_flag
ani 1
beep_on

buzzer1:

mvi a,7fh
out system_port_c
call delay_us
mvi a,0ffh
out system_port_c
call delay_us
dcr c
Page 15 of 64

;nop

;out system_port_c

;nop

;out system_port_c

B8085.LST
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216

29/12/2559 12:32

0651 C24206

jnz buzzer1

0654 3EFF
0656 D312

mvi a,0ffh
out system_port_c

0658 C9

ret

0659
065B
065C
065F

0660
05
C25B06
C9

delay_us:
delay_us1:

;----;
0660
0663
0666
0669
066B
066E

219E1D
CDAE0C
3A21F0
FEFF
C26306
C9

mvi b,60h
dcr b
jnz delay_us1
ret

turn display off while key has been pressing -----------------useful for no function accepted

display_off: lxi h,off_display
off_display1: call scan
lda key
cpi 0ffh
jnz off_display1
ret

; loop if key still pressed

;************* modify current displayed register **********************
; entry: current user register displayed
;
066F

enter_register:

066F 2A38F0

lhld current_register

0672
0673
0674
0675

mov
inx
mov
lxi

4E
23
46
210000

c,m
h
b,m
h,0

0678 09

dad b

; MOV HL,BC

0679 5A

mov e,d

; save key code to E

067A
067A
067B
067C
067D
067E
067F

7D
07
6F
7C
17
67

shift_register:
mov
rlc
mov
mov
ral
mov

a,l

0680
0681
0682
0683
0684
0685

7D
07
6F
7C
17
67

mov
rlc
mov
mov
ral
mov

a,l

0686
0687
0688
0689
068A
068B

7D
07
6F
7C
17
67

mov
rlc
mov
mov
ral
mov

a,l

068C
068D
068E
068F
0690
0691

7D
07
6F
7C
17
67

mov
rlc
mov
mov
ral
mov

a,l

l,a
a,h
h,a

l,a
a,h
h,a

l,a
a,h
h,a

l,a
a,h
h,a

0692 7D

mov a,l

0693 E6F0
0695 82
0696 6F

ani 0f0h
add d
mov l,a
Page 16 of 64

B8085.LST
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
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
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292

29/12/2559 12:32

0697 44
0698 4D

mov b,h
mov c,l

0699
069C
069D
069E

lhld current_register
mov m,c
inx h
mov m,b

2A38F0
71
23
70

069F 2A38F0

lhld current_register

06A2
06A3
06A4
06A5

mov
inx
mov
lxi

4E
23
46
210000

c,m
h
b,m
h,0

06A8 09

dad b

06A9 CD930A

call read_register

06AC F5

; MOV HL,BC

push psw

06AD 3A13F0
06B0 F680
06B2 3213F0

lda buffer+3
ori 80h
sta buffer+3

06B5 3A12F0
06B8 F680
06BA 3212F0

lda buffer+2
ori 80h
sta buffer+2

06BD 3A11F0
06C0 F680
06C2 3211F0

lda buffer+1
ori 80h
sta buffer+1

06C5 3A10F0
06C8 F680
06CA 3210F0

lda buffer
ori 80h
sta buffer

06CD F1

pop psw

06CE C9

ret
; enter nibble into current location

06CF 2A2AF0

enter_data:

lhld user_PC

06D2 5A

mov e,d

06D3
06D6
06D8
06DB
06DC
06DF
06E1

lda
cpi
jnz
inr
sta
mvi
mov

3A27F0
FE00
C2E206
3C
3227F0
3E00
77

06E2 7E
06E3
06E4
06E5
06E6
06E7
06E9
06EA
06EB
06EC
06ED
06EE

07
07
07
07
E6F0
83
77
57
7E
BA
CA0507

shift_data:

; save key code to E

counter1
0
shift_data
a
counter1
a,0
m,a

mov a,m
rlc
rlc
rlc
rlc
ani
add
mov
mov
mov
cmp
jz

0f0h
e
m,a
d,a
a,m
d
it_is_ram

; make low nibble to 0 before insert
; insert low nibble to A
; check if the space is ram or rom

; if it was rom them turn of led while key has been pressed
06F1 219E1D

lxi h,off_display
Page 17 of 64

B8085.LST
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
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

06F4
06F7
06FA
06FC

29/12/2559 12:32
CDAE0C
3A21F0
FEFF
C2F406

call scan
lda key
cpi 0ffh
jnz enter_data1

; loop if key still pressed

06FF CDA70C

call debounce

; debounce after key was released

0702 2110F0

lxi h,buffer

; back to show display again

0705
0705 CDBE0A
0708 C9

enter_data1:

it_is_ram:
call read_memory
ret
; enter nibble into current pointer

0709 2A2AF0
070C 5A

enter_address: lhld user_PC
mov e,d

070D
0710
0712
0715
0716
0719
071C

3A28F0
FE00
C21F07
3C
3228F0
210000
222AF0

071F
071F
0720
0721
0722
0723
0724

7D
07
6F
7C
17
67

mov
rlc
mov
mov
ral
mov

a,l

0725
0726
0727
0728
0729
072A

7D
07
6F
7C
17
67

mov
rlc
mov
mov
ral
mov

a,l

072B
072C
072D
072E
072F
0730

7D
07
6F
7C
17
67

mov
rlc
mov
mov
ral
mov

a,l

0731
0732
0733
0734
0735
0736

7D
07
6F
7C
17
67

mov
rlc
mov
mov
ral
mov

a,l

; save key code to E

lda counter2
cpi 0
jnz shift_address
inr a
sta counter2
lxi h,0
shld user_PC
shift_address:
l,a
a,h
h,a

l,a
a,h
h,a

l,a
a,h
h,a

l,a
a,h
h,a

0737 7D

mov a,l

0738 E6F0
073A 82
073B 6F

ani 0f0h
add d
mov l,a

073C 222AF0

shld user_PC

073F CDBE0A

call read_memory

0742 C9

ret

; store new pointer

;****************** ALT register display ******************************
0743 5A
0744 7A
0745 FE00
0747 C26107

select_register: mov e,d

; save key for selecting user register

mov a,d
cpi 0
jnz register1
Page 18 of 64

B8085.LST
1369
1370
1371
1372
1373
1374
1375
1376
1377
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
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444

074A
074C
074F
0751

29/12/2559 12:32
3E77
3214F0
3E71
3215F0

mvi
sta
mvi
sta

a,77h
buffer+4
a,71h
buffer+5

; AF register pair

0754 212CF0
0757 2238F0

lxi h,user_AF
shld current_register

075A 2A2CF0
075D CD930A
0760 C9

lhld user_AF
call read_register
ret

0761
0761 FE01
0763 C27D07
0766
0768
076B
076D

register1:
cpi 1
jnz register2

3E7C
3214F0
3E39
3215F0

mvi
sta
mvi
sta

a,7ch
buffer+4
a,39h
buffer+5

; BC register pair

0770 212EF0
0773 2238F0

lxi h,user_BC
shld current_register

0776 2A2EF0
0779 CD930A

lhld user_BC
call read_register

077C C9

ret

077D
077D FE02
077F C29907
0782
0784
0787
0789

register2:
cpi 2
jnz register3

3E5E
3214F0
3E79
3215F0

mvi
sta
mvi
sta

a,5eh
buffer+4
a,79h
buffer+5

; DE register pair

078C 2130F0
078F 2238F0

lxi h,user_DE
shld current_register

0792 2A30F0
0795 CD930A

lhld user_DE
call read_register

0798 C9

ret

0799
0799 FE03
079B C2B507
079E
07A0
07A3
07A5

register3:
cpi 3
jnz register4

3E76
3214F0
3E38
3215F0

mvi
sta
mvi
sta

a,76h
buffer+4
a,38h
buffer+5

; HL register pair

07A8 2132F0
07AB 2238F0

lxi h,user_HL
shld current_register

07AE 2A32F0
07B1 CD930A

lhld user_HL
call read_register

07B4 C9
07B5
07B5 FE04
07B7 C2D107
07BA
07BC
07BF
07C1

3E6D
3214F0
3E73
3215F0

ret
register4:
cpi 4
jnz register5
mvi
sta
mvi
sta

a,6dh
buffer+4
a,73h
buffer+5

; user SP

07C4 2134F0
07C7 2238F0

lxi h,user_SP
shld current_register

07CA 2A34F0

lhld user_SP
Page 19 of 64

B8085.LST
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
1474
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
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520

29/12/2559 12:32

07CD CD930A

call read_register

07D0 C9

ret

07D1
07D1 FE05
07D3 C2F807
07D6
07D8
07DB
07DD

register5:
cpi 5
jnz register6

3E73
3214F0
3E39
3215F0

mvi
sta
mvi
sta

a,73h
buffer+4
a,39h
buffer+5

; user PC

07E0 212AF0
07E3 2238F0

lxi h,user_PC
shld current_register

07E6 2A2AF0
07E9 CD930A

lhld user_PC
call read_register

07EC C9

ret
;---- display carry flag -------------------------------------------------

07ED C2F507
07F0 3E3F
07F2 C3F707

put_flag:

jnz put_high1
mvi a,3fh
jmp skip_put_high1

07F5 3E06

put_high1:

mvi a,06h

07F7
07F7 C9

skip_put_high1:
ret

07F8
07F8 FE06
07FA C22008

register6:

07FD
07FF
0802
0804
0807
0809

cpi 6
jnz register7

3E39
3210F0
3E6E
3211F0
3E48
3212F0

mvi
sta
mvi
sta
mvi
sta

a,39h
buffer
a,6eh
buffer+1
a,48h
buffer+2

080C 2A2CF0
080F 7D

lhld user_AF
mov a,l

0810 E601
0812 CDED07
0815 3213F0

ani 1
call put_flag
sta buffer+3

0818 AF
0819 3214F0
081C 3215F0

xra a
sta buffer+4
sta buffer+5

081F C9

ret

0820
0820 FE07
0822 C24B08
0825
0827
082A
082C
082F
0831
0834
0836
0839
083B

3E49
3210F0
3E79
3211F0
3E50
3212F0
3E5C
3213F0
3E48
3214F0

; carry flag

register7:
cpi 7
jnz register8
mvi
sta
mvi
sta
mvi
sta
mvi
sta
mvi
sta

a,49h
buffer
a,79h
buffer+1
a,50h
buffer+2
a,5ch
buffer+3
a,48h
buffer+4

083E 2A2CF0
0841 7D

lhld user_AF
mov a,l

0842 E640

ani 40h

; zero flag

Page 20 of 64

B8085.LST
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
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

29/12/2559 12:32

0844 CDED07
0847 3215F0

call put_flag
sta buffer+5

084A C9

ret

084B
084B FE08
084D C27C08
0850
0852
0855
0857
085A
085C
085F
0861
0864
0866

register8:
cpi 8
jnz register9

3E6D
3210F0
3E11
3211F0
3E6F
3212F0
3E54
3213F0
3E48
3214F0

mvi
sta
mvi
sta
mvi
sta
mvi
sta
mvi
sta

a,6dh
buffer
a,11h
buffer+1
a,6fh
buffer+2
a,54h
buffer+3
a,48h
buffer+4

; sign flag

0869 2A2CF0
086C 7D

lhld user_AF
mov a,l

086D
086E
0871
0873

ral
jc put_high2
mvi a,3fh
jmp skip_put_high2

17
DA7608
3E3F
C37808

0876 3E06
0878
0878 3215F0

put_high2:
mvi a,06h
skip_put_high2:
sta buffer+5

087B C9
087C
087C FE09
087E C2A408
0881
0883
0886
0888
088B
088D

ret
register9:
cpi 9
jnz register10

3E77
3210F0
3E39
3211F0
3E48
3212F0

mvi
sta
mvi
sta
mvi
sta

a,77h
buffer
a,39h
buffer+1
a,48h
buffer+2

0890 2A2CF0
0893 7D

lhld user_AF
mov a,l

0894
0896
0899
089C
089D
08A0

ani 10h
call put_flag
sta buffer+3
xra a
sta buffer+4
sta buffer+5

E610
CDED07
3213F0
AF
3214F0
3215F0

08A3 C9
08A4
08A4 FE0A
08A6 C2CA08
08A9
08AB
08AE
08B0

3E73
3210F0
3E48
3211F0

ret
register10:
cpi 10
jnz break
mvi
sta
mvi
sta

a,73h
buffer
a,48h
buffer+1

08B3 2A2CF0
08B6 7D

lhld user_AF
mov a,l

08B7
08B9
08BC
08BF

ani 4
call put_flag
sta buffer+2
xra a

E604
CDED07
3212F0
AF

; AC flag

; Parity flag

Page 21 of 64

B8085.LST
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672

08C0
08C3
08C6
08C9

29/12/2559 12:32
3213F0
3214F0
3215F0
C9

08CA FE0B
08CC C20409

sta buffer+3
sta buffer+4
sta buffer+5
ret
; ------------------ ALT B SET BREAK POINT --------------------------break:
cpi 11
jnz clear_break

08CF 2A2AF0
08D2 223EF0

lhld user_PC ; save user PC
shld break_address

08D5 7E
08D6 3240F0

mov a,m
; get user code
sta break_opcode ; save it

08D9
08DA
08DD
08DE
08E0

push h
call read_memory
pop h
mvi a,0FFh
; RST 7 opcode
mov m,a
; replace user code with RST 7

E5
CDBE0A
E1
3EFF
77

08E1 F5

push psw

08E2 3A10F0
08E5 F680
08E7 3210F0

lda buffer
ori 80h
sta buffer

08EA 3A11F0
08ED F680
08EF 3211F0

lda buffer+1
ori 80h
sta buffer+1

08F2 3A12F0
08F5 F680
08F7 3212F0

lda buffer+2
ori 80h
sta buffer+2

08FA
08FD
08FF
0902

lda
ori
sta
pop

3A13F0
F680
3213F0
F1

0903 C9

buffer+3
80h
buffer+3
psw

ret
;----------------- ALT C CLEAR BREAK POINT ---------------------------

0904 FE0C
0906 C21F09

clear_break:

cpi 12
jnz insert_byte

0909 2140F0
090C 7E

lxi h,break_opcode ; restore user code
mov a,m

090D
0910
0911
0914
0917
0918
091B

lhld break_address
mov m,a
shld user_PC
call read_memory
xra a
sta entry_mode
call mode_indicator

2A3EF0
77
222AF0
CDBE0A
AF
3226F0
CD020B

091E C9

ret
;--------------- ALT E insert byte --------------------------------; insert byte within 512 bytes from current location

091F FE0E
0921 C24A09

insert_byte: cpi 14
; test with key E
jnz delete_byte

0924 2A2AF0
0927 E5

push h

0928
092B
092C
092D
092E

dad d
push h
pop b
dcx b

110002
19
E5
C1
0B

lhld user_PC
; save PC to stack
lxi d,512
; copy HL to BC

Page 22 of 64

B8085.LST
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748

29/12/2559 12:32

092F 110002
0932
0932
0933
0934
0935
0936
0937
0938
0939

0A
77
2B
0B
1B
7B
B2
C23209

093C
093D
093E
093F
0942
0943
0946

E1
AF
77
CDBE0A
AF
3226F0
CD020B

lxi d,512

; load counter with 512 bytes

insert_byte1:
ldax b
mov m,a
dcx h
dcx b
dcx d
mov a,e
ora d
; check DE ==0
jnz insert_byte1
pop h
; restore user PC
xra a
mov m,a
; store 00 at insert byte
call read_memory
xra a
sta entry_mode
call mode_indicator

0949 C9

ret
;--------------- ALT D delete byte --------------------------------; delete byte within 512 bytes

094A FE0D
094C C26F09
094F
0952
0953
0954

delete_byte: cpi 13
jnz beep_chk

2A2AF0
E5
E5
C1

lhld user_PC
push h
push h
pop b

0955 03
0956 110002
0959
0959
095A
095B
095C
095D
095E
095F
0960

0A
77
23
03
1B
7B
B2
C25909

0963
0964
0967
0968
096B

E1
CDBE0A
AF
3226F0
CD020B

inx b
lxi d,512
delete_byte1:
ldax b
mov m,a
inx h
inx b
dcx d
mov a,e
ora d
; check if DE ==0
jnz delete_byte1
pop h
call read_memory
xra a
sta entry_mode
call mode_indicator

096E C9
096F FE0F
0971 C27D09
0974
0977
0979
097C

ret
;--------------- ALT F BEEP/NO BEEP
beep_chk:
cpi 15
jnz option1

3A24F0
EE01
3224F0
C9

lda beep_flag
xri 1
sta beep_flag
ret

097D
097D CD6006
0980 C9

option1:

0981
0984
0987
098A
098D

home:

210081
222AF0
2110F0
CDBE0A
AF

---------------------------------

call display_off ; no service key
ret

lxi h,home_address
shld user_PC
lxi h,buffer
call read_memory
xra a
Page 23 of 64

B8085.LST
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824

29/12/2559 12:32

098E 3226F0
0991 CD020B
0994 C9
0995 3E2A
0997 CD2F12
099A C9

sta entry_mode
call mode_indicator
ret
debug:

mvi a,"*"
call cout
ret

; go function, jump from monitor program to user program
; save system stack and load user stack
; load CPU registers with user registers before jump
099B
099B 210000

go:
lxi h,0

099E 39
099F 2257F0

dad sp
; save system stack
shld save_stack

09A2 2A34F0
09A5 F9

lhld user_SP
sphl

09A6
09A9
09AA
09AD
09AE
09B1
09B2
09B5
09B6
09B9

2A2AF0
E5
2A2CF0
E5
2A2EF0
E5
2A30F0
E5
2A32F0
E5

lhld
push
lhld
push
lhld
push
lhld
push
lhld
push

09BA
09BB
09BC
09BD

E1
D1
C1
F1

pop
pop
pop
pop

09BE C9

ret
;
;
;
;

