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6288
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IBM 6288, 6268, 6278 User Manual

Technical Information Manual
PC 300GL Types 6268, 6278, and 6288
Note
Before using this information and the product it supports, be sure to read the general information under Appendix E, “Notices and trademarks” on page 42.
First Edition (September 1999)
The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law: INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION “AS IS” WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time.
This publication was developed for products and services offered in the United States of America. IBM may not offer the products, services, or features discussed in this document in other countries, and the information is subject to change without notice. Consult your local IBM representative for information on the products, services, and features available in your area.
Requests for technical information about IBM products should be made to your IBM reseller or IBM marketing representative.
Copyright International Business Machines Corporation September 1999. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Terminology usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Chapter 1. System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Major features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Other features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Network support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Wake on LAN .................................................. 2
Wake on Ring .................................................. 2
Chapter 2. System board features ...................................... 3
Celeron microprocessor with MMX technology ................................. 3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
L2 cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chip set control ................................................... 3
System memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PCI bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
IDE bus master interface ............................................ 5
USB interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Low pin count (LPC) bus ............................................ 5
Video subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Graphics memory controller hub (Super Video Graphics Array) ..................... 6
Monitor support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Video memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Audio subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Super input/output controller ........................................... 10
Diskette drive interface ............................................. 10
Serial ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Parallel port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Keyboard and mouse ports .......................................... 11
Network connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Real-time clock and CMOS ............................................ 12
Flash EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Expansion adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Physical layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System board, types 6268, 6278, and 6288 ................................. 13
Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cable connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Connector panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 3. Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PC 300GL — desktop ............................................. 15
PC 300GL — tower ............................................... 16
Cabling requirements for Wake on LAN adapters ............................. 16
Chapter 4. Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Component outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Copyright IBM Corp. September 1999 iii
Output protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connector description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 5. System software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Plug and Play .................................................... 20
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Configuration/Setup Utility program ....................................... 21
Advanced Power Management (APM) ...................................... 21
Advanced Configuration and Power Interface ................................. 21
Flash update utility program ............................................ 21
Diagnostic program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Chapter 6. System compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Hardware compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Hardware interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Diskette drives and controller ......................................... 23
Hard disk drives and controller ........................................ 23
Software compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Software interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Machine-sensitive programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Appendix A. Connector pin assignments .................................. 25
Monitor connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Memory connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
PCI connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
IDE connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Diskette drive connector .............................................. 32
Power supply connector .............................................. 32
Modem/Ring Wakeup and Wake on LAN connectors ............................. 33
USB port connectors ................................................ 33
Mouse and keyboard port connectors ...................................... 33
Serial port connector ................................................ 34
Parallel port connector ............................................... 34
Appendix B. System address maps ..................................... 36
System memory map ............................................... 36
Input/output address map ............................................. 36
DMA I/O address map ............................................... 38
PCI configuration space map ........................................... 39
Appendix C. IRQ and DMA channel assignments ............................. 40
Appendix D. Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
POST error codes ................................................. 41
POST beep codes ................................................. 41
Appendix E. Notices and trademarks .................................... 42
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
iv Technical Information Manual
Figures
1. Memory configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Video subsystem resources ........................................ 6
3. Supported VGA video modes ....................................... 7
4. Supported Enhanced VGA video modes ................................. 7
5. Serial port assignments ........................................... 11
6. Parallel port assignments .......................................... 11
7. BIOS configuration jumper (J7A1) ..................................... 13
8. Power Input Requirements ......................................... 17
9. Power Output (145 Watt) .......................................... 17
10. System board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11. Keyboard port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
12. Auxiliary device port ............................................. 18
13. PCI-bus adapters (Per Slot) either/or ................................... 18
14. USB port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
15. Internal DASD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
16. Video port pin 9 ............................................... 18
17. 3.5-inch diskette drive reading, writing, and formatting capabilities .................. 23
18. Monitor port connector pin assignments ................................. 25
19. System Memory Connector Pin Assignments .............................. 25
20. System memory connector pin input/output ............................... 27
21. PCI bus connector .............................................. 29
22. PCI connector pin assignments ...................................... 29
23. IDE connector pin assignments ...................................... 31
24. Diskette Drive Connector Pin Assignments ................................ 32
25. Power Supply Connector Pin Assignments ................................ 32
26. J13 Modem/Ring Wakeup Connector Pin Assignments ........................ 33
27. J22 Wake on LAN Connector Pin Assignments ............................. 33
28. USB Port Connector Pin Assignments .................................. 33
29. Mouse port connector pin assignments .................................. 33
30. Keyboard port connector pin assignments ................................ 34
31. Serial Port Connector Pin Assignments .................................. 34
32. Parallel port connector pin assignments ................................. 34
33. System memory map ............................................ 36
34. I/O address map ............................................... 36
35. DMA I/O address map ........................................... 38
36. IRQ channel assignments ......................................... 40
37. DMA channel assignments ......................................... 40
Copyright IBM Corp. September 1999 v

