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
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.
Note:
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.
v
Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Chapter 1.System Overview . . . . . . . . . . . . 1
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CD-RW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DVD-ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ADSL modems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Wake on LAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Wake on Ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
Chapter 3.Physical specifications . . . . . . 21
PC 300 GL and PL desktop . . . . . . . . . . . . . . . . . . . . . . . 21
PC300 PL and GL tower. . . . . . . . . . . . . . . . . . . . . . . . . . 22
Chapter 4.Power supply . . . . . . . . . . . . . . 25
Power input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Power output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Component outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Output protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Connector description . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Chapter 5.System software. . . . . . . . . . . . 29
BIOS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Plug and Play. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Configuration/Setup Utility program . . . . . . . . . . . . . . 30
Advanced Power Management (APM) . . . . . . . . . . . . . 30
Advanced Configuration and Power Interface (ACPI) 30
Flash update utility program. . . . . . . . . . . . . . . . . . . . . . 30
Diagnostic program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Chapter 6.System compatibility . . . . . . . . 31
Hardware compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Hardware interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Software compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Software interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Machine-sensitive programs. . . . . . . . . . . . . . . . . . . . 32
Appendix A. Connector pin assignments 33
SVGA monitor connector . . . . . . . . . . . . . . . . . . . . . . . . . 33
DVI-I monitor connector . . . . . . . . . . . . . . . . . . . . . . . . . 34
System memory connector. . . . . . . . . . . . . . . . . . . . . . . . 34
PCI connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
IDE connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Diskette drive connector. . . . . . . . . . . . . . . . . . . . . . . . . . 43
Power supply connector. . . . . . . . . . . . . . . . . . . . . . . . . . 44
Wake on LAN connectors. . . . . . . . . . . . . . . . . . . . . . . . . 44
USB port connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Mouse and keyboard port connectors . . . . . . . . . . . . . . 45
Serial port connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Parallel port connector . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Appendix B. System address maps. . . . . 47
System memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Input/output address map . . . . . . . . . . . . . . . . . . . . . . . 48
DMA I/O address map. . . . . . . . . . . . . . . . . . . . . . . . . . . 50
PCI configuration space map. . . . . . . . . . . . . . . . . . . . . . 51
Appendix C. IRQ and DMA channel
assignments. . . . . . . . . . . . . . . . . . . . . . . 53
Appendix D. Error codes . . . . . . . . . . . . . 55
POST error codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Beep codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Appendix E. Notices and Trademarks . . . 57
Bibliography. . . . . . . . . . . . . . . . . . . . . . . . 59
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
vi
© Copyright IBM Corp. 2000 vii
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.
viii PC 300 GL and 300 PL
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: Depending on the operating system and other requirements, the storage
capacity available to you might vary.
© Copyright IBM Corp. 2000 1
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.
2 PC 300 GL and 300 PL
— 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.
Chapter 1. System Overview 3
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.
4 PC 300 GL and 300 PL
© Copyright IBM Corp. 2000 5
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.
6 PC 300 GL and 300 PL
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)
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
Chapter 2. System board features 7
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
8 PC 300 GL and 300 PL
• 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:
• 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)
Chapter 2. System board features 9
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.
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.
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
10 PC 300 GL and 300 PL
The PC 300GL personal computer types 6563, 6564, and 6574 and the PC 300PL type
6565 support the following video subsystem modes.
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:
•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.
Table 3. Supported VGA video modes
Mode
(Hex) Display
mode Screen resolution Colors Buffer
start (hex)
Dot
clock
(MHz)
Sweep
rate
(kHz)
Refresh
rate
(Hz)
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
Chapter 2. System board features 11
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.
12 PC 300 GL and 300 PL
The following figure shows the serial port assignments in the configuration.
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.
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.
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
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
Chapter 2. System board features 13
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.
14 PC 300 GL and 300 PL
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: A diagram of the system board, including switch and jumper settings, is
attached to the underside of the computer cover.
Chapter 2. System board features 15
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.
