HP Deskpro EX P866 Specifications Page 82
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Chapter 4 System Support
Compaq Deskpro EX Series of Personal Computers
First Edition - August 2000
4-30
4 Primary Hard Drive Enable (Non-PCI IDE Controllers)
0 = Disable
1 = Enable
3..0 Reserved
Configuration Byte 2Ah, Hard Drive Timeout
Default Value = 02h
Bit Function
7..5 Reserved
4..0 Hard Drive Timeout (index to SIT timeout record)
Configuration Byte 2Bh, System Inactivity Timeout
Default Value = 23h
Bit Function
7 Reserved
6,5 Power Conservation Boot
00 = Reserved
01 = PC on
10 = PC off
11 = Reserved
4..0 System Inactive Timeout. (Index to SIT system timeout
record)
00000 = Disabled
Configuration Byte 2Ch, ScreenSave and NUMLOCK Control
Default Value = 00h
Bit Function
7 Reserved
6 Numlock Control
0 = Numlock off at power on
1 = Numlock on at power on
5 Screen Blank Control:
0 = No screen blank
1 = Screen blank w/QuickLock
4..0 ScreenSave Timeout. (Index to SIT monitor timeout record)
000000 = Disabled
- Technical Reference Guide 1
- Reader Feedback 5
- Technical Reference Guide 8
- TABLE OF CONTENTS 9
- First Edition –- August 2000 10
- LIST OF FIGURES 14
- LIST OF TABLES 16
- Chapter 1 19
- INTRODUCTION 19
- Review Copy – August 2000 20
- Chapter 1 Introduction 24
- Table 1-1 24
- Chapter 2 25
- SYSTEM OVERVIEW 25
- 2.2 FEATURES AND OPTIONS 26
- 2.2.1 STANDARD FEATURES 26
- 2.2.2 OPTIONS 27
- 2.3 MECHANICAL DESIGN 28
- 2.3.1 CABINET LAYOUTS 29
- 2.3.1.1 Front Views 29
- 2.3.1.2 Rear Views 30
- 2.3.2 CHASSIS LAYOUTS 31
- 2.3.3 BOARD LAYOUT 33
- 2.4 SYSTEM ARCHITECTURE 34
- 2.4.1 PROCESSORS 36
- 2.4.1.1 Celeron Processor 37
- 2.4.2 CHIPSET 38
- 2.4.3 SUPPORT COMPONENTS 38
- 2.4.4 SYSTEM MEMORY 39
- 2.4.5 MASS STORAGE 39
- 2.4.8 GRAPHICS SUBSYSTEM 40
- 2.4.9 AUDIO SUBSYSTEM 41
- 2.5 SPECIFICATIONS 41
- Chapter 2 System Overview 44
- Chapter 3 45
- PROCESSOR/ 45
- MEMORY SUBSYSTEM 45
- 3.2 PROCESSOR 46
- 3.2.1 CELERON PROCESSOR 46
- 3.2.2 PENTIUM III PROCESSOR 47
- 3.2.3 PROCESSOR UPGRADING 48
- 3.3 MEMORY SUBSYSTEM 49
- 3.4 SUBSYSTEM CONFIGURATION 52
- Chapter 4 53
- SYSTEM SUPPORT 53
- 4.2 PCI BUS OVERVIEW 54
- 4.2.1 PCI BUS TRANSACTIONS 55
- 4.2.1.2 Configuration Cycles 55
- 4.2.7 PCI CONFIGURATION 60
- 4.2.8 PCI CONNECTOR 61
- 4.3 AGP BUS OVERVIEW 62
- 4.3.1 BUS TRANSACTIONS 62
- 4.3.1.1 Data Request 63
- 4.3.1.2 Data Transfers 63
- AGP 2X Transfers 64
- AGP 4X Transfers 64
- 4.3.2 AGP CONFIGURATION 65
- 4.3.3 AGP CONNECTOR 66
- 4.4 SYSTEM RESOURCES 67
- 4.4.1 INTERRUPTS 67
- 4.4.1.1 Maskable Interrupts 67
- 8259 Mode 68
- APIC Mode 68
- NMI- Generation 69
- SMI- Generation 70
- 4.4.2 DIRECT MEMORY ACCESS 71
- 4.4.2.1 DMA Page Registers 72
- 4.6.1 CLEARING CMOS 75
- 4.7 SYSTEM MANAGEMENT 85
- 4.7.1 SECURITY FUNCTIONS 85
- 4.7.1.1 Power-On Password 85
- 4.7.1.2 Setup Password 85
- 4.7.1.3 Cable Lock Provision 86
- 4.7.2 POWER MANAGEMENT 87