Preface

This
Technical Information Manual
6288. It 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.
PC 300GL User Guide
This publication contains information about configuring, operating, and maintaining the PC 300GL, as well as installing new options in the PC 300GL. 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.
provides information for the IBM PC 300GL Types 6268, 6278, and
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/us/cdt/hmm.html on the World Wide Web, and it can also be ordered from IBM. To purchase a copy, refer to the "Getting Help, Service, and Information" section in
Guide
.
Compatibility Report
This publication contains information about compatible hardware and software for the PC 300GL. 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.

Terminology usage

Attention: The term
Use of reserved areas can cause compatibility problems, loss of data, or permanent damage to the hardware. When the contents of a register are changed, the state of the reserved bits must be preserved. When possible, read the register first and change only the bits that must be changed.
reserved
describes certain signals, bits, and registers that should not be changed.
PC 300GL User
In this manual, some signals are represented in a small, 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 use of the term “M” and “G“ are used, they typically indicate powers of 2, not powers of 10. For example, 1 KB equals 1024 bytes (210), 1 MB equals 1048576 bytes (220), and 1 GB equals 1073741824 bytes (230).
hex
indicates a hexadecimal number. Also, when numerical modifiers such as “K”,
vi  Copyright IBM Corp. September 1999
When expressing storage capacity, MB equals 1 000 KB (1024000). The value is determined by counting the number of sectors and assuming that every two sectors equals 1 KB.
Note: Depending on the operating system and other system requirements, the storage capacity available
to the user might vary.
Preface vii
viii Technical Information Manual

Chapter 1. System overview

Chapter 1. System overview
PC 300GL Types 6268, 6278, and 6288 are computer systems designed to provide state-of-the-art computing power with room for future growth.

Major features

The major features are:
An Intel Celeron microprocessor with MMX technology, with 128 KB L2 cache  Up to 512 MB of system memoryIntegrated IDE bus master controller, ATA 66 capableEIDE hard disk drive
System management
– Wake on LAN support – DMI (Desktop Management Interface) BIOS and DMI software – Integrated network protocols – Enablement for remote administration – Universal Management Agent (UMA) and UMA Plus – Wake on Ring support
IDE CD-ROM1 drive, 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 – U-bolt and security cabling (optional) – Operating system security
– Diskette write-protection
– Alert on LAN support
Integrated video controller with 4 MB of video display cache memoryIntegrated 16-bit, stereo Analog Devices, Inc. audio controller and built-in high quality speaker in all
models (supports SoundBlaster, DirectX, and Microsoft Windows Sound System applications)
Networking
– IBM 10/100 Mbits per second (Mbps), PCI Ethernet adapter with Wake on LAN in some models. – IBM PCI token ring adapter with Wake on LAN is optional.
Expansion: Four drive bays, four PCI expansion slotsPCI I/O bus compatibility
EnergyStar compliance
1
Variable read rate. Actual playback speed will vary and is often less than the maximum possible.
Copyright IBM Corp. September 1999
1
3.5-inch, 1.44 MB diskette drive
Input/output features
– One 25-pin, parallel port with Extended Capabilities Port (EPP)/Extended Parallel Port (EPP)
support
– Two 9-pin, Universal asynchronous receiver/transmitter (UART) serial ports – Two 4-pin, Universal Serial Bus (USB) ports – One 6-pin, keyboard port (PS/2 compatible) – One 6-pin, mouse port – One 15-pin, DDC2B-compliant monitor port – Three 3.5 mm audio jacks (line/headphone out, line in, microphone)

