HP Compaq D315 Use and care manual

technical reference guide
april 2003
Compaq D315 and hp d325 Personal Computers
This document provides information on the design, architecture, function, and
capabilities of the Compaq D315 and the HP d325 Personal Computers.
This information may be used by engineers, technicians, administrators, or
anyone needing detailed information on the products covered.
Document Part Number 322898-002
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This document is designed for printout in the 8 ½- x 11-inch format. The title block
below may can be copied and/or cut out and placed into a slip or taped onto the binder.
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Compaq D315 and hp d325 Personal Computers
featuring the AMD Athlon XP processor
and NVidia NForce chi
p
sets
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TRG

Technical Reference Guide
NOTICE
© 2003 Hewlett-Packard Company
HP, Hewlett-Packard, and the Hewlett-Packard logo are trademarks of the Hewlett-Packard Company in the U.S.
and other countries.
Compaq, the Compaq logo, and iPAQ are trademarks of Hewlett-Packard Development Company, L.P. in the U.S.
and other countries.
Microsoft, MS-DOS, Windows, Windows NT are trademarks of Microsoft Corporation in the United States and
other countries.
AMD, Athlon XP, and Duron are trademarks or registered trademarks of Advanced Micro Devices, Incorporated.
Intel, Pentium, Intel Inside, and Celeron are trademarks of Intel Corporation in the U. S. and/or other countries.
Adobe, Acrobat, and Acrobat Reader are trademarks or registered trademarks of Adobe Systems Incorporated.
All other product names mentioned herein may be trademarks of their respective companies.
Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein of for
incidental or consequential damages in connection with the furnishing, performance, or use of this material. The
information in this document is provided “as is” without warranty of any kind, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose, and is subject to change without notice.
The warranties for HP products are set forth in the express limited warranty statement accompanying such
products. Nothing herein should be construed as constituting an additional warranty.
This document contains proprietary information protected by copyright. No part of this document may be
photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard
Company.
CAUTION: Text set off in this manner indicates that failure to follow directions could
result in damage to equipment or loss of information.
!
NOTE: Text set off in this manner provides information that may be helpful or may
require deserves special attention by the reader.
Technical Reference Guide
For the
Compaq D315 and hp d325 Personal Computers
Second Edition - April 2003
Document Part Number 322898-002
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition - April 2003
i

Technical Reference Guide
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition –- April 2003
ii

Technical Reference Guide
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION ..................................................................................................................
1.1 ABOUT THIS GUIDE ................................................................................................................ 1-1
1.1.1 ONLINE VIEWING............................................................................................................ 1-1
1.1.2 HARDCOPY ....................................................................................................................... 1-1
1.2 ADDITIONAL INFORMATION SOURCES............................................................................. 1-2
1.3 MODEL NUMBERING CONVENTION ................................................................................... 1-2
1.3.1 COMPAQ MODEL NUMBERING CONVENTION......................................................... 1-2
1.3.2 hp MODEL NUMBERING CONVENTION...................................................................... 1-3
1.4 SERIAL NUMBER ..................................................................................................................... 1-3
1.5 NOTATIONAL CONVENTIONS.............................................................................................. 1-3
1.5.1 VALUES ............................................................................................................................. 1-4
1.5.2 RANGES ............................................................................................................................. 1-4
1.5.3 REGISTER NOTATION AND USAGE ............................................................................ 1-4
1.5.4 BIT NOTATION AND BYTE VALUES ........................................................................... 1-4
1.6 COMMON ACRONYMS AND ABBREVIATIONS ................................................................. 1-5
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 LAYOUT ........................................................................................................... 2-6
2.3.3 BOARD LAYOUTS ........................................................................................................... 2-7
2.4 SYSTEM ARCHITECTURE ...................................................................................................... 2-8
2.4.1 AMD ATHLON XP PROCESSOR .................................................................................. 2-10
2.4.2 CHIPSET........................................................................................................................... 2-11
2.4.3 SUPPORT COMPONENTS.............................................................................................. 2-11
2.4.4 SYSTEM MEMORY ........................................................................................................ 2-12
2.4.5 MASS STORAGE............................................................................................................. 2-12
2.4.6 SERIAL AND PARALLEL INTERFACES ..................................................................... 2-12
2.4.7 UNIVERSAL SERIAL BUS INTERFACE...................................................................... 2-12
2.4.8 NETWORK INTERFACE CONTROLLER..................................................................... 2-13
2.4.9 GRAPHICS SUBSYSTEM............................................................................................... 2-13
2.4.10 AUDIO SUBSYSTEM...................................................................................................... 2-14
2.5 SPECIFICATIONS ................................................................................................................... 2-14
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition - April 2003
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Technical Reference Guide
CHAPTER 3 PROCESSOR/MEMORY SUBSYSTEM.............................................................................