Þ1ÝMicroprocessor Þ13ÝSmall rocker switch
Þ2ÝDIMM 0 Þ14ÝBattery
Þ3ÝDIMM 1 Þ15ÝChassis intrusion detection connector
Þ4ÝFan connector Þ16ÝWake on LAN connector
Þ5ÝPower connector Þ17ÝAlert on LAN connector
Þ6ÝSwitch/LED connector Þ18ÝCD-ROM, CD-RW, or DVD drive connector
Þ7ÝRFID connector (some models) Þ19ÝPCI adapter slot 1
Þ8ÝPrimary EIDE connector Þ20ÝPCI adapter slot 2
Þ9ÝSecondary EIDE connector Þ21ÝPCI adapter slot 3 (for Alert on LAN adapter)
Þ10ÝDiskette drive connector Þ22ÝChassis speaker connector
Þ11ÝFan connector Þ23ÝAGP adapter slot
Þ12ÝLarge rocker switch (some models)
16 PC 300 GL and 300 PL
Table 6. Large rocker switch settings
Microprocessor
speed 12345 678
100
150
200
Off Off On Off Off Off Off Off
133
200
266
On On On On Off Off Off Off
133
200
266
OffOffOffOffOff OffOffOff
166
250
333
On On On Off Off Off Off Off
200
300
400
On On Off On Off Off Off Off
233
350
466
On On Off Off Off Off Off Off
266
400
533
On Off On On Off Off Off Off
300
450
600
On Off On Off Off Off Off Off
333
500
666
On Off Off On Off Off Off Off
366
500
733
On Off Off Off Off Off Off Off
400
600
800
Off On On On Off Off Off Off
433
650
866
Off On On Off Off Off Off Off
Chapter 2. System board features 17
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.
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.
466
700
933
Off On Off On Off Off Off Off
500
750
1000
Off On Off Off Off Off Off Off
533
800
1066
Off Off On On Off Off Off Off
Reserved Off Off Off On Off Off Off Off
Table 7. Small rocker switch settings
Function On
Diskette write-protect Switch 1
Clear CMOS Switch 2
Table 6. Large rocker switch settings
Microprocessor
speed 12345 678
18 PC 300 GL and 300 PL
The following illustration shows the connector panel for the desktop model.
USB 1 Parallel
Microphone
Headphone/
Line Out
Line In
Keyboard
Mouse
Serial 1
Serial 2
USB 2
1
1
2
2
DVI Monitor
SVGA Monitor
Chapter 2. System board features 19
The following illustration shows the connector panel for the tower model.
1
1
2
2
USB 1
USB 2
Serial 2
Mouse
Keyboard
Serial 1
Parallel
Microphone
Line In
Headphone/
Line Out
DVI Monitor
SVGA Monitor
20 PC 300 GL and 300 PL
© Copyright IBM Corp. 2000 21
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):
– Minimum configuration as shipped: 0.08 kVA
– Maximum configuration: 0.51 kVA
22 PC 300 GL and 300 PL
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):
– Idle: 4.4 bels
– Operating: 4.9 bels
Note: 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:
Chapter 3. Physical specifications 23
– 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):
– Minimum configuration as shipped: 0.08 kVA
– Maximum configuration: 0.51 kVA
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: 40 dBA
— At bystander position-1 meter (3.3 ft):
– Idle: 4.4 bels
– Operating: 4.9 bels
Note: 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.
24 PC 300 GL and 300 PL
© Copyright IBM Corp. 2000 25
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.
Power output
The following figures show the power supply output of all the connectors, including
the system board, DASD, PCI, and auxiliary outputs.
The total combined 3.3 V and 5 V power must not exceed 100 watts.
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
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
26 PC 300 GL and 300 PL
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.
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 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%
Table 11. Keyboard port
Supply voltage Maximum current Tolerance
+5.0 V dc 275 mA +5.0% to -4.0%
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%
Table 14. USB port
Supply voltage Maximum current Tolerance
+5.0 V dc 500 mA +5.0%to -4.0%
Table 15. Internal DASD
Supply voltage Maximum current Tolerance
+5.0 V dc 1400 mA +5.0% to -5.0%
Chapter 4. Power supply 27
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.
+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%
Table 15. Internal DASD
Supply voltage Maximum current Tolerance
28 PC 300 GL and 300 PL
© Copyright IBM Corp. 2000 29
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.
30 PC 300 GL and 300 PL
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 PC-
Doctor. 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.
© Copyright IBM Corp. 2000 31
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
32 PC 300 GL and 300 PL
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).
© Copyright IBM Corp. 2000 33
Appendix A. Connector pin assignments
The following figures show the pin assignments for various system board connectors.