Other features

The following features might be supported by the PC 300GL.
Chapter 1. System overview
Network support
PC 300GL computers are enabled to support management over a network. The following is a list of supported functions:
Selectable startup sequenceSelectable Automatic Power On Startup SequenceUpdate POST/BIOS from networkWake on LANCMOS Save/Restore utility programCMOS setup over LANWake on Ring
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 PC over the LAN.
To use the Wake on LAN feature, the computer must be equipped with a network adapter that supports Wake on LAN. Some models come with a network adapter that supports Wake on LAN.
You can find the menu used for setting the Wake on LAN feature in the Configuration/Setup Utility program.
Wake on Ring
All models are configurable to turn on the computer after a ring is detected from an external or internal modem. The menu used for setting the Wake Up on Ring feature is found 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 serial port
1.
Modem Ring Detect: Use this option if the computer has an internal modem that supports the Wake
on Ring feature.
2 Technical Information Manual

Chapter 2. System board features

Chapter 2. System board features
This section includes information about system board features. For an illustration of the system board, see “System board, types 6268, 6278, and 6288” on page 13.

Celeron microprocessor with MMX technology

PC 300GL Types 6268, 6278, and 6288 comes with an Intel Celeron microprocessor. The microprocessor, which has a heat sink attached, plugs directly into a connector on the system board.
More information about this microprocessor is available at http://www.intel.com on the World Wide Web.
Features
The features of this microprocessor are as follows:
Optimization for 32-bit softwareOperation at a lower voltage level than previous microprocessors64-bit microprocessor data bus66 MHz FSB128 KB L2 cache integrated into the microprocessorCache operates at processor core speed
– 4-way set associative
– Nonblocking
32-bit microprocessor address bus
Math coprocessor
MMX technology, which boosts the processing of graphic, video, and audio data
L2 cache
The Celeron microprocessor provides 128 KB L2 cache. (For information on overriding settings, see Configuration/Setup Utility program, in
PC 300GL User Guide
.)