09BF
09BF 210000

; get user stack
; load user stack

user_PC
h
user_AF
h
user_BC
h
user_DE
h
user_HL
h
h
d
b
psw
; jump to user program

single step
load CPU registers with user registers, enable trap signal then jump to
program
disassemble line to be executed

single_step:
lxi h,0

09C2 39
09C3 2257F0

dad sp
; save system stack
shld save_stack

09C6 2A34F0
09C9 F9

lhld user_SP
sphl

09CA 2A2AF0
09CD E5

lhld user_PC
push h

09CE 3A25F0
09D1 FE00
09D3 CADF09

lda uart_found
cpi 0
jz skip2
; if no uart, skip disassemble

09D6 CDDA12
09D9 CDEB12
09DC CD3A03

call new_line
call send_tab
call disassemble

09DF

; load user stack
; get address to be executed
; save to stack

skip2:

09DF E1
09E0 222AF0

pop h
shld user_PC

09E3
09E6
09E7
09EA

lhld
push
lhld
push

2A2AF0
E5
2A2CF0
E5

user_PC
h
user_AF
h
Page 24 of 64

B8085.LST
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900

09EB
09EE
09EF
09F2
09F3
09F6

29/12/2559 12:32
2A2EF0
E5
2A30F0
E5
2A32F0
E5

lhld
push
lhld
push
lhld
push

user_BC
h
user_DE
h
user_HL
h

09F7 E1
09F8 D1
09F9 C1

pop h
pop d
pop b

09FA 3EBF
09FC D312

mvi a,0bfh
out system_port_c

; make port_c.6 low to enable trap
;

; now the shift register 74LS164 is running
; within 8 ALE, trap will be high, trap will be recorgnized after instruction
; followed RET was executed
09FE 00
09FF F1
0A00 C9

nop
pop psw
ret

; 1 cycles
; 5 cycles
; 3 cycles

; set mode to 1
0A01
0A03
0A06
0A09
0A0A
0A0D

3E01
3226F0
CDBE0A
AF
3228F0
C9

address_mode: mvi a,1
sta entry_mode
call read_memory
xra a
sta counter2
ret

0A0E
0A0F
0A12
0A15
0A18

AF
3226F0
3227F0
CDBE0A
C9

data_mode:

0A19
0A1B
0A1E
0A20
0A23
0A25
0A28
0A2A
0A2D
0A2F
0A32
0A34
0A37
0A39
0A3C

3E02
3226F0
3E77
3210F0
3E38
3211F0
3E78
3212F0
3E00
3213F0
3E00
3214F0
3E00
3215F0
C9

function_2nd: mvi
sta
mvi
sta
mvi
sta
mvi
sta
mvi
sta
mvi
sta
mvi
sta
ret

xra a
sta entry_mode
sta counter1
call read_memory
ret
a,2
entry_mode
a,77h
buffer
a,38h
buffer+1
a,78h
buffer+2
a,0
buffer+3
a,0
buffer+4
a,0
buffer+5

; set entry mode to 3
; hex data will be used for register modifying
0A3D

modify_register:

0A3D F5

push psw

0A3E 3E03
0A40 3226F0

mvi a,3
sta entry_mode

0A43 3A13F0
0A46 F680
0A48 3213F0

lda buffer+3
ori 80h
sta buffer+3

0A4B 3A12F0
0A4E F680
0A50 3212F0

lda buffer+2
ori 80h
sta buffer+2

0A53 3A11F0
0A56 F680
0A58 3211F0

lda buffer+1
ori 80h
sta buffer+1
Page 25 of 64

B8085.LST
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
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
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976

29/12/2559 12:32

0A5B 3A10F0
0A5E F680
0A60 3210F0

lda buffer
ori 80h
sta buffer

0A63 F1

pop psw

0A64 C9

ret

; increment key works with mode0 or mode1 display
0A65 3E00
0A67 3226F0
0A6A 3227F0
0A6D
0A70
0A71
0A74
0A77

increment:

2A2AF0
23
222AF0
CDBE0A
C9

mvi a,0
sta entry_mode
sta counter1
lhld
inx
shld
call
ret

; switch to data mode
; clear event counter1

user_PC
h
user_PC
read_memory

; decrement key works with mode0 or mode1 display
0A78
0A7A
0A7D
0A80
0A81
0A84
0A87

3E00
3226F0
2A2AF0
2B
222AF0
CDBE0A
C9

decrement:

mvi a,0
sta entry_mode ; switch to data mode
lhld user_PC
dcx h
shld user_PC
call read_memory
ret

; convert nibble 0-F to 8-bit seven segment code
; entry: A
; exit: A
0A88
0A88
0A8A
0A8D
0A8E
0A90
0A91
0A92

to_seven_segment:
E60F
218E1D
5F
1600
19
7E
C9

ani
lxi
mov
mvi
dad
mov
ret

0fh
; get only low nibble as the index
h,convert
e,a
d,0
d
a,m
; get code

; convert [HL] to display buffer 0-3
; for register display
; entry: HL
0A93
0A93
0A94
0A95
0A96
0A97
0A98
0A99
0A9A
0A9D

E5
7C
F5
0F
0F
0F
0F
CD880A
3210F0

read_register:
push h
mov a,h
push psw
rrc
rrc
rrc
rrc
call to_seven_segment
sta buffer

0AA0 F1
0AA1 CD880A
0AA4 3211F0

pop psw
call to_seven_segment
sta buffer+1

0AA7 E1

pop h

0AA8 E5

push h
Page 26 of 64

B8085.LST
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052

0AA9
0AAA
0AAB
0AAC
0AAD
0AAE
0AAF
0AB2
0AB5
0AB6
0AB9

29/12/2559 12:32
7D
F5
0F
0F
0F
0F
CD880A
3212F0
F1
CD880A
3213F0

0ABC E1
0ABD C9

mov a,l
push psw
rrc
rrc
rrc
rrc
call to_seven_segment
sta buffer+2
pop psw
call to_seven_segment
sta buffer+3
pop h
ret

; convert current address and data to display buffer
;
0ABE
0AC1
0AC2
0AC3
0AC4
0AC5
0AC6
0AC7
0AC8
0ACB

2A2AF0
E5
7C
F5
0F
0F
0F
0F
CD880A
3210F0

read_memory: lhld user_PC
push h
mov a,h
push psw
rrc
rrc
rrc
rrc
call to_seven_segment
sta buffer

0ACE F1
0ACF CD880A
0AD2 3211F0

pop psw
call to_seven_segment
sta buffer+1

0AD5 E1

pop h

0AD6 E5

push h

0AD7
0AD8
0AD9
0ADA
0ADB
0ADC
0ADD
0AE0
0AE3
0AE4
0AE7

mov a,l
push psw
rrc
rrc
rrc
rrc
call to_seven_segment
sta buffer+2
pop psw
call to_seven_segment
sta buffer+3

7D
F5
0F
0F
0F
0F
CD880A
3212F0
F1
CD880A
3213F0

0AEA E1
0AEB 7E

pop h
mov a,m

0AEC
0AED
0AEE
0AEF
0AF0
0AF1
0AF4
0AF7

F5
0F
0F
0F
0F
CD880A
3214F0
F1

push psw
rrc
rrc
rrc
rrc
call to_seven_segment
sta buffer+4
pop psw

0AF8 CD880A
0AFB 3215F0

call to_seven_segment
sta buffer+5

0AFE CD020B

call mode_indicator

0B01 C9

ret

0B02

; read from memory

mode_indicator:

0B02 F5

push psw

0B03 3A26F0

lda entry_mode
Page 27 of 64

B8085.LST
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128

29/12/2559 12:32

0B06 FE00
0B08 C23D0B

cpi 0
jnz mode1

0B0B 3A15F0
0B0E F680
0B10 3215F0

lda buffer+5
ori 80h
sta buffer+5

0B13 3A14F0
0B16 F680
0B18 3214F0

lda buffer+4
ori 80h
sta buffer+4

0B1B 3A13F0
0B1E E67F
0B20 3213F0

lda buffer+3
ani 7fh
sta buffer+3

0B23 3A12F0
0B26 E67F
0B28 3212F0

lda buffer+2
ani 7fh
sta buffer+2

0B2B 3A11F0
0B2E E67F
0B30 3211F0

lda buffer+1
ani 7fh
sta buffer+1

0B33 3A10F0
0B36 E67F
0B38 3210F0

lda buffer
ani 7fh
sta buffer

0B3B F1
0B3C C9
0B3D FE01
0B3F C2740B

; mode 0 indicator

pop psw
ret
mode1:

0B42 3A15F0
0B45 E67F
0B47 3215F0

cpi 1
jnz mode2
lda buffer+5
ani 7fh
sta buffer+5

0B4A 3A14F0
0B4D E67F
0B4F 3214F0

; mode 1 indicator

lda buffer+4
ani 7fh
sta buffer+4

0B52 3A13F0
0B55 F680
0B57 3213F0

lda buffer+3
ori 80h
sta buffer+3

0B5A 3A12F0
0B5D F680
0B5F 3212F0

lda buffer+2
ori 80h
sta buffer+2

0B62 3A11F0
0B65 F680
0B67 3211F0

lda buffer+1
ori 80h
sta buffer+1

0B6A 3A10F0
0B6D F680
0B6F 3210F0

lda buffer
ori 80h
sta buffer

0B72 F1
0B73 C9

pop psw
ret

0B74 F1
0B75 C9

mode2:

pop psw
ret

0B76 0E07
0B78 21940B

cold_boot: mvi c,7
lxi h,title

0B7B 1650

cold2:

mvi d,50h
Page 28 of 64

B8085.LST
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204

29/12/2559 12:32

0B7D CDAE0C
0B80 15
0B81 C27D0B

cold1:

call scan
dcr d
jnz cold1

0B84 23
0B85 0D
0B86 C27B0B

inx h
dcr c
jnz cold2

0B89 2B

dcx h

0B8A
0B8C
0B8F
0B90

0E00
CDAE0C
0D
C28C0B

cold3:

0B93 C9

mvi c,0
call scan
dcr c
jnz cold3
ret

0B94 0000000000title:

dfb 0,0,0,0,0,0,7fh,3fh,7fh,6dh,0,0

; display data read from memory pointed to by HL on LED
; entry: HL
;
0BA0 1605

demo:

mvi d,5

0BA2
0BA5
0BA6
0BA9
0BAA

demo1_2:

call scan
dcr d
jnz demo1_2
inx h
ret

CDAE0C
15
C2A20B
23
C9

;
;
;
;

convert position key to internal key code 0-F for data entry and 10-19H
function keys
entry: A = scan code
exit: A = internal code

0BAB
0BAD
0BB0
0BB2

FE02
C2B30B
3E00
C9

get_key_code:

cpi 2
jnz code1
mvi a,0
ret

0BB3
0BB5
0BB8
0BBA

FE0A
C2BB0B
3E01
C9

code1:

cpi 0ah
jnz code2
mvi a,1
ret

0BBB
0BBD
0BC0
0BC2

FE12
C2C30B
3E02
C9

code2:

cpi 12h
jnz code3
mvi a,2
ret

0BC3
0BC5
0BC8
0BCA

FE1A
C2CB0B
3E03
C9

code3:

cpi 1ah
jnz code4
mvi a,3
ret

0BCB
0BCD
0BD0
0BD2

FE03
C2D30B
3E04
C9

code4:

cpi 3
jnz code5
mvi a,4
ret

0BD3
0BD5
0BD8
0BDA

FE0B
C2DB0B
3E05
C9

code5:

cpi 0bh
jnz code6
mvi a,5
ret

0BDB
0BDD
0BE0
0BE2

FE13
C2E30B
3E06
C9

code6:

cpi 13h
jnz code7
mvi a,6
ret

0BE3 FE1B
0BE5 C2EB0B

code7:

cpi 1bh
jnz code8
Page 29 of 64

B8085.LST
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280

29/12/2559 12:32

0BE8 3E07
0BEA C9

mvi a,7
ret

0BEB
0BED
0BF0
0BF2

FE04
C2F30B
3E08
C9

code8:

cpi 4
jnz code9
mvi a,8
ret

0BF3
0BF5
0BF8
0BFA

FE0C
C2FB0B
3E09
C9

code9:

cpi 0ch
jnz code10
mvi a,9
ret

0BFB
0BFD
0C00
0C02

FE14
C2030C
3E0A
C9

code10:

cpi 14h
jnz code11
mvi a,0ah
ret

0C03
0C05
0C08
0C0A

FE1C
C20B0C
3E0B
C9

code11:

cpi 1ch
jnz code12
mvi a,0bh
ret

0C0B
0C0D
0C10
0C12

FE05
C2130C
3E0C
C9

code12:

cpi 5
jnz code13
mvi a,0ch
ret

0C13
0C15
0C18
0C1A

FE0D
C21B0C
3E0D
C9

code13:

cpi 0dh
jnz code14
mvi a,0dh
ret

0C1B
0C1D
0C20
0C22

FE15
C2230C
3E0E
C9

code14:

cpi 15h
jnz code15
mvi a,0eh
ret

0C23
0C25
0C28
0C2A

FE1D
C22B0C
3E0F
C9

code15:

cpi 1dh
jnz code16
mvi a,0fh
ret

0C2B
0C2D
0C30
0C32

FE10
C2330C
3E10
C9

code16:

cpi 10h
jnz code17
mvi a,10h
ret

0C33
0C35
0C38
0C3A

FE18
C23B0C
3E11
C9

code17:

cpi 18h
jnz code18
mvi a,11h
ret

0C3B
0C3D
0C40
0C42

FE01
C2430C
3E12
C9

code18:

cpi 1
jnz code19
mvi a,12h
ret

0C43
0C45
0C48
0C4A

FE00
C24B0C
3E13
C9

code19:

cpi 0
jnz code20
mvi a,13h
ret

0C4B
0C4D
0C50
0C52

FE08
C2530C
3E14
C9

code20:

cpi 8
jnz code21
mvi a,14h
ret

0C53
0C55
0C58
0C5A

FE09
C25B0C
3E15
C9

code21:

cpi 9
jnz code22
mvi a,15h
ret

0C5B FE11
0C5D C2630C
0C60 3E16

code22:

cpi 11h
jnz code23
mvi a,16h
Page 30 of 64

B8085.LST
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356

29/12/2559 12:32

0C62 C9

ret

0C63
0C65
0C68
0C6A

FE19
C26B0C
3E17
C9

code23:

cpi 19h
jnz code24
mvi a,17h
ret

0C6B
0C6D
0C70
0C72

FE2E
C2730C
3E18
C9

code24:

cpi 2eh
jnz code25
mvi a,18h
ret

0C73
0C75
0C78
0C7A

FE2F
C27B0C
3E19
C9

code25:

cpi 2fh
jnz code26
mvi a,19h
ret

code26:

mvi a,0ffh
ret

0C7B 3EFF
0C7D C9

; scan display and keyboard unitl key was pressed
0C7E

scan_key:

0C7E

scan_key4:

0C7E
0C81
0C84
0C87
0C89

; mvi d,50

2110F0
CDAE0C
3A21F0
FEFF
C27E0C

;push d

; save d

lxi h,buffer
call scan
lda key
cpi 0ffh
jnz scan_key4
;pop d

0C8C F28F0C
0C8F

; number of loop for timeout if key still pressed

jp

; loop if key still pressed

scan_key3

scan_key2:

;pop d

; dcr d
; jp scan_key4

; no repeat function
; repeat if still pressed when timeout

0C8F CDA70C
0C92
0C95
0C98
0C9B
0C9D

2110F0
CDAE0C
3A21F0
FEFF
CA950C

scan_key3:
scan_key1:

call debounce

; debounce after released

lxi h,buffer
call scan
lda key
cpi 0ffh
jz scan_key1

; loop until key will be pressed

0CA0 CDA70C

call debounce

0CA3 CDAB0B

call get_key_code
;

call out2x
ret

debounce:
debounce1:

mvi b,20
dcr b
jnz debounce1
ret

0CA6 C9
0CA7
0CA9
0CAA
0CAD

0614
05
C2A90C
C9

; subroutine scan keyboard and display
; input: hl pointer to buffer
; exit: key = scan code
;
-1 no key pressed
;
0CAE E5
0CAF C5
0CB0 D5

scan:

push h
push b
push d
Page 31 of 64

B8085.LST
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432

29/12/2559 12:32

0CB1
0CB3
0CB5
0CB7
0CB9

0E06
1E00
1600
3EFF
3221F0

0CBC
0CBD
0CBF
0CC1
0CC2

7B
F6F0
D312
7E
D311

0CC4 060A
0CC6 05
0CC7 C2C60C
0CCA AF
0CCB D311

scan1:

0CD5
0CD6
0CD7
0CDA

0CDC 05
0CDD C2D10C

;
;
;
;
;

for 6-digit LED
digit scan code appears at 4-to-10 decoder
key position
put -1 to key
key = -1

mov
ori
out
mov
out

a,e
0f0h
; high nibble must be 1111
system_port_c ; active digit first
a,m
; load a with [hl]
system_port_b ; then turn segment on
; delay for transition process

xra a
out system_port_b ; turn off segment
in

system_port_a

mvi b,8
shift_key: rar
jc next_key

F5
7A
3221F0
F1

0CDB
0CDB 14

c,6
e,0
d,0
a,0ffh
key

mvi b,10
dcr b
jnz wait1

wait1:

