Compaq Deskpro Personal Computers
Covering Models Featuring
Intel Celeron and Pentium III Processors
and
Intel 810, 810e, and 820 Chipsets
This hardcopy is designed to be placed into a standard 3-ring binder. Provided below is a title block that
can be copied and cut out and placed into the slip or taped onto the edge of the binder.
Deskpro Personal Computers
T RG
Featuring Intel Celeron and Pentium III Processors
and Intel 810, 810e, and 820 Chipsets
Reader Feedback
Please feel free to send any questions, suggestions, corrections, or comments regarding this
document please to the following email address:
Desktop.training.feedback@Compaq.com
When responding, please state the title of the referenced document.
Technical Reference Guide
NOTICE
The information in this document is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS HEREIN; NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE,
OR USE OF THIS MATERIAL. IT IS THE RESPONSIBILITY OF MANUFACTURERS TO
ENSURE THAT DEVICES DESIGNED TO BE USED WITH COMPAQ PRODUCTS
COMPLY WITH FCC CLASS B EMISSIONS REQUIREMENTS.
This guide contains information protected by copyright. No part of this document may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
1999 Compaq Computer Corporation
All rights reserved. Printed in the USA
Compaq, Deskpro, LTE, Contura, Presario, ProLinea
Registered U.S. Patent and Trademark Office
Product names mentioned in this document may be trademarks and/or registered trademarks of other companies.
"Celeron," "Pentium" and "MMX" are registered trademarks of Intel Corporation.
"Microsoft," "MS-DOS," "Windows," and "Windows NT" are registered trademarks of Microsoft Corporation.
For more information regarding specifications and Compaq-specific parts please contact Compaq
Computer Corporation.
Technical Reference Guide
for
Compaq Deskpro Personal Computers
First Edition - December 1999
Document Number 11MR-1299A-WWEN
Compaq Deskpro Personal Computers i
First Edition - December 1999
Technical Reference Guide
ii Compaq Deskpro Personal Computers
First Edition - December1999
Technical Reference Guide
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION.............................................................................................................
1. 1 ABOUT THIS GUIDE ........................................................................................................... 1-1
1.1.1 USING THIS GUIDE ..................................................................................................... 1-1
1. 1. 2 ADDITIONAL INFORMATION SOURCES.................................................................. 1-1
1. 2 MODEL NUMBERING CONVENTION ............................................................................... 1-1
1.3 NOTATIONAL CONVENTIONS.......................................................................................... 1-2
1.3.1 VALUES ........................................................................................................................ 1-2
1.3.2 RANGES........................................................................................................................ 1-2
1.3.3 SIGNAL LABELS.......................................................................................................... 1-2
1.3.4 REGISTER NOTATION AND USAGE ......................................................................... 1-2
1.3.5 BIT NOTATION ............................................................................................................ 1-2
COMMON ACRONYMS AND ABBREVIATIONS .............................................................. 1-3
1.4
CHAPTER 2 SYSTEM OVERVIEW.....................................................................................................
2.1 INTRODUCTION .................................................................................................................. 2-1
2.2 FEATURES AND OPTIONS ................................................................................................. 2-2
2. 2. 1 STANDARD FEATURES .............................................................................................. 2-2
2.2.2 OPTIONS ....................................................................................................................... 2-3
2. 3 MECHANICAL DESIGN ...................................................................................................... 2-4
2.3.1 CABINET LAYOUTS.................................................................................................... 2-4
2.3.2 CHASSIS LAYOUTS..................................................................................................... 2-9
2.3.3 BOARD LAYOUTS ..................................................................................................... 2-13
2.4 SYSTEM ARCHITECTURE................................................................................................ 2-18
2.4.1 PROCESSORS ............................................................................................................. 2-22
2.4.2 CHIPSETS ................................................................................................................... 2-24
2.4.3 SUPPORT COMPONENTS.......................................................................................... 2-25
2. 4. 4 SYSTEM MEMORY.................................................................................................... 2-25
2.4.5 MASS STORAGE ........................................................................................................ 2-26
2.4.6 SERIAL AND PARALLEL INTERFACES .................................................................. 2-26
2.4.7 UNIVERSAL SERIAL BUS INTERFACE ................................................................... 2-26
2.4.8 GRAPHICS SUBSYSTEM ........................................................................................... 2-26
2.4.9 AUDIO SUBSYSTEM ................................................................................................. 2-27
2.5 SPECIFICATIONS .............................................................................................................. 2-27
CHAPTER 3 PROCESSOR/MEMORY SUBSYSTEM ........................................................................
3.1 INTRODUCTION .................................................................................................................. 3-1
810/810E-BASED PROCESSOR/MEMORY SUBSYSTEM ................................................. 3-2
3.2
3.2.1 CELERON PROCESSOR............................................................................................... 3-3
3. 2. 2 PENTIUM III PROCESSOR........................................................................................... 3-4
3.2.3 SDRAM MEMORY ....................................................................................................... 3-5
3. 2. 4 SUBSYSTEM CONFIGURATION................................................................................. 3-8
3. 3 820-BASED PROCESSOR/MEMORY SUBSYSTEM .......................................................... 3-9
3. 3. 1 PENTIUM III PROCESSOR......................................................................................... 3-10
3.3.2 RDRAM MEMORY ..................................................................................................... 3-10
Compaq Deskpro Personal Computers iii
First Edition - December 1999
Technical Reference Guide
CHAPTER 4 SYSTEM SUPPORT.........................................................................................................
