IBM PC 300PL Types 6862 Technical document

Technical Information Manual
PC 300PL Types 6862 and 6892
PC 300GL Types 6275 and 6285

IBM Technical Information Manual
PC 300PL Types 6862 and 6892
PC 300GL Types 6275 and 6285

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 70.
Preliminary Edition (June 1998)
The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with
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warranties in certain transactions, therefore, this statement may not apply to you.
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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 June 1998. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Terminology Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Chapter 1. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Major Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Other Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Wake on LAN .................................................. 3
Wake Up on Ring ................................................ 3
Alert on LAN ................................................... 3
Asset ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Network Enablement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2. System Board Features ...................................... 4
Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pentium II Microprocessor with MMX Technology ............................. 4
Chip Set Control .................................................. 4
L2 Cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PCI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
IDE Bus Master Interface ........................................... 6
PCI-to-ISA Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Video Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Integrated AGP S3 TRIO 3D SVGA (Super Video Graphics Array) ................... 8
Video Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Audio Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Audio Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Input/Output Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Diskette Drive Interface ............................................. 10
Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Parallel Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Keyboard and Mouse Ports .......................................... 11
Network Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Real-Time Clock and CMOS .......................................... 12
Flash EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Riser Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Physical Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
System Board, Types 6862/6892 and 6275/6285 .............................. 14
System Board Switches .............................................. 14
Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Riser Card, Type 6285/6892 .......................................... 16
Riser Card, Type 6275/6862 .......................................... 17
Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connector Panel, Types 6275/6862 ..................................... 18
Connector Panel, Types 6285/6892 ..................................... 18
Chapter 3. Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Desktop Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Copyright IBM Corp. June 1998 iii

Tower Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SCSI Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Cabling Requirements for Wake on LAN Adapters ............................. 23
Chapter 4. Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
PC 300GL Type 6275 and PC 300PL Type 6862 ............................. 24
PC 300GL Type 6285 and PC 300PL Type 6892 ............................. 25
Component Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Output Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Connector Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Chapter 5. System Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Plug and Play .................................................... 28
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Configuration/Setup Utility Program ....................................... 29
Advanced Power Management (APM) ...................................... 29
Advanced Configuration and Power Interface (ACPI) ........................... 29
Flash Update Utility Program ........................................... 29
Diagnostic Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Chapter 6. IBM System Management Tools ................................. 30
Components of IBM System Management Tools ............................... 30
DMI Service Provider .............................................. 30
DM BIOS Instrumentation ........................................... 30
IBM PC System Monitor (LM80) ....................................... 31
IBM AssetCare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
IBM Alert On LAN ................................................ 36
IBM SMART Reaction Client .......................................... 37
SMART Reaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
IBM SMART Reaction ............................................. 39
How SMART Reaction responds to a potential problem .......................... 39
SMART Reaction Restore process ...................................... 40
Critical data mirroring .............................................. 40
Intel LANDesk Client Manager ........................................ 41
Advanced Configuration and Power Interfaces (ACPI) ............................ 41
Wake on LAN .................................................... 41
Wake on LAN components ........................................... 42
How Wake on LAN works ........................................... 42
Definition of the Wake-up Frame ....................................... 42
IBM LANClient Control Manager version 2.0 (LCCM) ............................. 43
System deployment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Flashing the CMOS or BIOS .......................................... 45
Installing software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
LCCM New Client Scenario .......................................... 46
Low-level management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Chapter 7. System Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Hardware Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Diskette Drives and Controller ......................................... 50
Hard Disk Drives and Controller ........................................ 51
iv Technical Information Manual

Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Software Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Machine-Sensitive Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Appendix A. Connector Pin Assignments .................................. 52
AGP Monitor Port Connector ........................................... 52
Memory Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
ISA Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
PCI Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
IDE Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Diskette Drive Connector ............................................. 58
Power Supply Connector ............................................. 59
Modem/Ring Wakeup and Wake on LAN Connectors ............................. 59
Alert on LAN Connector .............................................. 60
RFID Connector (Asset ID) ............................................ 60
Fan Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
USB Port Connectors ............................................... 60
Mouse and Keyboard Port Connectors ..................................... 61
Serial Port Connectors ............................................... 61
Parallel Port Connector .............................................. 61
Monitor Port Connector .............................................. 63
Ethernet Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Appendix B. System Address Maps ..................................... 64
System Memory Map ............................................... 64
Input/Output Address Map ............................................ 64
DMA I/O Address Map ............................................... 66
PCI Configuration Space Map .......................................... 67
Appendix C. IRQ and DMA Channel Assignments ............................ 68
Appendix D. Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
POST Error Codes ................................................. 69
Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Appendix E. Notices and Trademarks .................................... 70
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Contents v