- 4.7.3 SYSTEM STATUS 87
- 4.7.4 TEMPERATURE SENSING 88
- 4.8 SYSTEM COOLING 89
- 4.9.1 SYSTEM I/O MAP 90
- Chapter 5 95
- INPUT/OUTPUT INTERFACES 95
- 5.2.2 IDE CONNECTOR 97
- 5.3 DISKETTE DRIVE INTERFACE 98
- Table 5-5 100
- 5.4 SERIAL INTERFACE 102
- 5.4.1 RS-232 INTERFACE 102
- 5.5 PARALLEL INTERFACE 104
- First Edition - August 2000 105
- 5.6.3.1 8042 Configuration 110
- 5.6.3.2 8042 Control 111
- Table 5-15 112
- 1 DATA Data 4 + 5 VDC Power 113
- 5.7.1 USB DATA FORMATS 114
- 5.7.2 USB PROGRAMMING 116
- 5.7.2.1 USB Configuration 116
- 5.7.2.2 USB Control 116
- 5.7.3 USB CONNECTOR 117
- 5.7.4 USB CABLE DATA 117
- 5.8 AUDIO SUBSYSTEM 118
- 5.8.1 FUNCTIONAL ANALYSIS 118
- 5.8.2 AC97 AUDIO CONTROLLER 120
- 5.8.3 AC97 LINK BUS 120
- 5.8.4 AUDIO CODEC 121
- 5.8.5 AUDIO PROGRAMMING 122
- 5.8.5.1 Audio Configuration 122
- 5.8.5.2 Audio Control 122
- 5.8.6 AUDIO SPECIFICATIONS 123
- 5.9 NETWORK SUPPORT 124
- 5.9.1 PCI VER. 2.2 SUPPORT 124
- 5.9.2 ALERT-ON-LAN SUPPORT 124
- First Edition – August 2000 128
- Chapter 6 129
- EMBEDDED GRAPHICS SUBSYSTEM 129
- 6.2.1 DISPLAY MODES 132
- 6.5 MONITOR CONNECTOR 134
- Chapter 7 135
- POWER and SIGNAL 135
- DISTRIBUTION 135
- 7.1.1 POWER SUPPLY ASSEMBLY 136
- 7.1.2 POWER CONTROL 137
- 7.1.2.1 Power Button 137
- 7.1.2.3 Wake Up Events 138
- 7.2 POWER DISTRIBUTION 139
- 7.3 SIGNAL DISTRIBUTION 142
- Chapter 8 145
- BIOS ROM 145
- 8.2 ROM FLASHING 146
- 8.2.1 UPGRADING 146
- 8.3 BOOT FUNCTIONS 148
- 8.3.1 BOOT DEVICE ORDER 148
- 8.3.4 BOOT ERROR CODES 149
- 8.4 SETUP UTILITY 150
- Chapter 8 BIOS ROM 152
- Continued 153
- 8.5.1 SYSTEM ID AND ROM TYPE 158
- 8.5.2 EDID RETRIEVE 158
- 8.5.3 TEMPERATURE STATUS 159
- 8.5.4 DRIVE FAULT PREDICTION 159
- 8.6 PNP SUPPORT 159
- 8.6.1 SMBIOS 160
- 8.7.1 INDEPENDENT PM SUPPORT 161
- System Timer 161
- IDE Hard Drive Timer 161
- 8.7.2 ACPI SUPPORT 163
- 8.7.3 APM 1.2 SUPPORT 163
- 8.7.3.1 Staying Awake in APM 165
- System/Hard Drive Standby 166
- System Suspend 166
- System OFF 167
- 8.7.3.3 Waking Up in APM 167
- 8.8 USB LEGACY SUPPORT 167
- Appendix A 169
- ERROR MESSAGES AND CODES 169
- Compaq Personal Computers 180
- Appendix B 181
- ASCII CHARACTER SET 181
- Compaq Personal Computers 182
- Appendix C 183
- KEYBOARD 183
- C.2 KEYSTROKE PROCESSING 184
- Changed - July 2000 186
- C.2.3 KEYBOARD LAYOUTS 187
- Appendix C Keyboard 188
- Compaq Personal Computers 188
- C.2.4 KEYS 190
- C.2.4.3 Windows Keystrokes 191
- C.2.5 KEYBOARD COMMANDS 193
- C.2.6 SCAN CODES 193
- Continued 195
- 196
- C.3 CONNECTORS 198
- Appendix D 199
- COMPAQ/NVIDIA VANTA LT 199
- AGP GRAPHICS CARD 199
- D.2 FUNCTIONAL DESCRIPTION 200
- D.3 DISPLAY MODES 201
- D.6 CONNECTORS 203
- D.6.1 MONITOR CONNECTOR 203
- Appendix E 205
- E.2 FUNCTIONAL DESCRIPTION 206
- E.3 DISPLAY MODES 207
- E.5 MONITOR CONTROL 208
- E.6 CONNECTORS 209
- E.6.2 MONITOR CONNECTOR 209
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