4.1 INTRODUCTION .................................................................................................................. 4-1
4.2 PCI BUS OVERVIEW ........................................................................................................... 4-2
4.2.1 PCI BUS TRANSACTIONS........................................................................................... 4-3
4.2.2 PCI BUS MASTER ARBITRATION.............................................................................. 4-6
4.2.3 OPTION ROM MAPPING ............................................................................................. 4-7
4. 2. 4 PCI INTERRUPT MAPPING ......................................................................................... 4-7
4.2.5 PCI POWER MANAGEMENT SUPPORT..................................................................... 4-7
4.2.6 PCI SUB-BUSSES.......................................................................................................... 4-7
4.2.7 PCI CONFIGURATION................................................................................................. 4-8
4.2.8 PCI CONNECTOR......................................................................................................... 4-9
4.3 AGP BUS OVERVIEW ....................................................................................................... 4-10
4.3.1 BUS TRANSACTIONS................................................................................................ 4-10
4.3.2 AGP CONFIGURATION ............................................................................................. 4-13
4. 3. 3 AGP CONNECTOR..................................................................................................... 4-14
4.4 ISA BUS OVERVIEW......................................................................................................... 4-15
4. 4. 1 ISA CONNECTOR ...................................................................................................... 4-16
4.4.2 ISA BUS TRANSACTIONS......................................................................................... 4-17
4.4.3 DIRECT MEMORY ACCESS...................................................................................... 4-19
4.4.4 INTERRUPTS .............................................................................................................. 4-22
4.4.5 INTERVAL TIMER..................................................................................................... 4-26
4.4.6 ISA CONFIGURATION............................................................................................... 4-26
4.5 SYSTEM CLOCK DISTRIBUTION .................................................................................... 4-27
4. 6 REAL-TIME CLOCK AND CONFIGURATION MEMORY............................................... 4-28
4.6.1 STANDARD CMOS LOCATIONS .............................................................................. 4-29
4.6.2 CMOS FEATURE BITS............................................................................................... 4-37
SYSTEM MANAGEMENT ................................................................................................. 4-38
4.7
4.7.1 SECURITY FUNCTIONS ............................................................................................ 4-38
4.7.2 POWER MANAGEMENT ........................................................................................... 4-39
4. 7. 3 SYSTEM STATUS ...................................................................................................... 4-40
4. 7. 4 THERMAL SENSING AND COOLING ...................................................................... 4-41
4.8 REGISTER MAP AND MISCELLANEOUS FUNCTIONS ................................................. 4-42
4. 8. 1 SYSTEM I/O MAP ...................................................................................................... 4-42
4.8.2 82801 ICH GENERAL PURPOSE FUNCTIONS ......................................................... 4-43
4.8.3 LPC47B34x I/O CONTROLLER FUNCTIONS............................................................ 4-44
CHAPTER 5 INPUT/OUTPUT INTERFACES .....................................................................................
5.1 INTRODUCTION .................................................................................................................. 5-1
5.2 ENHANCED IDE INTERFACE ............................................................................................ 5-1
5.2.1 IDE PROGRAMMING................................................................................................... 5-1
5.2.2 IDE CONNECTOR ........................................................................................................ 5-3
5.3 DISKETTE DRIVE INTERFACE.......................................................................................... 5-5
5.3.1 DISKETTE DRIVE PROGRAMMING .......................................................................... 5-6
5.3.2 DISKETTE DRIVE CONNECTOR................................................................................ 5-8
5.4 SERIAL INTERFACES ......................................................................................................... 5-9
5.4.1 RS-232 INTERFACE ..................................................................................................... 5-9
5.4.2 SERIAL INTERFACE PROGRAMMING .................................................................... 5-10
5.5 PARALLEL INTERFACE ................................................................................................... 5-12
5.5.1 STANDARD PARALLEL PORT MODE ..................................................................... 5-12
5. 5. 2 ENHANCED PARALLEL PORT MODE ..................................................................... 5-13
5.5.3 EXTENDED CAPABILITIES PORT MODE ............................................................... 5-13
5.5.4 PARALLEL INTERFACE PROGRAMMING .............................................................. 5-14
5.5.5 PARALLEL INTERFACE CONNECTOR ................................................................... 5-18
iv Compaq Deskpro Personal Computers
First Edition - December1999
Technical Reference Guide
5.6 KEYBOARD/POINTING DEVICE INTERFACE ............................................................... 5-19
5.6.1 KEYBOARD INTERFACE OPERATION ................................................................... 5-19
5.6.2 POINTING DEVICE INTERFACE OPERATION ....................................................... 5-21
5.6.3 KEYBOARD/POINTING DEVICE INTERFACE PROGRAMMING ......................... 5-21
5.6.4 KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR................................ 5-25
5. 7 UNIVERSAL SERIAL BUS INTERFACE........................................................................... 5-26
5. 7. 1 USB KEYBOARD CONSIDERATIONS...................................................................... 5-26
5.7.2 USB CONFIGURATION.............................................................................................. 5-26
5.7.3 USB CONTROL........................................................................................................... 5-27
5.7.4 USB CONNECTOR ..................................................................................................... 5-27
5. 8 AUDIO SUBSYSTEM ......................................................................................................... 5-28
5. 8. 1 FUNCTIONAL ANALYSIS ......................................................................................... 5-28
5.8.2 AC97 AUDIO CONTROLLER..................................................................................... 5-30
5.8.3 AC97 LINK BUS ......................................................................................................... 5-30
5.8.4 AUDIO CODEC........................................................................................................... 5-31
5. 8. 5 COMPAQ PREMIER SOUND COMPONENTS........................................................... 5-32
5.8.6 AUDIO PROGRAMMING ........................................................................................... 5-32
5. 8. 7 AUDIO SPECIFICATIONS ......................................................................................... 5-34
5. 9 NETWORK SUPPORT ........................................................................................................ 5-35
5.9.1 PCI VER.2.2 SUPPORT ............................................................................................... 5-35
5.9.2 WAKE-ON-LAN SUPPORT ........................................................................................ 5-35
5.9.3 NETWORK ALERT FUNCTIONS .............................................................................. 5-36
5.9.4 NETWORK INTERFACE CONTROLLER.................................................................. 5-40
CHAPTER 6 GRAPHICS SUBSYSTEM...............................................................................................