Figures
1. Memory Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Serial Port Assignments .......................................... 10
3. Parallel Port Assignments ......................................... 11
4. Riser Card Characteristics ......................................... 13
5. Microprocessor Speed (Switches 1-4) .................................. 14
6. ROM Recovery (Switch 5) ......................................... 15
7. System Board Ethernet Control (Switch 6) ................................ 15
8. Privileged Access Password Control (Switch 7) ............................. 15
9. Floppy Device Access (Switch 8) ..................................... 16
10. Clear CMOS Request Jumper (J9) .................................... 16
11. Power Input Requirements ......................................... 24
12. Power Output (145 Watt) .......................................... 24
13. Power Output (200 Watt) .......................................... 25
14. System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
15. Keyboard Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
16. Auxiliary Device Port ............................................ 26
17. ISA-Bus Adapters (Per Slot) ........................................ 26
18. PCI-Bus Adapters (Per Slot) either/or ................................... 26
19. USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
20. Internal DASD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
21. Enhanced Asset Information Area ..................................... 33
22. Device Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
23. Serialization Information Area Header .................................. 35
24. User Information Area Header ....................................... 35
25. Configuration Information Area Header .................................. 35
26. 5.25-Inch Diskette Drive Reading, Writing, and Formatting Capabilities ............... 50
27. 3.5-Inch Diskette Drive Reading, Writing, and Formatting Capabilities ................ 50
28. AGP Monitor Port Connector Pin Assignments ............................. 52
29. System Memory Connector Pin Assignments .............................. 52
30. ISA Connector Pin Assignments ...................................... 54
31. PCI Bus Connector ............................................. 56
32. PCI Connector Pin Assignments ...................................... 56
33. IDE Connector Pin Assignments ...................................... 58
34. Diskette Drive Connector Pin Assignments ................................ 58
35. Power Supply Connector Pin Assignments ................................ 59
36. J13 Modem/Ring Wakeup Connector Pin Assignments ........................ 59
37. J22 Wake on LAN Connector Pin Assignments ............................. 59
38. J12 Alert on LAN Connector Pin Assignments .............................. 60
39. J5 Asset ID Connector Pin Assignments ................................. 60
40. J14 Front Fan Connector Pin Assignments ............................... 60
41. USB Port Connector Pin Assignments .................................. 60
42. Mouse and Keyboard Port Connector Pin Assignments ........................ 61
43. Serial Port Connectors Pin Assignments ................................. 61
44. Parallel Port Connector Pin Assignments ................................. 61
45. Monitor Connector Pin Assignments ................................... 63
46. Ethernet Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
47. Pin Assignments for the Ethernet Connector ............................... 63
48. System Memory Map ............................................ 64
49. I/O Address Map ............................................... 64
50. DMA I/O Address Map ........................................... 66
vi Copyright IBM Corp. June 1998

51. IRQ Channel Assignments ......................................... 68
52. DMA Channel Assignments ........................................ 68
Figures vii

Preface
This Technical Information Manual provides information for the IBM PC 300PL (Types 6862 and 6892)
and PC 300GL (Types 6275 and 6285). 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.
viii Copyright IBM Corp. June 1998

Related Publications
In addition to this manual, the following IBM publications provide information related to the operation of the
IBM PC 300PL (Types 6862 and 6892) and PC 300GL (Types 6275 and 6285). To order 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.
Using Your Personal Computer
This publication contains information about configuring, operating, and maintaining the PC 300PL
(Types 6862 and 6892) and PC 300GL (Types 6275 and 6285). Also, included are warranty
information, instructions for diagnosing and solving problems, and information on how to obtain help
and service.
Installing Options in Your Personal Computer
This publication contains instructions for installing options in the PC 300PL (Types 6862 and 6892)
and PC 300GL (Types 6275 and 6285).
Understanding Your Personal Computer
This online document includes general information about using computers and detailed information
about the features of the PC 300PL (Types 6862 and 6892) and PC 300GL (Types 6275 and 6285).
About Your Software
This publication (provided only with computers that have IBM-preinstalled software) contains
information about the preinstalled software package.
Your Guide to IBM PC Information
This publication contains information about the Ready-to- Configure Utility Program CD that comes
with PC 300GL and PC 300PL computers. Also included are instructions for starting the CD.
Hardware Maintenance Manual
This publication contains information for trained service technicians. It is available at
http://www.pc.ibm.com/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 Using Your
Personal Computer .
Compatibility Report
This publication contains information about compatible hardware and software for the PC 300PL
(Types 6862 and 6892) and PC 300GL (Types 6275 and 6285). It is available at
http://www.pc.ibm.com/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.pc.ibm.com/us/cdt on the World Wide Web.
Adaptec SCSI Documentation
This documentation, which is provided with computer models that have an IBM-installed SCSI adapter,
includes information on configuring the adapter and instructions for installing and configuring SCSI
devices.
Preface ix

