Personal Computer Maintenance & Service Guide
Table Of Contents
- NOTICE
- CONTENTS
- ABOUT THIS GUIDE
- PRODUCT DESCRIPTION
- SPARE PARTS
- REMOVAL AND REPLACEMENT PRELIMINARIES
- REMOVAL AND REPLACEMENT PROCEDURES
- 4.1 Disassembly Sequence Chart
- 4.2 Disassembly Preparation
- 4.3 Feet Installation
- 4.4 Logo Plate
- 4.5 Cable Lock
- 4.6 Access Panel
- 4.7 Front Bezel
- 4.8 Power Button
- 4.9 Subpanel and Bezel Blanks
- 4.10 Power Switch
- 4.11 Mass Storage Devices
- 4.12 Removing the Drivelocks
- 4.13 Expansion Boards
- 4.14 Board Guide
- 4.15 System Memory
- 4.16 AGP Graphics Board (440BX)
- 4.17 Processor Components
- 4.18 System Board
- 4.19 Internal Speaker
- 4.20 Lithium Battery
- 4.21 Fan Assembly
- 4.22 Power Supply
- 4.23 Converting a Desktop to a Minitower
- 4.24 Converting a Minitower to a Desktop
- CONNECTORS, JUMPERS, AND SWITCHES
- SPECIFICATIONS
- SERVICE NOTES
- INDEX
6-4 Specifications
I/O
Continued
I/O Address (Hex) System Function (Shipping Configuration)
0FA Unused
0FB 483/PGL Configuration Unlock
0FC - 0FF Unused
100 - 12F Unused
130 - 131 Unused
132 - 16F Unused
170 - 177 Reserved
15C - 15D Super I/O Index/Data Register
178 - 1EF Unused
1F0 - 1F7 Fixed Disk Controller
1F8 - 1FF Unused
200 Unused
201 Unused
202 - 21F Unused
220 - 22F Audio (Alternate = 240 - 24F, 260 - 26F, or 280 - 28F)
230 - 277 Unused
278 - 27F Reserved Parallel Port
280 - 2E7 Unused
2E8 - 2EF Reserved Serial Port
2F0 - 2F7 Unused
2F8 - 2FF Reserved Serial Port
300 - 317 Unused
318 - 319 Unused
31A - 36F Unused
370 - 377 Reserved
378 - 37F Parallel Port (Primary)
380 - 387 Unused
388 - 38B Unused
38C - 397 Unused
39A - 3AF Unused
3B0 - 3BB MDA, EGA/VGA
3BC - 3BF Reserved (Parallel Port)
3C0 - 3DF EGA/VGA
3E0 - 3E7 Unused
3E8 - 3EF Reserved (Serial Port)
3F0 - 3F7 Diskette Controller
3F8 - 3FF Serial Port (Primary)