Ibm Pc 300Gl Users Manual

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IBM
Technical Information Manual
PC 300GL Types 6563, 6564, 6574
PC 300PL Type 6565

IBM
Technical Information Manual
PC 300GL Types 6563, 6564, 6574
PC 300PL Type 6565

Note:
Before using this information and the product it supports, be sure to read the general infromation
under “Appendix E. Notices and Trademarks,” on page 57.

Technical Information Manual IBM PC 300GL Types 6563, 6564, 6574 and PC300PL Type 6565
Second Edition (March 2000)
© COPYRIGHT INTERNATIONAL BUSINESS MACHINES CORPORATION, 2000. All rights reserved.
Note to U.S. Government Users — Documentation related to restricted rights — Use, duplication or disclosure is subject
to restrictions set forth in GSA ADP Schedule Contract with IBM Corp.

Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

Chapter 1.System Overview . . . . . . . . . . . . 1
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CD-RW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DVD-ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADSL modems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wake on LAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wake on Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1
2
2
3
3
3

Chapter 2.System board features . . . . . . . 5
Intel Pentium III microprocessor with MMX technology 5
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
L2 Cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chip set control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PCI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
IDE bus master interface . . . . . . . . . . . . . . . . . . . . . . . . 7
USB interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Video Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Audio Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Integrated peripheral controller . . . . . . . . . . . . . . . . . . . 11
Diskette Drive Interface . . . . . . . . . . . . . . . . . . . . . . . 11
Serial ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Parallel port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Keyboard and mouse ports . . . . . . . . . . . . . . . . . . . . 12
Network connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Real-time clock and CMOS . . . . . . . . . . . . . . . . . . . . . . . 13
Flash EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Expansion adapters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Physical layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Rocker switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cable connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connector panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Plug and Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration/Setup Utility program . . . . . . . . . . . . . .
Advanced Power Management (APM) . . . . . . . . . . . . .
Advanced Configuration and Power Interface (ACPI)
Flash update utility program . . . . . . . . . . . . . . . . . . . . . .
Diagnostic program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29
29
30
30
30
30
30

Chapter 6.System compatibility . . . . . . . . 31
Hardware compatibility . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware interrupts . . . . . . . . . . . . . . . . . . . . . . . . . .
Software compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . .
Machine-sensitive programs. . . . . . . . . . . . . . . . . . . .

31
31
32
32
32

Appendix A. Connector pin assignments 33
SVGA monitor connector . . . . . . . . . . . . . . . . . . . . . . . . .
DVI-I monitor connector . . . . . . . . . . . . . . . . . . . . . . . . .
System memory connector . . . . . . . . . . . . . . . . . . . . . . . .
PCI connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IDE connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diskette drive connector. . . . . . . . . . . . . . . . . . . . . . . . . .
Power supply connector . . . . . . . . . . . . . . . . . . . . . . . . . .
Wake on LAN connectors. . . . . . . . . . . . . . . . . . . . . . . . .
USB port connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mouse and keyboard port connectors . . . . . . . . . . . . . .
Serial port connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parallel port connector . . . . . . . . . . . . . . . . . . . . . . . . . . .

33
34
34
40
42
43
44
44
44
45
45
46

Appendix B. System address maps. . . . . 47
System memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input/output address map . . . . . . . . . . . . . . . . . . . . . . .
DMA I/O address map. . . . . . . . . . . . . . . . . . . . . . . . . . .
PCI configuration space map. . . . . . . . . . . . . . . . . . . . . .

47
48
50
51

Chapter 3.Physical specifications . . . . . . 21

Appendix C. IRQ and DMA channel
assignments. . . . . . . . . . . . . . . . . . . . . . . 53

PC 300 GL and PL desktop . . . . . . . . . . . . . . . . . . . . . . . 21
PC300 PL and GL tower . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Appendix D. Error codes . . . . . . . . . . . . . 55

Chapter 4.Power supply . . . . . . . . . . . . . . 25

POST error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Beep codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Power input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector description . . . . . . . . . . . . . . . . . . . . . . . . . . .

25
25
26
27
27

Chapter 5.System software. . . . . . . . . . . . 29
BIOS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

v

Appendix E. Notices and Trademarks . . . 57
Bibliography. . . . . . . . . . . . . . . . . . . . . . . . 59
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

vi

Preface
This Technical Information Manual provides information for the IBM PC 300GL
personal computer types 6563, 6564, 6574 and PC 300PL personal computer type 6565.
The Manual is intended for developers who want to provide hardware and software
products to operate with these IBM computers and provides an in-depth view of how
these IBM computers work. Users of this publication should have an understanding
of computer architecture and programming concepts.

Related publications
In addition to this Manual, the following IBM publications provide information
related to the operation of the IBM PC 300GL and PC 300PL personal computer.
Several publications mentioned in this book are available from the IBM Web site. In
some cases, you will have to follow further instructions on the Web site to find the
document for your particular computer and model. To order printed publications in
the U.S. and Puerto Rico, call 1-800-879-2755. In other countries, contact an IBM
reseller or an IBM marketing representative.
•

PC 300GL and PC 300PL User Guide
This publication contains information about configuring, operating, and
maintaining the PC 300GL and the PC 300PL personal computer, as well as
installing new options in the PC 300GL and PC 300PL personal computer. Also
included are warranty information, instructions for diagnosing and solving
problems, and information on how to obtain help and service.

•

Understanding Your Personal Computer
This online document includes general information about using computers and
detailed information about the features of the PC 300GL and the PC 300PL
personal computer. This publication is available on the World Wide Web at
http://www.ibm.com/pc/support.

•

About Your Software
This publication (provided only with computers that have IBM-preinstalled
software) contains information about the preinstalled software package.

•

Hardware Maintenance Manual
This publication contains information for trained service technicians. It is
available at http://www.ibm.com/pc/support on the World Wide Web, and it
can also be ordered from IBM. To purchase a copy, see the "Getting Help,
Service, and Information" section in the PC 300GL and PC 300PL User Guide.

•

Compatibility Report
This publication contains information about compatible hardware and software
for the PC 300GL and PC 300PL personal computer. It is available at
http://www.ibm.com/pc/us/cdt on the World Wide Web.

•

Network Administrator’s Guide
This publication contains information for network administrators who configure
and service local area networks (LANs). Look for this publication at
http://www.ibm.com/pc/us/cdt on the World Wide Web.

© Copyright IBM Corp. 2000

vii

Terminology
Attention: The term reserved describes certain signals, bits, and registers that should
not be changed. Use of reserved areas can cause compatibility problems, loss of data,
or permanent damage to the hardware. If you change the contents of a register,
preserve the state of the reserved bits. When possible, read the register first and
change only the bits that must be changed.
In this manual, some signals are represented in an all-capital-letter format
(-ACK). A minus sign in front of the signal indicates that the signal is active low. No
sign in front of the signal indicates that the signal is active high.
The term hex indicates a hexidecimal number.
When numerical modifiers such as K, M, and G are used, they typically indicate
powers of 2, not powers of 10. For example, 1 KB equals 1 024 bytes (210), 1 MB equals
1 048 576 bytes (220), and 1 GB, equals 1 073 741 824 bytes (230).
When expressing storage capacity, MB equals 1 000 KB (1 024 000). The value is
determned by counting the number of sectors and assuming thatevery two sectors
equals 1 KB.
Note:

viii

PC 300 GL and 300 PL

Depending on the operating system and other requirements, the storage
capacity available to you might vary.

Chapter 1. System Overview
IBM® PC 300® GL personal computer types 6563, 6564, and 6574 and PC 300PL
personal computer type 6565 are computer systems that provide state-of-the-art
computer power with room for future growth.

Features
Your computer has:
•

An Intel® Pentium® III microprocessor with MMX™ technology, streaming
single instruction multiple date (SMID) extensions, and 512 KB L2 cache

Your computer may have all, or some, of the following major features:
•

Room for up to 1 GB of system memory total

•

Integrated IDE bus master controller, Ultra DMA-66 capable

•

EIDE hard disk drive

•

System management
— Remote Program Load (RPL) and Dynamic Host Configuration Protocol
(DHCP)
— Wake on LAN® support
— Desktop Management Interface (DMI) BIOS and DMI software
— Integrated network protocols
— Enablement for Remote Administration
— Ability to update POST and BIOS over the network
— Wake on Ring support
— Automatic power-on startup
— System Management (SM) BIOS and software
— Ability to store POST hardware test results
— Selectable startup sequence
— Selectable Automatic Power ON Startup Sequence
— CMOS Save/Restore utility program
— CMOS setup over LAN

•

IDE CD-ROM1 drive, standard on some models

•

CD-RW (Rewritable) drive, standard on some models

•

DVD-ROM drive, standard on some models

•

Asynchronous Digital Subscriber Line (ADSL) modem, standard on some
models

•

Asset security
— Security settings provided by the Configuration/Setup Utility program:
– Power-on and administrator password protection
– Startup sequence control
– Hard disk drive and diskette drive access control
– I/O port control
— Cover lock loop (PC 300GL models only)
— Cover key lock (PC 300PL models only)
— U-bolt and security cabling (optional)

1. Variable read rate. Actual playback speed will vary and is often less than the maximum possible.

© Copyright IBM Corp. 2000

1

— Diskette write-protection™
— Alert on LAN
•

Accelerated graphics port (AGP) video adapter with up to 16 MB of
Synchronous Graphics Random Access Memory (SGRAM)

•

Integrated 16-bit audio controller and built-in high-quality speaker (supports
SoundBlaster, Adlib, and Microsoft® Windows® Sound System applications)

•

Networking
— IBM 10/100 megabits-per-second (Mbps) PCI Ethernet adapter with Wake
on LAN in some models
— IBM PCI token-ring adapter with Wake on LAN support (optional)

•

Expansion: four drive bays, three PCI expansion slots

•

PCI I/O bus compatibility

•

EnergyStar compliance (some models only)

•

3.5-inch, 1.44 MB diskette drive

•

Input/Output features
— One 25-pin, ECP/EPP parallel port
— Two 9-pin, 16550 universal asynchronous receiver/transmitter (UART)
serial ports
— Two 4-pin, Universal Serial Bus (USB) ports
— One 6-pin, keyboard port
— One 6-pin, mouse port
— One 15-pin, DDC2B-compliant monitor port or
— One 24-pin, DVI-I port on the AGP adapter (on some models)
— Three 3.5-mm audio jacks (in/headphone out, line in, microphone)

CD-RW
CD-Rewritable (CD-RW) drives, standard on some models, enable the recording and
reuse of CD recordable media. The laser used in CD-RW has variable temperatures to
provide the three functions of CD-RW drives: playing CDs or CD-RWs, erasing
CD-RWs, and recording CD-RWs.
CD-RW drives can read traditional CDs, but many older CD players cannot read
CD-RWs. Their light reflective properties are about one-third that of traditional CDs.
CD-RW drives cannot read DVDs.
To learn more about CD-RW drives, see the Understanding Your Personal Computer
publication for your personal computer model and type number. This publication is
available on the World Wide Web at http://www.ibm.com/pc/support.