Terminology Usage
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. 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.
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 hex indicates a hexadecimal number. Also, 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
1024 bytes (2 10), 1 MB equals 1048576 bytes (2 20), and 1 GB equals 1073741824 bytes (230).
When expressing storage capacity, MB equals 1000 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.
xTechnical Information Manual

Chapter 1. System Overview
Chapter 1. System Overview
PC 300PL (Types 6862 and 6892) and PC 300GL (Types 6275 and 6285) are versatile products
designed to provide state-of-the-art computing power with room for future growth. Types 6275 and 6862
are desktop models, and Types 6285 and 6892 are tower models. Several variations are available for
each model.
Major Features
The major features are:
An Intel Pentium II microprocessor with MMX technology and 100 MHz Front Side Bus(FSB) and
512 KB of L2 cache with ECC
Up to 384 MB of system memory and optional memory with ECC
Integrated IDE bus master controller, ultra DMA/33 capable
Optional Ultra Wide SCSI adapter and diskdrive (on some models)
EIDE hard disk drive
System management
– Wake on LAN support
– Alert on LAN support (PL models only)
– DMI (Desktop Management Interface) BIOS and DMI software
– System management controller (PL models only)
– Integrated network protocols
– Enablement for remote administration
– Asset ID support (PL models only)
– IBM System Management Tools
32X Max 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
- Enhanced security for administrator password and startup sequence (PL models only)
– Chassis-intrusion detector (PL models only)
– Cover lock (in some models)
– U-bolt and security cabling (optional)
– Operating system security
– Diskette write-protection
Integrated AGP S3 TRIO 3D SVGA video controller with 2 MB of SDRAM video memory in PC 300GL
(Types 6275 and 6285) models and 4 MB of SDRAM video memory in PC 300PL (Types 6862 and
6892) models
1Variable read rate. Actual playback speed will vary and is often less than the maximum possible.
Copyright IBM Corp. June 1998 1

Chapter 1. System Overview
Audio adapter (supports SoundBlaster, Adlib, and Microsoft Windows Sound System applications) is
optional in PC 300GL (Types 6275 and 6285)
Integrated 16-bit, stereo audio controller and built-in high quality speaker in PC 300PL (Types 6862
and 6892) (supports SoundBlaster, Adlib, and Microsoft Windows Sound System applications)
Ethernet
– IBM 10/100 Mbit, PCI Ethernet adapter with Wake on LAN, optional on PC 300GL (Types 6275
and 6285)
– Integrated Ethernet controller and connector with Wake on LAN, standard on PC 300PL (Types
6862 and 6892)
Token Ring Adapter
– IBM PCI Token-Ring adapter with Wake on LAN is optional on both PC 300GL (Types 6275 and
6285) and PC 300PL (Types 6862 and 6892)
Adaptec SCSI adapter (some models only)
Expansion
– PC 300GL Type 6275 and PC 300PL Type 6862 (desktop models): Four drive bays, four
expansion slots (one ISA, two PCI, and one shared ISA/PCI)
– PC 300GL Type 6285 and PC 300PL Type 6862 (tower models): Six drive bays, six expansion
slots (three ISA and three PCI)
– AGP expansion slot in PC 300PL (Types 6862 and 6892) models only
ISA/PCI I/O-bus compatibility
Industry-standard compatibility
EnergyStar compliance
3.5-inch, 1.44 MB diskette drive
Input/Output Features
– One 25-pin, ECP/EPP parallel port
– Two 9-pin, UART serial ports
– Two 4-pin, USB ports
– One 6-pin, keyboard port (Windows 95-compatible)
– One 6-pin, mouse port
– One 15-pin, DDC2B-compliant monitor port
– Three 3.5 mm audio jacks (line out, line in, microphone)
2Technical Information Manual