3.1 INTRODUCTION....................................................................................................................... 3-1
3.2 ATHLON XP PROCESSOR ....................................................................................................... 3-2
3.2.1 PROCESSOR OVERVIEW ................................................................................................ 3-2
3.2.2 PROCESSOR UPGRADING.............................................................................................. 3-4
3.3 MEMORY SUBSYSTEM........................................................................................................... 3-5
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 INTERRUPTS.............................................................................................................. 4-7
4.2.5 PCI POWER MANAGEMENT SUPPORT........................................................................ 4-7
4.2.6 PCI SUB-BUSSES .............................................................................................................. 4-7
4.2.7 PCI CONNECTOR ............................................................................................................. 4-8
4.3 AGP BUS OVERVIEW .............................................................................................................. 4-9
4.3.1 BUS TRANSACTIONS...................................................................................................... 4-9
4.3.2 AGP CONNECTOR.......................................................................................................... 4-13
4.4 SYSTEM RESOURCES ........................................................................................................... 4-14
4.4.1 INTERRUPTS................................................................................................................... 4-14
4.4.2 DIRECT MEMORY ACCESS.......................................................................................... 4-18
4.5 SYSTEM CLOCK DISTRIBUTION ........................................................................................ 4-21
4.6 REAL-TIME CLOCK AND CONFIGURATION MEMORY.................................................. 4-22
4.6.1 CLEARING CMOS........................................................................................................... 4-22
4.6.2 CMOS ARCHIVE AND RESTORE................................................................................. 4-23
4.6.3 STANDARD CMOS LOCATIONS ................................................................................. 4-23
4.7 SYSTEM MANAGEMENT...................................................................................................... 4-24
4.7.1 SECURITY FUNCTIONS ................................................................................................ 4-24
4.7.2 POWER MANAGEMENT ............................................................................................... 4-26
4.7.3 SYSTEM STATUS ........................................................................................................... 4-26
4.7.4 THERMAL SENSING AND COOLING ......................................................................... 4-27
4.8 REGISTER MAP AND MISCELLANEOUS FUNCTIONS .................................................... 4-30
4.8.1 SYSTEM I/O MAP ........................................................................................................... 4-30
4.8.2 LPC47B367 I/O CONTROLLER FUNCTIONS .............................................................. 4-31
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Featuring the AMD Athlon XP Processor
Second Edition –- April 2003
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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 .............................................................................................. 5-4
5.3.1 DISKETTE DRIVE PROGRAMMING.............................................................................. 5-5
5.3.2 DISKETTE DRIVE CONNECTOR ................................................................................... 5-7
5.4 SERIAL INTERFACE ................................................................................................................ 5-8
5.4.1 SERIAL CONNECTOR...................................................................................................... 5-8
5.4.2 SERIAL INTERFACE PROGRAMMING......................................................................... 5-9
5.5 PARALLEL INTERFACE........................................................................................................ 5-11
5.5.1 STANDARD PARALLEL PORT MODE ........................................................................ 5-11
5.5.2 ENHANCED PARALLEL PORT MODE........................................................................ 5-12
5.5.3 EXTENDED CAPABILITIES PORT MODE .................................................................. 5-12
5.5.4 PARALLEL INTERFACE PROGRAMMING ................................................................ 5-13
5.5.5 PARALLEL INTERFACE CONNECTOR ...................................................................... 5-15
5.6 KEYBOARD/POINTING DEVICE INTERFACE................................................................... 5-16
5.6.1 KEYBOARD INTERFACE OPERATION ...................................................................... 5-16
5.6.2 POINTING DEVICE INTERFACE OPERATION .......................................................... 5-18
5.6.3 KEYBOARD/POINTING DEVICE INTERFACE PROGRAMMING .......................... 5-18
5.6.4 KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR ................................. 5-21
5.7 UNIVERSAL SERIAL BUS INTERFACE .............................................................................. 5-22
5.7.1 USB DATA FORMATS ................................................................................................... 5-23
5.7.2 USB PROGRAMMING .................................................................................................... 5-24
5.7.3 USB CONNECTOR.......................................................................................................... 5-25
5.7.4 USB CABLE DATA ......................................................................................................... 5-25
5.8 AUDIO SUBSYSTEM.............................................................................................................. 5-26
5.8.1 FUNCTIONAL ANALYSIS............................................................................................. 5-26
5.8.2 AC97 AUDIO CONTROLLER ........................................................................................ 5-28
5.8.3 AC97 LINK BUS .............................................................................................................. 5-28
5.8.4 AUDIO CODEC................................................................................................................ 5-29
5.8.5 AUDIO PROGRAMMING............................................................................................... 5-30
5.8.6 AUDIO SPECIFICATIONS ............................................................................................. 5-31
5.9 NETWORK INTERFACE CONTROLLER ............................................................................. 5-32
5.9.1 WAKE ON LAN SUPPORT............................................................................................. 5-33
5.9.2 ALERT ON LAN SUPPORT............................................................................................ 5-33
5.9.3 POWER MANAGEMENT SUPPORT............................................................................. 5-34
5.9.4 NIC PROGRAMMING..................................................................................................... 5-35
5.9.5 NIC CONNECTOR........................................................................................................... 5-36
5.9.6 NIC SPECIFICATIONS ................................................................................................... 5-36
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Featuring the AMD Athlon XP Processor
Second Edition - April 2003
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CHAPTER 6 INTREGRATED GRAPHICS SUBSYSTEM......................................................................
