Compaq 4000N User Manual

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Summary of Contents

Page 1 - Reference

TechnicalReferenceGuideforCompaq Deskpro 4000N and 4000S Personal Computers

Page 2

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition – September 1997viiiLIST OF FIGURESFIGURE 2–1. COMPAQ

Page 3

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-105.3 DISKETTE DRIVE INTERFACET

Page 4 - Technical Reference Guide

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 5 - TABLE OF CONTENTS

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-125.3.1.2 Diskette Drive Interf

Page 6

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 7

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-145.3.2 DISKETTE DRIVE CONNECTO

Page 8

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 9

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-165.4.2 SERIAL INTERFACE PROGRA

Page 10 - LIST OF FIGURES

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 11 - LIST OF TABLES

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-18Baud Rate Divisor Latch Regist

Page 12

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 13 - INTRODUCTION

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition

Page 14

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-20Line Status Register, I/O Port

Page 15 - Continued

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 16

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-225.5.2 ENHANCED PARALLEL PORT

Page 17

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 18

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-245.5.4.2 Parallel Interface Co

Page 19 - SYSTEM OVERVIEW

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 20 - 2.2.1 STANDARD FEATURES

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-26FIFO Register, I/O Port 7F8h (

Page 21 - 2.2.3 OPTIONS

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 22 - 2.3.1 CABINET LAYOUT

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-285.6 KEYBOARD/POINTING DEVICE

Page 23

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 24 - 2.3.2 CHASSIS LAYOUT

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition – September 1997xTABLE 5–12. SERIAL INTERFACE CONTROL

Page 25 - 2.3.3 SYSTEM BOARD LAYOUT

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-305.6.2 POINTING DEVICE INTERFA

Page 26 - 2.4 SYSTEM ARCHITECTURE

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 27

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-32Table 5-18 lists the commands

Page 28 - 2.4.2 MEMORY

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 29 - 2.4.4 MASS STORAGE

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-345.6.4 KEYBOARD/POINTING DEVIC

Page 30 - 2.4.7 GRAPHICS SUBSYSTEM

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 31 - 2.5 SPECIFICATIONS

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-365.7.1 NIC CONFIGURATION/CONTR

Page 32

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 33

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-385.8.2 USB CONTROLThe USB is c

Page 34 - Chapter 2 System Overview

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 1997

Page 35 - MEMORY SUBSYSTEM

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 199

Page 36

Chapter 6 Graphics Subsystem Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19976-2GraphicsMemory BusRGB DataMonitor(63

Page 37 - 3.2.1.1 MMX Technology

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 1997

Page 38

Chapter 6 Graphics Subsystem Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19976-46.2.3 S3 TRIO64V2/GX GRAPHICS SUBS

Page 39 - 3.2.4 SYSTEM MEMORY

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 1997

Page 40

Chapter 6 Graphics Subsystem Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19976-66.2.5 CONNECTORSThe graphics subsys

Page 41

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 42

Chapter 7 Power and Signal Distribution Compaq Deskpro 4000N and 4000S Personal Computers First Edition - September 19977-27.2.1 POWER SUPPLY ASSE

Page 43 - SYSTEM SUPPORT

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 44 - 4.2 PCI BUS OVERVIEW

Chapter 7 Power and Signal Distribution Compaq Deskpro 4000N and 4000S Personal Computers First Edition - September 19977-47.3 POWER DISTRIBUTION7

Page 45 - 4.2.1 PCI CONNECTOR

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 46

Chapter 1 Introduction Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19971-21.2 NOTATIONAL CONVENTIONS1.2.1 VALUESHexa

Page 47 - 4.2.3.2 Configuration Cycles

Chapter 7 Power and Signal Distribution Compaq Deskpro 4000N and 4000S Personal Computers First Edition - September 19977-67.4 SIGNAL DISTRIBUTION

Page 48

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 49

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-28.2 BOOT FUNCTIONSThe system supports new sys

Page 50

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 51 - 4.2.5 PCI INTERRUPT MAPPING

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-48.3.2.1 INT 15, AX=E841h, BL=00h - Set CMOS D

Page 52 - 4.2.6 PCI CONFIGURATION

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 53 - 4.3 ISA BUS OVERVIEW

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-6To support Windows NT an additional table to t