Chapter 1. System Overview
Other Features
The following features may be supported by the PC 300GL (Types 6275 and 6285) and PC 300PL
(Types 6862 and 6892).
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 subsystem that supports
Wake on LAN.
The menu used for setting the Wake on LAN feature is found in the Configuration/Setup Utility Program.
Wake Up 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 the serial
port.
Modem Ring Detect: Use this option if the computer has an internal modem.
Alert on LAN
The PC 300PL are first equipped with Alert on LAN, a product of the
IBM/Intel Advanced Manageability Alliance. Alert on LAN can notify you when a system has been
tampered with or removed from the network. This new feature is part of the IBM AssetCare package,
which also includes other innovations such as SMART Reaction data protection software.
Asset ID
PC 300PL (Types 6862 and 6892) models are configurable to identify assets. The menu used for setting
the Asset ID feature is found in the Configuration/Setup Utility Program.
Network Enablement
PC 300PL computers PC 300PL (Types 6862 and 6892) are enabled to support management over a
network. The following is a list of functions that are supported:
Selectable startup sequence
Selectable Automatic Power On Startup Sequence
Update POST/BIOS from network
Wake on LAN
CMOS Save/Restore utility program
CMOS setup over LAN
Alert on LAN
Wake Up on Ring
Chapter 1. System Overview 3

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 6862/6892 and 6275/6285” on page 14.
Microprocessor
PC 300GL (Types 6275 and 6285) and PC 300PL (Types 6862 and 6892) come with an Intel Pentium II
microprocessor with MMX technology. The microprocessor, which has a heat sink attached, plugs directly
into a connector on the system board. For information on replacing a microprocessor or installing an
upgrade, refer to Installing Options in Your Personal Computer .
Pentium II Microprocessor with MMX Technology
The features of this microprocessor are as follows:
Optimization for 32-bit software
Operation at a lower voltage level than previous microprocessors
64-bit microprocessor data bus
66 and 100 MHz FSB
512 KB L2 cache with ECC
32-bit microprocessor address bus
Math coprocessor
MMX technology, which boosts the processing of graphic, video, and audio data
L2 cache integrated into the microprocessor
– 4-way set associative
– Nonblocking
– 50-percent processor speed performance increase over placement of L2 cache on the system
board
More information on these microprocessors is available at http://www.intel.com on the World Wide Web.
Chip Set Control
Two components, the Intel 440BX and PIIX4E, make up the chip set that 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
AGP bus
Enhanced DMA controller
RTC
4 Copyright IBM Corp. June 1998

Chapter 2. System-Board Features
L2 Cache
PC 300PL and PC 300GL computers are all equipped with a Pentium II microprocessor with MMX
technology and 512 KB of L2 cache. The L2 cache ECC function is automatically enabled when ECC
memory is installed. If nonparity memory is installed, the L2 cache ECC is disabled. (For information on
overriding these settings, refer to Chapter 4, Configuration/Setup Utility Program, in Using Your Personal
Computer .)
System Memory
The system memory interface is controlled by the 440BX chip set. Synchronous dynamic random access
memory (SDRAM) is standard.
The maximum amount of system memory is 384 MB. For memory expansion, the system board provides
three dual inline memory module (DIMM) connectors. DIMM sizes of 16MB, 32MB, 64MB, and 128MB
with a speed of 100 MHz are supported. The amount of memory preinstalled varies by model.
The following information applies to system memory:
SDRAM (synchronous dynamic random access memory), nonparity memory is standard.
Error correcting code (ECC) DRAM is also supported.
The maximum height of memory modules is 3.18 cm (1.25 in.).
Only PC 100 industry-standard, gold-lead DIMMs are supported.
A mix of ECC and nonparity types configures as nonparity.
For information on the pin assignments for the memory module connectors, see “Memory Connectors” on
page 52.
The following figure shows some possible configurations for the supported DIMMs.
Note: Values in the following table are represented in megabytes (MB).
Chapter 2. System Board Features 5