6.1 INTRODUCTION .................................................................................................................. 6-1
810-/810E-BASED GRAPHICS SUBSYSTEM ...................................................................... 6-2
6.2
6.2.1 FUNCTIONAL DESCRIPTION ..................................................................................... 6-2
6.2.2 DISPLAY MODES......................................................................................................... 6-4
6.2.3 UPGRADING................................................................................................................. 6-4
6.3 MATROX G400-BASED GRAPHICS SUBSYSTEM ............................................................ 6-5
6.3.1 DISPLAY MODES......................................................................................................... 6-6
6.3.2 UPGRADING................................................................................................................. 6-6
6.4 PROGRAMMING.................................................................................................................. 6-7
6.4.1 CONFIGURATION ........................................................................................................ 6-7
6.4.2 CONTROL ..................................................................................................................... 6-7
6. 5 MONITOR POWER MANAGEMENT CONTROL ............................................................... 6-8
6.6 MONITOR CONNECTOR .................................................................................................... 6-8
CHAPTER 7 POWER SUPPLY AND DISTRIBUTION.......................................................................
7.1 INTRODUCTION .................................................................................................................. 7-1
7.2 POWER SUPPLY ASSEMBLY/CONTROL .......................................................................... 7-1
7.2.1 POWER SUPPLY ASSEMBLY...................................................................................... 7-2
7.2.2 POWER CONTROL....................................................................................................... 7-3
7.3 POWER DISTRIBUTION...................................................................................................... 7-5
7.3.1 3.3/5/12 VDC DISTRIBUTION...................................................................................... 7-5
7.3.2 LOW VOLTAGE DISTRIBUTION................................................................................ 7-7
7. 4 SIGNAL DISTRIBUTION ..................................................................................................... 7-8
Compaq Deskpro Personal Computers v
First Edition - December 1999
Technical Reference Guide
CHAPTER 8 BIOS ROM .......................................................................................................................
8.1 INTRODUCTION .................................................................................................................. 8-1
8.2 BOOT/RESET FUNCTIONS ................................................................................................. 8-2
8.2.1 ROM FLASHING........................................................................................................... 8-2
8.2.2 BOOT BLOCK............................................................................................................... 8-2
8.2.3 QUICKBOOT................................................................................................................. 8-2
8.3 MEMORY DETECTION AND CONFIGURATION.............................................................. 8-3
8.4 DESKTOP MANAGEMENT SUPPORT ............................................................................... 8-4
8. 4. 1 SYSTEM ID................................................................................................................... 8-6
8.4.2 SYSTEM INFORMATION TABLE ............................................................................... 8-6
8.4.3 EDID RETRIEVE ........................................................................................................ 8-13
8.4.4 DRIVE FAULT PREDICTION..................................................................................... 8-13
8.4.5 SYSTEM MAP RETRIEVAL....................................................................................... 8-14
8.4.6 FLASH ROM FUNCTIONS ......................................................................................... 8-15
8.4.7 POWER BUTTON FUNCTIONS ................................................................................. 8-15
8.4.8 ACCESSING CMOS.................................................................................................... 8-16
8.4.9 ACCESSING CMOS FEATURE BITS......................................................................... 8-16
8.4.10 SECURITY FUNCTIONS ............................................................................................ 8-18
8.5 PNP SUPPORT .................................................................................................................... 8-19
8.5.1 SMBIOS ....................................................................................................................... 8-20
8. 6 POWER MANAGEMENT FUNCTIONS ............................................................................ 8-21
8.6.1 INDEPENDENT PM SUPPORT .................................................................................. 8-21
8.6.2 ACPI SUPPORT........................................................................................................... 8-21
8.6.3 APM 1.2 SUPPORT ..................................................................................................... 8-22
8.7 USB LEGACY SUPPORT ................................................................................................... 8-24
8.8 BIOS UPGRADING............................................................................................................. 8-24
APPENDIX A ERROR MESSAGES AND CODES...............................................................................
A.1 INTRODUCTION ................................................................................................................. A-1
A.2 POWER-ON MESSAGES..................................................................................................... A-1
A.3 BEEP/KEYBOARD LED CODES ........................................................................................ A-1
A.4 POWER-ON SELF TEST (POST) MESSAGES.................................................................... A-2
PROCESSOR ERROR MESSAGES (1XX-XX) ...................................................................... A-3
A.5
MEMORY ERROR MESSAGES (2XX-XX)........................................................................... A-4
A.6
KEYBOARD ERROR MESSAGES (30X-XX) ....................................................................... A-4
A.7
PRINTER ERROR MESSAGES (4XX-XX) ............................................................................ A-5
A.8
VIDEO (GRAPHICS) ERROR MESSAGES (5XX-XX) .......................................................... A-5
A.9
DISKETTE DRIVE ERROR MESSAGES (6XX-XX) ......................................................... A-6
A.10
SERIAL INTERFACE ERROR MESSAGES (11XX-XX) ................................................... A-6
A.11
MODEM COMMUNICATIONS ERROR MESSAGES (12XX-XX).................................... A-7
A.12
SYSTEM STATUS ERROR MESSAGES (16XX-XX) ........................................................ A-8
A.13
HARD DRIVE ERROR MESSAGES (17XX-XX) ............................................................... A-8
A.14
HARD DRIVE ERROR MESSAGES (19XX-XX) ............................................................... A-9
A.15
VIDEO (GRAPHICS) ERROR MESSAGES (24XX-XX) .................................................... A-9
A.16
AUDIO ERROR MESSAGES (3206-XX)......................................................................... A-10
A.17
DVD/CD-ROM ERROR MESSAGES (33XX-XX)............................................................ A-10
A.18
NETWORK INTERFACE ERROR MESSAGES (60XX-XX) ........................................... A-10
A.19
SCSI INTERFACE ERROR MESSAGES (65XX-XX, 66XX-XX, 67XX-XX) ....................... A-11
A.20
POINTING DEVICE INTERFACE ERROR MESSAGES (8601-XX).............................. A-11
A.21
A.22 CEMM PRIVILEDGED OPS ERROR MESSAGES........................................................ A-12
A.23 CEMM EXCEPTION ERROR MESSAGES ................................................................... A-12
vi Compaq Deskpro Personal Computers
First Edition - December1999
Technical Reference Guide
APPENDIX B ASCII CHARACTER SET .............................................................................................