DVD-ROM
DVD-ROM drives, standard on some models, differ from CD-ROM and CD-RW
drives as the result of refinements in laser technology.
The recording tracks on DVD media are not as deep and are more condensed than on
CDs or CD-RWs, therefore DVDs provide more storage space. DVD media also use
both sides of the disk, as opposed to just one side for CDs and CD-RWs.
DVD-ROM drives read traditional CDs, CD-RWs, and DVDs.
To learn more about DVD-ROM drives, see the Understanding Your Personal Computer
publication for your personal computer model and type number. This publication is
available on the World Wide Web at http://www.ibm.com/pc/support.

2

PC 300 GL and 300 PL

ADSL modems
ADSL modems, available on some models, enable simultaneous internet connectivity
and telephone service. Contact your local telephone service provider and ask if your
premises need any additional telephony equipment, such as a splitter or a filter. Also
contact your Internet service provider (ISP) to determine if they provide service to
customers with ADSL.
ADSL modems work by using separately the individual four or six wires in the
standard RJ-11 telephone jack. The inner wires, or pairs of wires if there are six, carry
voice transmissions. The outer wires on either side carry data between your
computer and the Internet. One channel is data download; the other is data upload.
To learn more about ADSL modems, see the Understanding Your Personal Computer
publication for your personal computer model and type number. This publication is
available on the World Wide Web at http://www.ibm.com/pc/support.

Wake on LAN
The power supply of the computer supports the Wake on LAN feature. With the
Wake on LAN feature, the computer can be turned on when a specific LAN frame is
passed to the computer over the LAN.
To use the Wake on LAN feature, your computer must be equipped with a network
adapter that supports Wake on LAN.
To find out if the Wake on LAN feature is set, refer to the menu item for Wake on LAN
in the Configuration/Setup Utility program. See the PC 300GL and PC 300PL User
Guide for help with using the Configuration/Setup Utility program.

Wake on Ring
All models can be configured to turn on the computer after a ring is detected from an
external or internal modem. Use the menu for setting the Wake on Ring feature in the
Configuration/Setup Utility Program. Two options control this feature:
•

Serial Ring Detect: Use this option if the computer has an external modem
connected to the serial port.

•

Modem Ring Detect: Use this option if the computer has an internal modem.

Chapter 1. System Overview

3

4

PC 300 GL and 300 PL

Chapter 2. System board features
This section includes information about system board features. For an illustration of
the system board, see “Physical layout” on page 14.

Intel Pentium III microprocessor with MMX technology
PC 300 GL personal computer types 6563, 6564, and 6574 and PC 300 PL personal
computer type 6565 come with an Intel Pentium III microprocessor. The
microprocessor has an attached heat sink which plugs directly into a connector on the
system board.
More information on this microprocessor is available at http://www.intel.com on the
World Wide Web.

Features
The features of the Pentium III microprocessor are as follows:
•
•
•
•
•
•
•
•

Optimization for 32-bit software
Operation at a low voltage level
Intel microprocessor serial number
64-bit microprocessor data bus
100-133 MHz front-side bus (FSB)
Math coprocessor
Internet Streaming SIMD extensions
MMX technology, which boosts the processing of graphic, video, and audio data

L2 Cache
The Pentium III microprocessor provides up to 512 KB L2 cache. The L2 cache error
corrected code (ECC) function is automatically enabled if ECC memory is installed. If
nonparity memory is installed, the L2 cache is non-ECC.

Chip set control
The chip set design is the interface between the microprocessor and the
following:
•
•
•
•
•
•
•
•

Memory subsystem
PCI bus
IDE bus master connection
High performance, PCI-to-ISA bridge
USB ports
SMBus
Enhanced DMA controller
Real-time clock (RTC)

System memory
The maximum amount of system memory the computer can physically accommodate
is 1 GB total. The amount of system memory factory-preinstalled varies by model.

© Copyright IBM Corp. 2000

5

For memory expansion, the system board provides two dual inline memory module
(DIMM) connectors and supports 133 MHz DIMMs in sizes of 64 MB, 125 MB, and 512
MB. 100 MHz DIMMs may be used in systems with a 100 MHz FSB.
The following information applies to system memory:
•

Synchronous dynamic random access memory (SDRAM) is standard.

•

The maximum height of memory modules is 6.35 cm (2.5 in.).

•

Only PC 100 and PC 133 industry-standard, gold-lead DIMMs are supported.

•

DIMM connectors do not support RAMBUS Inline Memory Modules (RIMMs).

•

The PC 300GL supports error-corrected code (ECC). A mix of nonparity types
configures as nonparity.

•

BIOS sepcific auto-configure, auto-detect maximum system memory.

For information on the pin assignments for the memory modules connectors, see
“System memory connector” on page 34.
The following table shows some possible configurations for the supported DIMMs.
Table. 1. Memory Configuration (MB)

6

PC 300 GL and 300 PL

Total Memory

Mem O

Mem 1

64

64

0

96

64

32

128

64

64

128

128

0

160

128

32

192

128

64

256

128

128

384

256

128

512

256

256

512

512

0

578

512

64

640

512

128

1024

512

512

PCI Bus
The PCI bus originates in the chip set. Features of the PCI bus are:
•

Integrated arbiter with multitransaction PCI arbitration acceleration hooks

•

Zero-wait-state, microprocessor-to-PCI write interface for high-performance
graphics

•

Built-in PCI bus arbiter

•

Microprocessor-to-PCI memory write posting

•

Conversion of back-to-back, sequential, microprocessor-to-PCI memory write to
PCI burst write

•

Delayed transaction

•

PCI parity checking and generation support

IDE bus master interface
The system board incorporates a PCI-to-IDE interface that complies with the AT
Attachment Interface with Extensions.
The bus master for the IDE interface is integrated into the I/O hub of the
chip set. The chip set is PCI 2.2 compliant. It connects directly to the PCI bus and is
designed to allow concurrent operations on the PCI bus and IDE bus. The chip set is
capable of supporting PIO mode 0–4 devices and IDE DMA mode 0–3 devices. Ultra
DMA 66 transfers up to 66 Mbps using an ATA 66 cable.
The IDE devices receive their power through a four-position power cable containing
+5 V dc, +12 V dc, and ground voltage. As devices are added to the IDE interface,
designate one device as the master, or primary, device and another as the slave, or
subordinate, device. These designations are determined by switches or jumpers on
each device. There are two IDE ports, one designated Primary and the other
Secondary, allowing for up to four devices to be attached. The total number of
physical IDE devices is determined by available space on the system board.
For the IDE interface, no resource assignments are given in the system memory or the
direct memory access (DMA) channels. For information on the resource assignments,
see “Input/output address map” on page 48 and “Appendix C. IRQ and DMA
channel assignments,” on page 53.
For information on the connector pin assignments, see “IDE connectors” on page 42.

USB interface
Universal Serial Bus (USB) technology is a standard feature of your personal
computer. The system board provides the USB interface with two connectors
integrated into the chip set. A USB-enabled device can attach to a connector and, if
that device is a hub, multiple peripheral devices can attach to the hub and be used by
the system. The USB connectors use Plug and Play technology for installed devices.
The speed of the USB is up to 12 MBps with a maximum of 127 peripheral devices.
The USB is compliant with Universal Host Controller Interface Guide 1.0.
Features of USB technology include:
•

Plug and Play devices

•

Concurrent operation of multiple devices

•

Suitability for different device bandwidths
Chapter 2. System board features

7

•

Support for up to five-meter cable length from host to hub or hub to hub

•

Guaranteed bandwidth and low latencies appropriate for specific devices

•

Wide range of packet sizes

•

Limited power to hubs

For information on the connector pin assignment for the USB interface, see “USB port
connectors” on page 44.

Video Subsystem
The PC 300GL personal computer types 6563, 6564, and 6574 ad PC 300PL personal
computer type 6565 come with one of the following graphic solutions:
1. S3 Savage4 Accelerated Graphics Port (AGP) 4X adapter with 8 MB 125 MHz
SDRAM and a 15-pin VGA connector
2. S3 Savage4 Extreme AGP4X adapter with 16 MB 166 MHz SGRAM, a
DVI-connector, and a 15-pin VGA converter.
The Savage4 graphics accelerator supports the following features:
•

128-bit 2D graphics engine

•

High-performance 2D/3D video accelerator

•

3D rendering

•

Motion video architecture

•

High-speed memory bus

•

Flat-panel monitor support

•

ACPI and PCI power management

•

PCI 2.2 bus support, including bus mastering

•

300 MHz RAMDAC with gamma correction

•

Serial bus and flash ROM support

•

Hardware and BIOS support for VESA timing and DDC monitor
communications

•

2.5 V core with 3.3V/5V tolerant I/O

3. S3 Diamond AGP 4X adapter with 32 MB 143 MHz SDRAM with a DVI-I
connector and, on some models, TV outlet on a daughter card.
The S3 Diamond graphics accelerator supports the following features:

8

PC 300 GL and 300 PL

•

128-bit 3D graphics engine

•

Two texture-mapped, lit pixels-per-clock cycle

•

Single-pass multi-texturing

•

32-bit Z/stencil buffer

•

Anti-aliasing: full scene, order independent

•

Up to 2048 x 1536 resolution

•

30 frames per second (fps) full screen DVD playback

•

National Television Systems Committee (NTSC) digital output (optional)

•

Phase Alternate Line (PAL) digital output (optional)

•

DVI-I interface

•

Bidirectional Media Port and CCIR-656 video capture port (optional)

The integrated video subsystem supports all video graphics array (VGA) modes and
is compliant with super video graphics array (SVGA) modes and Video Electronics
Standards Association (VESA) 1.2. Some enhanced features include:
•

Integrated video subsystem on chip, including 2D, 3D, and video port

•

66 MHz AGP system bus interface with 2X and 4X

•

Sideband signaling (some models only)

•

Command list bus mastering support for fast 2D and 3D performance

•

64-bit, 125 MHz SDRAM or 166 MHz SGRAM interface

•

Plug and Play support

•

4 MB dynamic display cache memory

•

Advanced Power Management (APM) support

•

Color space conversion

•

Hardware scaling

The integrated graphics memory controller subsystem complys with the VESA
Display Data Channel (DDC) 1.1 standard and uses DDC1 and DDC2B to determine
optimal values during automatic minor detection.
The video subsystem has the following resource assignments.
Table 2. Video subsystem resources
Resource Assignment
ROM

Hex C0000-C7FFF (32KB)

RAM

Hex A0000-BFFFF (standard VGA frame buffer)

I/O

VGA, sequencer, CRT controller, graphics controller, attribute, RAMDAC,
extended sequencer, extended CRTC registers

IRQ

PCI interrupt 1 (enabled by default in the Configuration/Setup Utility
program. Normally assigned to IRQ 0B when nothing else is installed in
the system. 3D systems use this interrupt.)

DMA

None, N/A for AGP bus

For further information on resource assignments, see “Appendix B. System address
maps,” on page 47 and “Appendix C. IRQ and DMA channel assignments,” on page
53.