6.1 INTRODUCTION....................................................................................................................... 6-1
6.2 FUNCTIONAL DESCRIPTION................................................................................................. 6-2
6.3 DISPLAY MODES ..................................................................................................................... 6-4
6.4 PROGRAMMING....................................................................................................................... 6-5
6.5 UPGRADING IGP-BASED GRAPHICS ................................................................................... 6-5
6.6 VGA MONITOR CONNECTOR................................................................................................ 6-6
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
7.2.3 POWER MANAGEMENT ................................................................................................. 7-5
7.3 POWER DISTRIBUTION .......................................................................................................... 7-6
7.3.1 3.3/5/12 VDC DISTRIBUTION.......................................................................................... 7-6
7.3.2 LOW VOLTAGE PRODUCTION/DISTRIBUTION ........................................................ 7-8
7.4 SIGNAL DISTRIBUTION.......................................................................................................... 7-9
CHAPTER 8 SYSTEM BIOS .......................................................................................................................
8.1 INTRODUCTION....................................................................................................................... 8-1
8.2 ROM FLASHING/UPGRADING............................................................................................... 8-2
8.3 BOOT FUNCTIONS................................................................................................................... 8-3
8.3.1 BOOT DEVICE ORDER .................................................................................................... 8-3
8.3.2 NETWORK BOOT (F12) SUPPORT................................................................................. 8-3
8.3.3 MEMORY DETECTION AND CONFIGURATION ........................................................ 8-4
8.3.4 BOOT ERROR CODES...................................................................................................... 8-4
8.4 SETUP UTILITY ........................................................................................................................ 8-5
8.5 CLIENT MANAGEMENT FUNCTIONS ................................................................................ 8-11
8.5.1 SYSTEM ID AND ROM TYPE ....................................................................................... 8-13
8.5.2 EDID RETRIEVE ............................................................................................................. 8-13
8.5.3 TEMPERATURE STATUS .............................................................................................. 8-14
8.5.4 DRIVE FAULT PREDICTION ........................................................................................ 8-14
8.6 POWER MANAGEMENT FUNCTIONS ................................................................................ 8-14
8.6.1 INDEPENDENT PM SUPPORT (D315 only) ................................................................. 8-14
8.6.2 ACPI SUPPORT ............................................................................................................... 8-16
8.7 USB LEGACY SUPPORT ........................................................................................................ 8-16
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APPENDIX A ERROR MESSAGES AND CODES............................................................................ A-1
A.1 INTRODUCTION...................................................................................................................... A-1
A.2 BEEP/KEYBOARD LED CODES............................................................................................. A-1
A.3 POWER-ON SELF TEST (POST) MESSAGES........................................................................ A-2
A.4 SYSTEM 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
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 PS/2-TYPE KEYBOARD TRANSMISSIONS ..................................................................C-3
C.2.2 USB-TYPE KEYBOARD TRANSMISSIONS ..................................................................C-4
C.2.3 KEYBOARD LAYOUTS ...................................................................................................C-5
C.2.4 KEYS...................................................................................................................................C-8
C.2.5 KEYBOARD COMMANDS ............................................................................................C-11
C.2.6 SCAN CODES ..................................................................................................................C-11
C.3 CONNECTORS ........................................................................................................................C-16
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APPENDIX D COMPAQ/INTEL NETWORK INTERFACE CONTROLLER ADAPTERS ..............