0CCD DB10
0CCF 0608
0CD1 1F
0CD2 DADB0C

mvi
mvi
mvi
mvi
sta

push psw
mov a,d
sta key
pop psw

; read input port
; check all 8-row
; rotate right through carry
; if carry = 1 then no key pressed

; save key position

next_key:
inr d

; next key position

dcr b
jnz shift_key

; until 8-bit was shifted

; mvi a,0
; out system_port_b

; clear a
; turn off led

0CE0 1C
0CE1 23

inr e
inx h

; next digit scan code
; next location

0CE2 0D
0CE3 C2BC0C

dcr c
jnz scan1

; next column

0CE6 CDED0C

call serial_command

0CE9
0CEA
0CEB
0CEC

pop d
pop b
pop h
ret

D1
C1
E1
C9

;----------- serial commands with 9600 8n1 terminal -------------------; check if serial buffer has command
;
0CED
0CED 3A25F0
0CF0 FE00
0CF2 CA310D
0CF5
0CF8
0CFB
0CFE
0D01
0D04
0D07
0D0A
0D0D
0D10

CD4512
CD500D
CD320D
CDF112
CDEE11
CDC711
CDDC11
CDAA11
CD2711
CDDD10

serial_command:
lda uart_found
cpi 0
jz skip_serial
call
call
call
call
call
call
call
call
call
call

get_command
download
prompting
hex_dump
help
quick_home
io_address
new_location
edit_location
jump_to_user_pgm
Page 32 of 64

B8085.LST
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508

0D13
0D16
0D19
0D1C
0D1F
0D22
0D25
0D28
0D2B
0D2E

29/12/2559 12:32
CDC410
CD720D
CD8010
CD4C0F
CD0C0F
CD1303
CD000F
CDF10E
CDD60E
CDA40D

0D31

call
call
call
call
call
call
call
call
call
call

monitor_function
ascii_print
fill_memory
register_display
stack_display
disassemble1
single_step_
print_watch
clear_watch
set_user_register

skip_serial:

0D31 C9

ret

0D32 3A22F0
0D35 FE0D
0D37 C24F0D

prompting: lda command
cpi cr
jnz exit_prompting

0D3A

send_prompt:

0D3A
0D3D
0D40
0D41
0D44
0D45
0D48
0D4B
0D4E

CDDA12
2A3CF0
7C
CDCB12
7D
CDCB12
21E41D
CD5812
C9

0D4F C9

call new_line
lhld pointer
mov a,h
call out2x
mov a,l
call out2x
lxi h,prompt_text
call put_str
ret

; user_PC

exit_prompting: ret

; command execute
; get command from serial port
0D50 3A22F0
0D53 FE6C
0D55 C2710D

download: lda command
cpi "l"
jnz exit_download

0D58 CDD514
0D5B 3E01
0D5D 323AF0

call clear_bcd1
mvi a,1
sta temp

0D60 AF
0D61 3220F0

xra a
sta bcs

0D64
0D67
0D6A
0D6D
0D70

lxi h,download_text
call put_str
call get_record
call send_prompt
ret

21CD1D
CD5812
CD0314
CD3A0D
C9

0D71 C9

; reset bcd counter1

; clear byte chekc sum error

exit_download ret
; display printable ASCII code, 20H-7FH

0D72 3A22F0
0D75 FE61
0D77 C2A30D

ascii_print: lda command
cpi "a"
jnz exit_ascii_print

0D7A 215E1E
0D7D CD5812

lxi h, ascii_text
call put_str

0D80 CDDA12
0D83 CDDA12

call new_line
call new_line

0D86 2E20
0D88 0E60

mvi l,20h
mvi c,96

0D8A

ascii_print1:
Page 33 of 64

B8085.LST
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584

29/12/2559 12:32

0D8A 7D
0D8B CD2F12

mov a,l
call cout

0D8E
0D90
0D93
0D94
0D97
0D9A
0D9B
0D9C

3E3D
CD2F12
7D
CDCB12
CDE512
2C
0D
C28A0D

mvi a,"="
call cout
mov a,l
call out2x
call space
inr l
dcr c
jnz ascii_print1

0D9F CD3A0D
0DA2 C9

call send_prompt
ret

0DA3

exit_ascii_print:

0DA3 C9

ret
;------------------- set value to user registers --------------------; set value to user register AF, BC, DE, HL, SP, PC

0DA4

set_user_register:

0DA4 3A22F0
0DA7 FE73
0DA9 C2B80E

lda command
cpi "s"
jnz exit_set_user

0DAC 210C1F
0DAF CD5812

lxi h, set_register_text
call put_str

0DB2 CD3B12
0DB5 FE61
0DB7 C2E00D

call cin
cpi "a"
jnz set_user1

0DBA
0DBD
0DC0
0DC3
0DC6
0DC7
0DCA
0DCB
0DCE
0DD1
0DD4
0DD5
0DD8
0DD9

call new_line
lxi h,af_text
call put_str
lhld user_AF
mov a,h
call out2x
mov a,l
call out2x
call send_tab
call get_hex2
mov h,a
call get_hex2
mov l,a
shld user_AF

CDDA12
21B01E
CD5812
2A2CF0
7C
CDCB12
7D
CDCB12
CDEB12
CD9E13
67
CD9E13
6F
222CF0

0DDC CD3A0D
0DDF C9
0DE0
0DE0 FE62
0DE2 C20B0E
0DE5
0DE8
0DEB
0DEE
0DF1
0DF2
0DF5
0DF6
0DF9
0DFC
0DFF
0E00
0E03
0E04

CDDA12
21B41E
CD5812
2A2EF0
7C
CDCB12
7D
CDCB12
CDEB12
CD9E13
67
CD9E13
6F
222EF0

0E07 CD3A0D
0E0A C9

call send_prompt
ret
set_user1:
cpi "b"
jnz set_user2
call new_line
lxi h,bc_text
call put_str
lhld user_BC
mov a,h
call out2x
mov a,l
call out2x
call send_tab
call get_hex2
mov h,a
call get_hex2
mov l,a
shld user_BC
call send_prompt
ret
Page 34 of 64

B8085.LST
2585
2586
2587
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
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
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

29/12/2559 12:32

0E0B
0E0B FE64
0E0D C2360E
0E10
0E13
0E16
0E19
0E1C
0E1D
0E20
0E21
0E24
0E27
0E2A
0E2B
0E2E
0E2F

set_user2:
cpi "d"
jnz set_user3

CDDA12
21B81E
CD5812
2A30F0
7C
CDCB12
7D
CDCB12
CDEB12
CD9E13
67
CD9E13
6F
2230F0

call new_line
lxi h,de_text
call put_str
lhld user_DE
mov a,h
call out2x
mov a,l
call out2x
call send_tab
call get_hex2
mov h,a
call get_hex2
mov l,a
shld user_DE

0E32 CD3A0D
0E35 C9
0E36
0E36 FE68
0E38 C2610E
0E3B
0E3E
0E41
0E44
0E47
0E48
0E4B
0E4C
0E4F
0E52
0E55
0E56
0E59
0E5A

call send_prompt
ret
set_user3:
cpi "h"
jnz set_user4

CDDA12
21BC1E
CD5812
2A32F0
7C
CDCB12
7D
CDCB12
CDEB12
CD9E13
67
CD9E13
6F
2232F0

call new_line
lxi h,hl_text
call put_str
lhld user_HL
mov a,h
call out2x
mov a,l
call out2x
call send_tab
call get_hex2
mov h,a
call get_hex2
mov l,a
shld user_HL

0E5D CD3A0D
0E60 C9
0E61
0E61 FE73
0E63 C28C0E
0E66
0E69
0E6C
0E6F
0E72
0E73
0E76
0E77
0E7A
0E7D
0E80
0E81
0E84
0E85

call send_prompt
ret
set_user4:
cpi "s"
jnz set_user5

CDDA12
21C01E
CD5812
2A34F0
7C
CDCB12
7D
CDCB12
CDEB12
CD9E13
67
CD9E13
6F
2234F0

call new_line
lxi h,sp_text
call put_str
lhld user_SP
mov a,h
call out2x
mov a,l
call out2x
call send_tab
call get_hex2
mov h,a
call get_hex2
mov l,a
shld user_SP

0E88 CD3A0D
0E8B C9
0E8C
0E8C FE70
0E8E C2B70E
0E91
0E94
0E97
0E9A
0E9D
0E9E

CDDA12
21C91E
CD5812
2A2AF0
7C
CDCB12

call send_prompt
ret
set_user5:
cpi "p"
jnz set_user6
call new_line
lxi h,pc_text
call put_str
lhld user_PC
mov a,h
call out2x
Page 35 of 64

B8085.LST
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736

0EA1
0EA2
0EA5
0EA8
0EAB
0EAC
0EAF
0EB0

29/12/2559 12:32
7D
CDCB12
CDEB12
CD9E13
67
CD9E13
6F
222AF0

mov a,l
call out2x
call send_tab
call get_hex2
mov h,a
call get_hex2
mov l,a
shld user_PC

0EB3 CD3A0D
0EB6 C9

call send_prompt
ret

0EB7 C9

set_user6: ret

0EB8

exit_set_user:

0EB8 C9

0EB9
0EB9
0EBC
0EBF
0EC1
0EC2
0EC5
0EC6
0EC9
0EC9
0ECC
0ECD
0ED0
0ED1
0ED2
0ED5

ret

print_watch_ram:
CDDA12
2100F0
0E10
7C
CDCB12
7D
CDCB12

call new_line
lxi h, watch_ram
mvi c,16
mov a,h
call out2x
mov a,l
call out2x
watch1:

CDE512
7E
CDCB12
23
0D
C2C90E
C9

call space
mov a,m
call out2x
inx h
dcr c
jnz watch1
ret

;----------- clear watch variables-----------------------------------0ED6
0ED9
0EDB
0EDE
0EE1

3A22F0
FE63
C2F00E
2100F0
0E10

clear_watch: lda
cpi
jnz
lxi
mvi

command
"c"
exit_clear_watch
h, watch_ram
c,16

0EE3
0EE4
0EE5
0EE6
0EE7

AF
77
23
0D
C2E30E

clear1:

a
m,a
h
c
clear1

xra
mov
inx
dcr
jnz

0EEA CDB90E
0EED CD3A0D
0EF0 C9

call print_watch_ram
call send_prompt
exit_clear_watch: ret

;----------- print watch variables -----------------------------------0EF1
0EF1 3A22F0

print_watch:
lda command
Page 36 of 64

B8085.LST
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812

29/12/2559 12:32

0EF4 FE77
0EF6 C2FF0E

cpi "w"
jnz exit_watch

0EF9 CDB90E
0EFC CD3A0D

call print_watch_ram
call send_prompt

0EFF C9

exit_watch: ret

0F00

;---------- single step running with key space ----------------------single_step_:

0F00
0F03
0F05
0F08

3A22F0
FE20
C20B0F
CDBF09

0F0B
0F0B C9

lda command
cpi " "
jnz exit_step
call single_step
exit_step:
ret
;------- display stack area from top of stack to initial -------------

0F0C
0F0C 3A22F0
0F0F FE6B
0F11 C24B0F

stack_display:
lda command
cpi "k"
jnz exit_stack
;
;

lxi h,stack_text
call put_str

0F14 21391E
0F17 CD5812
0F1A CDDA12

lxi h,edit_text2
call put_str
call new_line

0F1D 2A34F0

lhld user_SP

0F20

stack_display1:

0F20
0F21
0F24
0F25

7C
CDCB12
7D
CDCB12

mov a,h
call out2x
mov a,l
call out2x

0F28
0F2B
0F2E
0F30

CDE512
CDE512
3E5B
CD2F12

call space
call space
mvi a,"["
call cout

0F33 7E
0F34 CDCB12

mov a,m
call out2x

0F37 3E5D
0F39 CD2F12

mvi a,"]"
call cout

0F3C CDDA12

call new_line

0F3F 23

inx h

0F40 119AF0

lxi d, user_stack+32+1

0F43 7D
0F44 AB
0F45 C2200F

mov a,l
xra e
jnz stack_display1

0F48 CD3A0D

call send_prompt

0F4B
0F4B C9

; load base of user stack

exit_stack:
ret

;---------------- registers display ---------------------------------0F4C
0F4C 3A22F0

register_display:
lda command
Page 37 of 64

B8085.LST
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888

29/12/2559 12:32

0F4F FE72
0F51 C27110
0F54

cpi "r"
jnz exit_register
register_display1:
;
;
;

lda uart_found
cpi 0
jz exit_register ; exit of no uart

0F54 CDDA12

call new_line

0F57
0F57 CDDA12

register_display2:
call new_line

0F5A
0F5D
0F60
0F63
0F64
0F67
0F68
0F6B

21B01E
CD5812
2A2CF0
7C
CDCB12
7D
CDCB12
CDE512

lxi h,af_text
call put_str
lhld user_AF
mov a,h
call out2x
mov a,l
call out2x
call space

0F6E
0F71
0F74
0F77
0F78
0F7B
0F7C

21B41E
CD5812
2A2EF0
7C
CDCB12
7D
CDCB12

lxi h,bc_text
call put_str
lhld user_BC
mov a,h
call out2x
mov a,l
call out2x

0F7F CDE512

call space

0F82
0F85
0F88
0F8B
0F8C
0F8F
0F90
0F93

21B81E
CD5812
2A30F0
7C
CDCB12
7D
CDCB12
CDE512

lxi h,de_text
call put_str
lhld user_DE
mov a,h
call out2x
mov a,l
call out2x
call space

0F96
0F99
0F9C
0F9F
0FA0
0FA3
0FA4

21BC1E
CD5812
2A32F0
7C
CDCB12
7D
CDCB12

lxi h,hl_text
call put_str
lhld user_HL
mov a,h
call out2x
mov a,l
call out2x

0FA7 CDE512

call space

0FAA
0FAD
0FB0
0FB3
0FB4
0FB7
0FB8

lxi h,sp_text
call put_str
lhld user_SP
mov a,h
call out2x
mov a,l
call out2x

21C01E
CD5812
2A34F0
7C
CDCB12
7D
CDCB12

0FBB CDE512

call space
;
;
;
;
;
;
;
;

0FBE
0FC1
0FC4
0FC7

21C91E
CD5812
2A2AF0
7C

lxi h,tos_text
call put_str
lhld tos
mov a,h
call out2x
mov a,l
call out2x
call space
lxi h,pc_text
call put_str
lhld user_PC
mov a,h
Page 38 of 64

B8085.LST
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964

29/12/2559 12:32

0FC8 CDCB12
0FCB 7D
0FCC CDCB12

call out2x
mov a,l
call out2x

0FCF CDE512

call space

0FD2
0FD5
0FD8
0FDB
0FDC
0FDE
0FE1
0FE3
0FE6

lxi h,sign_text
call put_str
lhld user_AF
mov a,l
ani 80h
jnz register_flag1
mvi a,"0"
call cout
jmp register_flag2

21E31E
CD5812
2A2CF0
7D
E680
C2E90F
3E30
CD2F12
C3EE0F

0FE9
0FE9 3E31
0FEB CD2F12

register_flag1:
mvi a,"1"
call cout

0FEE
0FEE CDE512

register_flag2:
call space

0FF1
0FF4
0FF7
0FFA
0FFB
0FFD
1000
1002
1005

217210
CD5812
2A2CF0
7D
E640
C20810
3E30
CD2F12
C30D10

lxi h,zero_text
call put_str
lhld user_AF
mov a,l
ani 40h
jnz register_flag3
mvi a,"0"
call cout
jmp register_flag4

1008
1008 3E31
100A CD2F12

register_flag3:
mvi a,"1"
call cout

100D
100D CDE512

register_flag4:
call space

1010
1013
1016
1019
101A
101C
101F
1021
1024

217510
CD5812
2A2CF0
7D
E610
C22710
3E30
CD2F12
C32C10

lxi h,AC_text
call put_str
lhld user_AF
mov a,l
ani 10h
jnz register_flag5
mvi a,"0"
call cout
jmp register_flag6

1027
1027 3E31
1029 CD2F12

register_flag5:
mvi a,"1"
call cout

102C
102C CDE512

register_flag6:
call space

102F
1032
1035
1038
1039
103B
103E
1040
1043

217910
CD5812
2A2CF0
7D
E604
C24610
3E30
CD2F12
C34B10

lxi h,P_text
call put_str
lhld user_AF
mov a,l
ani 4
jnz register_flag7
mvi a,"0"
call cout
jmp register_flag8

1046
1046 3E31
1048 CD2F12

register_flag7:
mvi a,"1"
call cout

104B
104B CDE512

register_flag8:
call space

104E 217C10
1051 CD5812

lxi h,CY_text
call put_str
Page 39 of 64

B8085.LST
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040

1054
1057
1058
105A
105D
105F
1062

29/12/2559 12:32
2A2CF0
7D
E601
C26510
3E30
CD2F12
C36A10

lhld user_AF
mov a,l
ani 1
jnz register_flag9
mvi a,"0"
call cout
jmp register_flag10