Chapter 2. System board features

9

The PC 300GL personal computer types 6563, 6564, and 6574 and the PC 300PL type
6565 support the following video subsystem modes.
Table 3. Supported VGA video modes
Sweep Refresh
rate
rate
(kHz)
(Hz)

Display
mode

Screen resolution

00

Text

40 x 25 characters

2

B8000

28.322

31.5

70

01

Text

40 x 25 characters

16

B8000

28.322

31.5

70

02

Text

80 x 25 characters

Black/white B8000

28.322

31.5

70

03

Text

80 x 25 characters

16

B8000

28.322

31.5

70

04

Graphics 320 x 200 pixels

4

B8000

25.175

31.5

70

05

Graphics 320 x 200 pixels

4

B8000

25.175

31.5

70

06

Text

640 x 200 pixels

2

B8000

25.175

31.5

70

07

Text

80 x 25 characters

Mono

B8000

28.322

31.5

70

0D

Graphics 320 x 200 pixels

16

A0000

25.175

31.5

70

0E

Graphics 640 x 200 pixels

16

A0000

25.175

31.5

70

0F

Graphics 640 x 350 pixels

Mono

A0000

25.175

31.5

70

10

Graphics 640 x 350 pixels

16

A0000

25.175

31.5

70

11

Graphics 640 x 480 pixels

2

A0000

25.175

31.5

60

12

Graphics 640 x 480 pixels

16

A0000

25.175

31.5

60

13

Graphics 320 x 200 pixels

256

A0000

25.175

31.5

70

Colors

Buffer
start (hex)

Dot
clock
(MHz)

Mode
(Hex)

The video subsystem provides a 15-pin monitor connector on the system board. On
some models, an optional 24-pin DVI-I monitor connector is provided on the AGP
board. For information on monitor connector pin assignments see “Appendix A.
Connector pin assignments,” on page 33 for SVGA and DVI.

Audio Subsystem
PC 300GL and PC 300PL personal computers come with an integrated audio
controller. These models, which are capable of playing and recording sounds, support
SoundBlaster, Adlib, and Microsoft Windows Sound System applications.
The device drivers for the preinstalled audio adapter are on the hard disk. The device
drivers are also available on the Device Drivers and Diagnostics CD provided with
models that come with preinstalled software.
If you connect an optional device to the audio adapter, follow the instructions
provided by the manufacturer.
Note:

Additional device drivers might be required. If necessary, contact the
manufacturer for information on these device drivers.

The following connectors are available on the audio adapter or integrated audio
controller:
•

10

PC 300 GL and 300 PL

Line Out port for connecting powered speakers or headphones. You must
connect a set of speakers to the Line Out port to hear audio from the adapter.

These speakers must be powered with a built in amplifier. In general, any
powered speakers designed for use with personal computers can be used with
the audio adapter. These speakers are available with a wide range of features
and power outputs.
•

Line In port for connecting musical devices, such as a portable CD-ROM player
or stereo.

•

Microphone for connecting a microphone.

Integrated peripheral controller
Control of the integrated input/output (I/O) and diskette drive controllers is
provided by a single module, the integrated peripheral controller (SMC FDC 87B813).
This module, which supports Plug and Play technology, controls the following
features:
•
•
•
•

Diskette drive interface
Serial port
Parallel port
Keyboard and mouse ports

Diskette Drive Interface
PC 300GL and PC 300PL personal computers have four drive bays for installing
internal devices. The following is a list of devices that the diskette drive subsystem
supports:
•
•
•
•

1.44 MB, 3.5 inch diskette drive
1.44 MB, 3.5 inch, 3-mode drive for Japan (no BIOS support for 3-mode drive)
1.2 MB, 5.25 inch diskette
1 Mbps, 500 Kbps, or 250 Kbps internal tape drive

One connector is provided on the system board for diskette drive support. For
information on the connector pin assignments, see “Diskette drive connector” on page
43.

Serial ports
Two universal asynchronous receiver/transmitter (UART) serial ports are integrated
into the system board. The two serial ports include 16-byte data, first-in first-out
(FIFO) buffers and have programmable baud rate generators. The serial ports are
NS16450 and PC16550A compatible.
For information on the connector pin assignments, see “Serial port connector” on
page 45.
Note:

Current loop interface is not supported.

Chapter 2. System board features

11

The following figure shows the serial port assignments in the configuration.
Table 4. Serial port assignments
Port assignment

Address range (hex)

IRQ level

Serial 1

03F8–03FF

IRQ4

Serial 2

02F8–02FF

IRQ3

Serial 3

03E8–03FF

IRQ4

Serial 4

O2E8–027F

IRQ13

The default setting for the serial port is COM1.

Parallel port
Integrated in the system board is support for extended capabilities port (ECP),
enhanced parallel port (EPP), and standard parallel port (SPP) modes. The modes of
operation are selected through the Configuration/Setup Utility program with the
default mode set to SPP.
The following figure shows the parallel port assignments used in the configuration.
Table 5. Parallel port assignments
Port assignment

Address range (hex)

IRQ level

Parallel 1

03BC–03BE

IRQ7

Parallel 2

0378–037F

IRQ5

Parallel 3

0278–03FF

IRQ5

The default setting for the parallel port is Parallel 1.
The system board has one connector for the parallel port. For information on the
connector pin assignments, see “Parallel port connector” on page 46.

Keyboard and mouse ports
A general purpose 8-bit microcontroller, 8042AH compatible, controls the mouse and
keyboard subsystem. The controller consists of 256 bytes of data memory and 2 KB of
read-only memory (ROM).
The controller has two logical devices: one controls the keyboard and the other
controls the mouse. The keyboard has two fixed I/O addresses, a fixed IRQ line, and
can operate without the mouse. The mouse cannot operate without the keyboard
because, although it has a fixed IRQ line, the mouse relies on the addresses of the
keyboard for operation. For the keyboard and mouse interfaces, no resource
assignments are given in the system memory addresses or DMA channels. For
information on the resource assignments, see “Input/output address map” on page
48 and “Appendix C. IRQ and DMA channel assignments,” on page 53.
The system board has one connector for the keyboard port and one connector for the
mouse port. For information on the connector pin assignments, see “Mouse and
keyboard port connectors” on page 45.

12

PC 300 GL and 300 PL

Network connection
Some PC 300 GL and PC 300 PL models are equipped with an Ethernet or token-ring
adapter that supports the Wake on LAN feature.
Features of the optional Wake on LAN Ethernet adapter are:
•
•
•
•
•
•

Operates in shared 10BASE-T or 100BASE-TX environment
Transmits and receives data at 10 Mbps or 100 Mbps
Has an RJ-45 connector for LAN attachment
Operates on symmetrical multiprocessing (SMP) environments
Supports Wake on LAN
Supports Remote Program Load (RPL) and Dynamic Host Configuration
Protocol (DHCP)

Features of the optional token-ring adapter are:
•
•
•
•

Transmits and receives data at 4 Mbps or 16 Mbps
Has RJ-45 and D-shell connectors for LAN attachment
Supports Wake on LAN
Supports Remote Program Load (RPL) and Dynamic Host Configuration
Protocol (DHCP)

The PC 300GL personal computer has a 3-pin header on the system board that
provides the AUX5 (auxiliary 5 volts) and wake-up signal connections.

Real-time clock and CMOS
The real-time clock is low-power and provides a time-of-day clock and a calendar. An
external battery source of 3 V dc maintains the settings.
The system uses 242 bytes of complementary metal-oxide semiconductor (CMOS)
memory to store data. To erase or reset CMOS memory to the default, use the small
rocker switch on the system board.
Note:

Refer to the instructions in the PC 300PL and PC 300GL User Guide before
attempting to reset CMOS.

To locate the battery and the rocker switches, see “Physical layout” on page 14.

Flash EEPROM
The system board uses two megabits (Mb) of flash electrically erasable
programmable, read-only memory (EEPROM) to store the basic input/output system
(BIOS), IBM logo, Configuration/Setup Utility, and Plug and Play data.
If necessary, you can update the EEPROM by downloading a stand-alone utility
program available from the IBM Web site: http://www.ibm.com/pc.

Expansion adapters
Each PCI-expansion connector is a 32-bit slot. PCI-expansion connectors support the
32-bit, 5 V dc, local-bus signalling environment defined in PCI Local Bus Specification
2.2.
PC 300GL personal computer types 6563, 6564, and 6574 and PC 300PL personal
computer type 6565 personal computers have three PCI slots to support the addition
of adapters. For information on installing adapters, see the PC 300GL and PC 300PL
User Guide.
Chapter 2. System board features

13

For information on the connector pin assignments, see “PCI connectors” on page 40.
Note:

PC 300GL computers do not support ISA expansion adapters or the IBM
PCMCIA adapter for PCI.

Physical layout
The system board might look slightly different from the one shown.
Note:

14

PC 300 GL and 300 PL

A diagram of the system board, including switch and jumper settings, is
attached to the underside of the computer cover.

Þ1ÝMicroprocessor
Þ2ÝDIMM 0
Þ3ÝDIMM 1
Þ4ÝFan connector
Þ5ÝPower connector
Þ6ÝSwitch/LED connector
Þ7ÝRFID connector (some models)
Þ8ÝPrimary EIDE connector
Þ9ÝSecondary EIDE connector
Þ10ÝDiskette drive connector
Þ11ÝFan connector
Þ12ÝLarge rocker switch (some models)

Þ13ÝSmall rocker switch
Þ14ÝBattery
Þ15ÝChassis intrusion detection connector
Þ16ÝWake on LAN connector
Þ17ÝAlert on LAN connector
Þ18ÝCD-ROM, CD-RW, or DVD drive connector
Þ19ÝPCI adapter slot 1
Þ20ÝPCI adapter slot 2
Þ21ÝPCI adapter slot 3 (for Alert on LAN adapter)
Þ22ÝChassis speaker connector
Þ23ÝAGP adapter slot

Rocker switches
The two rocker switches on the system board are used for custom configuration. For
the location of the small and large rocker switches, see items 12 and 13 above.
The large rocker switch has eight switches for setting microprocessor speeds for
compatibility with the system board. The following table shows the rocker switch
settings for compatibility with the corresponding microprocessor speeds.

Chapter 2. System board features

15

Table 6. Large rocker switch settings
Microprocessor
speed
100

1

2

3

4

5

6

7

8

Off

Off

On

Off

Off

Off

Off

Off

On

On

On

On

Off

Off

Off

Off

Off

Off

Off

Off

Off

Off

Off

Off

On

On

On

Off

Off

Off

Off

Off

On

On

Off

On

Off

Off

Off

Off

On

On

Off

Off

Off

Off

Off

Off

On

Off

On

On

Off

Off

Off

Off

On

Off

On

Off

Off

Off

Off

Off

On

Off

Off

On

Off

Off

Off

Off

On

Off

Off

Off

Off

Off

Off

Off

Off

On

On

On

Off

Off

Off

Off

Off

On

On

Off

Off

Off

Off

Off

150
200
133
200
266
133
200
266
166
250
333
200
300
400
233
350
466
266
400
533
300
450
600
333
500
666
366
500
733
400
600
800
433
650
866

16

PC 300 GL and 300 PL

Table 6. Large rocker switch settings
Microprocessor
speed
466

1

2

3

4

5

6

7

8

Off

On

Off

On

Off

Off

Off

Off

Off

On

Off

Off

Off

Off

Off

Off

Off

Off

On

On

Off

Off

Off

Off

Off

Off

Off

On

Off

Off

Off

Off

700
933
500
750
1000
533
800
1066
Reserved

The small rocker switch has three functions. By moving switch 1 to the On position,
you activate the diskette write-protect feature. By moving switch 2 to the On position,
you clear the CMOS. This rocker switch is also used for flash recovery. See the PC
300GL and PC 300PL User Guide for instruction.
Table 7. Small rocker switch settings
Function

On

Diskette write-protect

Switch 1

Clear CMOS

Switch 2

Cable connectors
Connections for attaching devices are provided on the back of the computer. Each
connection has a corresponding device symbol. The connectors are:
•
•
•
•
•
•
•
•

USB (2)
Mouse
Keyboard
Serial (2)
Parallel
Monitor
Ethernet adapter with RJ-45 connector (some models only)
Integrated audio controller with line in, line out, and microphone connectors

Connector panel
On the following connector panel illustrations, note the device connection symbols. A
connector provided by an adapter might not have an identifying symbol.
For pin-out details on connectors, see “Appendix A. Connector pin assignments,” on
page 33.