Page 54 - 4.3.1 ISA CONNECTOR

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 55 - 4.3.2 ISA BUS TRANSACTIONS

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-8Timeout Counter Record (Video Screensave), SIT

Page 56

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 57 - 4.3.3 DIRECT MEMORY ACCESS

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 199

Page 58 - 4.3.3.1 Page Registers

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-10Memory Module Information Record, SIT Record

Page 59

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 60 - 4.3.4.1 Maskable Interrupts

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-128.4.3 TEMPERATURE SENSORA temperature sensor

Page 61

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 62 - NMI- Generation

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-14ENTRY: AX = E827hBH = 02hRETURN: CF = 0 (S

Page 63 - SMI- Generation

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 64 - 4.3.6 ISA CONFIGURATION

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-168.4.7 ACCESSING CMOS FEATURE BITSThe BIOS fu

Page 65

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 66

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-188.6 POWER MANAGEMENT SUPPORTThe Compaq Deskp

Page 67

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - Septembe

Page 68

Chapter 1 Introduction Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19971-4Table 1-1. Acronyms and Abbreviations Cont

Page 69

Chapter 8 BIOS ROM Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19978-20This page is intentionally blank.

Page 70

Technical Reference Guide Compaq Personal ComputersChang

Page 71

Appendix A Error Messages and Codes Compaq Personal ComputersChanged - September 1997A-2A.4 POWER-ON SELF TEST (POST) MESSAGESTable A–3. Power-

Page 72

Technical Reference Guide Compaq Personal ComputersChang

Page 73

Appendix A Error Messages and Codes Compaq Personal ComputersChanged - September 1997A-4A.6 MEMORY ERROR MESSAGES (2xx-xx)Table A–5. Memory Err

Page 74

Technical Reference Guide Compaq Personal ComputersChang

Page 75

Appendix A Error Messages and Codes Compaq Personal ComputersChanged - September 1997A-6A.10 DISKETTE DRIVE ERROR MESSAGES (6xx-xx)Table A–9. D

Page 76

Technical Reference Guide Compaq Personal ComputersChang

Page 77

Appendix A Error Messages and Codes Compaq Personal ComputersChanged - September 1997A-8A.13 HARD DRIVE ERROR MESSAGES (17xx-xx)Table A–12. Har

Page 78

Technical Reference Guide Compaq Personal ComputersChang

Page 79

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 199

Page 80

Appendix A Error Messages and Codes Compaq Personal ComputersChanged - September 1997A-10A.16 AUDIO ERROR MESSAGES (3206-xx)Table A–15. Audio E

Page 81

Technical Reference Guide Compaq Personal ComputersChang

Page 82 - Chapter 4 System Support

Appendix A Error Messages and Codes Compaq Personal ComputersChanged - September 1997A-12A.20 CEMM PRIVILEDGED OPS ERROR MESSAGESTable A–19. CE

Page 83 - 4.6.1 SYSTEM I/O MAP

Technical Reference Guide Compaq Personal ComputersOriginal - Ju

Page 84

Appendix B ASCII Character SetCompaq Personal ComputersOriginal - July 1996B-2Table B-1. ASCII Code Set (Continued)Dec Hex Symbol Dec Hex Symbol Dec

Page 85

Technical Reference Guide Compaq Personal ComputersChange

Page 86

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-2KeyboardInterface(System Unit)Data/CLKC.2 KEYSTROKE PROCESSINGA functional

Page 87 - 4.7.2 PASSWORD PROTECTION

Technical Reference Guide Compaq Personal ComputersChange

Page 88 - 4.7.4 USER SECURITY

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-4C.2.2 KEYBOARD LAYOUTSC.2.2.1 Standard Enhanced KeyboardsFigure C–3. U.S

Page 89 - 4.7.5 TEMPERATURE SENSING

Technical Reference Guide Compaq Personal ComputersChange

Page 90 - 4.7.6 POWER MANAGEMENT

Chapter 1 Introduction Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19971-6Table 1-1. Acronyms and Abbreviations Cont

Page 91 - INPUT/OUTPUT INTERFACES

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-6C.2.2.3 Windows Enhanced Keyboards w/Erase-EaseFigure C–7. U.S. English W