B.1 INTRODUCTION .................................................................................................................. B-1
APPENDIX C KEYBOARD ...................................................................................................................
C.1 INTRODUCTION ..................................................................................................................C-1
C.2 KEYSTROKE PROCESSING................................................................................................C-2
C.2.1 TRANSMISSIONS TO THE SYSTEM ..........................................................................C-3
C.2.2 KEYBOARD LAYOUTS ...............................................................................................C-4
C.2.3 KEYS .............................................................................................................................C-6
C.2.4 KEYBOARD COMMANDS...........................................................................................C-9
C.2.5 SCAN CODES ...............................................................................................................C-9
APPENDIX D MATROX MILLENNIUM G400 AGP GRAPHICS CARD .........................................
D.1 INTRODUCTION ................................................................................................................. D-1
D.2 FUNCTIONAL DESCRIPTION............................................................................................ D-2
D.3 DISPLAY MODES ............................................................................................................... D-3
D.4 SOFTWARE SUPPORT INFORMATION ............................................................................ D-4
D.5 POWER MANAGEMENT AND CONSUMPTION .............................................................. D-4
D.6 CONNECTORS .................................................................................................................... D-5
D.6.1 MONITOR CONNECTOR............................................................................................ D-5
APPENDIX E ELSA SYNERGY II GRAPHICS CARD .......................................................................
E.1 INTRODUCTION .................................................................................................................. E-1
E. 2 FUNCTIONAL DESCRIPTION.............................................................................................E-2
E.3 DISPLAY CONFIGURATIONS ............................................................................................ E-3
E.4 SOFTWARE SUPPORT ........................................................................................................ E-4
E.5 POWER CONSUMPTION.....................................................................................................E-4
E.6 MONITOR CONTROL..........................................................................................................E-4
E. 7 CONNECTORS ..................................................................................................................... E-5
APPENDIX F 3DLABS OXYGEN GVX1 AGP GRAPHICS CARD ....................................................
F.1 INTRODUCTION .................................................................................................................. F-1
F.2 FUNCTIONAL DESCRIPTION............................................................................................. F-2
F.3 DISPLAY MODES ................................................................................................................ F-3
F.4 SOFTWARE SUPPORT ........................................................................................................ F-4
F.5 MONITOR POWER MANAGEMENT CONTROL ............................................................... F-4
F.6 CONNECTORS ..................................................................................................................... F-5
F.6.1 ANALOG MONITOR CONNECTOR............................................................................ F-5
F.6.2 DFP MONITOR CONNECTOR..................................................................................... F-6
F.6.3 STEREOGRAPHICS CONNECTOR.............................................................................. F-6
F.7 POWER CONSUMPTION..................................................................................................... F-6
Compaq Deskpro Personal Computers vii
First Edition - December 1999
Technical Reference Guide
APPENDIX G INTEL PRP/100+ MANAGEMENT ADAPTER...........................................................
G.1 INTRODUCTION ................................................................................................................. G-1
G.2 FUNCTIONAL DESCRIPTION............................................................................................ G-2
G.2.1 AOL FUNCTION.......................................................................................................... G-3
G.2.2 WAKE UP FUNCTION................................................................................................. G-3
G.3 POWER MANAGEMENT SUPPORT .................................................................................. G-4
G.3.1 APM ENVIRONMENT................................................................................................. G-4
G.3.2 ACPI ENVIRONMENT ................................................................................................ G-4
G.4 ADAPTER PROGRAMMING .............................................................................................. G-5
G.4.1 CONFIGURATION ....................................................................................................... G-5
G.4.2 CONTROL .................................................................................................................... G-5
G.5 NETWORK CONNECTOR .................................................................................................. G-6
G.6 ADAPTER SPECIFICATIONS............................................................................................. G-6
viii Compaq Deskpro Personal Computers
First Edition - December1999
Technical Reference Guide
LIST OF FIGURES
FIGURE 21. COMPAQ DESKPRO PERSONAL COMPUTERS WITH MONITORS .............................................. 2-1
FIGURE 22. COMPAQ DESKPRO EP AND WORKSTATION AP250 SERIES, FRONT VIEW............................ 2-4
