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Compaq EN Series User Manual
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Table of Contents
Default Chapter
1
Technical Reference
1
Table of Contents
6
List of Figures
11
List of Tables
13
Chapter 1 Introduction
16
About this Guide
16
Using this Guide
16
Additional Information Sources
16
Notational Conventions
17
Values
17
Ranges
17
Signal Labels
17
Register Notation and Usage
17
Bit Notation
17
Common Acronyms and Abbreviations
18
Chapter 2 System Overview
22
Introduction
22
Figure 2-1. Compaq Deskpro
22
Features and Options
23
Standard Features
23
Options
24
Mechanical Design
25
Cabinet Layouts
25
Figure 2-2. Cabinet Layouts , F
25
Figure 2-3. Cabinet Layouts , R
26
Chassis Layouts
27
Figure 2-4. Desktop Chassisl
27
Figure 2-5. Minitower Chassis
28
Board Layouts
29
Figure 2-6. System Boardc
29
System Architecture
31
Processor
33
System Memory
34
Support Chipset
34
Mass Storage
34
Serial and Parallel Interfaces
35
Universal Serial Bus Interface
35
Graphics Subsystem
35
Audio Subsystem
35
Specifications
36
Chapter 3 Processor/Memory Subsystem
40
Introduction
40
Processor/Memory Subsystem
40
Processor
40
Figure 3-1. Processor /Memory
41
Figure 3-2. Pentium II Processor
42
Figure 3-3. Celeron Processor
43
Processor Changing/Upgrading
44
System Memory
45
Figure 3-4. System Memorym
47
Subsystem Configuration
48
Chapter 4 System Support
50
Introduction
50
Pci Bus Overview
51
Pci Connector
52
Pci Bus Master Arbitration
53
Pci Bus Transactions
54
Figure 4-3. Type 0 Configuration
55
Option Rom Mapping
57
Pci Interrupt Mapping
58
Pci Power Management Support
58
Pci Configuration
59
Agp Bus Overview
60
Bus Transactions
60
Agp Configuration
63
Agp Connector
64
Isa Bus Overview
65
Isa Connector
66
Isa Bus Transactions
67
Direct Memory Access
69
Interrupts
72
Figure 4-10. Maskable Interrupt
72
Interval Timer
76
Isa Configuration
76
System Clock Distribution
77
Real-Time Clock and Configuration Memory
78
Figure 4-11. Configurationm
78
I/O Map and Register Accessing
95
System I/O Map
95
Gpio Utilization
96
System Management Support
100
Flash Rom Write Protect
101
Password Protection
101
I/O Security
102
User Security
102
Temperature Sensing
103
Smart Cover Lock
104
Smart Cover Removal Sensor
104
Power Management
105
Monitor Power Control
106
Chapter 5 Input/Output Interfaces
108
Introduction
108
Enhanced Ide Interface
108
Ide Programming
108
Figure 5-4. Serial Interface
108
Ide Connector
115
Diskette Drive Interface
116
Diskette Drive Programming
117
Diskette Drive Connector
120
Serial Interfaces
121
Interface
121
Figure 5-3. Serial Interfaces
121
Serial Interface Programming
122
Table 5-11. Serial Interface
123
Parallel Interface
127
Standard Parallel Port Mode
127
Enhanced Parallel Port Mode
128
Extended Capabilities Port Mode
128
Parallel Interface Programming
129
Table 5-13. Parallel Interface
130
Parallel Interface Connector
133
Figure 5-5. Parallel Interface
133
Table 5-12. Parallel Interface
133
Table 5-14. Db-25 Parallelc
133
Keyboard/Pointing Device Interface
134
Keyboard Interface Operation
134
Pointing Device Interface Operation
136
Keyboard/Pointing Device Interface Programming
136
Table 5-16. Keyboard /Mouse
136
Keyboard/Pointing Device Interface Connector
140
Figure 5-7. Keyboard Orp
140
Table 5-18. Keyboard /Pointing
140