Chapter 2. System-Board Features
Figure 1. Memory Configurations
Total Memory (MB) Mem 0 Mem 1 Mem2
16 16 0 0
32 16 16 0
32 32 0 0
48 16 16 16
48 32 16 0
64 32 16 16
64 32 32 0
64 64 0 0
96 32 32 32
96 64 32 0
128 64 32 32
128 64 64 0
128 128 0 0
160 32 64 64
192 64 64 64
224 32 64 128
256 128 64 64
256 128 128 0
288 32 128 128
384 128 128 128
PCI Bus
The fully synchronous 33 MHz PCI bus originates in the chip set. Features of the PCI bus are:
Integrated arbiter with multi-transaction PCI arbitration acceleration hooks for high performance
graphics
Built-in PCI bus arbiter with support for up to five masters
Microprocessor-to-PCI memory write posting with 5-Dword-deep buffers
Converts back-to-back sequential microprocessor-to-PCI memory write to PCI burst write
PCI-to-DRAM posting 18 Dwords
PCI-to-DRAM up to 100+ MB/sec bandwidth
Multitransaction timer to support multiple short PCI transactions within one PCI ARB cycle
PCI 2.1 compliant
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 Intel PIIX4E functions as a bus master for the IDE interface. The chip set is 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 0–2 devices, ultra
DMA 33 transfers up to 33 Mbytes/sec.
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Chapter 2. System-Board Features
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.
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 64 and Figure 51 on page 68 (for IRQ assignments).
Two connectors are provided on the riser for the IDE interface. For information on the connector pin
assignments, see “IDE Connectors” on page 58.
PCI-to-ISA Bridge
On the system board, the Intel PIIX4E provides the interface between the peripheral component interface
(PCI) and industry standard architecture (ISA) 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.
The ISA bus operates at 8.25 MHz.
For the ISA bus, no resource assignments are given in the system memory or the DMA channels. For
information on resource assignments, see “Input/Output Address Map” on page 64 and Figure 51 on
page 68 (for IRQ assignments).
USB Interface
Universal serial bus (USB) technology is a standard feature of the computer. Using the chip set, the
system board provides the USB interface with two connectors. 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 MB/sec 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 devices
Support for concurrent operation of multiple devices
Suitable for different device bandwidths
Support for up to five meters length from host to hub or from 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 assignments for the USB interface, see “USB Port Connectors” on
page 60.
Chapter 2. System Board Features 7

Chapter 2. System-Board Features
Video Subsystem
The video subsystem on the system board includes the Integrated AGP S3 TRIO 3D SVGA (super video
graphics array) controller. The system board supports up to two SGRAM memory modules. Each module
contains 2 MB of SGRAM memory.
Integrated AGP S3 TRIO 3D SVGA (Super Video Graphics Array)
The Integrated AGP S3 TRIO 3D SVGA (super video graphics array) 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 are:
Plug and Play support
100 MHz SGRAM support
Advanced Power Management support
Color space conversion
Hardware scaling
Both the PC 300GL (Types 6275 and 6285) and the PC 300PL (Types 6862 and 6892) have an AGP bus
and are AGP 1.0 compliant. The S3 TRIO 3D video subsystem supports the VESA Display Data Channel
(DDC) standard 1.1 and uses DDC1 and DDC2B to determine optimal values during automatic monitor
detection.
For information on resource assignments, see Appendix B, “System Address Maps” on page 64 and
Appendix C, “IRQ and DMA Channel Assignments” on page 68.
The video subsystem provides a 15-pin monitor connector on the system board. For information on
connector pin assignments, see “Monitor Port Connector” on page 63.
Video Memory
The video memory interface is controlled by an S3 TRIO 3D graphics controller. The amount of SGRAM
shipped with the video subsystem is 4MB in the PC 300PL computers, and 2MB in the PC 300GL
computers.
The video memory module used in the PC 300PL (Types 6862 and 6892) is 2 MB 512K X32, with
100MHz SGRAM.
The video memory module used in the PC 300GL (Types 6275 and 6285) is 2 MB 256K X32, with
100MHz SGRAM. The PC 300GL (Types 6275 and 6285) can be upgraded from 2 MB SGRAM to 4 MB
SGRAM with a 2 MB SGRAM SODIMM. The SODIMM can be plugged into the SODIMM socket on the
system board. For details, see Installing Options in Your Personal Computer .
8Technical Information Manual