FIGURE 23. COMPAQ DESKPRO EN AND WORKSTATION AP240 SERIES, FRONT VIEW........................... 2-5
FIGURE 24. COMPAQ DESKPRO EP SERIES, REAR VIEW........................................................................ 2-6
FIGURE 25. COMPAQ DESKPRO EN AND WORKSTATION AP240 SERIES, REAR VIEWS ........................... 2-7
FIGURE 26. COMPAQ DESKPRO WORKSTATION AP250 SERIES, REAR VIEW .......................................... 2-8
FIGURE 27. COMPAQ DESKPRO EP OR WORKSTATION AP250 CHASSIS LAYOUT, TOP VIEW (DESKTOP
CONFIGURATION) ........................................................................................................................... 2-9
FIGURE 28. COMPAQ DESKPRO EN SFF CHASSIS LAYOUT, TOP VIEW ................................................ 2-10
FIGURE 29. COMPAQ DESKPRO EN DESKTOP CHASSIS LAYOUT, TOP VIEW......................................... 2-11
FIGURE 210. COMPAQ DESKPRO EN MINITOWER CHASSIS LAYOUT, LEFT SIDE VIEW ......................... 2-12
FIGURE 211. COMPAQ DESKPRO EP SYSTEM BOARD LAYOUTS........................................................... 2-13
FIGURE 212. COMPAQ DESKPRO EN SFF BACKPLANE/SYSTEM BOARD LAYOUTS ............................... 2-14
FIGURE 213. COMPAQ DESKPRO EN DESKTOP/MINITOWER SYSTEM BOARD LAYOUTS........................ 2-15
FIGURE 214. COMPAQ DESKPRO EN DESKTOP/MINITOWER BACKPLANE BOARD LAYOUTS .................. 2-16
FIGURE 215. COMPAQ DESKPRO WORKSTATION SYSTEM BOARD LAYOUTS......................................... 2-17
FIGURE 216. CELERON PROCESSOR / 810 CHIPSET-BASED ARCHITECTURE, BLOCK DIAGRAM ................ 2-19
FIGURE 217. PENTIUM III PROCESSOR / 810E CHIPSET-BASED ARCHITECTURE, BLOCK DIAGRAM ......... 2-20
FIGURE 218. PENTIUM III PROCESSOR / 820 CHIPSET-BASED ARCHITECTURE, BLOCK DIAGRAM........... 2-21
FIGURE 219. CELERON PROCESSOR ASSEMBLY AND MOUNTING ........................................................ 2-22
FIGURE 220. PENTIUM III PROCESSOR ASSEMBLY AND MOUNTING..................................................... 2-23
FIGURE 31. 810/810E CHIPSET-BASED PROCESSOR/MEMORY SUBSYSTEM ARCHITECTURE .................... 3-2
FIGURE 32. CELERON PROCESSOR INTERNAL ARCHITECTURE ............................................................... 3-3
FIGURE 33. PENTIUM III PROCESSOR INTERNAL ARCHITECTURE........................................................... 3-4
FIGURE 34. SYSTEM MEMORY MAP..................................................................................................... 3-7
FIGURE 35. 820-BASED PROCESSOR/MEMORY SUBSYSTEM ARCHITECTURE .......................................... 3-9
FIGURE 36. SDRAM/RDRAM BANDWIDTH COMPARISON................................................................. 3-10
FIGURE 37. KEY RAMBUS CHANNEL ATTRIBUTES .............................................................................. 3-11
FIGURE 38. RAMBUS TRANSACTIONS................................................................................................. 3-12
FIGURE 4-1. PCI BUS DEVICES AND FUNCTIONS ..................................................................................... 4-2
FIGURE 4-2. TYPE 0 CONFIGURATION CYCLE......................................................................................... 4-4
FIGURE 4-3. PCI CONFIGURATION SPACE MAP ...................................................................................... 4-5
FIGURE 4-4. PCI BUS CONNECTOR (32-BIT TYPE) ................................................................................. 4-9
FIGURE 4-5. AGP 1X DATA TRANSFER (PEAK TRANSFER RATE: 266 MB/S)......................................... 4-11
FIGURE 4-6. AGP 2X DATA TRANSFER (PEAK TRANSFER RATE: 532 MB/S)......................................... 4-12
FIGURE 4-7. AGP 4X DATA TRANSFER (PEAK TRANSFER RATE: 1064 MB/S)....................................... 4-12
FIGURE 4-8. AGP BUS CONNECTOR .................................................................................................... 4-14
FIGURE 4-9. ISA BUS BLOCK DIAGRAM ................................................................................................ 4-15
FIGURE 4-10. ISA EXPANSION CONNECTOR ........................................................................................ 4-16
FIGURE 4-11. MASKABLE INTERRUPT PROCESSING, BLOCK DIAGRAM................................................... 4-22
FIGURE 4-12. CONFIGURATION MEMORY MAP..................................................................................... 4-28
FIGURE 4-13. FAN CONTROL BLOCK DIAGRAM..................................................................................... 4-41
Compaq Deskpro Personal Computers ix
First Edition - December 1999
Technical Reference Guide
FIGURE 5-1. 40-PIN IDE CONNECTOR.................................................................................................... 5-3
FIGURE 5-2. 50-PIN IDE CD-ROM CONNECTOR.................................................................................... 5-4
FIGURE 5-3. 34-PIN DISKETTE DRIVE CONNECTOR. ................................................................................ 5-8
FIGURE 5-4. SERIAL INTERFACE CONNECTOR (MALE DB-9 AS VIEWED FROM REAR OF CHASSIS) ............... 5-9
FIGURE 5-5. PARALLEL INTERFACE CONNECTOR (FEMALE DB-25 AS VIEWED FROM REAR OF CHASSIS).... 5-18
FIGURE 5-6. 8042-TO-KEYBOARD TRANSMISSION OF CODE EDH, TIMING DIAGRAM ............................. 5-19
FIGURE 5-7. KEYBOARD OR POINTING DEVICE INTERFACE CONNECTOR ................................................ 5-25
FIGURE 5-8. UNIVERSAL SERIAL BUS CONNECTOR (ONE OF TWO AS VIEWED FROM REAR OF CHASSIS) ...... 5-27
FIGURE 5-9. AUDIO SUBSYSTEM BLOCK DIAGRAM................................................................................ 5-29
FIGURE 5-10. AC'97 LINK BUS PROTOCOL .......................................................................................... 5-30
FIGURE 5-11. AD1881 AUDIO CODEC FUNCTIONAL BLOCK DIAGRAM................................................... 5-31
FIGURE 5-12. COMPAQ PREMIER SOUND SPEAKER ................................................................................ 5-32
FIGURE 5-13. WOL INTERFACE CONNECTION (GENERIC REPRESENTATION) .......................................... 5-35
FIGURE 5-14. AOL IMPLEMENTATION (GENERIC REPRESENTATION) ..................................................... 5-36
FIGURE 5-15. AOL LOGIC, BLOCK DIAGRAM ....................................................................................... 5-37