Universal Serial Bus Interface
141
Usb Keyboard Considerations
141
Usb Configuration
141
Usb Control
142
Usb Connector
142
Figure 5-8. Universal Serial
142
Chapter 6 Audio Subsystem
144
Introduction
144
Functional Description
145
Figure 6-1. Audio Subsystem
146
Figure 6-2. Analog Signals
147
Pcm Audio Processing
147
Figure 6-4. Audio Subsystem
149
Table 6-1. Audio Moded
149
Figure 6-6. Audio Car - to -Isa B
150
Fm Synthesis Audio Processing
150
Programming
151
Configuration
151
Control
152
Table 6-2. Audio Subsystem
152
Table 6-3. Compatibility Mode
152
Table 6-4. Extended Modea
153
Specifications
154
Table 6-6. Audio Subsystems
154
Chapter 7 Power Supply and Distribution
156
Introduction
156
Power Supply Assembly/Control
156
Figure 7-1. Power Distribution and Figure 7-2. Power Cabled
156
Power Supply Assembly
157
Table 7-1. Power Supplya
157
Power Control
158
Wake up Events
159
Power Distribution
160
5/12 VDC Distribution
160
Low Voltage Distribution
161
Figure 7-3. Low Voltage Supply
161
Signal Distribution
162
Figure 7-4. Signal Distribution
162
Figure 7-5. Backplane Header
163
Chapter 8 Bios Rom
164
Introduction
164
Boot/Reset Functions
165
Boot Block
165
Quickboot
165
Silentboot
165
Reset
165
Memory Detection and Configuration
166
Desktop Management Support
167
Table 8-1. Desktop Management
167
System ID
169
System Information Table
169
Drive Fault Prediction
176
Edid Retrieve
176
System Map Retrieval
177
Flash Rom Functions
178
Power Button Functions
178
Accessing Cmos
179
Accessing Cmos Feature Bits
179
Security Functions
181
Pnp Support
182
Table 8-1. Pnp BIOS Functions
182
Smbios
183
Power Management Functions
184
Independent Pm Support
184
Acpi Support
184
Apm Support
185
Usb Legacy Support
187
Bios Upgrading
187
Appendix Aerror MESSAGES and CODES
188
Introduction
188
Power-On Messages
188
Beep/Keyboard Led Codes
188
Table A-1. Power-On Messages
188
Table A-2. Beep /Keyboard
188
A.1 Introduction
188
A.2 Power-On Messages
188
A.3 Beep/Keyboard Led Codes
188
Power-On Self Test (Post) Messages
189
Table A-3. Power -O N Selft
189
Processor Error Messages
190
Table A-4. Processor Error
190
Memory Error Messages
191
Keyboard Error Messages
191
Table A-5. Memory Errorm
191
Table A-6. Keyboard Error
191
A.7 Keyboard Error Messages (30 X - XX )
191
Printer Error Messages
192
Video (Graphics) Error Messages
192
Table A-7. Printer Errorm
192
Table A-8. Video (Graphics ) E
192
Diskette Drive Error Messages
193
Serial Interface Error Messages
193
Table A-9. Diskette Drivee
193
Table A-10. Serial Interface
193
A.11 Serial Interface Error Messages (11 XX - XX )
193
Modem Communications Error Messages
194
Table 5-10. Serial Interface
194
Table A-11. Serial Interface
194
A.12 Modem Communications Error Messages (12 XX - XX )
194
Hard Drive Error Messages
195
A.13 Hard Drive Error Messages (17 XX - XX )
195
Hard Drive Error Messages
196
Video (Graphics) Error Messages
196
Table A-13. Hard Drive Error
196
Table A-14. Hard Drivem
196
A.14 Hard Drive Error Messages (19 XX - XX )
196
A.15 Video (Graphics) Error Messages (24 XX - XX )
196
Audio Error Messages (3206- XX
197
Network Interface Error Messages
197
Table A-15. Audio Errorm
197
Table A-16. Network Interface
197
A.17 Network Interface Error Messages (60 XX - XX )
197
Scsi Interface Error Messages
198
A.18 Scsi Interface Error Messages (65 XX - XX , 66 XX - XX , 67 XX - XX )