1065
1065 3E31
1067 CD2F12

register_flag9:
mvi a,"1"
call cout

106A
106A CDE512

register_flag10:
call space

106D CD3A0D
1070 C9

call send_prompt
ret

1071
1071 C9

exit_register:
ret

1072
1075
1079
107C

zero_text
AC_text
P_text
CY_text

5A3D00
41433D00
503D00
43593D00

dfb
dfb
dfb
dfb

"Z=",0
"AC=",0
"P=",0
"CY=",0

;----------------- fill constant to memory --------------------------1080

fill_memory:

1080
1083
1085
1088
108B

3A22F0
FE66
C2C310
216F1E
CD5812

lda command
cpi "f"
jnz exit_fill
lxi h,fill_text1
call put_str

108E
1091
1092
1095
1096

CD8513
67
CD8513
6F
E5

call get_hex1
mov h,a
call get_hex1
mov l,a
push h

; save begin address to stack

1097 21801E
109A CD5812

lxi h,fill_text2
call put_str

109D
10A0
10A1
10A4
10A5

call get_hex1
mov h,a
call get_hex1
mov l,a
push h
; save end address to stack

CD8513
67
CD8513
6F
E5

10A6 21901E
10A9 CD5812
10AC CD8513

lxi h,fill_text3
call put_str
call get_hex1

10AF 47

mov b,a

; byte save to B

10B0 D1

pop d

; end address in DE

10B1 E1

pop h

; begin address in HL

10B2

fill_memory1:

10B2 78
10B3 77
10B4 23

mov a,b
mov m,a
inx h

10B5 7D
10B6 BB
10B7 C2B210

mov a,l
cmp e
jnz fill_memory1

10BA 7C
10BB BA
10BC C2B210

mov a,h
cmp d
jnz fill_memory1
Page 40 of 64

B8085.LST
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116

29/12/2559 12:32

10BF CD3A0D
10C2 C9
10C3

call send_prompt
ret
exit_fill:

10C3 C9

ret

;---------------- monitor function list ------------------------------10C4

monitor_function:

10C4 3A22F0
10C7 FE6D
10C9 C2DC10

lda command
cpi "m"
jnz exit_monitor

10CC
10CF
10D2
10D5
10D8
10DB

call new_line
lxi h,monitor_text
call put_str
call new_line
call send_prompt
ret

CDDA12
216C22
CD5812
CDDA12
CD3A0D
C9

10DC
10DC C9

exit_monitor:
ret
;----------------------- jump to user program --------------------

10DD 3A22F0
10E0 FE6A
10E2 C22611

jump_to_user_pgm:
lda command
cpi "j"
jnz exit_jump

10E5 21471E
10E8 CD5812

lxi h, jump_text1
call put_str

10EB
10EE
10EF
10F2
10F3

lhld user_PC
mov a,h
call out2x
mov a,l
call out2x

2A2AF0
7C
CDCB12
7D
CDCB12

10F6 21591E
10F9 CD5812

lxi h,jump_text2
call put_str

10FC CD9E13

call get_hex2

10FF F5

push psw

1100 3A23F0
1103 E601
1105 C21711

lda flag1
ani 1
jnz skip_load_PC

1108 F1

pop psw

1109
110A
110D
110E
1111
1114

67
CD9E13
6F
222AF0
CDDA12
C39B09

mov h,a
call get_hex2
mov l,a
shld user_PC
call new_line
jmp go

1117
1117
1118
111B
111D
1120
1123

F1
3A23F0
E6FE
3223F0
CDDA12
C39B09

skip_load_PC:

1126 C9

pop psw
lda flag1
ani 0feh
sta flag1
call new_line
jmp go
exit_jump:

ret

;------------ edit memory ----------------------------------------Page 41 of 64

B8085.LST
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192

29/12/2559 12:32

1127 3A22F0
112A FE65
112C C2A911
112F
1132
1135
1138
1139
113C
113D

edit_location: lda command
cpi "e"
jnz exit_edit

21F61D
CD5812
CD8513
67
CD8513
6F
223CF0

lxi h, edit_text
call put_str
call get_hex1
mov h,a
call get_hex1
mov l,a
shld pointer
;user_PC

1140 210E1E
1143 CD5812

lxi h, edit_text1
call put_str

1146 21391E
1149 CD5812

lxi h, edit_text2
call put_str

114C CDDA12
114F
1152
1153
1156
1157
115A
115D
1160
1162
1165
1166
1169
116B

edit1:

2A3CF0
7C
CDCB12
7D
CDCB12
CDE512
CDE512
3E5B
CD2F12
7E
CDCB12
3E5D
CD2F12

call new_line
lhld pointer
mov a,h
call out2x
mov a,l
call out2x
call space
call space
mvi a,"["
call cout
mov a,m
call out2x
mvi a,"]"
call cout

;user_PC

116E CDE512

call space

1171 CD9E13

call get_hex2

1174 F5

push psw

1175 3A23F0
1178 E601
117A C29A11

lda flag1
ani 1
jnz exit_edit1

; Enter key?

117D 3A23F0
1180 E602
1182 C28A11

lda flag1
ani 2
jnz skip_edit1

; SPACE key?

1185 F1

pop psw

1186 77
1187 C39311

mov m,a
jmp skip_edit2

118A F1

skip_edit1: pop psw

118B 3A23F0
118E E6FD
1190 3223F0

lda flag1
ani 0fdh
sta flag1

1193
1193 23
1194 223CF0
1197 C34C11

skip_edit2:

119A F1

exit_edit1: pop psw

inx h
shld pointer
jmp edit1

119B 3A23F0
119E E6FE
11A0 3223F0

lda flag1
ani 0feh
sta flag1

11A3 CDDA12
11A6 CD3A0D

call new_line
call send_prompt

11A9 C9

exit_edit:

;user_PC

ret
Page 42 of 64

B8085.LST
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268

11AA
11AD
11AF
11B2
11B5
11B8
11BB
11BC
11BF
11C0
11C3

29/12/2559 12:32
3A22F0
FE6E
C2C611
21E61D
CD5812
CD8513
67
CD8513
6F
223CF0
CD3A0D

11C6

new_location: lda command
cpi "n"
jnz exit_new_location
lxi h,new_text
call put_str
call get_hex1
mov h,a
call get_hex1
mov l,a
shld pointer
; user_PC
call send_prompt
exit_new_location:

11C6 C9

11C7
11C7 3A22F0
11CA FE71
11CC C2DB11
11CF
11D2
11D5
11D8

ret

quick_home:
lda command
cpi "q"
jnz exit_quick_home

210081
222AF0
223CF0
CD3A0D

11DB
11DB C9

lxi h,home_address
shld user_PC
shld pointer
call send_prompt
exit_quick_home:
ret
; i/o address map

11DC 3A22F0
11DF FE69
11E1 C2ED11

io_address: lda command
cpi "i"
jnz exit_io

11E4 210321
11E7 CD5812
11EA CD3A0D
11ED C9

lxi h,io_text
call put_str
call send_prompt
exit_io:

ret

; help listing
11EE 3A22F0
11F1 FE3F
11F3 C20512
11F6
11F9
11FC
11FF
1202

216F12
CD6612
216E1F
CD5812
CD3A0D

1205 C9

help:

lda command
cpi "?"
jnz exit_help
lxi h,prompt3
call alt_put_str
lxi h,help_text1
call put_str
call send_prompt

exit_help:

ret

; initialize 16C550 uart to 9600 8n1 with 2MHz clock
; 2MHz/13 = 153846Hz
1206

init_uart:

1206 3E83
1208 D343

mvi a,83h
out uart_lcr

120A
120C
120E
1210

mvi
out
mvi
out

3E0D
D340
3E00
D341

1212 3E07
1214 D342

; set DLAB bit to access divider

a,13
uart_divisor_lsb
a,0
uart_divisor_msb ; 2MHz/13 = 153846 Hz
; 153846Hz/16 = 9615Hz
mvi a,7
out uart_fifo
; init fifo and clear all buffers
Page 43 of 64

B8085.LST
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344

29/12/2559 12:32

1216 3E03
1218 D343

121A
121B
121D
121F
1221
1224
1225
1228

AF
D347
DB47
FE00
CA2912
AF
3225F0
C9

mvi a,03h
out uart_lcr

; clar DLAB

; check uart line status, if the byte is FF then no uart
;
;
xra a
out uart_scr
; check if there is uart
in uart_scr
cpi 0
jz found
xra a
sta uart_found
ret

1229 3E01
122B 3225F0
122E C9

found

mvi a,1
sta uart_found
ret

122F 47

cout:

mov b,a

1230 DB45
1232 E620
1234 CA3012

cout1:

in uart_line_status
ani 20h
jz cout1

1237 78
1238 D340
123A C9

; save a

mov a,b
out uart_buffer
ret

; transmitter ready?
; restore a

123B
123D
123F
1242
1244

DB45
E601
CA3B12
DB40
C9

cin:

1245
1247
1249
124C
124E
1251

DB45
E601
CA5212
DB40
3222F0
C9

get_command: in uart_line_status
ani 1
jz no_data
in uart_buffer
sta command
; command = ASCII code
ret

1252 3EFF
1254 3222F0
1257 C9

in uart_line_status
ani 1
jz cin
in uart_buffer
ret

no_data:

mvi a,0ffh
sta command
ret

; data available?

; command == -1

; print string terminated by 0
; input: HL
1258
1259
125B
125E

7E
FE00
C25F12
C9

put_str:

mov a,m
; get A from [HL]
cpi 0
jnz put_str1
ret

125F CD2F12
1262 23
1263 F25812

put_str1: call cout
inx h
jp put_str

1266
1267
1269
126B
126E

7E
EEAA
FE00
C2A512
C9

alt_put_str:
xri
cpi
jnz
ret

126F
127F
128F
129F

A7A0A0E7FEprompt3:
E3E9F8E5FA
EBE3E4E3E4
E6FA83A7A0

12A5 CD2F12
12A8 23
12A9 F26612

mov a,m
0aah
0
put_str2

dfb
dfb
dfb
dfb

; get A from [HL]

0A7h,0A0h,0A0h,0E7h,0FEh,0E1h,087h,092h,09Fh,08Ah,092h,09
0E3h,0E9h,0F8h,0E5h,0FAh,0F8h,0E5h,0E9h,0EFh,0F9h,0F9h,0E
0EBh,0E3h,0E4h,0E3h,0E4h,0EDh,08Ah,0E1h,0E3h,0FEh,08Ah,082
0E6h,0FAh,083h,0A7h,0a0h,0aah

put_str2: call cout
inx h
jp alt_put_str

Page 44 of 64

B8085.LST
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420

29/12/2559 12:32

12AC 21581D
12AF CD5812
12B2 C9

send_prompt1: lxi h,prompt1
call put_str
ret

12B3 216F12
12B6 CD6612
12B9 C9

send_prompt3: lxi h,prompt3
call alt_put_str
ret

12BA
12BB
12BD
12BF
12C1
12C4

out1x:

push psw
ani 0fh
adi "0"
cpi 3Ah
jc out1x1
adi 7

12C6 CD2F12
12C9 F1
12CA C9

out1x1:

call cout
pop psw

12CB
12CB
12CC
12CD
12CE
12CF
12D2
12D3
12D4
12D5
12D6
12D9

out2x:

F5
E60F
C630
FE3A
DAC612
C607

ret

0F
0F
0F
0F
CDBA12
07
07
07
07
CDBA12
C9

rrc
rrc
rrc
rrc
call out1x
rlc
rlc
rlc
rlc
call out1x
ret
; new_line

12DA
12DC
12DF
12E1
12E4

3E0D
CD2F12
3E0A
CD2F12
C9

new_line:
mvi a,cr
call cout
mvi a,lf
call cout
ret

12E5 3E20
12E7 CD2F12
12EA C9

space:

mvi a," "
call cout
ret

12EB 3E09
12ED CD2F12
12F0 C9

send_tab:

mvi a,9
call cout
ret

12F1 3A22F0
12F4 FE68
12F6 C25013

hex_dump:

lda command
cpi "h"
jnz exit_hex_dump

12F9 CDDA12

call new_line

12FC 0E08

mvi c,8

12FE
12FF
1302
1305
1306
1309
130A
130D

C5
CDDA12
2A3CF0
7C
CDCB12
7D
CDCB12
CDE512

hex_dump2:

1310 0E10
1312
1315
1316
1319

CDE512
7E
CDCB12
23

; 8 lines

push b
call new_line
lhld pointer
mov a,h
call out2x
mov a,l
call out2x
call space

;user_PC

mvi c,16
hex_dump1:

call space
mov a,m
call out2x
inx h
Page 45 of 64

B8085.LST
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496

29/12/2559 12:32

131A 0D
131B C21213

dcr c
jnz hex_dump1

131E CDE512
1321 CDE512
1324 CDE512

call space
call space
call space
; print ASCII representation 20H-7FH
; outside such range, print . instead

1327 11F0FF
132A 19

lxi d,0FFF0h
dad d

132B 0E10

mvi c,16

132D 7E

hex_dump5: mov a,m

132E
1330
1333
1335
1338
133A

cpi 20h
jc hex_dump3
cpi 80h
jc hex_dump4
hex_dump3: mvi a,"."
hex_dump4: call cout

FE20
DA3813
FE80
DA3A13
3E2E
CD2F12

; load DE with -16
; ADD HL,DE

; <20H?

133D 23
133E 0D
133F C22D13

inx h
dcr c
jnz hex_dump5

1342 223CF0

shld pointer

1345 C1
1346 0D
1347 C2FE12

pop b
dcr c
jnz hex_dump2

134A CDDA12
134D CD3A0D

call new_line
call send_prompt

;user_PC

1350 C9

exit_hex_dump:

1351 210081
1354 0E64

dump_memory: lxi h,8100h
mvi c,100
; 100 bytes display

1356
1359
135A
135D
1360
1361
1362
1365

CDDA12
7E
CDCB12
CDE512
23
0D
C25913
C9

dump1:

;
;
;
;
;
1366
1368
136A
136D
136F
1371

D630
FE0A
DA7113
E6DF
D607

1371 C9

ret

call new_line
mov a,m
call out2x
call space
inx h
dcr c
jnz dump1
ret

convert ASCII letter to one nibble 0-F
0-9 -> al-30
A-F -> al-7
entry: A
exit: A

to_hex:

sui "0"
cpi 10
jc zero_nine
ani 11011111b
sui 7
; convert to A-F
zero_nine:
ret
; read two ASCII bytes and convert them to one bye 8-bit data
; exit: A
; used: A, E

1372
1375
1378
1379
137A

CD3B12
CD6613
0F
0F
0F

get_hex: call cin
call to_hex
rrc
rrc
rrc
Page 46 of 64

B8085.LST
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572

137B
137C
137D
1380
1383
1384

29/12/2559 12:32
0F
5F
CD3B12
CD6613
83
C9

rrc
mov e,a
call cin
call to_hex
add e
ret
; read two ASCII bytes echo to screen and convert them to one bye 8-bit data
; exit: A

1385
1388
138B
138E
138F
1390
1391
1392
1393
1396
1399
139C
139D

CD3B12
CD2F12
CD6613
0F
0F
0F
0F
5F
CD3B12
CD2F12
CD6613
83
C9

get_hex1: call cin
call cout
call to_hex
rrc
rrc
rrc
rrc
mov e,a
call cin
call cout
call to_hex
add e
ret
; read two ASCII bytes echo to screen and convert them to one bye 8-bit data
; exit: A

139E 3A23F0
13A1 E6FC
13A3 3223F0

get_hex2: lda flag1
ani 0fch
sta flag1

; clear flag1.1 and flag1.0

13A6 CD3B12
13A9 FE0D
13AB CAF113

call cin
cpi cr
jz exit_get_hex2

13AE FE20
13B0 CAFA13

cpi " "
jz exit_get_hex3

13B3 FE30
13B5 DA9E13

cpi 30h
jc get_hex2

13B8 FE40
13BA DAC713

cpi 40h
jc ascii_0_9

13BD FE61
13BF DA9E13

cpi 97
jc get_hex2

; < 97?

13C2 FE67
13C4 D29E13

cpi 103
jnc get_hex2

; >= 103?