FIGURE 5-16. REMOTE SENSE ALERT IMPLEMENTATION (GENERIC REPRESENTATION) ........................... 5-38
FIGURE 5-17. RSA LOGIC, BLOCK DIAGRAM ....................................................................................... 5-38
FIGURE 5-18. 10/100 TX NETWORK INTERFACE CONTROLLER BLOCK DIAGRAM................................... 5-40
FIGURE 5-19. ETHERNET TPE CONNECTOR (RJ-45, VIEWED FROM CARD EDGE)..................................... 5-43
FIGURE 6-1. GMCH BLOCK DIAGRAM................................................................................................... 6-2
FIGURE 6-2. 810-/810E-BASED GRAPHICS SUBSYSTEM .......................................................................... 6-3
FIGURE 6-3. MATROX G400-BASED GRAPHICS SUBSYSTEM ................................................................... 6-5
FIGURE 71. POWER DISTRIBUTION AND CONTROL, BLOCK DIAGRAM..................................................... 7-1
FIGURE 72. DESKPRO EN SFF POWER CABLE DIAGRAM ...................................................................... 7-5
FIGURE 73. DESKPRO EP, EN DT/MT, OR WORKSTATION POWER CABLE DIAGRAM............................. 7-6
FIGURE 74. LOW VOLTAGE SUPPLY AND DISTRIBUTION DIAGRAM......................................................... 7-7
FIGURE 75. DESKPRO EP OR WORKSTATION AP250 SIGNAL DISTRIBUTION DIAGRAM........................... 7-8
FIGURE 76. DESKPRO EN SFF SIGNAL DISTRIBUTION DIAGRAM .......................................................... 7-9
FIGURE 77. DESKPRO EN DT/MT AND WORKSTATION AP240 SIGNAL DISTRIBUTION DIAGRAM......... 7-10
FIGURE 78. HEADER PINOUTS ........................................................................................................... 7-11
FIGURE B1. ASCII CHARACTER SET ................................................................................................... B-1
FIGURE C1. KEYSTROKE PROCESSING ELEMENTS, BLOCK DIAGRAM ....................................................C-2
FIGURE C2. KEYBOARD-TO-SYSTEM TRANSMISSION OF CODE 58H, TIMING DIAGRAM..........................C-3
FIGURE C3. U.S. ENGLISH (101-KEY) KEYBOARD KEY POSITIONS.......................................................C-4
FIGURE C4. NATIONAL (102-KEY) KEYBOARD KEY POSITIONS ............................................................C-4
FIGURE C5. U.S. ENGLISH WINDOWS (101W-KEY) KEYBOARD KEY POSITIONS ...................................C-5
FIGURE C6. NATIONAL WINDOWS (102W-KEY) KEYBOARD KEY POSITIONS ........................................C-5
FIGURE D-1. MATROX MILLENNIUM G400 GRAPHICS CARD AND G400 DVI CARD LAYOUTS ................ D-1
FIGURE D-2. MATROX MILLENNIUM G400 GRAPHICS CARD BLOCK DIAGRAM........................................ D-2
FIGURE D-3. VGA MONITOR CONNECTOR, (FEMALE DB-15, AS VIEWED FROM REAR). ........................... D-5
FIGURE E1. ELSA SYNERGY II AGP GRAPHICS CARD LAYOUT (COMPAQ SP# 103382-B21)................... 1
FIGURE E2. ELSA SYNERGY II AGP GRAPHICS CARD BLOCK DIAGRAM ................................................. 2
FIGURE E3. VGA MONITOR CONNECTOR, (FEMALE DB-15, AS VIEWED FROM REAR). .............................. 5
x Compaq Deskpro Personal Computers
First Edition - December1999
Technical Reference Guide
FIGURE F1. 3DLABS OXYGEN GVX1 AGP GRAPHICS CARD LAYOUT .................................................... F-1
FIGURE F2. 3DLABS OXYGEN GVX1 GRAPHICS CARD BLOCK DIAGRAM................................................ F-2
FIGURE F3. ANALOG MONITOR CONNECTOR, (FEMALE DB-15, AS VIEWED FROM REAR)......................... F-5
FIGURE F4. DFP MONITOR CONNECTOR, (FEMALE 20-PIN, AS VIEWED FROM REAR). .............................. F-6
FIGURE F5. STEREOGRAPHICS CONNECTOR, (AS VIEWED FROM REAR). ................................................... F-6
FIGURE G1. INTEL PRO/100+ MANAGEMENT ADAPTER CARD LAYOUT................................................ G-1
FIGURE G2. INTEL PRO/100+ MANAGEMENT ADAPTER BLOCK DIAGRAM............................................. G-2
FIGURE G3. ETHERNET TPE CONNECTOR (RJ-45, AS VIEWED FROM REAR). .......................................... G-5
Compaq Deskpro Personal Computers xi
First Edition - December 1999
Technical Reference Guide
LIST OF TABLES
TABLE 11. ACRONYMS AND ABBREVIATIONS....................................................................................... 1-3
TABLE 21. FEATURE DIFFERENCE MATRIX........................................................................................... 2-2
TABLE 22. ARCHITECTURAL COMPARISON ......................................................................................... 2-18
TABLE 23. CHIPSET COMPARISON ..................................................................................................... 2-24
TABLE 24. SUPPORT COMPONENT FUNCTIONS ................................................................................... 2-25
TABLE 25. GRAPHICS SUBSYSTEM COMPARISON ................................................................................ 2-26
TABLE 26. ENVIRONMENTAL SPECIFICATIONS.................................................................................... 2-27
TABLE 27. ELECTRICAL SPECIFICATIONS ........................................................................................... 2-27
TABLE 28. PHYSICAL SPECIFICATIONS ............................................................................................... 2-28
TABLE 29. DISKETTE DRIVE SPECIFICATIONS..................................................................................... 2-28
TABLE 210. 24X CD-ROM DRIVE SPECIFICATIONS.............................................................................. 2-29
TABLE 211. HARD DRIVE SPECIFICATIONS........................................................................................... 2-29
TABLE 31. CELERON PROCESSOR STATISTICAL COMPARISON ............................................................... 3-3
TABLE 32. PENTIUM III PROCESSOR STATISTICAL COMPARISON ........................................................... 3-4
TABLE 33. SPD ADDRESS MAP (SDRAM DIMM) .............................................................................. 3-6
TABLE 34. HOST/PCI BRIDGE CONFIGURATION REGISTERS (443BX, FUNCTION 0)................................ 3-8
TABLE 35. HOST/PCI BRIDGE CONFIGURATION REGISTERS (MCH, FUNCTION 0) ................................ 3-14
TABLE 4-1. PCI DEVICE CONFIGURATION ACCESS ................................................................................ 4-4