Chapter 2. System board features

17

The following illustration shows the connector panel for the desktop model.

2

2

1

1
DVI Monitor

Serial 2

Mouse

SVGA Monitor
Serial 1
Keyboard

18

PC 300 GL and 300 PL

USB 1

USB 2

Line In

Parallel
Headphone/
Line Out
Microphone

The following illustration shows the connector panel for the tower model.

Serial 2
Serial 1
2

1

Mouse
Keyboard
USB 2

2

1

USB 1
Line In
Headphone/
Line Out
Microphone
Parallel

SVGA Monitor

DVI Monitor

Chapter 2. System board features

19

20

PC 300 GL and 300 PL

Chapter 3. Physical specifications
This chapter lists the physical specifications for the PC 300GL personal computer
types 6563, 6564, and 6574 and PC 300 PL personal computer type 6565. The PC
300GL ad PC300PL have four expansion slots and four drive bays.
Note:

The PC 300GL and PC 300PL computers comply with FCC Class B
specifications.

PC 300 GL and PL desktop

Dimensions
•
•
•

Height: 138 mm (5.4 in.)
Width: 400 mm (15.75 in.)
Depth: 429 mm (16.9 in.)

Weight
•
•

Minimum configuration as shipped: 9.53 kg (21 lb)
Maximum configuration: 10.4 kg (23 lb)

Environment
•

Air temperature:
— System on: 10° to 35° C (50° to 95° F)
— System off: 10° to 43° C (50° to 110° F)

•

Humidity
— System on: 8% to 80%
— System off: 8% to 80%

•

Maximum altitude: 2134 m (7000 ft), the maximum altitude at which the
specified air temperatures apply. At higher altitudes, the maximum air
temperatures are lower than those specified.

Electrical input
•

Input voltage:
— Low range:
–
–
–
–

Minimum: 90 V ac
Maximum: 137 V ac
Input frequency range: 57 – 63 Hz
Voltage switch setting: 115 V ac

— High Range:
–
–
–
–

Minimum: 180 V ac
Maximum: 265 V ac
Input frequency range: 47 – 53 Hz
Voltage switch setting: 230 V ac

— Input kilovolt-amperes (kVA) (approximately):
–
–

© Copyright IBM Corp. 2000

Minimum configuration as shipped: 0.08 kVA
Maximum configuration: 0.51 kVA

21

Note:

Power consumption and heat output vary depending on the number and
type of optional features installed and the power-management optional
features in use.

Heat output
•

Approximate heat output in British thermal units (Btu) per hour:
— Minimum configuration: 256 Btu/hr (75 watts)
— Maximum configuration: 706 Btu/hr (207 watts)

Airflow
•

Approximately 0.5 cubic meter per minute (18 cubic feet per minute)

Acoustical noise-emission values
•

Average sound-pressure levels:
— At operator position:
–
–

Idle: 33 dBA
Operating: 39 dBA

— At bystander position-1 meter (3.3 ft):
–
–
Note:

Idle: 4.4 bels
Operating: 4.9 bels

These levels were measures in controlled acoustical environments according
to procedures specified by the American National Standards Institute (ANSI)
S12.10 and ISO 7779, and are reported in accordance with ISO 9296. Actual
sound-pressure levels in your location might exceed the average values stated
because of room reflections and other nearby noise sources. The declared
sound power levels indicate an upper limit, below which a large number of
computers will operate.

PC300 PL and GL tower
Dimensions
•
•
•

Height: 378 mm (14.9 in.)
Width: 192 mm (7.6 in.)
Depth: 383 mm (15.1 in.)

Weight
•
•

Minimum configuration as shipped: 8.3 kg (18.3 lb)
Maximum configuration: 10.2 kg (22.5 lb)

Environment
•

Air temperature:

•

— System on: 10° to 35°C (50° to 95° F)
— System off: 10° to 43°C (50° to 110° F)
Humidity
— System on: 8% to 80%

•

— System off: 8% to 80%
Maximum altitude: 2134 m (7000 ft), the maximum altitude at which the
specified air temperatures apply. At higher altitudes, the maximum air
temperatures are lower than those specified.

Electrical input
•

Input voltage:
— Low range:

22

PC 300 GL and 300 PL

–

Minimum: 90 V ac

–

Maximum: 137 V ac

–

Input frequency range: 57 – 63 Hz

– Voltage switch setting: 115 V ac
— High Range:
– Minimum: 180 V ac
– Maximum: 265 V ac
– Input frequency range: 47 – 53 Hz
– Voltage switch setting: 230 V ac
— Input kilovolt-amperes (kVA) (approximately):
–
–
Note:

Minimum configuration as shipped: 0.08 kVA
Maximum configuration: 0.51 kVA

Power consumption and heat output vary depending on the number and
type of optional features installed and the power-management optional
features in use.

Heat output
•

Approximate heat output in British thermal units (Btu) per hour:
— Minimum configuration: 256 Btu/hr (75 watts)
— Maximum configuration: 706 Btu/hr (207 watts)

Airflow
•

Approximately 0.5 cubic meter per minute (18 cubic feet per minute)

Acoustical noise-emission values
•

Average sound-pressure levels:
— At operator position:
– Idle: 33 dBA
– Operating: 40 dBA
— At bystander position-1 meter (3.3 ft):
–
–

Note:

Idle: 4.4 bels
Operating: 4.9 bels

These levels were measures in controlled acoustical environments according
to procedures specified by the American National Standards Institute (ANSI)
S12.10 and ISO 7779, and are reported in accordance with ISO 9296. Actual
sound-pressure levels in your location might exceed the average values stated
because of room reflections and other nearby noise sources. The declared
sound power levels indicate an upper limit, below which a large number of
computers will operate.

Chapter 3. Physical specifications

23

24

PC 300 GL and 300 PL

Chapter 4. Power supply
A 145-watt power supply drives your computer. The power supply provides 3.3-volt
power for the Pentium III microprocessor, core chip set, and 5-volt power for PCI
adapters. Also included is an auxiliary 5-volt (AUX 5) power supply to provide
power to power-management circuitry and a Wake on LAN adapter. The power
supply converts the ac input voltage into four dc output voltages and provides power
for the following:
•
•
•
•
•

System board
Adapters
Internal drives
Keyboard and auxiliary devices
USB devices

A logic signal on the power connector controls the power supply; the front panel
switch is not directly connected to the power supply.
The power supply connects to the system board with a 2 x 10 pin connector.

Power input
The following table shows the power input specifications. The power supply has a
manual switch to select the correct input voltage.
Table 8. Power input requirements
Specification

Measurements

Input voltage, low range

100 (min) to 127 (max) V ac

Input voltage, high range

200 (min) to 240 (max) V ac

Input frequency

50 Hz ± 3 Hz or 60 Hz ± 3 Hz

Power output
The following figures show the power supply output of all the connectors, including
the system board, DASD, PCI, and auxiliary outputs.
Table 9. Power output (145 watts)
Output voltage

Tolerance

Minimum current

Maximum current

+5 V dc

+5% to -5%

1.5 A

18.0 A

+12 V dc

+5% to -5%

0.02 A

4.2 A

-12 V dc

+10% to -10%

0.0 A

0.4 A

+3.3 V dc

+5% to -5%

0.0 A

10.0 A

+5 V ac (auxiliary)

+5% to -5%

0.0 A

0.720 A

The total combined 3.3 V and 5 V power must not exceed 100 watts.
© Copyright IBM Corp. 2000

25

Component outputs
The power supply provides separate voltage sources for the system board and
internal storage devices. The following figures show the approximate power that is
provided for specific system components. Many components draw less current than
the maximum shown.
Table 10. System board
Supply voltage

Maximum current

Tolerance

+3.3 V dc

5000 mA

+5.0% to -5.0%

+5.0 V dc

6000 mA

+5.0 to -4.0%

+12.0 V dc

25.0 mA

+5.0% to -5.0%

-12.0 V dc

25.0 mA

+10.0% to -9.0%

Supply voltage

Maximum current

Tolerance

+5.0 V dc

275 mA

+5.0% to -4.0%

Table 11. Keyboard port

Table 12. Auxiliary device port
Supply voltage

Maximum current

Tolerance

+5.0 V dc

300 mA

+5.0% to -4.0%

Table 13. PCI-bus adapters (per slot)
Supply voltage

Maximum current

Tolerance

+5.0 V dc

1000 mA

+5.0% to -4.0%

+3.3 V dc

1500 mA

+5.0% to -4.0%

Note:

For each PCI connector, the maximum power consumption is rated at 5 watts
for +5 V dc and +3.3 V dc combined. If maximum power is used, the overall
system configuration will be limited in performance.

Table 14. USB port
Supply voltage

Maximum current

Tolerance

+5.0 V dc

500 mA

+5.0%to -4.0%

Table 15. Internal DASD

26

Supply voltage

Maximum current

Tolerance

+5.0 V dc

1400 mA

+5.0% to -5.0%

PC 300 GL and 300 PL

Table 15. Internal DASD
Supply voltage

Maximum current

Tolerance

+12.0 V dc

1500 mA at startup, 400 mA
when active

+5.0% to -5.0%

Table 16. Video port pin 9
Supply voltage

Maximum current

Tolerance

+5.0 V dc

1100 mA

+5.0% to -5.0%

Note:

Some adapters and hard disk drives draw more current than the rated
maximums. These adapters and drives can be installed in the system;
however, the power supply will shut down if the total power used exceeds
the maximum power that is available.

Output protection
The power supply protects against output overcurrent, overvoltage, and short
circuits. See the power supply specifications on the previous pages for details.
A short circuit that is placed on any dc output (between outputs or between an output
and a dc return) latches all dc outputs into a shutdown state, with no damage to the
power supply. If this shutdown state occurs, the power supply returns to normal
operation only after the fault has been removed and the power switch has been
turned off for at least one second.
If an overvoltage fault occurs (in the power supply), the power supply latches all dc
outputs into a shutdown state before any output exceeds 130% of the power supply
value.

Connector description
The power supply for PC 300GL and PC 300PL personal computers has four, 4-pin
connectors for internal devices. The total power used by the connectors must not
exceed the amount shown in “Component outputs” on page 26. For connector pin
assignments, see “Appendix A. Connector pin assignments,” on page 33.

