IBM PC 300GL Types 6275 Technical document

IBM
Technical Information Manual
PC 300GL (6272 and 6282)

IBM Technical Information Manual
PC 300GL (6272 and 6282)

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 55.
First Edition (October 1997)
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 October 1997. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Manual Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Chapter 1. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Major Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Other Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Wake on LAN .................................................. 2
Wake Up On Ring ................................................ 2
Network Enablement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter 2. System Board Features ...................................... 3
Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chipset Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
L2 Cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
System Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PCI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bus Master IDE Interface ........................................... 6
PCI to ISA Bridge ................................................ 6
USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Video Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cirrus CL-GD5446 Chip ............................................ 8
Video Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Input/Output Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Diskette Drive Support ............................................. 9
Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Parallel Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Keyboard and Mouse Ports .......................................... 10
Network Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
General Purpose I/O Ports ........................................... 11
Real-Time Clock and CMOS .......................................... 11
Flash EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Riser Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Physical Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 3. Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PC 300GL 6272 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
PC 300GL 6282 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 4. Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Power Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
PC 300GL 6272 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
PC 300GL 6282 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Component Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Output Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
 Copyright IBM Corp. October 1997 iii

Connector Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Chapter 5. System Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Plug and Play .................................................... 25
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Configuration/Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Advanced Power Management (APM) ...................................... 26
Flash Update Utility ................................................ 26
Diagnostic Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Chapter 6. System Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Hardware Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Diskette Drives and Controller ......................................... 29
Hard Disk Drives and Controller ........................................ 29
Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Software Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Machine-Sensitive Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Appendix A. Connector Pin Assignments .................................. 31
System Memory Connector ............................................ 32
IDE Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
USB Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Monitor Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Diskette Drive Connector ............................................. 35
Serial Port Connectors ............................................... 37
Parallel Port Connector .............................................. 37
Keyboard and Mouse Port Connectors ..................................... 38
ISA Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
PCI Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Wake on LAN and Modem/Ring Wakeup Connectors ............................. 43
Power Supply Connectors ............................................. 43
Appendix B. System Address Maps ..................................... 44
System Memory Map ............................................... 44
Input/Output Address Map ............................................ 45
DMA I/O Address Map ............................................... 48
Appendix C. IRQ and DMA Channel Assignments ............................ 50
Appendix D. Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
POST Error Codes ................................................. 52
Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Appendix E. Notices and Trademarks .................................... 55
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
iv Technical Information Manual

Figures
1. L2 Cache Characteristics .......................................... 4
2. L2 Cache Timings .............................................. 4
3. System Memory Configuration ....................................... 5
4. Serial Port Assignments .......................................... 9
5. Parallel Port Assignments ......................................... 10
6. Riser Card Characteristics ......................................... 12
7. J6 CMOS Clear/Password Jumper .................................... 14
8. Microprocessor Speed (SW1 1-4) ..................................... 14
9. Ethernet Disable/Enable (SW1 5) ..................................... 14
10. Diskette-Write Protection (SW1 6) ..................................... 14
11. Size (PC 300GL 6272) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
12. Weight (PC 300GL 6272) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13. Cables (PC 300GL 6272) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
14. Air Temperature (PC 300GL 6272) .................................... 17
15. Humidity (PC 300GL 6272) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
16. Heat Output (PC 300GL 6272) ...................................... 18
17. Electrical (PC 300GL 6272) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
18. Size (PC 300GL 6282) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
19. Weight (PC 300GL 6282) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
20. Cables (PC 300GL 6282) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
21. Air Temperature (PC 300GL 6282) .................................... 20
22. Humidity (PC 300GL 6282) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
23. Heat Output (PC 300GL 6282) ...................................... 20
24. Electrical (PC 300GL 6282) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
25. Power Input Requirements ......................................... 21
26. Power Output (85 Watt) ........................................... 22
27. Power Output (145 Watt) .......................................... 22
28. System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
29. Keyboard Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
30. Auxiliary Device Port ............................................ 23
31. ISA-Bus Adapters (Per Slot) ........................................ 23
32. PCI-Bus Adapters (Per Slot) ........................................ 23
33. Internal DASD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
34. 5.25-Inch Diskette Drive Reading, Writing, and Formatting Capabilities ............... 29
35. 3.5-Inch Diskette Drive Reading, Writing, and Formatting Capabilities ................ 29
36. System Memory Connector Pin Assignments .............................. 32
37. IDE Connector Pin Assignments ...................................... 34
38. USB Connector Pin Assignments ..................................... 35
39. Monitor Connector Pin Assignments ................................... 35
40. Diskette Drive Connector Pin Assignments ................................ 35
41. Serial Port Connectors Pin Assignments ................................. 37
42. Parallel Port Connector Pin Assignments ................................. 37
43. Keyboard and Mouse Connectors Pin Assignments .......................... 38
44. ISA Connector Pin Assignments ...................................... 39
45. PCI Connector Pin Assignments ...................................... 41
46. J27 Modem Ring ............................................... 43
47. J28 Wake on LAN .............................................. 43
48. Pin Assignments for Power Supply Connectors ............................. 43
49. System Memory Map ............................................ 44
50. I/O Address Map ............................................... 45
 Copyright IBM Corp. October 1997 v

51. DMA I/O Addresses ............................................. 48
52. IRQ Channel Assignments ......................................... 50
53. DMA Channel Assignments ........................................ 51
54. POST Error Codes ............................................. 52
55. Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
vi Technical Information Manual

Preface
This Technical Information Manual provides information for the IBM PC 300GL (6272 and 6282). It is
intended for developers who want to provide hardware and software products to operate with these IBM
computers and provides a more in-depth view of how these IBM computers work. Users of this publication
should have an understanding of computer architecture and programming concepts.
 Copyright IBM Corp. October 1997 vii

Related Publications
In addition to this manual, the following IBM publications provide information related to the operation of the
PC 300GL (6272 and 6282). 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 300GL
(6272 and 6282). Also, information on diagnosing and solving problems, how to get help and service,
and warranty issues is included.

Installing Options in Your Personal Computer
This publication contains instructions for installing options in the PC 300GL (6272 and 6282).

Understanding Your Personal Computer
This publication includes general information about using computers and detailed information about the
features of the PC 300GL (6272 and 6282).

PC 300 Systems (6272/6282) Compatibility Report
This publication contains information about compatible hardware and software for the PC 300GL
(6272 and 6282). This publication is available at http://www.us.pc.ibm.com/cdt .

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.us.pc.ibm.com/cdt .
viii Technical Information Manual