Chip set control

The Intel 810 chip set is the interface between the microprocessor and the following: Memory subsystem
PCI bus
IDE Bus Master connectionLow Pin Count (LPC) bus
USB ports SMBus
Enhanced DMA controllerReal-time clock (RTC)Audio coder/decoder (codec)
Copyright IBM Corp. September 1999 3
Chapter 2. System board features
System memory
The system memory interface is controlled by the Intel 82810 chip set. PCI 100 synchronous dynamic random access memory (SDRAM) is standard.
The maximum amount of system memory is 512 MB. For memory expansion, the system board provides two dual inline memory module (DIMM) connectors. 100 MHz DIMMs in sizes of 32 MB, 64 MB, 128 MB, and 256 MB are supported. The amount of memory preinstalled varies by model.
The following information applies to system memory:
SDRAM, nonparity, unbuffered, 3.3V memory is standard.The maximum height of memory modules is 6.35 cm (2.5 in.).Only PC 100 industry-standard, gold-contact DIMMs are supported.The PC 300GL does not support error correcting code (ECC).Auto-configure, auto-detect maximum system memory, using serial presence detect and configuration
interface (BIOS specific).
For information on the pin assignments for the memory module connectors, see “Memory connectors” on page 25.
The following figure shows some possible configurations for the supported DIMMs. Note: Values in the following table are represented in megabytes (MB).
Figure 1. Memory configurations
Total memory (MB) DIMM 0 DIMM 1
32 32 0 64 32 32 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
PCI bus
The fully synchronous 33 MHz PCI bus originates in the Intel 82801 chip. Features of the PCI bus are:
Integrated arbiter with multitransaction PCI arbitration acceleration hooksZero-wait-state, microprocessor-to-PCI write interface for high performance graphicsBuilt-in PCI bus arbiter with support for up to five mastersMicroprocessor-to-PCI memory write posting with 5-Dword-deep buffersConverts back-to-back sequential microprocessor-to-PCI memory write to PCI burst writePCI-to-DRAM posting 18 DwordsPCI-to-DRAM up to 100+ MB/sec bandwidthMultitransaction timer to support multiple short PCI transactions within one PCI ARB cyclePCI 2.2/2.3 compliant
4 Technical Information Manual
Chapter 2. System board features
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
Extensions
The PCI 2.1 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, ATA 66 transfers up to 66 Mbytes/sec.
The IDE devices receive their power through a four-position power cable containing +5, +12, and ground voltage. When adding devices to the IDE interface, one device is designated as the master device and another is designated 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 dependent on the mechanical package to a maximum of four.
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 36 and Figure 36 on page 40 (for IRQ assignments).
.
bus master
for the IDE interface is integrated into the I/O hub of the Intel 810 chipset. The chip set is
AT Attachment Interface with
USB interface
Universal serial bus (USB) technology is a standard feature of the computer. The system board provides the USB interface with two connectors integrated into the ICH (I/O controller hub) in the chip set. A USB-enabled device can attach to each connector, and if that device is a hub, multiple peripherals 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 peripherals. The USB is compliant with Universal Host Controller Interface Guide 1.0.
Features provided by USB technology include:
Support for hot-pluggable devicesSupport for concurrent operation of multiple devicesSuitable for different device bandwidthsSupport for up to five meters length from host to hub or from hub to hubGuaranteed bandwidth and low latencies appropriate for specific devicesWide range of packet sizesLimited power to hubs
For information on the connector pin assignments for the USB interface, see “USB port connectors” on page 33.
Low pin count (LPC) bus
On the system board, the Intel ICH1 bridge provides the interface between the peripheral component interface (PCI) and LPC buses. The chip set is used to convert PCI bus cycles to ISA bus cycles; the chip set also includes all the subsystems of the ISA bus, including two cascaded interrupt controllers, two DMA controllers with four 8-bit and three 16-bit channels, three counters equivalent to a programmable interval timer, and power management. The PCI bus operates at 33 MHz.
Chapter 2. System board features 5
Chapter 2. System board features