13C7
13C7
13CA
13CD
13CE
13CF
13D0
13D1

; hex must be 0-9 and A-F

ascii_0_9:
CD2F12
CD6613
0F
0F
0F
0F
5F

13D2

call cout
call to_hex
rrc
rrc
rrc
rrc
mov e,a
get_2nd_hex:

13D2 CD3B12

call cin

13D5 FE30
13D7 DAD213

cpi 30h
; hex must be 0-9 and A-F
jc get_2nd_hex

13DA FE40
13DC DAE913

cpi 40h
jc ok_0_9

13DF FE61
13E1 DAD213

cpi 97
; < 97?
jc get_2nd_hex

13E4 FE67
13E6 D2D213

cpi 103
; >= 103?
jnc get_2nd_hex
Page 47 of 64

B8085.LST
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648

13E9
13E9
13EC
13EF
13F0

29/12/2559 12:32
ok_0_9:
CD2F12
CD6613
83
C9

13F1
13F1
13F4
13F6
13F9

ret
exit_get_hex2:

3A23F0
F601
3223F0
C9

13FA
13FA
13FD
13FF
1402

call cout
call to_hex
add e

lda flag1
ori 1
sta flag1
ret

; Q key has been pressed

exit_get_hex3:
3A23F0
F602
3223F0
C9

lda flag1
ori 2
sta flag1 ; SPACE key has been pressed
ret
; add check sum
; get record, write to SRAM and jump to 8000h
; entry: A= byte received, B= byte check sum
add_bcs:

macro
; add accumulator with byte check sum stored in B
push psw
add b
mov b,a
pop psw
endm

001B =

esc

equ 1bh

1403 CD3B12
1406 FE1B
1408 CA5A14

get_record: call cin
cpi 27
jz esc_quit

140B FE3A
140D C20314

cpi ":"
jnz get_record

; wait until begin of record found

1410 0600

mvi b,0

; byte check sum

1412 CD7213
1415 4F
1416
1416
1417
1418
1419
141A

F5
80
47
F1

141A CD7213
141D 67
141E
141E
141F
1420
1421
1422

F5
80
47
F1

call get_hex ; get number of byte
mov c,a
; put to c
add_bcs
push psw
add b
mov b,a
pop psw
endm
call get_hex ; get destination address, put to bx register
mov h,a
; save high byte
add_bcs
push psw
add b
mov b,a
pop psw
endm

1422 CD7213
1425 6F

call get_hex
mov l,a

1426
1426
1427
1428
1429
142A

add_bcs
push psw
add b
mov b,a
pop psw
endm

F5
80
47
F1

142A CD7213

call get_hex
Page 48 of 64

; and low byte

B8085.LST
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724

142D
142D
142E
142F
1430
1431

29/12/2559 12:32
add_bcs
push psw
add b
mov b,a
pop psw
endm

F5
80
47
F1

1431 FE01
1433 C25B14
1436 CD3B12
1439 FE0D
143B C23614

cpi
jnz
wait_cr:

1
data_record

call cin
cpi cr
jnz wait_cr

; until end of record sending! with cr detection

143E
1440
1442
1443

3EFF
D312
AF
D300

mvi
out
xra
out

1445
1448
144B
144E
1451
1454
1457

CDB914
CDE512
3A20F0
CDC901
21991E
CD5812
CDDA12

call print_bcd1
call space
lda bcs
call pint8u
lxi h,error_text
call put_str
call new_line

a, 0ffh
; turn speaker off
system_port_c
a
0
; turn off GPIO

145A C9

esc_quit:

145B CD7213
145E 77

data_record: call get_hex
mov m,a

145F
145F
1460
1461
1462
1463

; end of record type is 01 ?
; jump if not 01

ret
; get data byte
; save to SRAM at [HL]

add_bcs
push psw
add b
mov b,a
pop psw
endm

F5
80
47
F1

1463 CD8914

call inc_bcd1
;
;

ori 7fh
out system_port_c

; make buzzer sound

1466 23

inx h

; next location

1467 0D
1468 C25B14

dcr c
jnz data_record

; until c = 0

146B
146C
146D
146E

mov a,b
cma
mov b,a
inr b

; compute two's complement

146F CD7213

call get_hex

; get check sum

1472 B8
1473 CA7D14

cmp b
jz skip_error

1476 3A20F0
1479 3C
147A 3220F0

lda bcs
inr a
sta bcs

147D
147D
1480
1481
1484

78
2F
47
04

skip_error:
3A3AF0
07
323AF0
D300

1486 C30314

lda temp
rlc
sta temp
out 0
jmp get_record

; then shift into temp8
; send to GPIO
; back to next record

;---------------- increment BCD counter1 ------------------------Page 49 of 64

B8085.LST
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800

29/12/2559 12:32

1489 E5

inc_bcd1:

push h

148A 2141F0
148D AF

lxi h,bcd_counter1
xra a

148E
148F
1491
1492
1493

7E
C601
27
77
23

mov
adi
daa
mov
inx

a,m
1

1494
1495
1497
1498
1499
149A
149B
149D
149E

7E
CE00
27
77
23
7E
CE00
27
77

mov
aci
daa
mov
inx
mov
aci
daa
mov

a,m
0

m,a
h

m,a
h
a,m
0
m,a

149F E1

pop h

14A0 C9

ret

14A1 E5

inc_bcd2:

push h

14A2 2144F0
14A5 AF

lxi h,bcd_counter2
xra a

14A6
14A7
14A9
14AA
14AB

7E
C601
27
77
23

mov
adi
daa
mov
inx

a,m
1

14AC
14AD
14AF
14B0
14B1
14B2
14B3
14B5
14B6

7E
CE00
27
77
23
7E
CE00
27
77

mov
aci
daa
mov
inx
mov
aci
daa
mov

a,m
0

m,a
h

m,a
h
a,m
0
m,a

14B7 E1

pop h

14B8 C9

ret

14B9
14B9
14BC
14BD
14C0
14C3
14C4
14C7
14CA
14CB
14CE
14D1
14D4

2143F0
7E
CDCB12
2142F0
7E
CDCB12
2141F0
7E
CDCB12
21E61E
CD5812
C9

print_bcd1:

14D5
14D8
14DB
14DE
14E1

210000
2241F0
2242F0
2243F0
C9

clear_bcd1:

14E2
14E2 2146F0
14E5 7E
14E6 CDCB12

print_bcd2:

lxi h,bcd_counter1+2
mov a,m
call out2x
lxi h,bcd_counter1+1
mov a,m
call out2x
lxi h,bcd_counter1
mov a,m
call out2x
lxi h,byte_text
call put_str
ret
lxi h,0
shld bcd_counter1
shld bcd_counter1+1
shld bcd_counter1+2
ret
lxi h,bcd_counter2+2
mov a,m
call out2x
Page 50 of 64

B8085.LST
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876

29/12/2559 12:32

14E9
14EC
14ED
14F0
14F3
14F4
14F7
14FA
14FD

2145F0
7E
CDCB12
2144F0
7E
CDCB12
21E61E
CD5812
C9

14FE
1501
1504
1507
150A

210000
2244F0
2245F0
2246F0
C9

lxi h,bcd_counter2+1
mov a,m
call out2x
lxi h,bcd_counter2
mov a,m
call out2x
lxi h,byte_text
call put_str
ret
clear_bcd2:

lxi h,0
shld bcd_counter2
shld bcd_counter2+1
shld bcd_counter2+2
ret

; constants
150B
150B
150D
150F
1511
1513
1515
1517
1519
151B
151D
151F
1521
1523
1525
1527
1529
152B
152D
152F
1531
1533
1535
1537
1539
153B
153D
153F
1541
1543
1545
1547
1549
154B
154D
154F
1551
1553
1555
1557
1559
155B
155D
155F
1561
1563
1565
1567
1569
156B
156D
156F
1571
1573
1575
1577
1579

INS_TABLE:
0B17
1017
1717
1E17
2417
2A17
3017
3717
3C17
4117
4717
4E17
5417
5A17
6017
6717
6C17
7117
7817
7F17
8517
8B17
9117
9817
9D17
A217
A817
AF17
B517
BB17
C117
C817
CD17
D217
D917
DF17
E517
EB17
F117
F817
FD17
0218
0818
0E18
1418
1A18
2018
2718
2C18
3118
3918
3E18
4518
4B18
5118
5818

DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL

C0 ;
C1 ;
C2 ;
C3 ;
C4 ;
C5 ;
C6 ;
C7 ;
C8 ;
C9 ;
CA ;
CB ;
CC ;
CD ;
CE ;
CF ;
C10 ;
C11 ;
C12 ;
C13 ;
C14 ;
C15 ;
C16 ;
C17 ;
C18 ;
C19 ;
C1A ;
C1B ;
C1C ;
C1D ;
C1E ;
C1F ;
C20 ;
C21 ;
C22 ;
C23 ;
C24 ;
C25 ;
C26 ;
C27 ;
C28 ;
C29 ;
C2A ;
C2B ;
C2C ;
C2D ;
C2E ;
C2F ;
C30 ;
C31 ;
C32 ;
C33 ;
C34 ;
C35 ;
C36 ;
C37 ;

"NOP",TAB,RS
"LXI",TAB,"B,",RS
"STAX",TAB,"B",RS
"INX",TAB,"B",RS
"INR",TAB,"B",RS
"DCR",TAB,"B",RS
"MVI",TAB,"B,",RS
"RLC",TAB,RS
"DFB",TAB,RS
"DAD",TAB,"B",RS
"LDAX",TAB,"B",RS
"DCX",TAB,"B",RS
"INR",TAB,"C",RS
"DCR",TAB,"C",RS
"MVI",TAB,"C,",RS
"RRC",TAB,RS
"DFB",TAB,RS
"LXI",TAB,"D,",RS
"STAX",TAB,"D",RS
"INX",TAB,"D",RS
"INR",TAB,"D",RS
"DCR",TAB,"D",RS
"MVI",TAB,"D,",RS
"RAL",TAB,RS
"DFB",TAB,RS
"DAD",TAB,"D",RS
"LDAX",TAB,"D",RS
"DCX",TAB,"D",RS
"INR",TAB,"E",RS
"DCR",TAB,"E",RS
"MVI",TAB,"E,",RS
"RAR",TAB,RS
"RIM",TAB,RS
"LXI",TAB,"H,",RS
"SHLD",TAB,RS
"INX",TAB,"H",RS
"INR",TAB,"H",RS
"DCR",TAB,"H",RS
"MVI",TAB,"H,",RS
"DAA",TAB,RS
"DFB",TAB,RS
"DAD",TAB,"H",RS
"LHLD",TAB,RS
"DCX",TAB,"H",RS
"INR",TAB,"L",RS
"DCR",TAB,"L",RS
"MVI",TAB,"L,",RS
"CMA",TAB,RS
"SIM",TAB,RS
"LXI",TAB,"SP,",RS
"STA",TAB,RS
"INX",TAB,"SP",RS
"INR",TAB,"M",RS
"DCR",TAB,"M",RS
"MVI",TAB,"M,",RS
"STC",TAB,RS
Page 51 of 64

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
16
17
; 18
; 19
; 1A
; 1B
; 1C
; 1D
; 1E
; 1F
; 20
; 21
; 22
; 23
; 24
; 25
; 26
; 27
; 28
; 29
; 2A
; 2B
; 2C
; 2D
; 2E
; 2F
; 30
; 31
; 32
; 33
; 34
; 35
; 36
; 37

B8085.LST
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952

157B
157D
157F
1581
1583
1585
1587
1589
158B
158D
158F
1591
1593
1595
1597
1599
159B
159D
159F
15A1
15A3
15A5
15A7
15A9
15AB
15AD
15AF
15B1
15B3
15B5
15B7
15B9
15BB
15BD
15BF
15C1
15C3
15C5
15C7
15C9
15CB
15CD
15CF
15D1
15D3
15D5
15D7
15D9
15DB
15DD
15DF
15E1
15E3
15E5
15E7
15E9
15EB
15ED
15EF
15F1
15F3
15F5
15F7
15F9
15FB
15FD
15FF
1601
1603
1605
1607
1609
160B
160D
160F
1611

29/12/2559 12:32
5D18
6218
6918
6E18
7518
7B18
8118
8818
8D18
9518
9D18
A518
AD18
B518
BD18
C518
CD18
D518
DD18
E518
ED18
F518
FD18
0519
0D19
1519
1D19
2519
2D19
3519
3D19
4519
4D19
5519
5D19
6519
6D19
7519
7D19
8519
8D19
9519
9D19
A519
AD19
B519
BD19
C519
CD19
D519
DD19
E519
ED19
F519
FD19
051A
0D1A
151A
1D1A
251A
2D1A
351A
3D1A
421A
4A1A
521A
5A1A
621A
6A1A
721A
7A1A
821A
8A1A
901A
961A
9C1A

DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL

C38
C39
C3A
C3B
C3C
C3D
C3E
C3F
C40
C41
C42
C43
C44
C45
C46
C47
C48
C49
C4A
C4B
C4C
C4D
C4E
C4F
C50
C51
C52
C53
C54
C55
C56
C57
C58
C59
C5A
C5B
C5C
C5D
C5E
C5F
C60
C61
C62
C63
C64
C65
C66
C67
C68
C69
C6A
C6B
C6C
C6D
C6E
C6F
C70
C71
C72
C73
C74
C75
C76
C77
C78
C79
C7A
C7B
C7C
C7D
C7E
C7F
C80
C81
C82
C83

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

"DFB",TAB,RS
"DAD",TAB,"SP",RS
"LDA",TAB,RS
"DCX",TAB,"SP",RS
"INR",TAB,"A",RS
"DCR",TAB,"A",RS
"MVI",TAB,"A,",RS
"CMC",TAB,RS
"MOV",TAB,"B,B",RS
"MOV",TAB,"B,C",RS
"MOV",TAB,"B,D",RS
"MOV",TAB,"B,E",RS
"MOV",TAB,"B,H",RS
"MOV",TAB,"B,L",RS
"MOV",TAB,"B,M",RS
"MOV",TAB,"B,A",RS
"MOV",TAB,"C,B",RS
"MOV",TAB,"C,C",RS
"MOV",TAB,"C,D",RS
"MOV",TAB,"C,E",RS
"MOV",TAB,"C,H",RS
"MOV",TAB,"C,L",RS
"MOV",TAB,"C,M",RS
"MOV",TAB,"C,A",RS
"MOV",TAB,"D,B",RS
"MOV",TAB,"D,C",RS
"MOV",TAB,"D,D",RS
"MOV",TAB,"D,E",RS
"MOV",TAB,"D,H",RS
"MOV",TAB,"D,L",RS
"MOV",TAB,"D,M",RS
"MOV",TAB,"D,A",RS
"MOV",TAB,"E,B",RS
"MOV",TAB,"E,C",RS
"MOV",TAB,"E,D",RS
"MOV",TAB,"E,E",RS
"MOV",TAB,"E,H",RS
"MOV",TAB,"E,L",RS
"MOV",TAB,"E,M",RS
"MOV",TAB,"E,A",RS
"MOV",TAB,"H,B",RS
"MOV",TAB,"H,C",RS
"MOV",TAB,"H,D",RS
"MOV",TAB,"H,E",RS
"MOV",TAB,"H,H",RS
"MOV",TAB,"H,L",RS
"MOV",TAB,"H,M",RS
"MOV",TAB,"H,A",RS
"MOV",TAB,"L,B",RS
"MOV",TAB,"L,C",RS
"MOV",TAB,"L,D",RS
"MOV",TAB,"L,E",RS
"MOV",TAB,"L,H",RS
"MOV",TAB,"L,L",RS
"MOV",TAB,"L,M",RS
"MOV",TAB,"L,A",RS
"MOV",TAB,"M,B",RS
"MOV",TAB,"M,C",RS
"MOV",TAB,"M,D",RS
"MOV",TAB,"M,E",RS
"MOV",TAB,"M,H",RS
"MOV",TAB,"M,L",RS
"HLT",TAB,RS
"MOV",TAB,"M,A",RS
"MOV",TAB,"A,B",RS
"MOV",TAB,"A,C",RS
"MOV",TAB,"A,D",RS
"MOV",TAB,"A,E",RS
"MOV",TAB,"A,H",RS
"MOV",TAB,"A,L",RS
"MOV",TAB,"A,M",RS
"MOV",TAB,"A,A",RS
"ADD",TAB,"B",RS
"ADD",TAB,"C",RS
"ADD",TAB,"D",RS
"ADD",TAB,"E",RS
Page 52 of 64

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

; 38
39
3A
3B
3C
3D
3E
3F
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
5F
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
71
72
73
74
75
76
77
78
79
7A
7B
7C
7D
7E
7F
80
81
82
83

B8085.LST
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028

1613
1615
1617
1619
161B
161D
161F
1621
1623
1625
1627
1629
162B
162D
162F
1631
1633
1635
1637
1639
163B
163D
163F
1641
1643
1645
1647
1649
164B
164D
164F
1651
1653
1655
1657
1659
165B
165D
165F
1661
1663
1665
1667
1669
166B
166D
166F
1671
1673
1675
1677
1679
167B
167D
167F
1681
1683
1685
1687
1689
168B
168D
168F
1691
1693
1695
1697
1699
169B
169D
169F
16A1
16A3
16A5
16A7
16A9

29/12/2559 12:32
A21A
A81A
AE1A
B41A
BA1A
C01A
C61A
CC1A
D21A
D81A
DE1A
E41A
EA1A
F01A
F61A
FC1A
021B
081B
0E1B
141B
1A1B
201B
261B
2C1B
321B
381B
3E1B
441B
4A1B
501B
561B
5C1B
621B
681B
6E1B
741B
7A1B
801B
861B
8C1B
921B
981B
9E1B
A41B
AA1B
B01B
B61B
BC1B
C21B
C81B
CE1B
D41B
DA1B
E01B
E61B
EC1B
F21B
F81B
FE1B
041C
0A1C
0F1C
151C
1A1C
1F1C
241C
2B1C
301C
361C
3A1C
3F1C
431C
481C
4C1C
521C
571C

DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL

C84
C85
C86
C87
C88
C89
C8A
C8B
C8C
C8D
C8E
C8F
C90
C91
C92
C93
C94
C95
C96
C97
C98
C99
C9A
C9B
C9C
C9D
C9E
C9F
CA0
CA1
CA2
CA3
CA4
CA5
CA6
CA7
CA8
CA9
CAA
CAB
CAC
CAD
CAE
CAF
CB0
CB1
CB2
CB3
CB4
CB5
CB6
CB7
CB8
CB9
CBA
CBB
CBC
CBD
CBE
CBF
CC0
CC1
CC2
CC3
CC4
CC5
CC6
CC7
CC8
CC9
CCA
CCB
CCC
CCD
CCE
CCF