Chapter 4. Power supply

27

28

PC 300 GL and 300 PL

Chapter 5. System software
This section briefly describes some of the system software included with your
computer.

BIOS
Your personal computer uses the IBM basic input/output system (BIOS), which is
stored in flash electrically erasable programmable read-only memory (EEPROM).
Some features of the BIOS are:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

PCI support according to PCI BIOS Specification 2.2
Microsoft PCI IRQ Routing Table
Plug and Play support according to Plug and Play BIOS Specification 1.1a
Advanced Power Management (APM) support according to APM BIOS Interface
Specification 1.2
Wake on LAN support
Wake on Ring support
Remote Initial Program Load (RIPL) and Dynamic Host Configuration Protocol
(DHCP)
Flash-over-LAN support
Alternate startup sequence
IBM Look and Feel - such as screen arrangements and user interface
ACPI (Advanced Configuration and Power Interface)
IDE Logical Block Addressing (LBA)
LSA 2.0 support
Digital optical disk support
LS-120 disk drive support
DM BIOS 2.1 (DMI 2.0 compliant)
PC99 compliance

Plug and Play
Support for Plug and Play conforms to the following:
•
•
•
•
•

Plug and Play BIOS Specification 1.1a and 1.0
Plug and Play BIOS Extension Design Guide
Plug and PLay BIOS Specification, Errata, and Clarifications 1.0
Guide to Integrating the Plug and Play BIOS Extensions with system BIOS 1.2
Plug and Play Kit for DOS and Windows

POST
IBM power-on self-test (POST) code is used. Also, initialization code is included for
the on-board system devices and controllers.
POST error codes include text messages for determining the cause of an error. For
more information, see “Appendix D. Error codes,” on page 55 and your PC 300GL and
PC 300PL User Guide.

© Copyright IBM Corp. 2000

29

Configuration/Setup Utility program
The Configuration/Setup Utility program provides menu choices for devices, I/O
ports, date and time, system security, start options, advanced setup, and power
management.
More detailed information on using the Configuration/Setup Utility program is in the
PC 300GL and PC 300PL User Guide.

Advanced Power Management (APM)
The PC 300GL computers have built-in energy-saving capabilities. Advanced Power
Management (APM) is a feature that reduces the power consumption of components
when they are not in use. When enabled, APM initiates reduced-power modes for the
monitor, microprocessor, and hard disk drive after a specified period of inactivity.
The BIOS supports APM 1.2. This enables the system to enter a power-management
state, reducing the power drawn from the AC electrical outlet. Advanced Power
Management is enabled through the Configuration/Setup Utility program and is
controlled by the individual operating system.
For more information on APM, see the PC 300GL and PC 300PL User Guide and
Understanding Your Personal Computer.

Advanced Configuration and Power Interface (ACPI)
Advanced Configuration and Power Interface (ACPI) BIOS mode enables the
operating system to control the power-management features of your computer. Not
all operating systems support ACPI BIOS mode. Refer to your operating-system
documentation to determine if ACPI is supported.

Flash update utility program
The flash update utility program is a stand-alone program to support flash updates.
This utility program updates the BIOS code and the machine readable information
(MRI) to different languages.
The latest version of the flash update utility program is available on the IBM Web site
at http://www.ibm.com/pc/support and can be copied to a 3.5-inch diskette.

Diagnostic program
The diagnostic program that comes with PC 300PL and the PC 300GL personal
computers is provided as a startable IBM Enhanced Diagnostic diskette image on the
IBM Product Recovery CD or the Device Driver and IBM Enhanced Diagnostic CD. It runs
independently of the operating system. The user interface is WaterGate Software PCDoctor. The diagnostic program can also be downloaded from the following World
Wide Web page: http://www.ibm.com/pc/support/. For more information on the
diagnostic program, see the PC 300GL and PC 300PL User Guide.

30

PC 300 GL and 300 PL

Chapter 6. System compatibility
This chapter discusses some of the hardware, software, and BIOS compatibility issues
for the computer. See the Compatibility Report under, “Related publications” on page
vii for a list of compatible hardware and software options.

Hardware compatibility
This section discusses hardware, software, and BIOS compatibility that must be
considered when designing application programs.
The functional interfaces are compatible with the following interfaces:
•

Intel 8259 interrupt controllers (edge-triggered mode)

•

National Semiconductor NS16450 and NS126550A serial communications
controllers

•

Motorola MC146818 Time of Day Clock command and status (CMOS
reorganized)

•

Intel 8254 timer, driven from a 1.193 MHz clock (channels 0, 1, and 2)

•

Intel 8237 DMA controller, except for the Command and Request registers and
the Rotate and Mask functions; the Mode register is partially supported

•

Intel 8272 or 82077 diskette drive controllers

•

Intel 8042 keyboard controller at address hex 0060 and hex 0064

•

All video standards using VGA, EGA, CGA, MDA, and Hercules modes

•

Parallel printer ports (Parallel 1, Parallel 2, and Parallel 3) in compatibility mode

Use this information to develop application programs. Whenever possible, use the
BIOS as an interface to hardware to provide maximum compatibility and portability
of applications among systems.

Hardware interrupts
Hardware interrupts are level-sensitive for PCI interrupts. The interrupt controller
clears its in-service register bit when the interrupt routine sends and End-of-Interrupt
(EOI) command to the controller. The EOI command is sent regardless of whether the
incoming interrupt request to the controller is active or inactive.
The interrupt-in-progress latch is readable at an I/O-address bit position. This latch is
read during the interrupt service routine and might be reset by the read operation or it
might require an explicit reset.
Note:

For performance and latency considerations, designers might want to limit
the number of devices sharing an interrupt level.

With level-sensitive interrupts, the interrupt controller requires that the interrupt
request be inactive at the time the EOI command is sent; otherwise, a new interrupt
request will be detected. To avoid this, a level-sensitive interrupt handler must clear
the interrupt condition (usually by a read or write operation to an I/O port on the
device causing the interrupt). After processing the interrupt, the interrupt handler:
1. Clears the interrupt
2. Waits one I/O delay
© Copyright IBM Corp. 2000

31

3. Sends the EOI
4. Waits one I/O delay
5. Enables the interrupt through the Set Interrupt Enable Flag command
Hardware interrupt IRQ9 is defined as the replacement interrupt level for the cascade
level IRQ2. Program interrupt sharing is implemented on IRQ2, interrupt hex 0A.
The following processing occurs to maintain compatibility with the IRQ2 used by IBM
Personal Computer products:
1. A device drives the interrupt request active on IRQ2 of the channel.
2. This interrupt request is mapped in hardware to IRQ9 input on the second
interrupt controller.
3. When the interrupt occurs, the system microprocessor passes control to the IRQ9
(interrupt hex 71) interrupt handler.
4. This interrupt handler performs an EOI command to the second interrupt
controller and passes control to the IRQ2 (interrupt hex 0A) interrupt handler.
5. This IRQ2 interrupt handler, when handling the interrupt, causes the device to
reset the interrupt request before performing an EOI command to the master
interrupt controller that finishes servicing the IRQ2 request.

Software compatibility
To maintain software compatibility, the interrupt polling mechanism that is used by
IBM Personal Computer products is retained. Software that interfaces with the reset
port for the IBM Personal Computer positive-edge interrupt sharing (hex address
02Fx or 06Fx, where x is the interrupt level) does not create interference.

Software interrupts
With the advent of software interrupt sharing, software interrupt routines must daisy
chain interrupts. Each routine must check the function value, and if the function
value is not in the range of function calls, that routine must transfer control to the next
routine in the chain. Because software interrupts are initially pointed to address 0:0
before daisy chaining, check for this case. If the next routine is pointed to address 0:0
and the function call is out of range, the appropriate action is to set the carry flag and
initiate a RET 2 to indicate an error condition.

Machine-sensitive programs
Programs can select machine-specific features, but they must first identify the
machine and model type. IBM has defined methods for uniquely determining the
specific machine type. The machine model byte can be found through interrupt 15H,
Return System Configuration Parameters function (AH)=(C0H).

32

PC 300 GL and 300 PL

Appendix A. Connector pin assignments
The following figures show the pin assignments for various system board connectors.

SVGA monitor connector
5

1

10

6
15

11

Table 17. SVGA monitor port connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