D.1 INTRODUCTION...................................................................................................................... D-1
D.2 FUNCTIONAL DESCRIPTION................................................................................................ D-2
D.2.1 AOL FUNCTION............................................................................................................... D-3
D.2.2 WAKE UP FUNCTIONS................................................................................................... D-3
D.2.3 IPSEC FUNCTION ............................................................................................................ D-4
D.3 POWER MANAGEMENT SUPPORT ...................................................................................... D-5
D.3.1 APM ENVIRONMENT ..................................................................................................... D-5
D.3.2 ACPI ENVIRONMENT..................................................................................................... D-5
D.4 ADAPTER PROGRAMMING.................................................................................................. D-6
D.4.1 CONFIGURATION ........................................................................................................... D-6
D.4.2 CONTROL .........................................................................................................................D-6
D.5 NETWORK CONNECTOR....................................................................................................... D-7
D.6 ADAPTER SPECIFICATIONS ................................................................................................. D-7
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LIST OF FIGURES
FIGURE 2-1. COMPAQ D315 AND HP D325 PERSONAL COMPUTERS ............................................................ 2-1
FIGURE 2-2. CABINET LAYOUT,FRONT VIEWS ........................................................................................... 2-4
FIGURE 2-3. CABINET LAYOUT ,REAR VIEWS ............................................................................................ 2-5
FIGURE 2-4. CHASSIS LAYOUT,LEFT SIDE VIEW ......................................................................................... 2-6
FIGURE 2-5. SYSTEM BOARD LAYOUTS....................................................................................................... 2-7
FIGURE 2-6. SYSTEM ARCHITECTURE,BLOCK DIAGRAM ........................................................................... 2-9
FIGURE 2-7. HEAT SINK,PROCESSOR,AND SOCKET ASSEMBLIES............................................................. 2-10
FIGURE 3–1. PROCESSOR/MEMORY SUBSYSTEM ARCHITECTURE............................................................... 3-1
FIGURE 3–2. AMD ATHLON XP PROCESSOR INTERNAL ARCHITECTURE AND KEY STATISTICS. ................ 3-3
FIGURE 3–3. SYSTEM MEMORY MAP.......................................................................................................... 3-7
FIGURE 4-1. PCI BUS DEVICES AND FUNCTIONS ......................................................................................... 4-2
FIGURE 4-2. CONFIGURATION CYCLE ......................................................................................................... 4-4
FIGURE 4-3. PCI CONFIGURATION SPACE MAPPING ................................................................................... 4-5
FIGURE 4-4. PCI BUS CONNECTOR (32-BIT TYPE)...................................................................................... 4-8
FIGURE 4-5. AGP 1X DATA TRANSFER (PEAK TRANSFER RATE:266 MB/S) ........................................... 4-10
FIGURE 4-6. AGP 2X DATA TRANSFER (PEAK TRANSFER RATE:532 MB/S) ........................................... 4-11
FIGURE 4-7. AGP 4X DATA TRANSFER (PEAK TRANSFER RATE:1064 MB/S) ......................................... 4-11
FIGURE 4-8. AGP 8X DATA TRANSFER (PEAK TRANSFER RATE:2128 MB/S) ......................................... 4-12
FIGURE 4-9. AGP BUS CONNECTOR ......................................................................................................... 4-13
FIGURE 4-10. MASKABLE INTERRUPT PROCESSING,BLOCK DIAGRAM..................................................... 4-14
FIGURE 4-11. CONFIGURATION MEMORY MAP......................................................................................... 4-22
FIGURE 4-12. D315 MODEL FAN CONTROL BLOCK DIAGRAM .................................................................. 4-28
FIGURE 4-13. D325 MODEL FAN CONTROL FUNCTIONAL BLOCK DIAGRAM ............................................. 4-29
FIGURE 5-1. 40-PIN PRIMARY IDE CONNECTOR (ON SYSTEM BOARD)........................................................ 5-3
FIGURE 5-2. 34-PIN DISKETTE DRIVE CONNECTOR. ................................................................................... 5-7
FIGURE 5-3. SERIAL INTERFACE CONNECTOR (MALE DB-9 AS VIEWED FROM REAR OF CHASSIS) .............. 5-8
FIGURE 5-4. PARALLEL INTERFACE CONNECTOR (FEMALE DB-25 AS VIEWED FROM REAR OF CHASSIS).. 5-15
FIGURE 5-5. 8042-TO-KEYBOARD TRANSMISSION OF CODE EDH,TIMING DIAGRAM.............................. 5-16
FIGURE 5-6. KEYBOARD OR POINTING DEVICE INTERFACE CONNECTOR.................................................. 5-21
FIGURE 5-7. USB I/F BLOCK DIAGRAM AND DIFFERENCE MATRIX.......................................................... 5-22
FIGURE 5-8. USB PACKET FORMATS ........................................................................................................ 5-23
FIGURE 5-9. UNIVERSAL SERIAL BUS CONNECTOR .................................................................................. 5-25
