Compaq EN Series - Manual

Compaq EN Series

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Table of Contents:

  • Page 2 – TRG
  • Page 3 – Reader Feedback
  • Page 4 – NOTICE
  • Page 5 – Technical Reference Guide; ii
  • Page 6 – iii; TABLE OF CONTENTS
  • Page 7 – iv
  • Page 10 – vii
  • Page 11 – LIST OF FIGURES
  • Page 13 – LIST OF TABLES; DMA C
  • Page 14 – xi
  • Page 16 – Chapter 1 INTRODUCTION; Hardcopy documentation sources:
  • Page 17 – Chapter 1 Introduction
  • Page 18 – COMMON ACRONYMS AND ABBREVIATIONS; Table 1-1 lists the acronyms and abbreviations used in this guide.; Table 1–1. Acronyms and Abbreviations; Acronyms and Abbreviations; Continued
  • Page 22 – Chapter 2 SYSTEM OVERVIEW; This chapter includes the following topics:
  • Page 23 – Chapter 2 System Overview; FEATURES AND OPTIONS
  • Page 24 – OPTIONS; Removeable media drives: 1.44 MB diskette drive
  • Page 25 – MECHANICAL DESIGN; Figure 2–2. Cabinet Layouts, Front View; Desktop
  • Page 26 – Minitower
  • Page 27 – CHASSIS LAYOUTS; Figure 2–4. Desktop Chassis Layout, Top View; Front
  • Page 28 – Figure 2–5. Minitower Chassis Layout, Left Side View
  • Page 29 – BOARD LAYOUTS; Figure 2–6. System Board Connector and Switch Locations
  • Page 30 – Figure 2–7. Backplane Board Connector, Header, and Switch Locations; Desktop Backplane Board
  • Page 31 – SYSTEM ARCHITECTURE; Table 2-1 lists differences between system models:; Table 2–1. Model Differences; Model Differences
  • Page 32 – Figure 2–8. Compaq Deskpro EN System Architecture, Block diagram
  • Page 33 – PROCESSOR; Figure 2–9. Processor Assembly Comparison; Pentium II Processor
  • Page 34 – SYSTEM MEMORY; Table 2–2. Support Chipsets; Support Chipsets; MASS STORAGE
  • Page 35 – SERIAL AND PARALLEL INTERFACES; Table 2–3. Graphics Subsystem Comparison; Graphics Subsystem Comparison; AUDIO SUBSYSTEM
  • Page 36 – SPECIFICATIONS; Table 2–4. Environmental Specifications; Environmental Specifications; Table 2–5. Electrical Specifications; Electrical Specifications; Table 2–6. Physical Specifications; Physical Specifications
  • Page 37 – Table 2–7. Diskette Drive Specifications; Table 2–8. 24x CD-ROM Drive Specifications; 2x CD-ROM Drive Specifications
  • Page 38 – Table 2–9. Hard Drive Specifications; Hard Drive Specifications
  • Page 39 – This page is intentionally blank.