Page 92

Technical Reference Guide Compaq Personal ComputersChange

Page 93

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-8C.2.3.2 Multi-Keystroke FunctionsShift - The Shift key (pos. 75/86), when h

Page 94

Technical Reference Guide Compaq Personal ComputersChange

Page 95

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-10C.2.4 KEYBOARD COMMANDSTable C-1 lists the commands that the keyboard can

Page 96

Technical Reference Guide Compaq Personal ComputersChange

Page 97

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-12Table C-2. Keyboard Scan Codes (Continued)KeyPos Legend Mode 1 Mode 2 Mode

Page 98 - 5.2.2 IDE CONNECTORS

Technical Reference Guide Compaq Personal ComputersChange

Page 99

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-14COM Port(System Unit)AnalogVideoDataMotor Cntrl.Serial DataClocks & LED

Page 100 - 5.3 DISKETTE DRIVE INTERFACE

Technical Reference Guide Compaq Personal ComputersChange

Page 101

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 102

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-16StartYesScan Image(Image Aquisition)PRNUCorrectionMTFCorrectionResolutionCo

Page 103

Technical Reference Guide Compaq Personal ComputersChange

Page 104

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-18C.3.2 SCANNER INTERFACEThe scanner communicates with the system unit (host

Page 105 - 5.4.1 RS-232 INTERFACE

Technical Reference Guide Compaq Personal ComputersChange

Page 106

Appendix C Keyboard Compaq Personal ComputersChanged - November 1996C-20C.3.3 SCANNER SPECIFICATIONS/REQUIREMENTSTable C–5. Scanner Specificatio

Page 107

Technical Reference Guide Compaq Deskpro 2000 Personal Computers

Page 108

IndexCompaq Deskpro 2000 Personal Computers with MMX TechnologyFirst Edition – July 1997I-2memory, cache (SRAM), 2-10memory, ROM (BIOS), 2-10memo

Page 109

This hardcopy is designed to be placed into a standard 3-ring binder. Provided below is a title block thatcan be copied and cut out and placed into th

Page 110

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-22.2 FEATURESThis section describes the

Page 111 - 5.5 PARALLEL INTERFACE

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 112

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-42.3 MECHANICAL DESIGNThis section illu

Page 113

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 114

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-62.3.2 CHASSIS LAYOUTNOTES:[1] Deskpro

Page 115

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 116

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-82.4 SYSTEM ARCHITECTUREThe Compaq Desk

Page 117

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 118

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-102.4.1 MICROPROCESSORThe Compaq Deskpr

Page 119

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 120 - 5.6.3.1 8042 Configuration

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition

Page 121 - 5.6.3.2 8042 Control

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-122.4.6 UNIVERSAL SERIAL BUS INTERFACET

Page 122 - Continued

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 123 - (Continued)

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-14Table 2–7. Diskette Drive Specificat

Page 124 - 1 DATA Data 4 + 5 VDC Power

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -Septem

Page 125 - 5.7 ETHERNET INTERFACE

Chapter 2 System Overview Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19972-16This page is intentionally blank.

Page 126 - 5.7.2 NIC CONNECTORS

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 1997

Page 127 - 5.8.1 USB CONFIGURATION

Chapter 3 Processor/Memory Subsystem Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19973-2Mem.Data BusMem. Addr.3.2 PE

Page 128 - 5.8.3 USB CONNECTOR

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 1997

Page 129 - GRAPHICS SUBSYSTEM

Chapter 3 Processor/Memory Subsystem Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19973-43.2.2 BUS/PROCESSING SPEED S

Page 130 - 6.2 SUBSYSTEM DESCRIPTION

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 1997

Page 131

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition – September 1997ii

Page 132 - 6.2.3.2 Subsystem Control

Chapter 3 Processor/Memory Subsystem Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19973-6Table 3–5. SPD Address Map (S

Page 133 - MONITOR POWER CONTROL

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 1997

Page 134 - 6.2.5 CONNECTORS

Chapter 3 Processor/Memory Subsystem Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19973-83.2.5 SUBSYSTEM CONFIGURATIO