SVGA monitor connector
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
4Monitor 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
51
10 6
15 11
34 PC 300 GL and 300 PL
DVI-I monitor connector
System memory connector
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
1C1 C2
C3 C5 C4
1
85
84
168
Appendix A. Connector pin assignments 35
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
36 PC 300 GL and 300 PL
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
Table 20. System memory connector pin assignments
Pin x64 nonparity x72 ECC Pin x64 nonparity x72 ECC
Appendix A. Connector pin assignments 37
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
Table 20. System memory connector pin assignments
Pin x64 nonparity x72 ECC Pin x64 nonparity x72 ECC
38 PC 300 GL and 300 PL
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
Table 21. System memory connector pin input/output
Pin Signal name I/O Pin Signal name I/O
Appendix A. Connector pin assignments 39
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
Table 21. System memory connector pin input/output
Pin Signal name I/O Pin Signal name I/O
40 PC 300 GL and 300 PL
PCI connectors
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
B2
A1
A2
B62
A62
B1
Appendix A. Connector pin assignments 41
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
Table 22. PCI connector pin assignments
Pin Signal I/O Pin Signal I/O
42 PC 300 GL and 300 PL
IDE connectors
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
1
240
39
Appendix A. Connector pin assignments 43
Diskette drive connector
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 O19GroundN/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
1
234
33
44 PC 300 GL and 300 PL
Power supply connector
Wake on LAN connectors
USB port connectors
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
Table 26. J14 Wake on LAN connector pin assignments
Pin Description
1 +5 V AUX
2Ground
3 Internal Wake on LAN
Table 27. USB port connector pin assignments
Pin Signal
1VCC
2-Data
3+Data
4Ground
4
3
2
1
Appendix A. Connector pin assignments 45
Mouse and keyboard port connectors
Serial port connector
Table 28. Mouse port connector pin assignments
Pin Signal I/O Pin Signal I/O
1DataI/O4+5 V dcN/A
2 Reserved I/O 5 Clock I/O
3 Ground N/A 6 Reserved N/A
Table 29. Keyboard port connector pin assignments
Pin Signal I/O 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
3GroundN/A6Mouse clockN/A
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
6
4
21
3
5
15
69
46 PC 300 GL and 300 PL
Parallel port connector
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
13 1
25 14
© Copyright IBM Corp. 2000 47
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
48 PC 300 GL and 300 PL
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
Appendix B. System address maps 49
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
Table 33. I/O address map
Address (hex) Size Description
50 PC 300 GL and 300 PL
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
Appendix B. System address maps 51
PCI configuration space map
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
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
Table 34. DMA I/O address map
Address (hex) Description Bits Byte pointer
52 PC 300 GL and 300 PL
© Copyright IBM Corp. 2000 53
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
3COM2
4COM1
5 LPT2/audio (if present)
6 Diskette controller
7LPT1
8 Real-time clock
9ACPI
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)
54 PC 300 GL and 300 PL
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)
516 bitsOpen
616 bitsOpen
716 bitsOpen
© Copyright IBM Corp. 2000 55
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.
56 PC 300 GL and 300 PL
© Copyright IBM Corp. 2000 57
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 NON-
INFRINGEMENT, 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.
58 PC 300 GL and 300 PL
Other company, product, and service names may be trademarks or service marks of
others.
© Copyright IBM Corp. 2000 59
Bibliography
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.
•Advanced Power Management (APM) BIOS
Interface Specification 1.2, Source: Intel
Corporation
•AT Attachment Interface with Extensions,
Source: American National Standard of
Accredited Standards Committee
•Extended Capabilities Port: Specification Kit,
Source: Microsoft Corporation
•Intel Microprocessor and Peripheral Component
Literature, Source: Intel Corporation
•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/
•Plug and Play BIOS Specification for Windows
2000, Source: Microsoft Corporation
•Plug and Play BIOS Specification, Errata and
Clarifications 1.0, Source: Microsoft
Corporation
•Universal Serial Bus Specifications, Source:
http://www.usb.org
•Video Electronics Standards Association 1.2,
Source: http://www.vesa.org
60 PC 300 GL and 300 PL
© Copyright IBM Corp. 2000 61
Index
A
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
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
D
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
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
flashEEPROM 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
K
keyboard port connector 45
kilobytes viii
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
portkeyboard 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
62 PC 300 GL and 300 PL
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
USBinterface 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 Associ-
ation 9
W
Wake on LAN 3
Wake on LAN connector 44
Wake on Ring 3

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