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

"ADD",TAB,"H",RS
"ADD",TAB,"L",RS
"ADD",TAB,"M",RS
"ADD",TAB,"A",RS
"ADC",TAB,"B",RS
"ADC",TAB,"C",RS
"ADC",TAB,"D",RS
"ADC",TAB,"E",RS
"ADC",TAB,"H",RS
"ADC",TAB,"L",RS
"ADC",TAB,"M",RS
"ADC",TAB,"A",RS
"SUB",TAB,"B",RS
"SUB",TAB,"C",RS
"SUB",TAB,"D",RS
"SUB",TAB,"E",RS
"SUB",TAB,"H",RS
"SUB",TAB,"L",RS
"SUB",TAB,"M",RS
"SUB",TAB,"A",RS
"SBB",TAB,"B",RS
"SBB",TAB,"C",RS
"SBB",TAB,"D",RS
"SBB",TAB,"E",RS
"SBB",TAB,"H",RS
"SBB",TAB,"L",RS
"SBB",TAB,"M",RS
"SBB",TAB,"A",RS
"ANA",TAB,"B",RS
"ANA",TAB,"C",RS
"ANA",TAB,"D",RS
"ANA",TAB,"E",RS
"ANA",TAB,"H",RS
"ANA",TAB,"L",RS
"ANA",TAB,"M",RS
"ANA",TAB,"A",RS
"XRA",TAB,"B",RS
"XRA",TAB,"C",RS
"XRA",TAB,"D",RS
"XRA",TAB,"E",RS
"XRA",TAB,"H",RS
"XRA",TAB,"L",RS
"XRA",TAB,"M",RS
"XRA",TAB,"A",RS
"ORA",TAB,"B",RS
"ORA",TAB,"C",RS
"ORA",TAB,"D",RS
"ORA",TAB,"E",RS
"ORA",TAB,"H",RS
"ORA",TAB,"L",RS
"ORA",TAB,"M",RS
"ORA",TAB,"A",RS
"CMP",TAB,"B",RS
"CMP",TAB,"C",RS
"CMP",TAB,"D",RS
"CMP",TAB,"E",RS
"CMP",TAB,"H",RS
"CMP",TAB,"L",RS
"CMP",TAB,"M",RS
"CMP",TAB,"A",RS
"RNZ",TAB,RS
"POP",TAB,"B",RS
"JNZ",TAB,RS
"JMP",TAB,RS
"CNZ",TAB,RS
"PUSH",TAB,"B",RS
"ADI",TAB,RS
"RST",TAB,"0",RS
"RZ",TAB,RS
"RET",TAB,RS
"JZ",TAB,RS
"DFB",TAB,RS
"CZ",TAB,RS
"CALL",TAB,RS
"ACI",TAB,RS
"RST",TAB,"1",RS
Page 53 of 64

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

84
85
86
87
88
89
8A
8B
8C
8D
8E
8F
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AA
AB
AC
AD
AE
AF
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BA
BB
BC
BD
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
; CB
; CC
; CD
; CE
; CF

B8085.LST
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104

16AB
16AD
16AF
16B1
16B3
16B5
16B7
16B9
16BB
16BD
16BF
16C1
16C3
16C5
16C7
16C9
16CB
16CD
16CF
16D1
16D3
16D5
16D7
16D9
16DB
16DD
16DF
16E1
16E3
16E5
16E7
16E9
16EB
16ED
16EF
16F1
16F3
16F5
16F7
16F9
16FB
16FD
16FF
1701
1703
1705
1707
1709

29/12/2559 12:32
5D1C
621C
681C
6D1C
721C
771C
7E1C
831C
891C
8D1C
921C
961C
9A1C
9E1C
A31C
A81C
AE1C
B31C
B91C
BE1C
C41C
C91C
D01C
D51C
DB1C
E01C
E61C
EB1C
F11C
F61C
FB1C
001D
061D
0A1D
121D
161D
1A1D
1E1D
271D
2C1D
321D
361D
3C1D
401D
441D
481D
4D1D
521D

DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL
DWL

CD0
CD1
CD2
CD3
CD4
CD5
CD6
CD7
CD8
CD9
CDA
CDB
CDC
CDD
CDE
CDF
CE0
CE1
CE2
CE3
CE4
CE5
CE6
CE7
CE8
CE9
CEA
CEB
CEC
CED
CEE
CEF
CF0
CF1
CF2
CF3
CF4
CF5
CF6
CF7
CF8
CF9
CFA
CFB
CFC
CFD
CFE
CFF

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

"RNC",TAB,RS
"POP",TAB,"D",RS
"JNC",TAB,RS
"OUT",TAB,RS
"CNC",TAB,RS
"PUSH",TAB,"D",RS
"SUI",TAB,RS
"RST",TAB,"2",RS
"RC",TAB,RS
"DFB",TAB,RS
"JC",TAB,RS
"IN",TAB,RS
"CC",TAB,RS
"DFB",TAB,RS
"SBI",TAB,RS
"RST",TAB,"3",RS
"RPO",TAB,RS
"POP",TAB,"H",RS
"JPO",TAB,RS
"XTHL",TAB,RS
"CPO",TAB,RS
"PUSH",TAB,"H",RS
"ANI",TAB,RS
"RST",TAB,"4",RS
"RPE",TAB,RS
"PCHL",TAB,RS
"JPE",TAB,RS
"XCHG",TAB,RS
"CPE",TAB,RS
"DFB",TAB,RS
"XRI",TAB,RS
"RST",TAB,"5",RS
"RP",TAB,RS
"POP",TAB,"PSW",RS
"JP",TAB,RS
"DI",TAB,RS
"CP",TAB,RS
"PUSH",TAB,"PSW",RS
"ORI",TAB,RS
"RST",TAB,"6",RS
"RM",TAB,RS
"SPHL",TAB,RS
"JM",TAB,RS
"EI",TAB,RS
"CM",TAB,RS
"DFB",TAB,RS
"CPI",TAB,RS
"RST",TAB,"7",RS,

;
;
;
;
;
;
;
;
;

D0
D1
D2
D3
D4
D5
D6
D7
D8
; D9
; DA
; DFB
; DC
; DD
; DE
; DF
; E0
; E1
; E2
; E3
; E4
; E5
; E6
; E7
; E8
; E9
; EA
; EB
; EC
; ED
; EE
; EF
; F0
; F1
; F2
; F3
; F4
; F5
; F6
; F7
; F8
; F9
; FA
; FB
; FC
; FD
; FE
; FF

; --------- mnemonic table --------------------------------------170B
170B
1710
1717
171E
1724
172A
1730
1737
173C
1741
1747
174E
1754
175A
1760
1767
176C
1771
1778
177F
1785
178B
1791

MNEM
4E4F500900C0
4C58490942C1
5354415809C2
494E580942C3
494E520942C4
4443520942C5
4D56490942C6
524C430900C7
4446420900C8
4441440942C9
4C44415809CA
4443580942CB
494E520943CC
4443520943CD
4D56490943CE
5252430900CF
4446420900C10
4C58490944C11
5354415809C12
494E580944C13
494E520944C14
4443520944C15
4D56490944C16

DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB

"NOP",TAB,RS
"LXI",TAB,"B,",RS
"STAX",TAB,"B",RS
"INX",TAB,"B",RS
"INR",TAB,"B",RS
"DCR",TAB,"B",RS
"MVI",TAB,"B,",RS
"RLC",TAB,RS
"DFB",TAB,RS
"DAD",TAB,"B",RS
"LDAX",TAB,"B",RS
"DCX",TAB,"B",RS
"INR",TAB,"C",RS
"DCR",TAB,"C",RS
"MVI",TAB,"C,",RS
"RRC",TAB,RS
"DFB",TAB,RS
"LXI",TAB,"D,",RS
"STAX",TAB,"D",RS
"INX",TAB,"D",RS
"INR",TAB,"D",RS
"DCR",TAB,"D",RS
"MVI",TAB,"D,",RS
Page 54 of 64

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
; 10
; 11
; 12
; 13
; 14
; 15
; 16

B8085.LST
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180

1798
179D
17A2
17A8
17AF
17B5
17BB
17C1
17C8
17CD
17D2
17D9
17DF
17E5
17EB
17F1
17F8
17FD
1802
1808
180E
1814
181A
1820
1827
182C
1831
1839
183E
1845
184B
1851
1858
185D
1862
1869
186E
1875
187B
1881
1888
188D
1895
189D
18A5
18AD
18B5
18BD
18C5
18CD
18D5
18DD
18E5
18ED
18F5
18FD
1905
190D
1915
191D
1925
192D
1935
193D
1945
194D
1955
195D
1965
196D
1975
197D
1985
198D
1995
199D

29/12/2559 12:32
52414C0900C17
4446420900C18
4441440944C19
4C44415809C1A
4443580944C1B
494E520945C1C
4443520945C1D
4D56490945C1E
5241520900C1F
52494D0900C20
4C58490948C21
53484C4409C22
494E580948C23
494E520948C24
4443520948C25
4D56490948C26
4441410900C27
4446420900C28
4441440948C29
4C484C4409C2A
4443580948C2B
494E52094CC2C
444352094CC2D
4D5649094CC2E
434D410900C2F
53494D0900C30
4C58490953C31
5354410900C32
494E580953C33
494E52094DC34
444352094DC35
4D5649094DC36
5354430900C37
4446420900C38
4441440953C39
4C44410900C3A
4443580953C3B
494E520941C3C
4443520941C3D
4D56490941C3E
434D430900C3F
4D4F560942C40
4D4F560942C41
4D4F560942C42
4D4F560942C43
4D4F560942C44
4D4F560942C45
4D4F560942C46
4D4F560942C47
4D4F560943C48
4D4F560943C49
4D4F560943C4A
4D4F560943C4B
4D4F560943C4C
4D4F560943C4D
4D4F560943C4E
4D4F560943C4F
4D4F560944C50
4D4F560944C51
4D4F560944C52
4D4F560944C53
4D4F560944C54
4D4F560944C55
4D4F560944C56
4D4F560944C57
4D4F560945C58
4D4F560945C59
4D4F560945C5A
4D4F560945C5B
4D4F560945C5C
4D4F560945C5D
4D4F560945C5E
4D4F560945C5F
4D4F560948C60
4D4F560948C61
4D4F560948C62

DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB

"RAL",TAB,RS
"DFB",TAB,RS
"DAD",TAB,"D",RS
"LDAX",TAB,"D",RS
"DCX",TAB,"D",RS
"INR",TAB,"E",RS
"DCR",TAB,"E",RS
"MVI",TAB,"E,",RS
"RAR",TAB,RS
"RIM",TAB,RS
"LXI",TAB,"H,",RS
"SHLD",TAB,RS
"INX",TAB,"H",RS
"INR",TAB,"H",RS
"DCR",TAB,"H",RS
"MVI",TAB,"H,",RS
"DAA",TAB,RS
"DFB",TAB,RS
"DAD",TAB,"H",RS
"LHLD",TAB,RS
"DCX",TAB,"H",RS
"INR",TAB,"L",RS
"DCR",TAB,"L",RS
"MVI",TAB,"L,",RS
"CMA",TAB,RS
"SIM",TAB,RS
"LXI",TAB,"SP,",RS
"STA",TAB,RS
"INX",TAB,"SP",RS
"INR",TAB,"M",RS
"DCR",TAB,"M",RS
"MVI",TAB,"M,",RS
"STC",TAB,RS
"DFB",TAB,RS
"DAD",TAB,"SP",RS
"LDA",TAB,RS
"DCX",TAB,"SP",RS
"INR",TAB,"A",RS
"DCR",TAB,"A",RS
"MVI",TAB,"A,",RS
"CMC",TAB,RS
"MOV",TAB,"B,B",RS
"MOV",TAB,"B,C",RS
"MOV",TAB,"B,D",RS
"MOV",TAB,"B,E",RS
"MOV",TAB,"B,H",RS
"MOV",TAB,"B,L",RS
"MOV",TAB,"B,M",RS
"MOV",TAB,"B,A",RS
"MOV",TAB,"C,B",RS
"MOV",TAB,"C,C",RS
"MOV",TAB,"C,D",RS
"MOV",TAB,"C,E",RS
"MOV",TAB,"C,H",RS
"MOV",TAB,"C,L",RS
"MOV",TAB,"C,M",RS
"MOV",TAB,"C,A",RS
"MOV",TAB,"D,B",RS
"MOV",TAB,"D,C",RS
"MOV",TAB,"D,D",RS
"MOV",TAB,"D,E",RS
"MOV",TAB,"D,H",RS
"MOV",TAB,"D,L",RS
"MOV",TAB,"D,M",RS
"MOV",TAB,"D,A",RS
"MOV",TAB,"E,B",RS
"MOV",TAB,"E,C",RS
"MOV",TAB,"E,D",RS
"MOV",TAB,"E,E",RS
"MOV",TAB,"E,H",RS
"MOV",TAB,"E,L",RS
"MOV",TAB,"E,M",RS
"MOV",TAB,"E,A",RS
"MOV",TAB,"H,B",RS
"MOV",TAB,"H,C",RS
"MOV",TAB,"H,D",RS
Page 55 of 64

; 17
; 18
; 19
; 1A
; 1B
; 1C
; 1D
; 1E
; 1F
; 20
; 21
; 22
; 23
; 24
; 25
; 26
; 27
; 28
; 29
; 2A
; 2B
; 2C
; 2D
; 2E
; 2F
; 30
; 31
; 32
; 33
; 34
; 35
; 36
; 37
; 38
; 39
; 3A
; 3B
; 3C
; 3D
; 3E
; 3F
; 40
; 41
; 42
; 43
; 44
; 45
; 46
; 47
; 48
; 49
; 4A
; 4B
; 4C
; 4D
; 4E
; 4F
; 50
; 51
; 52
; 53
; 54
; 55
; 56
; 57
; 58
; 59
; 5A
; 5B
; 5C
; 5D
; 5E
; 5F
; 60
; 61
; 62

B8085.LST
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256

19A5
19AD
19B5
19BD
19C5
19CD
19D5
19DD
19E5
19ED
19F5
19FD
1A05
1A0D
1A15
1A1D
1A25
1A2D
1A35
1A3D
1A42
1A4A
1A52
1A5A
1A62
1A6A
1A72
1A7A
1A82
1A8A
1A90
1A96
1A9C
1AA2
1AA8
1AAE
1AB4
1ABA
1AC0
1AC6
1ACC
1AD2
1AD8
1ADE
1AE4
1AEA
1AF0
1AF6
1AFC
1B02
1B08
1B0E
1B14
1B1A
1B20
1B26
1B2C
1B32
1B38
1B3E
1B44
1B4A
1B50
1B56
1B5C
1B62
1B68
1B6E
1B74
1B7A
1B80
1B86
1B8C
1B92
1B98
1B9E

29/12/2559 12:32
4D4F560948C63
4D4F560948C64
4D4F560948C65
4D4F560948C66
4D4F560948C67
4D4F56094CC68
4D4F56094CC69
4D4F56094CC6A
4D4F56094CC6B
4D4F56094CC6C
4D4F56094CC6D
4D4F56094CC6E
4D4F56094CC6F
4D4F56094DC70
4D4F56094DC71
4D4F56094DC72
4D4F56094DC73
4D4F56094DC74
4D4F56094DC75
484C540900C76
4D4F56094DC77
4D4F560941C78
4D4F560941C79
4D4F560941C7A
4D4F560941C7B
4D4F560941C7C
4D4F560941C7D
4D4F560941C7E
4D4F560941C7F
4144440942C80
4144440943C81
4144440944C82
4144440945C83
4144440948C84
414444094CC85
414444094DC86
4144440941C87
4144430942C88
4144430943C89
4144430944C8A
4144430945C8B
4144430948C8C
414443094CC8D
414443094DC8E
4144430941C8F
5355420942C90
5355420943C91
5355420944C92
5355420945C93
5355420948C94
535542094CC95
535542094DC96
5355420941C97
5342420942C98
5342420943C99
5342420944C9A
5342420945C9B
5342420948C9C
534242094CC9D
534242094DC9E
5342420941C9F
414E410942CA0
414E410943CA1
414E410944CA2
414E410945CA3
414E410948CA4
414E41094CCA5
414E41094DCA6
414E410941CA7
5852410942CA8
5852410943CA9
5852410944CAA
5852410945CAB
5852410948CAC
585241094CCAD
585241094DCAE

DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB

"MOV",TAB,"H,E",RS
"MOV",TAB,"H,H",RS
"MOV",TAB,"H,L",RS
"MOV",TAB,"H,M",RS
"MOV",TAB,"H,A",RS
"MOV",TAB,"L,B",RS
"MOV",TAB,"L,C",RS
"MOV",TAB,"L,D",RS
"MOV",TAB,"L,E",RS
"MOV",TAB,"L,H",RS
"MOV",TAB,"L,L",RS
"MOV",TAB,"L,M",RS
"MOV",TAB,"L,A",RS
"MOV",TAB,"M,B",RS
"MOV",TAB,"M,C",RS
"MOV",TAB,"M,D",RS
"MOV",TAB,"M,E",RS
"MOV",TAB,"M,H",RS
"MOV",TAB,"M,L",RS
"HLT",TAB,RS
"MOV",TAB,"M,A",RS
"MOV",TAB,"A,B",RS
"MOV",TAB,"A,C",RS
"MOV",TAB,"A,D",RS
"MOV",TAB,"A,E",RS
"MOV",TAB,"A,H",RS
"MOV",TAB,"A,L",RS
"MOV",TAB,"A,M",RS
"MOV",TAB,"A,A",RS
"ADD",TAB,"B",RS
"ADD",TAB,"C",RS
"ADD",TAB,"D",RS
"ADD",TAB,"E",RS
"ADD",TAB,"H",RS
"ADD",TAB,"L",RS
"ADD",TAB,"M",RS
"ADD",TAB,"A",RS
"ADC",TAB,"B",RS
"ADC",TAB,"C",RS
"ADC",TAB,"D",RS
"ADC",TAB,"E",RS
"ADC",TAB,"H",RS
"ADC",TAB,"L",RS
"ADC",TAB,"M",RS
"ADC",TAB,"A",RS
"SUB",TAB,"B",RS
"SUB",TAB,"C",RS
"SUB",TAB,"D",RS
"SUB",TAB,"E",RS
"SUB",TAB,"H",RS
"SUB",TAB,"L",RS
"SUB",TAB,"M",RS
"SUB",TAB,"A",RS
"SBB",TAB,"B",RS
"SBB",TAB,"C",RS
"SBB",TAB,"D",RS
"SBB",TAB,"E",RS
"SBB",TAB,"H",RS
"SBB",TAB,"L",RS
"SBB",TAB,"M",RS
"SBB",TAB,"A",RS
"ANA",TAB,"B",RS
"ANA",TAB,"C",RS
"ANA",TAB,"D",RS
"ANA",TAB,"E",RS
"ANA",TAB,"H",RS
"ANA",TAB,"L",RS
"ANA",TAB,"M",RS
"ANA",TAB,"A",RS
"XRA",TAB,"B",RS
"XRA",TAB,"C",RS
"XRA",TAB,"D",RS
"XRA",TAB,"E",RS
"XRA",TAB,"H",RS
"XRA",TAB,"L",RS
"XRA",TAB,"M",RS
Page 56 of 64

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
71
72
73
74
75
76
77
78
79
7A
7B
7C
7D
7E
7F
80
81
82
83
84
85
86
87
88
89
8A
8B
8C
8D
8E
8F
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AA
AB
AC
AD
AE

B8085.LST
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332

1BA4
1BAA
1BB0
1BB6
1BBC
1BC2
1BC8
1BCE
1BD4
1BDA
1BE0
1BE6
1BEC
1BF2
1BF8
1BFE
1C04
1C0A
1C0F
1C15
1C1A
1C1F
1C24
1C2B
1C30
1C36
1C3A
1C3F
1C43
1C48
1C4C
1C52
1C57
1C5D
1C62
1C68
1C6D
1C72
1C77
1C7E
1C83
1C89
1C8D
1C92
1C96
1C9A
1C9E
1CA3
1CA8
1CAE
1CB3
1CB9
1CBE
1CC4
1CC9
1CD0
1CD5
1CDB
1CE0
1CE6
1CEB
1CF1
1CF6
1CFB
1D00
1D06
1D0A
1D12
1D16
1D1A
1D1E
1D27
1D2C
1D32
1D36
1D3C

29/12/2559 12:32
5852410941CAF
4F52410942CB0
4F52410943CB1
4F52410944CB2
4F52410945CB3
4F52410948CB4
4F5241094CCB5
4F5241094DCB6
4F52410941CB7
434D500942CB8
434D500943CB9
434D500944CBA
434D500945CBB
434D500948CBC
434D50094CCBD
434D50094DCBE
434D500941CBF
524E5A0900CC0
504F500942CC1
4A4E5A0900CC2
4A4D500900CC3
434E5A0900CC4
5055534809CC5
4144490900CC6
5253540930CC7
525A0900 CC8
5245540900CC9
4A5A0900 CCA
4446420900CCB
435A0900 CCC
43414C4C09CCD
4143490900CCE
5253540931CCF
524E430900CD0
504F500944CD1
4A4E430900CD2
4F55540900CD3
434E430900CD4
5055534809CD5
5355490900CD6
5253540932CD7
52430900 CD8
4446420900CD9
4A430900 CDA
494E0900 CDB
43430900 CDC
4446420900CDD
5342490900CDE
5253540933CDF
52504F0900CE0
504F500948CE1
4A504F0900CE2
5854484C09CE3
43504F0900CE4
5055534809CE5
414E490900CE6
5253540934CE7
5250450900CE8
5043484C09CE9
4A50450900CEA
5843484709CEB
4350450900CEC
4446420900CED
5852490900CEE
5253540935CEF
52500900 CF0
504F500950CF1
4A500900 CF2
44490900 CF3
43500900 CF4
5055534809CF5
4F52490900CF6
5253540936CF7
524D0900 CF8
5350484C09CF9
4A4D0900 CFA

DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB
DFB

"XRA",TAB,"A",RS
"ORA",TAB,"B",RS
"ORA",TAB,"C",RS
"ORA",TAB,"D",RS
"ORA",TAB,"E",RS
"ORA",TAB,"H",RS
"ORA",TAB,"L",RS
"ORA",TAB,"M",RS
"ORA",TAB,"A",RS
"CMP",TAB,"B",RS
"CMP",TAB,"C",RS
"CMP",TAB,"D",RS
"CMP",TAB,"E",RS
"CMP",TAB,"H",RS
"CMP",TAB,"L",RS
"CMP",TAB,"M",RS
"CMP",TAB,"A",RS
"RNZ",TAB,RS
"POP",TAB,"B",RS
"JNZ",TAB,RS
"JMP",TAB,RS
"CNZ",TAB,RS
"PUSH",TAB,"B",RS
"ADI",TAB,RS
"RST",TAB,"0",RS
"RZ",TAB,RS
"RET",TAB,RS
"JZ",TAB,RS
"DFB",TAB,RS
"CZ",TAB,RS
"CALL",TAB,RS
"ACI",TAB,RS
"RST",TAB,"1",RS
"RNC",TAB,RS
"POP",TAB,"D",RS
"JNC",TAB,RS
"OUT",TAB,RS
"CNC",TAB,RS
"PUSH",TAB,"D",RS
"SUI",TAB,RS
"RST",TAB,"2",RS
"RC",TAB,RS
"DFB",TAB,RS
"JC",TAB,RS
"IN",TAB,RS
"CC",TAB,RS
"DFB",TAB,RS
"SBI",TAB,RS
"RST",TAB,"3",RS
"RPO",TAB,RS
"POP",TAB,"H",RS
"JPO",TAB,RS
"XTHL",TAB,RS
"CPO",TAB,RS
"PUSH",TAB,"H",RS
"ANI",TAB,RS
"RST",TAB,"4",RS
"RPE",TAB,RS
"PCHL",TAB,RS
"JPE",TAB,RS
"XCHG",TAB,RS
"CPE",TAB,RS
"DFB",TAB,RS
"XRI",TAB,RS
"RST",TAB,"5",RS
"RP",TAB,RS
"POP",TAB,"PSW",RS
"JP",TAB,RS
"DI",TAB,RS
"CP",TAB,RS
"PUSH",TAB,"PSW",RS
"ORI",TAB,RS
"RST",TAB,"6",RS
"RM",TAB,RS
"SPHL",TAB,RS
"JM",TAB,RS
Page 57 of 64

;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;

AF
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BA
BB
BC
BD
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
; CB
; CC
; CD
; CE
; CF
; D0
; D1
; D2
; D3
; D4
; D5
; D6
; D7
; D8
; D9
; DA
; DFB
; DC
; DD
; DE
; DF
; E0
; E1
; E2
; E3
; E4
; E5
; E6
; E7
; E8
; E9
; EA
; EB
; EC
; ED
; EE
; EF
; F0
; F1
; F2
; F3
; F4
; F5
; F6
; F7
; F8
; F9
; FA

B8085.LST
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408

1D40
1D44
1D48
1D4D
1D52

29/12/2559 12:32
45490900 CFB
434D0900 CFC
4446420900CFD
4350490900CFE
5253540937CFF

DFB
DFB
DFB
DFB
DFB

1D58 0D0A0A4D54prompt1:
1D8E 3F065B4F66convert

"EI",TAB,RS
"CM",TAB,RS
"DFB",TAB,RS
"CPI",TAB,RS
"RST",TAB,"7",RS,

; FB
; FC
; FD
; FE
; FF

dfb cr,lf,lf,"MTK-85 8085 MICROPROCESSOR TRAINING KIT (? HELP
dfb 3fh,06h,5bh,4fh,66h,6dh,7dh,07h,7fh,6fh,77h,7ch,39h,5eh,79h,

1D9E 0000000000off_display: dfb 0,0,0,0,0,0
; lcd message
|--- 20 letters ---|
1DA4 4D544B2D38prompt2:
dfb "MTK-85 8085 MICROPRO",0
1DB9 434553534Ftext3:
dfb "CESSOR TRAINING KIT",0
1DCD
1DE4
1DE6
1DF6
1E0E
1E39

6C6F616420download_text: dfb "load Intel hex file...",0
3E00
prompt_text: dfb ">",0
6E6577206Cnew_text:
dfb "new location = ",0
6564697420edit_text:
dfb "edit memory location = ",0
0D0A456E74edit_text1:
dfb cr,lf,"Enter to quit, SPACE key to view content",0
0D0A0A4144edit_text2:
dfb cr,lf,lf,"ADDR DATA",0

1E47 6A756D7020jump_text1:
1E59 5D203D2000jump_text2:
1E5E 7072696E74ascii_text:

dfb "jump to address [",0
dfb "] = ",0
dfb "print ASCII code",0

1E6F 426567696Efill_text1:
1E80 20456E6420fill_text2:
1E90 2044617461fill_text3:

dfb "Begin address = ",0
dfb " End address = ",0
dfb " Data = ",0

1E99 206572726Ferror_text:

dfb " errors",0

1EA1 6469736173disassemble_text: dfb "disassemble...",0
0000 =
1EB0
1EB4
1EB8
1EBC
1EC0
1EC4

eos

41463D00 af_text:
42433D00 bc_text:
44453D00 de_text:
484C3D00 hl_text:
53503D00 sp_text:
544F533D00tos_text:

equ 0
dfb
dfb
dfb
dfb
dfb
dfb

"AF=",eos
"BC=",eos
"DE=",eos
"HL=",eos
"SP=",eos
"TOS=",eos

1EC9 50433D00 pc_text: dfb "PC=",eos
1ECD 5B53205A20flag_text: dfb "[S Z - AC
1EE3 533D00

- P - CY]=",eos

sign_text: dfb "S=",0

1EE6 2062797465byte_text: dfb " bytes loaded",0
1EF4 535441434Bstack_text: dfb "STACK Memory Contents..",0
1F0C 7365742076set_register_text: dfb "set value to user register (enter A for AF) ? ",0
1F3B
1F6E
1F7E
1F99
1FAA
1FBB
1FCE
1FDC
1FF1
200B
2023
203C
2055
206F
2088
20A3
20C3

0D0A0A4D54help_text:
0D0A41202Dhelp_text1:
0D0A43202D
0D0A44202D
0D0A45202D
0D0A46202D
0D0A48202D
0D0A49202D
0D0A4A202D
0D0A4B202D
0D0A4C202D
0D0A4D202D
0D0A4E202D
0D0A51202D
0D0A52202D
0D0A53202D
0D0A57202D

dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb

cr,lf,lf,"MTK-85 8085 MICROPROCESSOR TRAINING KIT (? HELP
cr,lf,
"A - ASCII code"
cr,lf,
"C - clear watch variables"
cr,lf,
"D - disassemble"
cr,lf,
"E - edit memory"
cr,lf,
"F - fill constant"
cr,lf,
"H - hex dump"
cr,lf,
"I - i/o address map"
cr,lf,
"J - jump to user program"
cr,lf,
"K - display user STACK"
cr,lf,
"L - load Intel hex file"
cr,lf,
"M - monitor call number"
cr,lf,
"N - new location pointer"
cr,lf,
"Q - quick home location"
cr,lf,
"R - user register display"
cr,lf,
"S - set value to user register"
cr,lf,
"W - watch variables"
Page 58 of 64

B8085.LST
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484

29/12/2559 12:32

20D8 0D0A535041
20F1 0D0A3F202D

dfb cr,lf,
dfb cr,lf,

2103
2132
214C
214E
2195
2197
21D7
2203
2205
224A
224C

dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb

0D0A303048io_text
0D0A202020
0D0A
0D0A313048
0D0A
0D0A323048
0D0A202020
0D0A
0D0A333048
0D0A
0D0A343048

226C
226C
2291
22AD
22B9
22BB
22C6
22D2
22E2
22ED
22F7
2302
2310
231F
232F
233F
234D
235F
2370
237D

"SPACE BAR - single step"
"? - help menu",cr,lf,0

cr,lf,"00H-0FH
cr,lf,"
cr,lf
cr,lf,"10H-13H
cr,lf
cr,lf,"20H-23H
cr,lf,"
cr,lf
cr,lf,"30H-33H
cr,lf
cr,lf,"40H-47H

onboard 4-bit GPIO, D0-D3=output port"
D4-D7=input port"
8255 system PPI, 10H=PORTA, 11H=PORTB, 12H
8254 programmable counter, 20H=counter0, 21
22H=counter2, 23H control register"
8255 user PPI, 30H=PORTA, 31H=PORTB, 32H=PORTC
C16550 UART registers",0

monitor_text:
7365652069
0D0A31456E
0D0A434620
0D0A
0D0A303020
0D0A303120
0D0A303220
0D0A303320
0D0A303420
0D0A303520
0D0A303620
0D0A303720
0D0A303820
0D0A303920
0D0A304120
0D0A304220
0D0A304320
0D0A304420
0D0A304520

dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb
dfb

;
F000

"see input parameters in user manual",cr,lf
cr,lf,"1Enn MVI E,function_number"
cr,lf,"CF
RST 1"
cr,lf
cr,lf,"00 - demo" ; #0 running LED with HL pointer
cr,lf,"01 - delay" ; #1 simple delay routine
cr,lf,"02 - cold_boot" ; #2 show 8085 running
cr,lf,"03 - scan"
; #3 scan display one cycle
cr,lf,"04 - cin"
; #4 get byte from console
cr,lf,"05 - cout"
; #5 print byte to console
cr,lf,"06 - put_str" ; #6 print string with 0 terminator
cr,lf,"07 - init_lcd" ; #7 initialize lcd
cr,lf,"08 - lcd_ready" ; #8 wait until lcd is ready
cr,lf,"09 - clear_lcd" ; #9 clear lcd display
cr,lf,"0A - goto_xy"
; #10 set lcd cursor position
cr,lf,"0B - put_str_lcd" ; #11 print ASCII string on lcd
cr,lf,"0C - put_ch_lcd" ; #12 print ASCII letter on lcd
cr,lf,"0D - demo2",0 ; #13 run GPIO LED
cr,lf,"0E - pint16u",0 ;#14 print 16-bit unsigned

data segment
org system_ram

F000
F010
F020
F021
F022
F023

watch_ram dfs 16
buffer
dfs 16
bcs
dfs 1
key
dfs 1
command dfs 1
flag1
dfs 1

F024

beep_flag dfs 1

;
;
;
;
;
;
;
;
;

F025

uart_found dfs 1

; 0 = no uart, 1 uart found

F026

entry_mode dfs 1

F027
F028
F029

counter1
counter2
warm_code

;
;
;
;
;
;

0 for data mode
1 for address mode
2 register display
event counter1 for data entry
event counter2 for address entry
warm boot code

F02A
F02C
F02E
F030
F032
F034
F036
F038

user_PC dfs 2
user_AF dfs 2
user_BC dfs 2
user_DE dfs 2
user_HL dfs 2
user_SP dfs 2
tos
dfs 2
current_register dfs 2

;
;
;
;
;
;
;
;

user PC
user AF
user BC
user DE
user HL
user SP
Top of STACK
stores current displayed register

F03A

temp

dfs 2

; temporary 16-bit storage

F03C

pointer

dfs 2

; for hex dump

dfs 1
dfs 1
dfs 1

watch variable F000-F00F
buffer display
byte checksum
key position
serial command
user flag
flag1.0 Space key was pressed
flag1.1 Enter key was pressed
beep/no beep

Page 59 of 64

B8085.LST
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501
4501

29/12/2559 12:32

F03E
F040

break_address dfs 2
break_opcode dfs 1

; break address
; opcode that saved

F041
F044

bcd_counter1
bcd_counter2

dfs 3
dfs 3

; 6-digit BCD counter1
; 6-digit BCD counter2

F047

line_buffer

dfs 16

; reserved for terminal printing

F057
F059
F079

save_stack
system_stack
user_stack

dfs 2
dfs 32
dfs 32

; for saving system stack

0000

END

Page 60 of 64

B8085.LST
4501
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575

1075
1266
0D8A
F044
096F
019B
01B0
F03E
0080
1EE6
176C
177F
1791
17A2
17B5
17C8
17D2
17E5
17F8
1808
181A
171E
1839
184B
185D
186E
1881
188D
18A5
18BD
18D5
18ED
1905
1915
192D
1945
195D
1975
1730
199D
19B5
19CD
19E5
19FD
1A0D
1A25
1A3D
1A52
1A6A
1A82
1A90
1AA2
1AB4
1AC6
1AD8
1741
1AF6
1B08
1B1A
1B2C
1B3E
1B4A
1B5C
1B6E
1B80
1B92
1BA4
1BB0
1BC2
1BD4
1BE6
1BF8
1754
1C15
1C24