TABLE 4-2. SYSTEM BOARD PCI DEVICE IDENTIFICATION..................................................................... 4-5
TABLE 4-3. PCI BUS MASTERING DEVICES ........................................................................................... 4-6
TABLE 4-4. LPC BRIDGE CONFIGURATION REGISTERS (ICH, FUNCTION 0) ............................................ 4-8
TABLE 4-5. PCI BUS CONNECTOR PINOUT............................................................................................ 4-9
TABLE 4-6. PCI/AGP BRIDGE CONFIGURATION REGISTERS (MCH, FUNCTION 1)................................. 4-13
TABLE 4-7. AGP BUS CONNECTOR PINOUT ........................................................................................ 4-14
TABLE 4-8. ISA EXPANSION CONNECTOR PINOUT .............................................................................. 4-16
TABLE 4-9. DEFAULT DMA CHANNEL ASSIGNMENTS ......................................................................... 4-19
TABLE 4-10. DMA PAGE REGISTER ADDRESSES................................................................................... 4-20
TABLE 4-11. DMA CONTROLLER REGISTERS ....................................................................................... 4-21
TABLE 4-12. MASKABLE INTERRUPT PRIORITIES AND ASSIGNMENTS ..................................................... 4-23
TABLE 4-13. MASKABLE INTERRUPT CONTROL REGISTERS ................................................................... 4-23
TABLE 4-14. INTERVAL TIMER FUNCTIONS........................................................................................... 4-26
TABLE 4-15. INTERVAL TIMER CONTROL REGISTERS ............................................................................ 4-26
TABLE 4-16. CLOCK GENERATION AND DISTRIBUTION.......................................................................... 4-27
TABLE 4-17. CONFIGURATION MEMORY (CMOS) MAP ......................................................................... 4-29
TABLE 4-18. SYSTEM BOOT/ROM FLASH STATUS LED INDICATIONS ................................................... 4-40
TABLE 4-19. SYSTEM OPERATIONAL STATUS LED INDICATIONS ........................................................... 4-40
TABLE 4-20. SYSTEM I/O MAP ............................................................................................................ 4-42
TABLE 4-21. 82801 ICH GPIO REGISTER UTILIZATION........................................................................ 4-43
TABLE 4-22 LPC47B34X CONTROL REGISTERS ................................................................................... 4-44
TABLE 4-23. LPC47B34X GPIO REGISTER UTILIZATION...................................................................... 4-45
xii Compaq Deskpro Personal Computers
First Edition - December1999
Technical Reference Guide
TABLE 51. IDE PCI CONFIGURATION REGISTERS ................................................................................ 5-2
TABLE 52. IDE BUS MASTER CONTROL REGISTERS ............................................................................. 5-2
TABLE 53. 40-PIN IDE CONNECTOR PINOUT ....................................................................................... 5-3
TABLE 54. 50-PIN IDE CD-ROM CONNECTOR PINOUT ....................................................................... 5-4
TABLE 55. DISKETTE DRIVE CONTROLLER CONFIGURATION REGISTERS ............................................... 5-6
TABLE 56. DISKETTE DRIVE INTERFACE CONTROL REGISTERS ............................................................. 5-7
TABLE 57. 34-PIN DISKETTE DRIVE CONNECTOR PINOUT ..................................................................... 5-8
TABLE 58. DB-9 SERIAL CONNECTOR PINOUT...................................................................................... 5-9
TABLE 59. SERIAL INTERFACE CONFIGURATION REGISTERS................................................................ 5-10
TABLE 510. SERIAL INTERFACE CONTROL REGISTERS ........................................................................ 5-11
TABLE 511. PARALLEL INTERFACE CONFIGURATION REGISTERS......................................................... 5-14
TABLE 512. PARALLEL INTERFACE CONTROL REGISTERS .................................................................... 5-15
TABLE 513. DB-25 PARALLEL CONNECTOR PINOUT .......................................................................... 5-18
TABLE 514. 8042-TO-KEYBOARD COMMANDS .................................................................................. 5-20
TABLE 515. KEYBOARD INTERFACE CONFIGURATION REGISTERS ....................................................... 5-21
TABLE 516. CPU COMMANDS TO THE 8042...................................................................................... 5-23
TABLE 517. KEYBOARD/POINTING DEVICE CONNECTOR PINOUT ........................................................ 5-25
TABLE 518. USB INTERFACE CONFIGURATION REGISTERS ................................................................. 5-26
TABLE 519. USB CONTROL REGISTERS............................................................................................. 5-27
TABLE 520. USB CONNECTOR PINOUT.............................................................................................. 5-27
TABLE 521. AC'97 AUDIO CONTROLLER PCI CONFIGURATION REGISTERS ........................................ 5-33
TABLE 522. AC'97 AUDIO CODEC CONTROL REGISTERS .................................................................... 5-33
TABLE 523. AUDIO SUBSYSTEM SPECIFICATIONS ............................................................................... 5-34
TABLE 524. AOL EVENTS ................................................................................................................ 5-37
TABLE 525. REMOTE SYSTEM ALERT EVENTS ................................................................................... 5-39
TABLE 526. NIC CONTROLLER PCI CONFIGURATION REGISTERS ....................................................... 5-42
TABLE 527. NIC CONTROL REGISTERS ............................................................................................. 5-42
TABLE 528. 82559 NIC OPERATING SPECIFICATIONS ........................................................................ 5-43
TABLE 6-1. INTEL GRAPHICS DISPLAY MODES....................................................................................... 6-4
TABLE 6-2. MATROX G400 GRAPHICS DISPLAY MODES.......................................................................... 6-6