FIGURE 5-10. AUDIO SUBSYSTEM FUNCTIONAL BLOCK DIAGRAM........................................................... 5-27
FIGURE 5-11. AC’97 LINK BUS PROTOCOL .............................................................................................. 5-28
FIGURE 5-12. AUDIO CODEC FUNCTIONAL BLOCK DIAGRAM AND DIFFERENCE MATRIX ........................ 5-29
FIGURE 5-13. NETWORK INTERFACE CONTROLLER BLOCK DIAGRAM...................................................... 5-32
FIGURE 5-14. ETHERNET TPE CONNECTOR (RJ-45, VIEWED FROM CARD EDGE) ...................................... 5-36
FIGURE 6-1. IGP-BASED GRAPHICS,BLOCK DIAGRAM............................................................................... 6-2
FIGURE 6-2. IGP GRAPHICS CONTROLLER BLOCK DIAGRAM AND DIFFERENCE MATRIX............................ 6-3
FIGURE 6-3. VGA MONITOR CONNECTOR,(FEMALE DB-15, AS VIEWED FROM REAR). ............................... 6-6
FIGURE 7-1. POWER DISTRIBUTION AND CONTROL,BLOCK DIAGRAM......................................................... 7-1
FIGURE 7-2. D315 MODEL POWER CABLE DIAGRAM .................................................................................. 7-6
FIGURE 7-3. D325 MODEL POWER CABLE DIAGRAM .................................................................................. 7-7
FIGURE 7-4. LOW VOLTAGE SUPPLY AND DISTRIBUTION DIAGRAM........................................................... 7-8
FIGURE 7-5. SIGNAL DISTRIBUTION DIAGRAM ........................................................................................... 7-9
FIGURE 7-6. MISCELLANEOUS HEADER PINOUTS...................................................................................... 7-10
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FIGURE C–1. KEYSTROKE PROCESSING ELEMENTS,BLOCK DIAGRAM.......................................................C-2
FIGURE C–2. PS/2 KEYBOARD-TO-SYSTEM TRANSMISSION,TIMING DIAGRAM ........................................C-3
FIGURE C–3. U.S. ENGLISH (101-KEY)KEYBOARD KEY POSITIONS ..........................................................C-5
FIGURE C–4. NATIONAL (102-KEY)KEYBOARD KEY POSITIONS ...............................................................C-5
FIGURE C–5. U.S. ENGLISH WINDOWS (101W-KEY)KEYBOARD KEY POSITIONS .....................................C-6
FIGURE C–6. NATIONAL WINDOWS (102W-KEY)KEYBOARD KEY POSITIONS ..........................................C-6
FIGURE C–7. 7-BUTTON EASY ACCESS KEYBOARD LAYOUT .....................................................................C-7
FIGURE C–8. 8-BUTTON EASY ACCESS KEYBOARD LAYOUT .....................................................................C-7
FIGURE C–9. PS/2 KEYBOARD CABLE CONNECTOR (MALE) ....................................................................C-16
FIGURE C–10. USB KEYBOARD CABLE CONNECTOR (MALE)..................................................................C-16
FIGURE D-1. INTEL PRO/100+ OR PRO/100 SMANAGEMENT ADAPTER CARD LAYOUT ........................... D-1
FIGURE D-2. INTEL PRP/100+ MANAGEMENT ADAPTER,BLOCK DIAGRAM .............................................. D-2
FIGURE D-3. ETHERNET TPE CONNECTOR (RJ-45, VIEWED FROM CARD EDGE)........................................ D-7
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LIST OF TABLES
TABLE 1–1. ACRONYMS AND ABBREVIATIONS ........................................................................................... 1-5
TABLE 2-1. FEATURE DIFFERENCE MATRIX ................................................................................................. 2-2
TABLE 2-2. FEATURE DIFFERENCE MATRIX ................................................................................................. 2-8
TABLE 2-3. CHIPSET FUNCTIONS................................................................................................................ 2-11
TABLE 2-4. SUPPORT COMPONENT FUNCTIONS.......................................................................................... 2-11
TABLE 2-5. STANDARD GRAPHICS SUBSYSTEM COMPARISON................................................................... 2-13
TABLE 2-6. ENVIRONMENTAL SPECIFICATIONS .......................................................................................... 2-14
TABLE 2-7. ELECTRICAL SPECIFICATIONS .................................................................................................. 2-14
TABLE 2-8. PHYSICAL SPECIFICATIONS ...................................................................................................... 2-15
TABLE 2-9. DISKETTE DRIVE SPECIFICATIONS ........................................................................................... 2-15
TABLE 2-10. OPTICAL DRIVE SPECIFICATIONS........................................................................................... 2-16
TABLE 2-11. HARD DRIVE SPECIFICATIONS ............................................................................................... 2-16
TABLE 3–1. SPD ADDRESS MAP (SDRAM DIMM) .................................................................................... 3-6
TABLE 4-1. PCI DEVICE CONFIGURATION ACCESS..................................................................................... 4-4
TABLE 4-2. PCI BUS MASTERING DEVICES ................................................................................................ 4-6
TABLE 4-3. PCI BUS CONNECTOR PINOUT ................................................................................................... 4-8
TABLE 4-4. AGP BUS CONNECTOR PINOUT .............................................................................................. 4-13