  • Page 40 – Chapter 3 PROCESSOR/MEMORY SUBSYSTEM
  • Page 41 – PROCESSOR/MEMORY SUBSYSTEM; Figure 3–1. Processor/Memory Subsystem Architecture
  • Page 42 – Table 3–1. Processor Comparison; Processor Comparsion; Figure 3–2. Pentium II Processor Internal Architecture
  • Page 43 – Celeron Processor; Figure 3–3. Celeron Processor Internal Architecture
  • Page 44 – PROCESSOR CHANGING/UPGRADING; Table 3–2. Bus/Core Speed Switch Settings; Bus/Core Speed Switch Settings
  • Page 47 – Figure 3-3 shows the system memory map for the system.; Figure 3–4. System Memory Map
  • Page 48 – SUBSYSTEM CONFIGURATION
  • Page 50 – Chapter 4 SYSTEM SUPPORT
  • Page 51 – PCI BUS OVERVIEW; Figure 4–1. PCI Bus Devices and Functions
  • Page 52 – PCI CONNECTOR; Table 4–1. PCI Bus Connector Pinout; PCI Bus Connector Pinout
  • Page 53 – PCI BUS MASTER ARBITRATION; Table 4–2. PCI Bus Mastering Devices; PCI Bus Mastering Devices
  • Page 54 – PCI BUS TRANSACTIONS
  • Page 55 – Figure 4–3. Type 0 Configuration Cycle; PCI Component Configuration Access
  • Page 56 – Table 4–4. PCI Function Configuration Acces; PCI Function Configuration Access; Figure 4–4. PCI Configuration Space Map
  • Page 57 – Table 4–5. System Board PCI Device Identification; Special Cycles
  • Page 58 – PCI INTERRUPT MAPPING
  • Page 59 – PCI CONFIGURATION; PCI/ISA Bridge Configuration Registers
  • Page 60 – AGP BUS OVERVIEW
  • Page 61 – Data Request; AGP 1X Transfers
  • Page 62 – AGP 2X Transfers
  • Page 63 – AGP CONFIGURATION; PCI/AGP Bridge Function Configuration Registers
  • Page 64 – AGP CONNECTOR; Figure 4–7. AGP Bus Connector; AGP Bus Connector Pinout
  • Page 65 – ISA BUS OVERVIEW; Figure 4–8. ISA Bus Block Diagram
  • Page 66 – ISA CONNECTOR; Figure 4–9. ISA Expansion Connector; ISA Expansion Connector Pinout
  • Page 67 – ISA BUS TRANSACTIONS; The key control signals are described as follows:
  • Page 69 – DIRECT MEMORY ACCESS; Table 4–10. Default DMA Channel Assignments
  • Page 70 – Page Registers; Table 4–11. DMA Page Register Addresses; The memory address is derived as follows:
  • Page 71 – Table 4–12. DMA Controller Registers; DMA Controller Registers
  • Page 72 – INTERRUPTS; Figure 4–10. Maskable Interrupt Processing, Block Diagram
  • Page 73 – Table 4–13. Maskable Interrupt Priorities and Assignments; Maskable Interrupt Priorities and Assignments; Table 4–14. Maskable Interrupt Control Registers; Maskable Interrupt Control Registers
  • Page 74 – Non-Maskable Interrupts; Microprocessor internal error (activating IERRA or IERRB); NMI Status Register 61h
  • Page 76 – INTERVAL TIMER; Table 4–15. Interval Timer Functions; Interval Timer Functions; Table 4–16. Interval Timer Control Registers; Interval Timer Control Registers; ISA CONFIGURATION
  • Page 77 – SYSTEM CLOCK DISTRIBUTION; Table 4–17. Clock Generation and Distribution; Clock Generation and Distribution
  • Page 78 – REAL-TIME CLOCK AND CONFIGURATION MEMORY; Figure 4–11. Configuration Memory Map; CMOS
  • Page 79 – Re-connect AC power cord to the chassis and turn unit on.