TABLE 6-3. PCI CONFIGURATION SPACE REGISTERS.............................................................................. 6-7
TABLE 6-4. STANDARD VGA MODE I/O MAPPING ................................................................................ 6-7
TABLE 6-5. MONITOR POWER MANAGEMENT CONDITIONS .................................................................... 6-8
TABLE 6-6. DB-15 MONITOR CONNECTOR PINOUT................................................................................ 6-8
TABLE 8-1. DESKTOP MANAGEMENT FUNCTIONS (INT15) ..................................................................... 8-4
TABLE 8-2. CMOS FEATURE BITS ...................................................................................................... 8-17
TABLE 8-3. PNP BIOS FUNCTIONS ..................................................................................................... 8-19
TABLE 8-4. APM BIOS FUNCTIONS (INT15) ...................................................................................... 8-23
TABLE A1. POWER-ON MESSAGES ..................................................................................................... A-1
TABLE A2. BEEP/KEYBOARD LED CODES.......................................................................................... A-1
TABLE A3. POWER-ON SELF TEST (POST) MESSAGES........................................................................ A-2
TABLE A4. PROCESSOR ERROR MESSAGES ......................................................................................... A-3
TABLE A5. MEMORY ERROR MESSAGES............................................................................................. A-4
TABLE A6. KEYBOARD ERROR MESSAGES.......................................................................................... A-4
TABLE A7. PRINTER ERROR MESSAGES.............................................................................................. A-5
TABLE A8. VIDEO (GRAPHICS) ERROR MESSAGES .............................................................................. A-5
TABLE A9. DISKETTE DRIVE ERROR MESSAGES.................................................................................. A-6
TABLE A10. SERIAL INTERFACE ERROR MESSAGES............................................................................. A-6
TABLE A11. SERIAL INTERFACE ERROR MESSAGES............................................................................. A-7
TABLE A12. SYSTEM STATUS ERROR MESSAGES ................................................................................ A-8
Compaq Deskpro Personal Computers xiii
First Edition - December 1999
Technical Reference Guide
TABLE A13. HARD DRIVE ERROR MESSAGES...................................................................................... A-8
TABLE A14. HARD DRIVE ERROR MESSAGES...................................................................................... A-9
TABLE A15. HARD DRIVE MESSAGES ................................................................................................. A-9
TABLE A16. AUDIO ERROR MESSAGES............................................................................................. A-10
TABLE A17. DVD/CD-ROM DRIVE ERROR MESSAGES .................................................................... A-10
TABLE A18. NETWORK INTERFACE ERROR MESSAGES ...................................................................... A-10
TABLE A19. SCSI INTERFACE ERROR MESSAGES ............................................................................. A-11
TABLE A20. POINTING DEVICE INTERFACE ERROR MESSAGES........................................................... A-11
TABLE A21. CEMM PRIVILEGED OPS ERROR MESSAGES.................................................................. A-12
TABLE A22. CEMM EXCEPTION ERROR MESSAGES ......................................................................... A-12
TABLE C1. KEYBOARD-TO-SYSTEM COMMANDS .................................................................................C-9
TABLE C2. KEYBOARD SCAN CODES.................................................................................................C-10
TABLE D-1. 2D GRAPHICS DISPLAY MODES ........................................................................................... D-3
TABLE D-2. MONITOR POWER MANAGEMENT CONDITIONS................................................................... D-4
TABLE D-3. DB-15 MONITOR CONNECTOR PINOUT.............................................................................. D-5
TABLE E1. GRAPHICS DISPLAY MODES .................................................................................................... 3
TABLE E2. MONITOR POWER MANAGEMENT CONDITIONS ...................................................................... 4
TABLE E3. DB-15 MONITOR CONNECTOR PINOUT ................................................................................. 5
TABLE F1. GRAPHICS DISPLAY MODES ................................................................................................ F-3
TABLE F2. MONITOR POWER MANAGEMENT CONDITIONS.................................................................... F-4
TABLE F3. DB-15 MONITOR CONNECTOR PINOUT............................................................................... F-5
TABLE G1. PCI CONFIGURATION REGISTERS ...................................................................................... G-5
TABLE G2. CONTROL REGISTERS ....................................................................................................... G-5
TABLE G3. ADAPTER SPECIFICATIONS ................................................................................................ G-6
xiv Compaq Deskpro Personal Computers
First Edition - December1999
Technical Reference Guide
Chapter 1
INTRODUCTION
Chapter 1 INTRODUCTION
1.
1.1 ABOUT THIS GUIDE
This guide provides technical information about Compaq Deskpro EP, Compaq Deskpro EN
Small Form Factor (SFF), Desktop (DT), Minitower (MT), and Compaq Deskpro Workstation
AP240 RAMBUS and AP250 Series of Personal Computers featuring Intel Celeron or Pentium
III processor and using the Intel 810, 810e, or 820 chipset. This document includes information
regarding system design, function, and features that can be used by programmers, engineers,
technicians, and system administrators.
This guide and any applicable addendums are available online at the following location:
| 009663-001
103382-B21
136397-B21
136398-B21
158358-B21
179161-001
327659-001
MR-1299A-WW
|