1

Red

O

9

+5 V, used by
DDC2B

NA

2

Green

O

10

Ground

NA

3

Blue

O

11

Monitor ID 0 Not used

I

4

Monitor ID 2 Not used

I

12

DDC2B serial
data

I/O

5

Ground

NA

13

Horizontal
sync

O

6

Red ground

NA

14

Vertical sync

O

7

Green ground

NA

15

DDC2B clock

I/O

8

Blue ground

NA

© Copyright IBM Corp. 2000

33

DVI-I monitor connector
C1

1

C2

C3

C4
C5

Table 18. DVI-I monitor port connector pin assignments - main pin field
Pin

Signal

Pin

Signal

1

TMDS data 2+

13

TMDS data 3+

2

TMDS data 2-

14

+5V power

3

TMDS data 2/4 return

15

Ground

4

TMDS data 4-

16

Hot plug detect

5

TMDS data 4+

17

TMDS data 0-

6

DDC clock

18

TMDS data 0+

7

DDC data

19

TMDS data 0-

8

Analog vertical sync

20

TMDS data 0/5 shield

9

TMDS data 1-

21

TMDS data 5+

10

TMDS data 1+

22

TMDS clock shield

11

TMDS 1/3 shield

23

TMDS clock+

12

TMDS data 3+

24

TMDS clock-

Table 19. DVI connector pin assignments - micro cross section
Pin

Signal

C1

Red video out

C2

Green video out

C3

Analog blue

C4

Analog horizontal sync

C5

Video/pixel clock return

System memory connector

34

85

168

1

84

PC 300 GL and 300 PL

Table 20. System memory connector pin assignments
Pin

x64 nonparity

x72 ECC

Pin

x64 nonparity

x72 ECC

1

VSS

VSS

85

VSS

VSS

2

DQ0

DQ0

86

DQ32

DQ32

3

DQ1

DQ1

87

DQ33

DQ33

4

DQ2

DQ2

88

DQ34

DQ34

5

DQ3

DQ3

89

DQ35

DQ35

6

VCC

VCC

90

VCC

VCC

7

DQ4

DQ4

91

DQ36

DQ36

8

DQ5

DQ5

92

DQ37

DQ37

9

DQ6

DQ6

93

DQ38

DQ38

10

DQ7

DQ7

94

DQ39

DQ39

11

DQ8

DQ8

95

DQ40

DQ40

12

VSS

VSS

96

VSS

VSS

13

DQ9

DQ

97

DQ41

DQ41

14

DQ10

DQ10

98

DQ42

DQ42

15

DQ11

DQ11

99

DQ43

DQ43

16

DQ12

DQ12

100

DQ44

DQ44

17

DQ13

DQ13

101

DQ45

DQ45

18

VCC

VCC

102

VCC

VCC

19

DQ14

DQ14

103

DQ46

DQ46

20

DQ15

DQ15

104

DQ47

DQ47

21

NC

CB0

105

NC

CB4

22

NC

CB1

106

NC

CB5

23

VSS

VSS

107

VSS

VSS

24

NC

NC

108

NC

NC

25

NC

NC

109

NC

NC

26

VCC

VCC

110

VCC

VCC

27

/WE

/WE0

111

/CAS

/CAS

28

DQMB0

DQMB0

112

DQMB4

DQMB4

29

DQMB1

DQMB1

113

DQMB5

DQMB5

30

/S0

/S0

114

NC

/S1

31

DU

NC

115

/RAS

/RAS

32

VSS

VSS

116

VSS

VSS

33

A0

A0

117

A1

A1

34

A2

A2

118

A3

A3

35

A4

A4

119

A5

A5

Appendix A. Connector pin assignments

35

Table 20. System memory connector pin assignments
Pin

x64 nonparity

x72 ECC

Pin

x64 nonparity

x72 ECC

36

A6

A6

120

A7

A7

37

A8

A8

121

A9

A9

38

A10/AP

A10/AP

122

BA0

BA0

39

NC

BA1

123

NC

A11

40

VCC

VCC

124

VCC

VCC

41

VCC

VCC

125

CK1

CK1

42

CK0

CK0

126

A12

A12

43

VSS

VSS

127

VSS

VSS

44

DU

NC

128

CKE0

CKE0

45

/S2

/S2

129

NC

/S3

46

DQMB2

DQMB2

130

DQMB6

DQMB6

47

DQMB3

DQMB3

131

DQMB7

DQMB7

48

DU

NC

132

A13

A13

49

VCC

VCC

133

VCC

VCC

50

NC

NC

134

NC

NC

51

NC

NC

135

NC

NC

52

NC

CB2

136

NC

CB6

53

NC

CB3

137

NC

CB7

54

VSS

VSS

138

VSS

VSS

55

DQ16

DQ16

139

DQ48

DQ48

56

DQ17

DQ17

140

DQ49

DQ49

57

DQ18

DQ18

141

DQ50

DQ50

58

DQ19

DQ19

142

DQ51

DQ51

59

VCC

VCC

143

VCC

VCC

60

DQ20

DQ20

144

DQ52

DQ52

61

NC

NC

145

NC

NC

62

NC

NC

146

NC

NC

63

NC

CKE1

147

NC

NC

64

VSS

VSS

148

VSS

VSS

65

DQ21

DQ21

149

DQ53

DQ53

66

DQ22

DQ22

150

DQ54

DQ54

67

DQ23

DQ23

151

DQ55

DQ55

68

VSS

VSS

152

VSS

VSS

69

DQ24

DQ24

153

DQ56

DQ56

70

DQ25

DQ25

154

DQ57

DQ57

36

PC 300 GL and 300 PL

Table 20. System memory connector pin assignments
Pin

x64 nonparity

x72 ECC

Pin

x64 nonparity

x72 ECC

71

DQ26

DQ26

155

DQ58

DQ58

72

DQ27

DQ27

156

DQ59

DQ59

73

VCC

VCC

157

VCC

VCC

74

DQ28

DQ28

158

DQ60

DQ60

75

DQ29

DQ29

159

DQ61

DQ61

76

DQ30

DQ30

160

DQ62

DQ62

77

DQ31

DQ31

161

DQ63

DQ63

78

VSS

VSS

162

VSS

VSS

79

CK2

CK2

163

CK3

CK3

80

NC

NC

164

NC

NC

81

NC

NC

165

SA0

SA0

82

SKA

SDA

166

SA1

SA1

83

SCL

SCL

167

SA2

SA2

84

VCC

VCC

168

VCC

VCC

Table 21. System memory connector pin input/output
Pin

Signal name

I/O

Pin

Signal name

I/O

1

GND

N/A

85

GND

N/A

2

MD0

I/O

86

MD32

I/O

3

MD1

I/O

87

MD33

I/O

4

MD2

I/O

88

MD34

I/O

5

MD3

I/O

89

MD35

I/O

6

VDD

I/O

90

VDD

N/A

7

MD4

I/O

91

MD36

N/A

8

MD5

I/O

92

MD37

I/O

9

MD6

I/O

93

MD38

I/O

10

MD7

I/O

94

MD39

I/O

11

MD8 (PAR0)

I/O

95

MD40

I/O

12

GND

N/A

96

GND

N/A

13

MD9

I/O

97

MD41

I/O

14

MD10

I/O

98

MD42

I/O

15

MD11

I/O

99

MD43

I/O

16

MD12

I/O

100

MD44

I/O

17

MD13

I/O

101

MD45

I/O

18

VDD

N/A

102

VDD

N/A

Appendix A. Connector pin assignments

37

Table 21. System memory connector pin input/output
Pin

Signal name

I/O

Pin

Signal name

I/O

19

MD14

I/O

103

MD46

I/O

20

MD15

I/O

104

MD47

I/O

21

NC

I/O

105

NC

I/O

22

NC

I/O

106

NC

I/O

23

GND

I/O

107

GND

N/A

24

NC

N/A

108

NC

N/A

25

NC

N/A

109

NC

N/A

26

VDD

N/A

110

VDD

N/A

27

WE#

I

111

CAS#

N/A

28

DQMB0#

I

112

DQMB4#

I

29

DQMB1#

I

113

DQMB4#

I

30

S0#

I

114

S1#

I

31

OE0#

I

115

RAS#

N/A

32

GND

N/A

116

GND

N/A

33

A0

I

117

A1

I

34

A2

I

118

A3

I

35

A4

I

119

A5

I

36

A6

I

120

A7

I

37

A8

I

121

A9

I

38

A10/AP

I

122

A11

I

39

NC

123

NC

40

VDD

N/A

124

VDD

N/A

41

NC

N/A

125

CK1

N/A

42

CK0

N/A

126

A14

O

43

GND

N/A

127

GND

N/A

44

OE2#

I

128

CKE0

N/A

45

S2#

I

129

S3#

I

46

DQMB2#

I

130

DQMB6#

I

47

DQMB3#

I

131

DQMB7#

I

48

WE2#

I

132

A15

I

49

VDD

N/A

133

VDD

N/A

50

NC

N/A

134

NC

N/A

51

NC

N/A

135

NC

N/A

52

NC

I/O

136

NC

I/O

53

NC

I/O

137

NC

I/O

38

PC 300 GL and 300 PL

Table 21. System memory connector pin input/output
Pin

Signal name

I/O

Pin

Signal name

I/O

54

GND

N/A

138

GND

N/A

55

MD16

I/O

139

MD48

I/O

56

MD17

I/O

140

MD49

I/O

57

MD18

I/O

141

MD50

I/O

58

MD19

I/O

142

MD51

I/O

59

VDD

N/A

143

VDD

N/A

60

MD20

I/O

144

MD52

I/O

61

CKE1

N/A

145

NC

N/A

62

VREF

N/A

146

VREF

N/A

63

(CKE1)*

N/A

147

NC

N/A

64

GND

N/A

148

GND

N/A

65

MD21

I/O

149

MD53

I/O

66

MD22

I/O

150

MD54

I/O

67

MD23

I/O

151

MD55

I/O

68

GND

N/A

152

GND

N/A

69

MD24

I/O

153

MD56

I/O

70

MD25

I/O

154

MD57

I/O

71

MD26

I/O

155

MD58

I/O

72

MD27

I/O

156

MD59

I/O

73

VDD

N/A

157

VDD

N/A

74

MD28

I/O

158

MD60

I/O

75

MD29

I/O

159

MD61

I/O

76

MD30

I/O

160

MD62

I/O

77

MD31

I/O

161

MD63

I/O

78

GND

N/A

162

GND

N/A

79

CK2

O

163

CK3

O

80

NC

N/A

164

NC

N/A

81

NC

O

165

SA0

O

82

SDA

O

166

SA1

O

83

SCL

O

167

SA0

O

84

VDD

N/A

168

VDD

N/A

Appendix A. Connector pin assignments

39

PCI connectors
A1
A62

A2

B1

B62
B2

Table 22. PCI connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

A1

TRST#

O

B1

-12 V dc

N/A

A2

+12 V dc

N/A

B2

TCK

O

A3

+12 V dc

O

B3

Ground

N/A

A4

TDI

O

B4

TDO

I

A5

+5 V dc

N/A

B5

+5 V dc

N/A

A6

INTA#

I

B6

+5 V dc

N/A

A7

INTC#

I

B7

INTB#

I

A8

+5 V dc

N/A

B8

INTD#

I

A9

Reserved

N/A

B9

PRSNT1#

I

A10

+5 V dc (I/O)

N/A

B10

Reserved

N/A

A11

Reserved

N/A

B11

PRNST2

I

A12

Ground

N/A

B12

Ground

N/A

A13

Ground

N/A

B13

Ground

N/A

A14

Reserved

N/A

B14

Reserved

N/A

A15

RST#

O

B15

Ground

N/A

A16

+5 V dc (I/O)

N/A

B16

O

O

A17

GNT#

O

B17

Ground

N/A

A18

Ground

N/A

B18

REQ#

I

A19

PCIPME

N/A

B19

+5 V dc (I/O)

N/A

A20

Address/data 30

I/O

B20

Address/data 31

I/O

A21

+3.3 V dc

N/A

B21

Address/data 29

I/O

A22

Address/data 28

I/O

B22

Ground

N/A

A23

Address/data 26

I/O

B23

Address/data 27

I/O

A24

Ground

I/O

B24

Address/data 25

N/A

A25

Address/data 24

I/O

B25

+3.3 V dc

N/A

A26

IDSEL

O

B26

C/BE 3#

I/O

A27

+3.3 V dc

N/A

B27

Address/data 23

I/O

40

PC 300 GL and 300 PL

Table 22. PCI connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

A28

Address/data 22

I/O

B28

Ground

N/A

A29

Address/data 20

I/O

B29

Address/data 21

I/O

A30

Ground

I/O

B30

Address/data 19

N/A

A31

Address/data 18

I/O

B31

+3.3 V dc

N/A

A32

Address/data 16

I/O

B32

Address/data 17

I/O

A33

+3.3 V dc

N/A

B33

C/BE2#

I/O

A34

FRAME#

I/O

B34

Ground

N/A

A35

Ground

N/A

B35

IRDY#

I/O

A36

TRDY#

I/O

B36

+3.3 V dc

N/A

A37

Ground

N/A

B37

DEVSEL#

I/O

A38

STOP#

I/O

B38

Ground

N/A

A39

+3.3 V dc

N/A

B39

LOCK#

I/O

A40

SDONE

I/O

B40

PERR#

I/O

A41

SBO#

I/O

B41

+3.3 V dc

N/A

A42

Ground

N/A

B42

SERR#

I/O

A43

+3.3 V dc

N/A

B43

+3.3 V dc

N/A

A44

C/BE(1)#

I/O

B44

C/BE 1#

I/O

A45

Address/data 14

I/O

B45

Address/data 14

I/O

A46

Ground

N/A

B46

Ground

N/A

A47

Address/data 12

I/O

B47

Address/data 12

I/O

A48

Address/data 10

I/O

B48

Address/data 10

I/O

A49

Ground

N/A

B49

Ground

N/A

A50

Key

N/A

B50

Key

N/A

A51

Key

N/A

B51

Key

N/A

A52

Address/data 8

I/O

B52

Address/data 8

I/O

A53

Address/data 7

I/O

B53

Address/data 7

I/O

A54

+3.3 V dc

N/A

B54

+3.3 V dc

N/A

A55

Address/data 5

I/O

B55

Address/data 5

I/O

A56

Address/data 3

I/O

B56

Address/data 3

I/O

A57

Ground

N/A

B57

Ground

N/A

A58

Address/data 1

I/O

B58

Address/data 1

I/O

A59

+5 V dc (I/O)