TABLE 4-5. MASKABLE INTERRUPT PRIORITIES AND ASSIGNMENTS......................................................... 4-15
TABLE 4-6. MASKABLE INTERRUPT CONTROL REGISTERS........................................................................ 4-16
TABLE 4-7. DEFAULT DMA CHANNEL ASSIGNMENTS.............................................................................. 4-18
TABLE 4-8. DMA PAGE REGISTER ADDRESSES ........................................................................................ 4-19
TABLE 4-9. DMA CONTROLLER REGISTERS ............................................................................................. 4-20
TABLE 4-10. CLOCK GENERATION AND DISTRIBUTION ............................................................................ 4-21
TABLE 4-11. CONFIGURATION MEMORY (CMOS) MAP ........................................................................... 4-23
TABLE 4-12. SYSTEM BOOT/ROM FLASH STATUS LED INDICATIONS ...................................................... 4-26
TABLE 4-13. SYSTEM OPERATIONAL STATUS LED INDICATION................................................................ 4-27
TABLE 4-14. SYSTEM I/O MAP ................................................................................................................. 4-30
TABLE 4-15 LPC47B367 I/O CONTROLLER REGISTERS ............................................................................ 4-31
TABLE 5–1. IDE PCI CONFIGURATION REGISTERS..................................................................................... 5-2
TABLE 5–2. IDE BUS MASTER CONTROL REGISTERS ................................................................................. 5-2
TABLE 5–3. 40-PIN PRIMARY IDE CONNECTOR PINOUT ............................................................................ 5-3
TABLE 5–4. DISKETTE DRIVE CONTROLLER CONFIGURATION REGISTERS ................................................. 5-5
TABLE 5–5. DISKETTE DRIVE INTERFACE CONTROL REGISTERS ................................................................ 5-6
TABLE 5–6. 34-PIN DISKETTE DRIVE CONNECTOR PINOUT ........................................................................ 5-7
TABLE 5–7. DB-9 SERIAL CONNECTOR PINOUT ......................................................................................... 5-8
TABLE 5–8. SERIAL INTERFACE CONFIGURATION REGISTERS .................................................................... 5-9
TABLE 5–9. SERIAL INTERFACE CONTROL REGISTERS.............................................................................. 5-10
TABLE 5–10. PARALLEL INTERFACE CONFIGURATION REGISTERS ........................................................... 5-13
TABLE 5–11. PARALLEL INTERFACE CONTROL REGISTERS ...................................................................... 5-14
TABLE 5–12. DB-25 PARALLEL CONNECTOR PINOUT .............................................................................. 5-15
TABLE 5–13. 8042-TO-KEYBOARD COMMANDS ...................................................................................... 5-17
TABLE 5–14. KEYBOARD INTERFACE CONFIGURATION REGISTERS.......................................................... 5-18
TABLE 5–15. CPU COMMANDS TO THE 8042........................................................................................... 5-20
TABLE 5–16. KEYBOARD/POINTING DEVICE CONNECTOR PINOUT........................................................... 5-21
TABLE 5–17. USB INTERFACE CONFIGURATION REGISTERS .................................................................... 5-24
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TABLE 5–18. USB CONTROL REGISTERS.................................................................................................. 5-24

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TABLE 5–19. USB CONNECTOR PINOUT................................................................................................... 5-25
TABLE 5–20. USB CABLE LENGTH DATA ................................................................................................ 5-25
TABLE 5–21. AC’97 AUDIO CONTROLLER PCI CONFIGURATION REGISTERS........................................... 5-30
TABLE 5–22. AC’97 AUDIO CODEC CONTROL REGISTERS ....................................................................... 5-30
TABLE 5–23. AUDIO SUBSYSTEM SPECIFICATIONS ................................................................................... 5-31
TABLE 5–24. AOL EVENTS ...................................................................................................................... 5-33
TABLE 5–25. NIC CONTROLLER PCI CONFIGURATION REGISTERS .......................................................... 5-35
TABLE 5–26. NIC CONTROL REGISTERS................................................................................................... 5-35
TABLE 5–27. 82559 NIC OPERATING SPECIFICATIONS............................................................................. 5-36
TABLE 6-1. 845G-BASED GRAPHICS DISPLAY MODES ............................................................................... 6-4
TABLE 6-2. 815E-BASED GRAPHICS CONTROLLER PCI CONFIGURATION REGISTERS ................................ 6-5
TABLE 6-3. DB-15 MONITOR CONNECTOR PINOUT...................................................................................... 6-6
TABLE 7-1. 220-WATT POWER SUPPLY ASSEMBLY SPECIFICATIONS .......................................................... 7-2
TABLE 7-2. 240-WATT POWER SUPPLY ASSEMBLY SPECIFICATIONS ......................................................... 7-2
TABLE 7-3. SYSTEM POWER STATES........................................................................................................... 7-5