198
Pointing Device Interface Error Messages (8601- XX
198
Table A-17. Scsi Interfacee
198
Table A-18. Pointing Device
198
Cemm Priviledged Ops Error Messages
199
Cemm Exception Error Messages
199
Table A-19. Cemm Privileged
199
Table A-20. Cemm Exception
199
Appendix B Ascii Character Set
200
Introduction
200
Table B-1. Ascii Character
200
B.1 Introduction
200
Appendix Ckeyboard
202
Introduction
202
C.1 Introduction
202
Keystroke Processing
203
C.2 Keystroke Processing
203
Figure C-1. Keystrokep
203
Figure C-2. Keyboard -T O -S
204
Transmissions to the System
204
C.2.2 Keyboard Layouts
205
Figure C-3. U.s. English
205
Figure C-4. National
205
Keyboard Layouts
205
Figure C-5. U.s. Englishw
206
Figure C-6. National Windows
206
C.2.3 Keys
207
Keys
207
C.2.4 Keyboard Commands
210
C.2.5 Scan Codes
210
Keyboard Commands
210
Scan Codes
210
Table C-1. Keyboard - to -System
210
Table C-2. Keyboard Scanc
211
Appendix D Compaq 10/100 Tx Pci Intel Wol Utp Controller Card
214
D.1 Introduction
214
Figure D-1. Compaq
214
Functional Description
214
Introduction
214
D.2 Functional Description
215
D.2.1 Status Indicators
215
Figure D-2. Compaq 10/100 Tx Pci I
215
Status Indicators
215
82558 Controller
216
Card Power and Clock
216
D.2.3 82558 Controller
216
Figure D-3. 82558 Controller
216
Power Management Support
217
Configuration/Control
218
Connector
218
D.3 Configuration/Control
218
D.4 Rj-45 Connector
218
D.5 Specifications
218
Figure D-4. Ethernet Tpe C
218
Specifications
218
Table D-1. Operatings
218
Appendix E Wide Ultra Scsi Host Adapter
220
Introduction
220
Functional Description
220
Figure E-1. Wide Ultra Scsi H
220
E.1 Introduction
220
Figure E-2. Adaptec Aha-2940U U
221
E.2 Functional Description
221
Scsi Adapter Programming
222
Scsi Adapter Configuration
222
Scsi Adapter Control
222
Specifcations
222
Table E-1. Ultra Scsi Hosta
222
Table E-2. Ultra Scsi Hosta
222
E.4 Specifcations
222
User Guidelines
223
Table E-3. Wide Ultra Scsi a
223
E.5 User Guidelines
223
Scsi Connectors
224
Figure E-3. Ultra Scsi Connector
224
Table E-4. Scsi Connectorp
224
E.6 Scsi Connectors
224
Figure E-4. Wide Ultra Scsi C
225
Table E-5. Wide Ultra Scsi C
225
Appendix F Ati Rage Pro Agp 1X/2X Graphics Cards
226
Introduction
226
Functional Description
226
F.1 Introduction
226
F.2 Functional Description
227
Figure F-2. Ati Rage Pro Agp G
227
Ati Rage Pro Turbo Agp Graphics Controller
228
Figure F-3. Ati 3Dr Age Prog
228
Display Modes
229
Table F-1. 2D Graphics Display
229
Table F-2. 3D Graphics Display
229
F.3 Display Modes
229
Programming
230
Configuration
230
Control
230
Table F-3. Ati Rage Pro Pci C
230
Table F-4. Standard Vga M
230
F.4 Programming
230
F.4.1 Configuration
230
F.4.2 Control
230
Monitor Power Management Control
231
Connectors
231
Memory Expansion Connector
231
Table F-5. Monitor Powerm
231
F.6 Connectors
231
F.6.1 Memory Expansion Connector
231
Monitor Connector
232
Figure F-4. Vga Monitorc
232
Table F-6. Db-15 Monitorc
232
F.6.2 Monitor Connector
232
Ati Multimedia Channel Connector
233
Figure F-1. Ati Rage Pro Agp G
233
Figure F-5. Amc Connector
233
Table F-7. Multimedia Interface
233
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Compaq EN Series Specifications
General
Brand
Compaq
Model
EN Series
Category
Desktop
Language
English
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