N/A

B59

+5 V dc (I/O)

N/A

A60

ACK64#

I/O

B60

ACK64#

I/O

A61

+5 V dc

N/A

B61

+5 V dc

N/A

A62

+5 V dc

N/A

A62

+5 V dc

N/A

Appendix A. Connector pin assignments

41

IDE connectors
2

40

1

39

Table 23. IDE connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

1

RESET

O

21

NC

N/A

2

Ground

N/A

22

Ground

N/A

3

Data bus bit 7

I/O

23

I/O write

O

4

Data bus bit 8

I/O

24

NC

N/A

5

Data bus bit 6

I/O

25

I/O read

O

6

Data bus bit 9

I/O

26

Ground

I

7

Data bus bit 5

I/O

27

I/O channel ready I

8

Data bus bit 10

I/O

28

ALE

O

9

Data bus bit 4

I/O

29

NC

N/A

10

Data bus bit 11

I/O

30

Ground

N/A

11

Data bus bit 3

I/O

31

IRQ

I

12

Data bus bit 12

I/O

32

CS16#

I

13

Data bus bit 2

I/O

33

SA1

O

14

Data bus bit 13

I/O

34

PDIAG#

I

15

Data bus bit 1

I/O

35

SA0

O

16

Data bus bit 14

I/O

36

SA2

O

17

Data bus bit 0

I/O

37

CS0#

O

18

Data bus bit 15

I/O

38

CS1

O

19

Ground

N/A

39

Active#

I

20

Key (Reserved)

N/A

40

Ground

N/A

42

PC 300 GL and 300 PL

Diskette drive connector
2

34

1

33

Table 24. Diskette drive connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

1

Drive 2 installed #

I

18

Direction in#

O

2

High density
select

O

19

Ground

N/A

3

Not connected

N/A

20

Step#

O

4

Not connected

N/A

21

Ground

N/A

5

Ground

N/A

22

Write data #

O

6

Data rate 0

N/A

23

Ground

N/A

7

Ground

N/A

24

Write enable#

O

8

Index#

I

25

Ground

N/A

9

Reserved

N/A

26

Track0#

I

10

Motor enable 0#

O

27

MSEN0

I

11

Ground

N/A

28

Write protect#

I

12

Drive select 1#

O

29

Ground

N/A

13

Ground

N/A

30

Read data#

I

14

Drive select 0#

O

31

Ground

N/A

15

Ground

N/A

32

Head 1 select#

O

16

Motor enable 1#

O

33

Data rate 1

N/A

17

MSEN1

I

34

Diskette change# I

Appendix A. Connector pin assignments

43

Power supply connector
Table 25. Power supply connector pin assignments
Pin

Signal

Function

Pin

Signal

Function

1

3.3 V dc

+3.3 V dc

11

3.3 V dc

+3.3 V dc

2

3.3 V dc

+3.3 V dc

12

-12 V dc

-12 V dc

3

COM

Ground

13

COM

Ground

4

5 V dc

+5 V dc

14

PS-ON

DC Remote
Enable

5

COM

Ground

15

COM

Ground

6

5 V dc

+5 V dc

16

COM

Ground

7

COM

Ground

17

COM

Ground

8

POK

PWR GOOD

18

Reserved

Reserved

9

5 VSB

Standby Voltage

19

5 V dc

+5 V dc

10

12 V dc

+12 V dc

20

5 V dc

+5 V dc

Wake on LAN connectors
Table 26. J14 Wake on LAN connector pin assignments
Pin

Description

1

+5 V AUX

2

Ground

3

Internal Wake on LAN

USB port connectors
1

2

3

4

Table 27. USB port connector pin assignments
Pin

Signal

1

VCC

2

-Data

3

+Data

4

Ground

44

PC 300 GL and 300 PL

Mouse and keyboard port connectors

6

5

4

3
1

2

Table 28. Mouse port connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

1

Data

I/O

4

+5 V dc

N/A

2

Reserved

I/O

5

Clock

I/O

3

Ground

N/A

6

Reserved

N/A

Pin

Signal

I/O

Table 29. Keyboard port connector pin assignments
Pin

Signal

I/O

1

Keyboard data I/O

4

+5 V dc

N/A

2

Mouse data

I/O

5

Keyboard
Clock

I/O

3

Ground

N/A

6

Mouse clock

N/A

Serial port connector
5

1

6

9

Table 30. Serial port connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

1

Data carrier detect

I

5

Ground

N/A

2

Receive data#

I

6

Data set ready

I

3

Transmit data#

O

7

Request to send

O

4

Data terminal read

O

8

Clear to send

I

9

Ring indicator

Appendix A. Connector pin assignments

45

Parallel port connector
1

13

25

14

Table 31. Parallel port connector pin assignments
Pin

Signal

I/O

Pin

Signal

I/O

1

STROBE#

I/O

14

AUTO FD XT# O

2

Data bit 0

I/O

15

ERROR#

I

3

Data bit 1

I/O

16

INIT#

O

4

Data bit 2

I/O

17

SLCT IN#

O

5

Data bit 3

I/O

18

Ground

N/A

6

Data bit 4

I/O

19

Ground

N/A

7

Data bit 5

I/O

20

Ground

N/A

8

Data bit 6

I/O

21

Ground

N/A

9

Data bit 7

I/O

22

Ground

N/A

10

ACK#

I

23

Ground

N/A

11

BUSY

I

24

Ground

N/A

12

PE

I

25

Ground

N/A

13

SLCT

I

46

PC 300 GL and 300 PL

Appendix B. System address maps
The following charts represent how the hard disk stores different types of
information. Address ranges and byte sizes are approximate.

System memory map
The first 640 KB of system board RAM is mapped starting at address hex 0000000. A
256 byte area and a 1 KB area of this RAM are reserved for BIOS data areas. Memory
can be mapped differently if POST detects an error.
Table 32. System memory map
Address range
(decimal)

Address range (hex)

Size

Description

0–512 KB

00000–7FFFF

512 KB

Conventional

512–639 KB

80000–9FBFF

127 KB

Extended conventional

639–640 KB

9FC00–9FFFF

1 KB

Extended BIOS data

640–767 KB

A0000–BFFFF

128 KB

Dynamic video memory display
cache

768–800 KB

C0000–C7FFFF

32 KB

Video ROM BIOS (shadowed)

800–896 KB

C8000–DFFFF

96 KB

PCI space, available to adapter
ROMs

896 KB–1 MB

E0000–FFFFF

128 KB

System ROM BIOS (main memory
shadowed)

1–16 MB

100000–FFFFFF

15 MB

PCI space

16–4096 MB

1000000–FFDFFFF

4080 MB

PCI space (positive decode)

4096–4120 MB

FFFE0000–FFFFFFFF

128 KB

System ROM BIOS

© Copyright IBM Corp. 2000

47

Input/output address map
The following lists resource assignments for the I/O address map. Any addresses
that are not shown are reserved.
Table 33. I/O address map
Address (hex)

Size

Description

0000–000F

16 bytes

DMA 1

0010–001F

16 bytes

General I/O locations - available to PCI bus

0020–0021

2 bytes

Interrupt controller 1

0023–003F

30 bytes

General I/O locations - available to PCI bus

0040–0043

4 bytes

Counter/timer 1

0044–00FF

28 bytes

General I/O locations - available to PCI bus

0060

1 byte

Keyboard controller byte - reset IRQ

0061

1 byte

System port B

0064

1 byte

Keyboard controller, CMB/STAT byte

0070, bit 7

1 bit

Enable NMI

0070, bits 6:0

1 bit

Real-time clock, address

0071

1 byte

Real-time clock, data

0072–007F

14 bytes

General I/O locations - available to PCI bus

0080

1 byte

POST checkpoint register during POST only

008F

1 byte

Refresh page register

0080–008F

16 bytes

ICH1, DMA page registers

0090–0091

15 bytes

General I/O locations - available to PCI bus

0092

1 byte

PS/2 keyboard controller registers

0093–009F

15 bytes

General I/O locations

00A0–00A1

2 bytes

Interrupt controller 2

00A2–00BF

30 bytes

APM control

00C0–00DF

31 bytes

DMA 2

00E0–00EF

16 bytes

General I/O locations - available to PCI bus

00F0

1 byte

Coprocessor error register

00F1–016F

127 bytes

General I/O locations - available to PCI bus

0170–0177

8 bytes

Secondary IDE channel

01F0–01F7

8 bytes

Primary IDE channel

0200–0207

8 bytes

Available

0220–0227

8 bytes

Serial port 3 or 4

0228–0277

80 bytes

General I/O locations - available to PCI bus

0278–027F

8 bytes

LPT3

48

PC 300 GL and 300 PL

Table 33. I/O address map
Address (hex)

Size

Description

0280–02E7

102 bytes

Available

02E8–02EF

8 bytes

Serial port 3 or 4

02F8–02FF

8 bytes

COM2

0338–033F

8 bytes

Serial port 3 or 4

0340–036F

48 bytes

Available

0370–0371

2 bytes

SIO planar Plug and Play index/data registers

0372–0375

4 bytes

Available

0376–0377

2 bytes

IDE channel 1 command

0378–037F

8 bytes

LPT2

0380–03B3

52 bytes

Available

03B4–03B7

4 bytes

Video

03BA

1 byte

Video

03BC–03BE

16 bytes

LPT1

03C0–03CF

16 bytes

Video

0334–03D7

4 bytes

Video

03DA

1 byte

Video

03D0–03DF

11 bytes

Available

03E0–03E7

8 bytes

Available

03E8–03EF

8 bytes

COM3 or COM4

03F0–03F5

6 bytes

Diskette channel 1

03F6

1 byte

Primary IDE channel command port

03F7 (Write)

1 byte

Diskette channel command

03F7, bit 7

1 bit

Diskette disk change channel

03F7, bits 6:0

7 bits

Primary IDE channel status port

03F8–03FF

8 bytes

COM1

0400–047F

128 bytes

Available

0480–048F

16 bytes

DMA channel high page registers

0490–0CF7

1912 bytes

Available

0CF8–0CFB

4 bytes

PCI configuration address register

0CFC–0CFF

4 bytes

PCI configuration date register

OPTn–400h

8 bytes

ECP port, LPTn base address + hex 400

0CF9

1 byte

Turbo and reset control register

0D00–FFFF

62207 bytes

Available

Appendix B. System address maps

49

DMA I/O address map

Table 34. DMA I/O address map
Address (hex)

Description

Bits

Byte pointer

0000

Channel 0, Memory Address register

00–15

Yes

0001

Channel 0, Transfer Count register

00–15

Yes

0002

Channel 1, Memory Address register

00–15

Yes

0003

Channel 1, Transfer Count register

00–15

Yes

0004

Channel 2, Memory Address register

00–15

Yes

0005

Channel 2, Transfer Count register

00–15

Yes

0006

Channel 3, Memory Address register

00–15

Yes

0007

Channel 3, Transfer Count register

00–15

Yes

0008

Channels 0–3, Read Status/Write Command
register

00–07

0009

Channels 0–3, Write Request register

00–02

000A

Channels 0–3, Write Single Mask register bits

00–02

000B

Channels, 0–3, Mode register (write)