TABLE 8-1. BOOT BLOCK CODES ................................................................................................................. 8-2
TABLE 8-2. BOOT ERROR CODES.................................................................................................................. 8-4
TABLE 8-3. SETUP UTILITY FUNCTIONS...................................................................................................... 8-5
TABLE 8-4. CLIENT MANAGEMENT FUNCTIONS (INT15) ......................................................................... 8-11
TABLE A–1. BEEP/KEYBOARD LED CODES .............................................................................................. A-1
TABLE A–2. POWER-ON SELF TEST (POST) MESSAGES ........................................................................... A-2
TABLE A–3. SYSTEM ERROR MESSAGES ................................................................................................... A-3
TABLE A–4. MEMORY ERROR MESSAGES ................................................................................................. A-4
TABLE A–5. KEYBOARD ERROR MESSAGES .............................................................................................. A-4
TABLE A–6. PRINTER ERROR MESSAGES................................................................................................... A-5
TABLE A–7. VIDEO (GRAPHICS)ERROR MESSAGES .................................................................................. A-5
TABLE A–8. DISKETTE DRIVE ERROR MESSAGES ..................................................................................... A-6
TABLE A–9. SERIAL INTERFACE ERROR MESSAGES .................................................................................. A-6
TABLE A–10. SERIAL INTERFACE ERROR MESSAGES ................................................................................ A-7
TABLE A–11. SYSTEM STATUS ERROR MESSAGES .................................................................................... A-8
TABLE A–12. HARD DRIVE ERROR MESSAGES.......................................................................................... A-8
TABLE A–13. HARD DRIVE ERROR MESSAGES.......................................................................................... A-9
TABLE A–14. VIDEO (GRAPHICS)ERROR MESSAGES ................................................................................ A-9
TABLE A–15. AUDIO ERROR MESSAGES ................................................................................................. A-10
TABLE A–16. DVD/CD-ROM DRIVE ERROR MESSAGES........................................................................ A-10
TABLE A–17. NETWORK INTERFACE ERROR MESSAGES ......................................................................... A-10
TABLE A–18. SCSI INTERFACE ERROR MESSAGES ................................................................................. A-11
TABLE A–19. POINTING DEVICE INTERFACE ERROR MESSAGES ............................................................. A-11
TABLE B-1. ASCII CHARACTER SET............................................................................................................B-1
TABLE C–1. KEYBOARD-TO-SYSTEM COMMANDS ...................................................................................C-11
TABLE C–2. KEYBOARD SCAN CODES......................................................................................................C-12
TABLE D-1. NIC CONTROLLER PCI CONFIGURATION REGISTERS ............................................................ D-6
TABLE D-2. NIC CONTROL REGISTERS ..................................................................................................... D-6
TABLE D-3. ADAPTER OPERATING SPECIFICATIONS ................................................................................... D-7

Technical Reference Guide
Chapter 1
INTRODUCTION
1. Chapter 1 INTRODUCTION
1.1 ABOUT THIS GUIDE
This guide provides technical information about Compaq D315 and the HP d325 personal
computers, both which feature the AMD Athlon XP processor and an NVidia NForce series
chipset. This document describes in detail the system’s design and operation for programmers,
engineers, technicians, and system administrators, as well as end-users wanting detailed
information.
The chapters of this guide primarily describe the hardware and firmware elements and primarily
deal with the system board and the power supply assembly. The appendices contain general data
such as error codes and information about standard peripheral devices such as keyboards, graphics
cards, and communications adapters.
This guide can be used either as an online document or in hardcopy form.
1.1.1 ONLINE VIEWING
Online viewing allows for quick navigating and convenient searching through the document. A
color monitor will also allow the user to view the color shading used to highlight differential data.
A softcopy of the latest edition of this guide is available for downloading in .pdf file format at the
URL listed below:
http://www3.compaq.com/support/home/selectproduct.asp?destination+reflib&pid+-1
Viewing the file requires a copy of Adobe Acrobat Reader available at no charge from Adobe
Systems, Inc. at the following URL:
http://www.adobe.com
When viewing with Adobe Acrobat Reader, click on the ( ) icon or "Bookmarks" tab to
display the navigation pane for quick access to particular places in the guide.
1.1.2 HARDCOPY
A hardcopy of this guide may be obtained by printing from the .pdf file. The document is
designed for printing in an 8 ½ x 11-inch format. Note that printing in black and white will lose
color shading used in some illustrations and tables.
