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Compaq 4000N manuals

Owner’s manuals and user’s guides for Computers Compaq 4000N.
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Compaq 4000N User Manual (196 pages)


Brand: Compaq | Category: Computers | Size: 0.98 MB |

 

Table of contents

Technical

1

Reference

1

Technical Reference Guide

4

TABLE OF CONTENTS

5

LIST OF FIGURES

10

LIST OF TABLES

11

Chapter 1

13

INTRODUCTION

13

Continued

15

Chapter 2

19

SYSTEM OVERVIEW

19

2.2 FEATURES

20

2.2.1 STANDARD FEATURES

20

2.2.2 MODEL DIFFERENCES

21

2.2.3 OPTIONS

21

2.3 MECHANICAL DESIGN

22

2.3.1 CABINET LAYOUT

22

2.3.2 CHASSIS LAYOUT

24

2.3.3 SYSTEM BOARD LAYOUT

25

2.4 SYSTEM ARCHITECTURE

26

2.4.1 MICROPROCESSOR

28

2.4.2 MEMORY

28

2.4.3 SUPPORT CHIPSET

29

2.4.4 MASS STORAGE

29

2.4.7 GRAPHICS SUBSYSTEM

30

2.5 SPECIFICATIONS

31

Chapter 2 System Overview

34

Chapter 3

35

PROCESSOR/

35

MEMORY SUBSYSTEM

35

3.2.1.1 MMX Technology

37

3.2.4 SYSTEM MEMORY

39

Chapter 4

43

SYSTEM SUPPORT

43

4.2 PCI BUS OVERVIEW

44

4.2.1 PCI CONNECTOR

45

4.2.3 PCI BUS TRANSACTIONS

47

4.2.3.2 Configuration Cycles

47

4.2.5 PCI INTERRUPT MAPPING

51

4.2.6 PCI CONFIGURATION

52

4.3 ISA BUS OVERVIEW

53

4.3.1 ISA CONNECTOR

54

4.3.2 ISA BUS TRANSACTIONS

55

4.3.3 DIRECT MEMORY ACCESS

57

4.3.3.1 Page Registers

58

4.3.4 INTERRUPTS

60

4.3.4.1 Maskable Interrupts

60

NMI- Generation

62

SMI- Generation

63

4.3.5 INTERVAL TIMER

64

4.3.6 ISA CONFIGURATION

64

Chapter 4 System Support

82

4.6.1 SYSTEM I/O MAP

83

4.7.2 PASSWORD PROTECTION

87

4.7.3 I/O SECURITY

88

4.7.4 USER SECURITY

88

4.7.5 TEMPERATURE SENSING

89

4.7.6 POWER MANAGEMENT

90

Chapter 5

91

INPUT/OUTPUT INTERFACES

91

5.2.2 IDE CONNECTORS

98

5.3 DISKETTE DRIVE INTERFACE

100

5.4 SERIAL INTERFACES

105

5.4.1 RS-232 INTERFACE

105

5.5 PARALLEL INTERFACE

111

5.6.3.1 8042 Configuration

120

5.6.3.2 8042 Control

121

Continued

122

(Continued)

123

1 DATA Data 4 + 5 VDC Power

124

5.7 ETHERNET INTERFACE

125

5.7.2 NIC CONNECTORS

126

5.8.1 USB CONFIGURATION

127

5.8.2 USB CONTROL

128

5.8.3 USB CONNECTOR

128

Chapter 6

129

GRAPHICS SUBSYSTEM

129

6.2 SUBSYSTEM DESCRIPTION

130

6.2.3.2 Subsystem Control

132

MONITOR POWER CONTROL

133

6.2.5 CONNECTORS

134

Chapter 7

135

POWER and SIGNAL

135

DISTRIBUTION

135

7.2.1 POWER SUPPLY ASSEMBLY

136

7.2.2 POWER CONTROL

137

7.3 POWER DISTRIBUTION

138

7.4 SIGNAL DISTRIBUTION

140

Chapter 8

141

BIOS ROM

141

8.2 BOOT FUNCTIONS

142

8.2.1 BOOT BLOCK

142

8.2.2 QUICKBOOT

142

8.2.3 SILENTBOOT

142

ACCESSING CMOS

143

SETTING DEFAULT PARAMETERS

143

8.4.1 SYSTEM ID

147

Chapter 8 BIOS ROM

148

Technical Reference Guide

149

8.4.3 TEMPERATURE SENSOR

152

8.4.4 DRIVE FAULT PREDICTION

152

8.4.5 DIMM SUPPORT

153

8.4.6 SECURITY FUNCTIONS

155

8.5 PNP SUPPORT

157

8.6 POWER MANAGEMENT SUPPORT

158

Appendix A

161

ERROR MESSAGES AND CODES

161

Appendix B

173

ASCII CHARACTER SET

173

Appendix C

175

KEYBOARD

175

C.2 KEYSTROKE PROCESSING

176

C.2.2 KEYBOARD LAYOUTS

178

C.2.3 KEYS

181

Changed - November 1996

182

C.2.3.3 Windows Keystrokes

183

C.2.4 KEYBOARD COMMANDS

184

C.2.5 SCAN CODES

184

C.3 SCANNER DESCRIPTION

188

C.3.1 SCANNER OPERATION

189

Appendix C Keyboard

190

Compaq Personal Computers

190

C.3.1.2 Image Quality

191

C.3.2 SCANNER INTERFACE

192

C.3.2.1 Pnyb Mode

193

First Edition – July 1997

195




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