00–07

000C

Channels 0–3, Clear byte pointer (write)

N/A

000D

Channels, 0–3, Master clear (writer)/temp (read)

00–07

000E

Channels 0–3, Clear Mask register (write)

00–03

000F

Channels 0–3, Write All Mask register bits

00–03

0081

Channel 2, Page Table Address register

00–07

0082

Channel 3, Page Table Address register

00–07

0083

Channel 1, Page Table Address register

00–07

0087

Channel 0, Page Table Address register

00–07

0089

Channel 6, Page Table Address register

00–07

008A

Channel 7, Page Table Address register

00–07

008B

Channel 5, Page Table Address register

00–07

008F

Channel 4, Page Table Address/Refresh register

00–07

00C0

Channel 4, Memory Address register

00–15

Yes

00C2

Channel 4, Transfer Count register

00–15

Yes

00C4

Channel 5, Memory Address register

00–15

Yes

00C6

Channel 5, Transfer Count register

00–15

Yes

00C8

Channel 6, Memory Address register

00–15

Yes

00CA

Channel 6, Transfer Count register

00–15

Yes

00CC

Channel 7, Memory Address register

00–15

Yes

50

PC 300 GL and 300 PL

Table 34. DMA I/O address map
Address (hex)

Description

Bits

Byte pointer

00CE

Channel 7, Transfer Count register

00–15

Yes

00D0

Channels 4–7, Read Status/Write Command
register

00–07

00D2

Channels 4–7, Write Request register

00–02

00D4

Channels 4–7, Write Single Mask register bit

00–02

00D6

Channels 4–7, Mode register (write)

00–07

00D8

Channels 4–7, Clear byte pointer (write)

N/A

00DA

Channels 4–7, Master clear (write)/temp (read)

00–07

00DC

Channels 4–7, Clear Mask register (write)

00–03

00DE

Channels 4–7, Write All Mask register bits

00–03

00DF

Channels 507, 8- or 16-bit mode select

00–07

PCI configuration space map
Table 35. PCI configuration space map
Bus number (hex)

Device number (hex)

Function number (hex) Description

00

00

00

VIA VT 82C694X (north bridge)

00

01

00

VIA VT 82C694X (north bridge)

00

02

00

VIA VT 82C596B (south bridge)

00

02

01

VIA VT 82C596B (south bridge)

00

02

02

VIA VT 82C596B (south bridge)

00

02

03

Intel 82371AB power management

00

0 x 12

00

ESS 1930 audio controller

01

00

00

S3Tio3D AGP video

00

0 x 10

N/A

Slot 1

00

0 x 0F

N/A

Slot 2

00

0 x 0E

N/A

Slot 3

Appendix B. System address maps

51

52

PC 300 GL and 300 PL

Appendix C. IRQ and DMA channel assignments
The following tables list the interrupt request (IRQ) and direct memory access (DMA
channel assignments.
Table 36. IRQ channel assignments
IRQ

System resource

NMI

Critical system error

SMI

System management interrupt - power management

0

Reserved (interval timer)

1

Reserved (keyboard)

2

Reserved, cascade interrupt from slave PIC

3

COM2

4

COM1

5

LPT2/audio (if present)

6

Diskette controller

7

LPT1

8

Real-time clock

9

ACPI

10

Available to user

11

Available to user

12

Mouse port

13

Reserved (math coprocessor)

14

Primary IDE (if present)

15

Secondary IDE (if present)

© Copyright IBM Corp. 2000

53

Table 37. DMA channel assignments
DMA channel

Data width

System resource

0

8 bits

Open

1

8 bits

Open

2

8 bits

Diskette drive

3

8 bits

Parallel port (for ECP or EPP)

4

--

Reserved (cascade channel)

5

16 bits

Open

6

16 bits

Open

7

16 bits

Open

54

PC 300 GL and 300 PL

Appendix D. Error codes
Complete lists of POST and beep error codes are provided in the PC300GL and PC
300PL User Guide and in the Hardware Maintenance Manual.

POST error codes
POST error messages appear when, during startup, POST finds problems with the
hardware or a change in the hardware configuration. POST error messages are 3-, 4-,
5-, 8-, or 12-character alphanumeric messages.

Beep codes
Beep codes are a series of tones in sets of two or three that sound when there are POST
errors. The beep pattern represents numeric values and provides further information
about the location of a potential problem.
The Hardware Maintenance Manual provides a complete list of beep codes.

© Copyright IBM Corp. 2000

55

56

PC 300 GL and 300 PL

Appendix E. Notices and Trademarks
This publication was developed for products and services offered in the U.S.A.
IBM may not offer the products, services, or features discussed in this document in
other countries. Consult your local IBM representative for information on the
products and services currently available in your area. Any reference to an IBM
product, program, or service is not intended to state or imply that only that IBM
product, program, or service may be used. Any functionally equivalent product,
program, or service that does not infringe any IBM intellectual property right may be
used instead. However, it is the user’s responsibility to evaluate and verify the
operation of any non-IBM product, program, or service.
IBM may have patents or pending patent applications covering subject matter
described in this document. The furnishing of this document does not give you any
license to these patents. You can send license inquiries, in writing, to:
IBM Director of Licensing
IBM Corporation
North Castle Drive
Armonk, NY 10504-1785
U.S.A.
The following paragraph does not apply to the United Kingdom or any country
where such provisions are inconsistent with local law: INTERNATIONAL
BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS"
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. Some states do not allow disclaimer of express or implied warranties in
certain transactions, therefore, this statement may not apply to you.
This information could include technical inaccuracies or typographical errors.
Changes are periodically made to the information herein; these changes will be
incorporated in new editions of the publication. IBM may make improvements
and/or changes in the product(s) and/or the program(s) described in this publication
at any time. without notice.
Any references in this publication to non-IBM Web sites are provided for convenience
only and do not in any manner serve as an endorsement of those Web sites. The
materials at those Web sites are not part of the materials for this IBM product, and use
of those Web sites is at your own risk.
The following terms are trademarks of the IBM Corporation in the United States or
other countries or both:
Alert on LAN
IBM
PC300
Wake on LAN
Pentium, Intel, and MMX are trademarks of Intel Corporation in the United States,
other countries, or both.
Microsoft and Windows are trademarks of Microsoft Corporation in the United States,
other countries, or both.

© Copyright IBM Corp. 2000

57

Other company, product, and service names may be trademarks or service marks of
others.

58

PC 300 GL and 300 PL

Bibliography
•

PCI BIOS Specification 2.0, Source: PCI Special
Interest Group

•

Plug and Play BIOS Specification 1.1, Source:
Microsoft Corporation;
http://www.microsoft.com/hwdev/

•
Advanced Power Management (APM) BIOS
Interface Specification 1.2, Source: Intel
Corporation

Plug and Play BIOS Specification for Windows
2000, Source: Microsoft Corporation

•

AT Attachment Interface with Extensions,
Source: American National Standard of
Accredited Standards Committee

Plug and Play BIOS Specification, Errata and
Clarifications 1.0, Source: Microsoft
Corporation

•

Universal Serial Bus Specifications, Source:
http://www.usb.org

•

Extended Capabilities Port: Specification Kit,
Source: Microsoft Corporation

•

Video Electronics Standards Association 1.2,
Source: http://www.vesa.org

•

Intel Microprocessor and Peripheral Component
Literature, Source: Intel Corporation

The following publications were reference materials
for IBM staff in developing the PC300 PL and 300
GL. This list of reference materials is provided for
convenience only. For further information on these
materials, contact the source corporation.

•

•

© Copyright IBM Corp. 2000

59

60

PC 300 GL and 300 PL

Index
A

D

K

Accelerated Graphics Port 8
ACPI 30
address maps
DMA I/O 50
input/output 48
PCI configuration 51
system memory 47
Adlib 10
ADSL modems 3
Advanced Configuration and Power
Interface 30
Advanced Power Management 30
AGP 8
APM 30
audio
connectors 10
controller 10
device drivers 10
subsystem 10

DDC 9
DIMM 6
direct memory access 7
diskette drive
connector 43
interface 11
DMA 7
DMA I/O address map 50
dual inline memory module 6
DVD-ROM 2
DVI-I
connector 34
interface 8

keyboard port connector 45
kilobytes viii

B
basic input/output system 29
beep error 55
bibliography 59
BIOS 29
bus
PCI 7
universal serial 7

C
CD-RW(Rewritable) 2
channel assignments
DMA 54
IRQ 53
chip set 5
clock 13
CMOS 13
compatibility
hardware 31
software 32
component current 26
Configuration/Setup Utility 30
connector
cables 17
diskette drive 43
DVI-I 34
IDE 42
keyboard 45
mouse port 45
parallel port 46
PCI 40
power supply 44
serial port 45
SVGA 33
system memory 34
USB 44
Wake on LAN 44
Connector Panel
desktop, tower 17
connector panel
desktop 18
tower 19
© Copyright IBM Corp. 2000

E
ECP 12
EEPROM 13
end-of-interrupt (EOI) 31
enhanced parallel port 12
EOI (end-of-interrupt) 31
EPP 12
error codes
alphanumeric 55
beep 55
complete lists 55
POST 55
Ethernet 13
expansion
adapters 13
PCI 13
slots 13
extended capabilities port 12

F
flash
EEPROM 13
update utility 30
frames per second 8

G
GB viii
gigabyte viii

H
hardware interrupts 31
hex viii

I
IDE

connector 42
input/output address map 48
integrated peripheral controller 11
interrupts
hardware 31
PCI 31
software 32

M
machine model byte 32
machine-sensitive programs 32
major features 1
megabyte viii
memory
connectors 34
system 5
microprocessor 5
MMX 5
mouse 12
mouse port connector 45

N
network
Eathernet 13
token ring 13

O
overview 1
overvoltage 27

P
PAL 8
parallel port 12
parallel port connector 46
PCI
connectors 40
interrupts 31
PCI configuration space map 51
PCI connector 40
pin assignments 33
Plug and Play 29
port
keyboard 12
mouse 12
parallel 12
ports
serial 11
POST 29
errors 55
Power
input, output 25
power
supply 27
supply connector 44
Power Supply 25
power-on self-test 29
publications, related vii

R
real-time clock 13
related publications vii
Remote Program Local 13
reserved viii

61

Rocker Switches 15

S
serial port connector 45
Serial ports 11
shutdown 27
SMID 1
software
CDs 30
compatibility 32
diagnostic program 30
system 29
SoundBlaster 10
specifications
desktop 21
tower 22
SPP 12
standard parallel port 12
SVGA monitor connector 33
system board 5, 14
system memory map 47

T
terminology viii
token ring 13

U
UART 11
Universal Serial Bus 7
USB
interface 7
port connectors 44

V
VGA 9
video
DVI-I 34
frames per second 8
graphic solutions 8
graphics array 9
modes 10
SVGA 33
Video Electronics Standards Association 9

W
Wake on LAN 3
Wake on LAN connector 44
Wake on Ring 3

62

PC 300 GL and 300 PL



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