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Chapter 1 Introduction
1.2 ADDITIONAL INFORMATION SOURCES
For more information on components mentioned in this guide refer to the indicated
manufacturers’ documentation, which may be available at the following online sources:
♦Hewlett-Packard Company: http://www.hp.com
♦Advanced Micro Devices, Inc: http://www.amd.com
♦NVIDIA Corporation: http://www.nvidia.com
♦Standard Microsystems Corporation: http://www.smsc.com
♦Texas Instruments Inc.: http://www.ti.com
♦USB user group: http://www.usb.org
1.3 MODEL NUMBERING CONVENTION
Two model numbering conventions (one for Compaq, one for HP) are used for the systems
covered in this guide.
1.3.1 COMPAQ MODEL NUMBERING CONVENTION
The model numbering convention for Compaq systems is as follows:
XXX/XNN/NN/N/NNNx
Removable storage: b = CD/CDRW, c = CD, d = DVD, r = CDRW, z = ZIP
Memory (in MB)
OS type: 2 = Windows 2000, 6 = Dual install, Windows NT 4.0 or 2000,
8 = Windows 98SE, P = Dual install Windows XP Pro/2000
Hard drive size (in GB)
Processor speed (2 digits in GHz)
Processor type: A = AMD Athlon XP
Form factor: D = desktop, m = Microtower, C = Convertible minitower
Model: D3 = D300 series
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1.3.2 hp MODEL NUMBERING CONVENTION
The model numbering convention for HP systems is as follows:
dNNNsm/A2.06/NNNb+nyr/NNNX/XX1tNL
Security: Blank = mot included, L = Solenoid hood lock, K = TCPA chip, P = port control
NIC or Modem: N = NIC, M = modem, C = Combo N/M, Blank = integrated
Software Apps: o = Office XP Pro, t = Office XP Presonal, e = Office XP SBE
W = MS Word (EMEA only), u = MS Works 2003 (NA only)
OS: 1 – Linux, 2 = Win2000, 3 = XP Home, 4 = XP Pro
Graphics: Blank = integrated, v = DVI add in card, AA = GFrc2 MX200 64 MB,
AB = GFrc2 MX400 32 MB, AE = GFrc4 MX420 64 MB,
AF = Quadro4 200NVS, AG = Quadro4 400NVS,
AH = Quadro4 100NVS VGA, AJ = Quadro4 100NVA DVI,
AQ = GFrc4 MX440 64 MB
Memory speed: B = DDR266 single channel, C = DDR266 dual channel,
D = DDR333 single channel, E = DDR333 dual channel,
F = DDR400 single channel, G = DDR400 dual channel
Memory Amount: 3 digits, MB; 2 digits, GB
Removable storage: c = CD-ROM, d = DVD-ROM, q = DVD+RW, r = CDRW,
w = DVD/CDRW combo, z = ZIP drive, y = drive key,
n = no diskette drive, x = no removable storage, blank = diskette
2nd Hard drive (if installed)
Hard drive speed: a = 5400 rpm, b = 7200 rpm
Hard drive size (in GB)
Processor speed (2 or 3 digits in GHz)
Processor type: A = AMD Athlon XP
Form factor: D = desktop, m = Microtower, C = Convertible minitower
s = MS office software
Model: 325 = d325 series
1.4 SERIAL NUMBER
The unit’s serial number is located on a sticker placed on the exterior cabinet. The serial number
may also be read with the Compaq Diagnostics or Compaq Insight Manager utilities.
1.5 NOTATIONAL CONVENTIONS
The notational guidelines used in this guide are described in the following subsections.
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Chapter 1 Introduction
1.5.1 VALUES
Hexadecimal values are indicated by a numerical or alpha-numerical value followed by the letter
“h.” Binary values are indicated by a value of ones and zeros followed by the letter “b.”
Numerical values that have no succeeding letter can be assumed to be decimal unless otherwise
stated.
1.5.2 RANGES
Ranges or limits for a parameter are shown using the following methods:
Example A: Bits <7..4> = bits 7, 6, 5, and 4.
Example B: IRQ3-7, 9 = IRQ signals 3 through 7, and IRQ signal 9
1.5.3 REGISTER NOTATION AND USAGE
This guide uses standard Intel naming conventions in discussing the microprocessor’s (CPU)
internal registers. Registers that are accessed through programmable I/O using an indexing
scheme are indicated using the following format:
03C5.17h
Index port
Data port
In the example above, register 03C5.17h is accessed by writing the index port value 17h to the
index address (03C4h), followed by a write to or a read from port 03C5h.
1.5.4 BIT NOTATION AND BYTE VALUES
Bit designations are labeled between brackets (i.e., “bit <0 >”). Binary values are shown with the
most significant bit (MSb) on the far left, least significant bit (LSb) at the far right. Byte values in
hexadecimal are also shown with the MSB on the left, LSB on the right.
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