29/12/2559 12:32
AC_TEXT
ALT_PUT_STR
ASCII_PRINT1
BCD_COUNTER2
BEEP_CHK
BIN1
BIN3
BREAK_ADDRESS
BUSY
BYTE_TEXT
C10
C13
C16
C19
C1C
C1F
C21
C24
C27
C2A
C2D
C3
C32
C35
C38
C3B
C3E
C40
C43
C46
C49
C4C
C4F
C51
C54
C57
C5A
C5D
C6
C62
C65
C68
C6B
C6E
C70
C73
C76
C79
C7C
C7F
C81
C84
C87
C8A
C8D
C9
C92
C95
C98
C9B
C9E
CA0
CA3
CA6
CA9
CAC
CAF
CB1
CB4
CB7
CBA
CBD
CC
CC2
CC5

0A01
13C7
1E5E
F020
F024
01A6
01BB
F040
0631
170B
1771
1785
1798
17A8
17BB
1717
17D9
17EB
17FD
180E
1820
182C
183E
1851
1862
1875
1888
1895
18AD
18C5
18DD
18F5
172A
191D
1935
194D
1965
197D
198D
19A5
19BD
19D5
19ED
1A05
1A15
1A2D
1A42
1A5A
1A72
173C
1A96
1AA8
1ABA
1ACC
1ADE
1AEA
1AFC
1B0E
1B20
1B32
1B44
1B50
1B62
1B74
1B86
1B98
174E
1BB6
1BC8
1BDA
1BEC
1BFE
1C0A
1C1A
1C2B

ADDRESS_MODE
ASCII_0_9
ASCII_TEXT
BCS
BEEP_FLAG
BIN2
BIN4
BREAK_OPCODE
BUZZER
C0
C11
C14
C17
C1A
C1D
C2
C22
C25
C28
C2B
C2E
C30
C33
C36
C39
C3C
C3F
C41
C44
C47
C4A
C4D
C5
C52
C55
C58
C5B
C5E
C60
C63
C66
C69
C6C
C6F
C71
C74
C77
C7A
C7D
C8
C82
C85
C88
C8B
C8E
C90
C93
C96
C99
C9C
C9F
CA1
CA4
CA7
CAA
CAD
CB
CB2
CB5
CB8
CBB
CBE
CC0
CC3
CC6
Page 61 of 64

1EB0
0D72
F041
1EB4
0640
0199
08CA
F010
0642
1710
1778
178B
179D
17AF
17C1
17CD
17DF
17F1
1802
1814
1827
1831
1845
1858
1869
187B
1724
189D
18B5
18CD
18E5
18FD
190D
1925
193D
1955
196D
1985
1995
19AD
19C5
19DD
19F5
1737
1A1D
1A35
1A4A
1A62
1A7A
1A8A
1A9C
1AAE
1AC0
1AD2
1AE4
1AF0
1B02
1B14
1B26
1B38
1747
1B56
1B68
1B7A
1B8C
1B9E
1BAA
1BBC
1BCE
1BE0
1BF2
1C04
1C0F
1C1F
1C30

AF_TEXT
ASCII_PRINT
BCD_COUNTER1
BC_TEXT
BEEP_ON
BIN2ASCII
BREAK
BUFFER
BUZZER1
C1
C12
C15
C18
C1B
C1E
C20
C23
C26
C29
C2C
C2F
C31
C34
C37
C3A
C3D
C4
C42
C45
C48
C4B
C4E
C50
C53
C56
C59
C5C
C5F
C61
C64
C67
C6A
C6D
C7
C72
C75
C78
C7B
C7E
C80
C83
C86
C89
C8C
C8F
C91
C94
C97
C9A
C9D
CA
CA2
CA5
CA8
CAB
CAE
CB0
CB3
CB6
CB9
CBC
CBF
CC1
CC4
CC7

B8085.LST
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651

1C36
1C43
1C52
1C5D
1C6D
1C7E
1C8D
1C9A
1CA8
1CB3
1CC4
1CD5
1CE6
1CF6
1767
1D12
1D1E
1D32
1D40
1D4D
0EE3
0904
0BB3
0C0B
0C23
0C3B
0C4B
0C63
0C7B
0BD3
0BEB
0B7B
F022
0023
0020
F028
1230
107C
061C
0A0E
0051
0995
063B
094A
0BA2
0390
033A
0660
1359
0415
03DC
1DF6
0709
066F
1E99
0DA3
0339
119A
13FA
11ED
11C6
1071
0F0B
10B2
1E90
1229
05AE
05D0
05F1
13D2
1385
0426
022A
024F
11EE
12F1

29/12/2559 12:32
CC8
CCB
CCE
CD0
CD3
CD6
CD9
CDC
CDF
CE1
CE4
CE7
CEA
CED
CF
CF2
CF5
CF8
CFB
CFE
CLEAR1
CLEAR_BREAK
CODE1
CODE12
CODE15
CODE18
CODE20
CODE23
CODE26
CODE5
CODE8
COLD2
COMMAND
CONTROL_8254
COUNTER0_8254
COUNTER2
COUT1
CY_TEXT
DATA_KEY2
DATA_MODE
DATA_WRITE
DEBUG
DELAY_NOBEEP
DELETE_BYTE
DEMO1_2
DISASSEM1
DISASSEMBLE
DISPLAY_OFF
DUMP1
D_DISASSEM2
D_ONE_TAB
EDIT_TEXT
ENTER_ADDRESS
ENTER_REGISTER
ERROR_TEXT
EXIT_ASCII_PRINT
EXIT_DISASSEMBLE
EXIT_EDIT1
EXIT_GET_HEX3
EXIT_IO
EXIT_NEW_LOCATION
EXIT_REGISTER
EXIT_STEP
FILL_MEMORY1
FILL_TEXT3
FOUND
FUNCTION3
FUNCTION6
FUNCTION9
GET_2ND_HEX
GET_HEX1
GET_NUMBER_OF_BYTE
GOTO_XY
GOTO_XY3
HELP
HEX_DUMP

1C3A
1C48
1C57
1C62
1C72
1C83
1C92
1C9E
1760
1CB9
1CC9
1CDB
1CEB
1CFB
1D06
1D16
1D27
1D36
1D44
1D52
14D5
0200
0BFB
0C13
0C2B
0C43
0C53
0C6B
0BC3
0BDB
0BF3
0B8C
0052
0034
F027
0022
000D
0609
0624
0053
0CA7
0A78
0659
0959
1EB8
039F
0313
0D50
1351
03C4
114C
1E0E
06CF
F026
001B
0207
0D71
10C3
1205
1126
0D4F
0EB8
0EFF
1E6F
F023
0598
05B9
05DB
0A19
1245
139E
1403
0239
025A
1F3B
1312

CC9
CCC
CCF
CD1
CD4
CD7
CDA
CDD
CE
CE2
CE5
CE8
CEB
CEE
CF0
CF3
CF6
CF9
CFC
CFF
CLEAR_BCD1
CLEAR_LCD
CODE10
CODE13
CODE16
CODE19
CODE21
CODE24
CODE3
CODE6
CODE9
COLD3
COMMAND_READ
CONTROL_WORD_8254
COUNTER1
COUNTER2_8254
CR
DATA_KEY
DATA_KEY3
DATA_READ
DEBOUNCE
DECREMENT
DELAY_US
DELETE_BYTE1
DE_TEXT
DISASSEM2
DISASSEMBLE1
DOWNLOAD
DUMP_MEMORY
D_DISASSEM3
EDIT1
EDIT_TEXT1
ENTER_DATA
ENTRY_MODE
ESC
EXIT_CLEAR
EXIT_DOWNLOAD
EXIT_FILL
EXIT_HELP
EXIT_JUMP
EXIT_PROMPTING
EXIT_SET_USER
EXIT_WATCH
FILL_TEXT1
FLAG1
FUNCTION1
FUNCTION4
FUNCTION7
FUNCTION_2ND
GET_COMMAND
GET_HEX2
GET_RECORD
GOTO_XY1
GOTO_XY4
HELP_TEXT
HEX_DUMP1
Page 62 of 64

1C3F
1C4C
175A
1C68
1C77
1C89
1C96
1CA3
1CAE
1CBE
1CD0
1CE0
1CF1
1D00
1D0A
1D1A
1D2C
1D3C
1D48
123B
14FE
0ED6
0C03
0C1B
0C33
0BBB
0C5B
0C73
0BCB
0BE3
0B7D
0B76
0050
1D8E
0021
122F
F038
0614
062C
145B
0CA9
0600
065B
0BA0
0326
034E
1EA1
1DCD
0406
03B0
1127
1E39
06F4
0000
145A
0EF0
11A9
13F1
1350
10DC
11DB
0F4B
1080
1E80
1ECD
05A3
05C5
05E6
058D
1372
0BAB
099B
0244
0000
1F6E
12FE

CCA
CCD
CD
CD2
CD5
CD8
CDB
CDE
CE0
CE3
CE6
CE9
CEC
CEF
CF1
CF4
CF7
CFA
CFD
CIN
CLEAR_BCD2
CLEAR_WATCH
CODE11
CODE14
CODE17
CODE2
CODE22
CODE25
CODE4
CODE7
COLD1
COLD_BOOT
COMMAND_WRITE
CONVERT
COUNTER1_8254
COUT
CURRENT_REGISTER
DATA_KEY1
DATA_KEY4
DATA_RECORD
DEBOUNCE1
DELAY
DELAY_US1
DEMO
DIS2
DISASSEM3
DISASSEMBLE_TEXT
DOWNLOAD_TEXT
D_DISASSEM1
D_DISASSEMBLE
EDIT_LOCATION
EDIT_TEXT2
ENTER_DATA1
EOS
ESC_QUIT
EXIT_CLEAR_WATCH
EXIT_EDIT
EXIT_GET_HEX2
EXIT_HEX_DUMP
EXIT_MONITOR
EXIT_QUICK_HOME
EXIT_STACK
FILL_MEMORY
FILL_TEXT2
FLAG_TEXT
FUNCTION2
FUNCTION5
FUNCTION8
FUNCTION_KEY
GET_HEX
GET_KEY_CODE
GO
GOTO_XY2
GPIO
HELP_TEXT1
HEX_DUMP2

B8085.LST
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727

1338
1EBC
0A65
018F
091F
11DC
1E47
F021
01F7
0186
0B74
0261
8000
1DE6
042E
0486
049E
04B6
04C6
04DE
04F6
050E
051E
0536
054E
0446
0576
0456
046E
13E9
12BA
1EC9
01C9
14E2
1D58
0D32
07ED
1258
021A
11C7
0761
0799
07F8
087C
0F57
0FEE
1027
104B
0000
0CBC
0C8F
0743
12B3
02B8
1F0C
0E36
0EB7
06E2
1EE3
030E
0164
147D
0878
0020
0F0C
0100
0012
F059
062D
1DB9
1EC4
0040
0042
0045
F02E
F02A

29/12/2559 12:32
HEX_DUMP3
HL_TEXT
INCREMENT
INIT_8254
INSERT_BYTE
IO_ADDRESS
JUMP_TEXT1
KEY
LCD_READY1
MAIN
MODE2
MONITOR_CALL
MY_ROM
NEW_TEXT
NUMBER1
NUMBER12
NUMBER15
NUMBER18
NUMBER20
NUMBER23
NUMBER26
NUMBER29
NUMBER31
NUMBER34
NUMBER37
NUMBER4
NUMBER42
NUMBER6
NUMBER9
OK_0_9
OUT1X
PC_TEXT
PINT8U
PRINT_BCD2
PROMPT1
PROMPTING
PUT_FLAG
PUT_STR
PUT_STR_LCD
QUICK_HOME
REGISTER1
REGISTER3
REGISTER6
REGISTER9
REGISTER_DISPLAY2
REGISTER_FLAG2
REGISTER_FLAG5
REGISTER_FLAG8
RS
SCAN1
SCAN_KEY2
SELECT_REGISTER
SEND_PROMPT3
SERVICE_RST2
SET_REGISTER_TEXT
SET_USER3
SET_USER6
SHIFT_DATA
SIGN_TEXT
SKIP1
SKIP_COLD_BOOT
SKIP_ERROR
SKIP_PUT_HIGH2
SP
STACK_DISPLAY
START
SYSTEM_PORT_C
SYSTEM_STACK
TEST_BUZZER
TEXT3
TOS_TEXT
UART_BUFFER
UART_FIFO
UART_LINE_STATUS
USER_BC
USER_PC

133A
0981
1489
0208
0932
2103
1E59
0581
000A
170B
0B02
10C4
12DA
0CDB
0476
048E
04A6
04BE
04CE
04E6
04FE
043E
0526
053E
0556
0566
057E
045E
1D9E
0366
12C6
01E4
F03C
0EF1
1DA4
1DE4
07F5
125F
0221
0ABE
08A4
07B5
0820
0F4C
0FE9
1008
102C
1065
F057
0C7E
0C8F
0D3A
12EB
0293
0DE0
0E61
0DA4
0CD1
09BF
09DF
118A
1117
017B
12E5
0F20
0010
0013
0009
05F2
0B94
1366
0040
F025
0047
F030
0030

HEX_DUMP4
132D HEX_DUMP5
HOME
8100 HOME_ADDRESS
INC_BCD1
14A1 INC_BCD2
INIT_LCD
1206 INIT_UART
INSERT_BYTE1
150B INS_TABLE
IO_TEXT
0705 IT_IS_RAM
JUMP_TEXT2
10DD JUMP_TO_USER_PGM
KEY_EXECUTE
01F6 LCD_READY
LF
F047 LINE_BUFFER
MNEM
0B3D MODE1
MODE_INDICATOR
0A3D MODIFY_REGISTER
MONITOR_FUNCTION
226C MONITOR_TEXT
NEW_LINE
11AA NEW_LOCATION
NEXT_KEY
1252 NO_DATA
NUMBER10
047E NUMBER11
NUMBER13
0496 NUMBER14
NUMBER16
04AE NUMBER17
NUMBER19
0436 NUMBER2
NUMBER21
04D6 NUMBER22
NUMBER24
04EE NUMBER25
NUMBER27
0506 NUMBER28
NUMBER3
0516 NUMBER30
NUMBER32
052E NUMBER33
NUMBER35
0546 NUMBER36
NUMBER38
055E NUMBER39
NUMBER40
056E NUMBER41
NUMBER43
044E NUMBER5
NUMBER7
0466 NUMBER8
OFF_DISPLAY
0663 OFF_DISPLAY1
ONE_TAB
097D OPTION1
OUT1X1
12CB OUT2X
PINT1
01EF PINT2
POINTER
14B9 PRINT_BCD1
PRINT_WATCH
0EB9 PRINT_WATCH_RAM
PROMPT2
126F PROMPT3
PROMPT_TEXT
025B PUT_CH_LCD
PUT_HIGH1
0876 PUT_HIGH2
PUT_STR1
12A5 PUT_STR2
PUT_STR_LCD1
1079 P_TEXT
READ_MEMORY
0A93 READ_REGISTER
REGISTER10
077D REGISTER2
REGISTER4
07D1 REGISTER5
REGISTER7
084B REGISTER8
REGISTER_DISPLAY
0F54 REGISTER_DISPLAY1
REGISTER_FLAG1
106A REGISTER_FLAG10
REGISTER_FLAG3
100D REGISTER_FLAG4
REGISTER_FLAG6
1046 REGISTER_FLAG7
REGISTER_FLAG9
0000 ROM
SAVE_STACK
0CAE SCAN
SCAN_KEY
0C95 SCAN_KEY1
SCAN_KEY3
0C7E SCAN_KEY4
SEND_PROMPT
12AC SEND_PROMPT1
SEND_TAB
0CED SERIAL_COMMAND
SERVICE_RST7
02DD SERVICE_TRAP
SET_USER1
0E0B SET_USER2
SET_USER4
0E8C SET_USER5
SET_USER_REGISTER 071F SHIFT_ADDRESS
SHIFT_KEY
067A SHIFT_REGISTER
SINGLE_STEP
0F00 SINGLE_STEP_
SKIP2
0141 SKIP_BOOT
SKIP_EDIT1
1193 SKIP_EDIT2
SKIP_LOAD_PC
07F7 SKIP_PUT_HIGH1
SKIP_SEND_PROMPT
0D31 SKIP_SERIAL
SPACE
1EC0 SP_TEXT
STACK_DISPLAY1
1EF4 STACK_TEXT
SYSTEM_PORT_A
0011 SYSTEM_PORT_B
SYSTEM_PORT_CONTROL F000 SYSTEM_RAM
TAB
F03A TEMP
TEST_LED
05F4 TEST_LED1
TITLE
F036 TOS
TO_HEX
0A88 TO_SEVEN_SEGMENT
UART_DIVISOR_LSB
0041 UART_DIVISOR_MSB
UART_FOUND
0043 UART_LCR
UART_SCR
F02C USER_AF
USER_DE
F032 USER_HL
USER_PORT_A
0031 USER_PORT_B
Page 63 of 64

B8085.LST
4728
4729
4730
4731
4732
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733
4733

0032
F079
1436
F000

29/12/2559 12:32
USER_PORT_C
USER_STACK
WAIT_CR
WATCH_RAM

0033
0275
F029
1371

USER_PORT_CONTROL
VECTOR_TABLE
WARM_CODE
ZERO_NINE

Page 64 of 64

F034
0CC6
0EC9
1072

USER_SP
WAIT1
WATCH1
ZERO_TEXT



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : Yes
Producer                        : doPDF Ver 7.3 Build 394 (Windows XP Professional Edition  (SP 3) - Version: 5.1.2600 (x86))
Create Date                     : 2017:01:22 16:50:00+07:00
Modify Date                     : 2017:01:22 16:53:59+07:00
Page Count                      : 117
Page Layout                     : OneColumn
Page Mode                       : UseNone

EXIF Metadata provided by EXIF.tools