Compaq Deskpro 4000N - Chapter 4 System Support; Introduction

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Technical Reference Guide

Compaq Deskpro 4000N and 4000S Personal Computers

First Edition - September1997

4-1

Chapter 4

SYSTEM SUPPORT

Chapter 4 SYSTEM SUPPORT

4.1

INTRODUCTION

This chapter covers subjects dealing with basic system architecture and covers the following

topics:

♦ PCI bus overview (4.2) page 4-2

♦ ISA bus overview (4.3) page 4-11

♦ System clock distribution (4.4) page 4-23

♦ Real-time clock and configuration memory (4.5) page 4-24

♦ I/O map and register accessing (4.6) page 4-41

♦ System management support (4.7) page 4-44

This chapter covers functions provided by off-the-shelf chipsets and therefore describes only basic

aspects of these functions as well as information unique to the Compaq Deskpro 4000 Personal

Computers. For detailed information on specific components, refer to the applicable

manufacturer’s documentation.

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