Page 135 - DISTRIBUTION

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 136 - 7.2.1 POWER SUPPLY ASSEMBLY

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-24.2 PCI BUS OVERVIEWNOTE:This section

Page 137 - 7.2.2 POWER CONTROL

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 138 - 7.3 POWER DISTRIBUTION

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-44.2.2 PCI BUS MASTER ARBITRATIONThe PC

Page 139

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 140 - 7.4 SIGNAL DISTRIBUTION

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-6Figure 4-3 shows how the loading of 0CF

Page 141 - BIOS ROM

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 142 - 8.2.3 SILENTBOOT

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition

Page 143 - SETTING DEFAULT PARAMETERS

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-8Table 4–5. PCI Device Identification

Page 144

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 145

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-104.2.6 PCI CONFIGURATIONPCI bus operat

Page 146

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 147 - 8.4.1 SYSTEM ID

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-124.3.1 ISA CONNECTORNOTE: See caution

Page 148 - Chapter 8 BIOS ROM

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 149 - Technical Reference Guide

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-14The following guidelines apply to opti

Page 150

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 151

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-164.3.3.1 Page RegistersThe DMA page re

Page 152 - 8.4.4 DRIVE FAULT PREDICTION

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 153 - 8.4.5 DIMM SUPPORT

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition – September 1997ivCHAPTER 4 SYSTEM SUPPORT...

Page 154

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-184.3.4 INTERRUPTSThe microprocessor us

Page 155 - 8.4.6 SECURITY FUNCTIONS

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 156

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-204.3.4.2 Non-Maskable InterruptsNon-ma

Page 157 - 8.5 PNP SUPPORT

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 158 - 8.6 POWER MANAGEMENT SUPPORT

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-224.3.5 INTERVAL TIMERThe interval time

Page 159

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 160

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-244.5 REAL-TIME CLOCK AND CONFIGURATION

Page 161 - ERROR MESSAGES AND CODES

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 162

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-26RTC Control Register A, Byte 0AhBit Fu

Page 163

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 164

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition

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Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-28Configuration Byte 13h, Security Funct

Page 166

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 167

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-30Configuration Byte 26h, Auxiliary Peri

Page 168

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 169

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-32Configuration Byte 2Dh, Additional Fla

Page 170

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 171

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-34Configuration Byte 45h, Keyboard Snoop

Page 172

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 173 - ASCII CHARACTER SET

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-36Configuration Byte 83h, Microprocessor

Page 174

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 175 - KEYBOARD

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition – September 1997vi8.4 CLIENT MANAGEMENT SUPPORT...

Page 176 - C.2 KEYSTROKE PROCESSING

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-38Configuration Byte 94h, ROM Flash/Powe

Page 177

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 178 - C.2.2 KEYBOARD LAYOUTS

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-40Configuration Byte C7h, C8h, Serial Po

Page 179

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 180

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-424.6.2 87307 I/O CONTROLLER CONFIGURAT

Page 181 - C.2.3 KEYS

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 182 - Changed - November 1996

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-444.7 SYSTEM MANAGEMENT SUPPORTThis sec

Page 183 - C.2.3.3 Windows Keystrokes

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

Page 184 - C.2.5 SCAN CODES

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-464.7.3 I/O SECURITYThe 87307 I/O contr

Page 185

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September

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Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal Computers First Edition

Page 187

Chapter 4 System Support Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition - September 19974-484.7.6 POWER MANAGEMENTThis system inc

Page 188 - C.3 SCANNER DESCRIPTION

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 189 - C.3.1 SCANNER OPERATION

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-25.2.1.1 IDE Configuration Regi

Page 190 - Compaq Personal Computers

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 191 - C.3.1.2 Image Quality

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-4The contents of the Error regis

Page 192 - C.3.2 SCANNER INTERFACE

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 193 - C.3.2.1 Pnyb Mode

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-6Command Register, I/O Port 1F7h

Page 194

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

Page 195 - First Edition – July 1997

Chapter 5 Input/Output Interfaces Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition – September 19975-85.2.2 IDE CONNECTORSThis syste

Page 196

Technical Reference Guide Compaq Deskpro 4000N and 4000S Personal ComputersFirst Edition -

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