Video subsystem

The video subsystem includes the Intel 810 graphics controller integrated in the Graphics Memory Controller Hub (GMCH) and 4MB of 100MHz local graphics display cache SDRAM.
Graphics memory controller hub (Super Video Graphics Array)
The video subsystem uses system memory for display buffer, commands, and 3D textures on AGP-enabled operating systems via Dynamic Video Memory Technology (DVMT). The Intel 810 graphics controller drivers will adjust the memory footprint depending on available system memory, current desktop resolution, and presence of the display cache local memory. DVMT employs direct AGP and intelligent arbitration to dynamically allocate and deallocate memory for textures for applications requiring additional texture memory.
The operating system requires allocation of up to 1MB of system memory to support legacy VGA. System properties will display up to 1MB less than physical system memory available to the operating system.
The integrated graphics memory controller hub 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 of the features are:
2D and 3D hardware acceleration with hardware cursorIntegrated 230 MHz RAMDAC for up to 1600x1200 at 85Hz resolutionHardware Motion Compensation via Intel HWMC Software Development KitAdvanced Power Management (APM)Advanced Configuration and Power Interface (ACPI)On Now (Suspend to RAM)Plug and PlayVESA Display Data Channel version DDC2BGDI, Direct X, and OpenGL v1.1 Application Programming Interfaces
The integrated graphics memory controller subsystem supports the VESA Display Data Channel (DDC) standard 1.1 and uses DDC1 and DDC2B to determine optimal values during automatic monitor detection.
The video subsystem has the following resource assignments:
Figure 2. Video subsystem resources
Resource Assignment
ROM (hex) C0000–C7FFF (32KB) RAM (hex) A0000–BFFFF I/O (hex) 3B0–3BB, 3C0–3DF IRQ PCI interrupt #A (default assigned to ISA IRQ #1) DMA None
For further information on resource assignments, see Appendix B, “System address maps” on page 36 and Appendix C, “IRQ and DMA channel assignments” on page 40.
6 Technical Information Manual
Chapter 2. System board features
The PC 300GL supports the following video subsystem modes:
Figure 3. Supported VGA video modes
Mode (hex) Display Mode Screen Resolution Colors Refresh Rate
(Hz)
00 Text 40 x 25 characters B/W 70 01 Text 40 x 25 characters 16 70 02 Text 80 x 25 characters B/W 70 03 Text 80 x 25 characters 16 70 04 Graphics 320 x 200 pixels 4 70 05 Graphics 320 x 200 pixels 4 70 06 Text 640 x 200 pixels 2 70 07 Text 80 x 25 characters Mono 70 0D Graphics 320 x 200 pixels 16 70 0E Graphics 640 x 200 pixels 16 70 0F Graphics 640 x 350 pixels Mono 70 10 Graphics 640 x 350 pixels 16 70 11 Graphics 640 x 480 pixels 2 60 12 Graphics 640 x 480 pixels 16 60 13 Graphics 320 x 200 pixels 256 70
Figure 4 (Page 1 of 3). Supported Enhanced VGA video modes
Mode (hex) Display Mode Screen Resolution Colors Refresh Rate
(Hz)
100 Graphics 640x400 8 70 101 Graphics 640x480 8 60 101 Graphics 640x480 8 70 101 Graphics 640x480 8 72 101 Graphics 640x480 8 75 101 Graphics 640x480 8 85 102 Graphics 800x600 4 60 102 Graphics 800x600 4 72 102 Graphics 800x600 4 75 102 Graphics 800x600 4 85 103 Graphics 800x600 8 60 103 Graphics 800x600 8 70 103 Graphics 800x600 8 75 103 Graphics 800x600 8 85 105 Graphics 1024x768 8 60 105 Graphics 1024x768 8 70 105 Graphics 1024x768 8 75 105 Graphics 1024x768 8 85 107 Graphics 1280x1024 8 60 107 Graphics 1280x1024 8 70 107 Graphics 1280x1024 8 72
Chapter 2. System board features 7
Figure 4 (Page 2 of 3). Supported Enhanced VGA video modes
Mode (hex) Display Mode Screen Resolution Colors Refresh Rate
(Hz)
107 Graphics 1280x1024 8 75 107 Graphics 1280x1024 8 85 108 Graphics NS 70 109 Text 132x25 chars 4 70 10A Text 132x43 chars 4 70 10B Text 132x50 chars 4 70 10C Text 132x60 chars 4 70 110 Graphics 640x480 15 60 110 Graphics NS 72 110 Graphics 640x480 15 75 110 Graphics 640x480 15 85 111 Graphics 640x480 16 60 111 Graphics 640x480 16 70 111 Graphics 640x480 16 72 111 Graphics 640x480 16 75 111 Graphics 640x480 16 85 112 Graphics 640x480 24 60 112 Graphics 640x480 24 70 112 Graphics 640x480 24 72 112 Graphics 640x480 24 75 112 Graphics 640x480 24 85 113 Graphics 800x600 15 56 113 Graphics 800x600 15 60 113 Graphics NS 72 113 Graphics 800x600 15 75 113 Graphics 800x600 15 85 114 Graphics NS 56 114 Graphics 800x600 16 60 114 Graphics 800x600 16 70 114 Graphics 800x600 16 72 114 Graphics 800x600 16 75 114 Graphics 800x600 16 85 115 Graphics NS 56 115 Graphics 800x600 24 60 115 Graphics 800x600 24 70 115 Graphics 800x600 24 72 115 Graphics 800x600 24 75 115 Graphics 800x600 24 85 116 Graphics 1024x768 15 60 116 Graphics NS 70 116 Graphics 1024x768 15 75 116 Graphics 1024x768 15 85
Chapter 2. System board features
8 Technical Information Manual
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