  • Page 80 – RTC Control Register A, Byte 0Ah; RTC Status Register C, Byte 0Ch; RTC Status Register D, Byte 0Dh
  • Page 81 – Configuration Byte 0Eh, Diagnostic Status; This byte contains diagnostic status data.; Configuration Byte 0Fh, System Reset Code; This byte contains the system reset code.; Configuration Byte 10h, Diskette Drive Type; Configuration Byte 12h, Hard Drive Type
  • Page 82 – Configuration Byte 13h, Security Functions; Configuration Byte 14h, Equipment Installed; Configuration Bytes 15h and 16h, Base Memory Size
  • Page 83 – Configuration Bytes 19h-1Ch, Hard Drive Types; Configuration Byte 1Fh, Power Management Functions; Configuration Byte 24h, System Board Identification; Configuration memory location 24h holds the system board ID.; Configuration Byte 25h, System Architecture Data
  • Page 84 – Configuration Byte 26h, Auxiliary Peripheral Configuration; Configuration Byte 28h, Expanded and Base Memory, IRQ12 Select
  • Page 85 – Configuration Byte 29h, Miscellaneous Configuration Data; Configuration Byte 2Ah, Hard Drive Timeout; Configuration Byte 2Bh, System Inactivity Timeout; Configuration Byte 2Ch, ScreenSave and NUMLOCK Control
  • Page 86 – Configuration Byte 2Dh, Additional Flags; These bytes hold the checksum of bytes 10h to 2Dh.; Configuration Byte 30h, 31h, Total Extended Memory Tested; Configuration Byte 34h, International Language Support
  • Page 87 – Configuration Byte 35h, APM Status Flags; Configuration Byte 36h, ECC POST Test Single Bit Errors; These eight locations hold the power-on password.; Configuration Byte 40h, Miscellaneous Disk Data
  • Page 88 – Configuration Byte 45h, Keyboard Snoop Data
  • Page 91 – Configuration Byte 92h, Miscellaneous Configuration Byte; Configuration Byte 93h, PCI Configuration Byte; The ISA card is connected to a color monitor.
  • Page 92 – Configuration Byte 94h, ROM Flash/Power Button Status
  • Page 93 – Configuration Byte 9Dh, ESS Audio Configuration Byte; Configuration Byte 9Eh, ECP DMA Configuration Byte; Configuration Byte 9Fh-AFh, Asset Tag Serial Number
  • Page 94 – Configuration Bytes CAh, DBh Chassis Serial Number
  • Page 95 – I/O MAP AND REGISTER ACCESSING; System I/O Map
  • Page 96 – GPIO UTILIZATION; 2371 South Bridge General Purpose Input Port Utilization
  • Page 97 – 2371 South Bridge General Purpose Output Port Utilization
  • Page 98 – Table 4-22 lists the PnP standard control registers for the 87307.; Table 4–22. 87307 I/O Controller PnP Standard Control Registers; 7307 I/O Controller PnP Standard Control Registers
  • Page 100 – SYSTEM MANAGEMENT SUPPORT; Table 4–23. System Management Control Registers; System Management Control Registers
  • Page 101 – FLASH ROM WRITE PROTECT
  • Page 102 – Diskette drive; USER SECURITY; keystrokes. This initiates an SMI and the
  • Page 103 – TEMPERATURE SENSING; F the THERMTRIP- signal is asserted and recorded in a
  • Page 104 – SMART COVER LOCK
  • Page 105 – POWER MANAGEMENT
  • Page 106 – Hard Drive Spindown Control
  • Page 108 – Chapter 5 INPUT/OUTPUT INTERFACES
  • Page 109 – Chapter 5 Input/Output Interfaces; IDE Configuration Registers; Table 5–1. IDE PCI Configuration Registers; EIDE PCI Configuration Registers (82371 Function 1); IDE Bus Master Control Registers
  • Page 110 – Table 5–3. IDE ATA Control Registers; IDE ATA Control Registers; The following paragraphs describe the IDE ATA control registers.
  • Page 111 – This register defines either:
  • Page 113 – Table 5–4. IDE Controller Commands; IDE Controller Commands
  • Page 115 – IDE CONNECTOR; 0-Pin IDE Connector Pinout
  • Page 116 – DISKETTE DRIVE INTERFACE; Execution phase - The controller carries out the command.
  • Page 117 – DISKETTE DRIVE PROGRAMMING; Table 5–6. Diskette Drive Controller Configuration Registers; Diskette Drive Interface Configuration Registers
  • Page 118 – Diskette Drive Interface Control; Diskette Drive Interface Control Registers
  • Page 120 – DISKETTE DRIVE CONNECTOR; Table 5–8. 34-Pin Diskette Drive Connector Pinout; 4-Pin Diskette Drive Connector Pinout
  • Page 121 – SERIAL INTERFACES; Figure 5–3. Serial Interfaces Block Diagram; DB-9 Serial Connector Pinout
  • Page 122 – SERIAL INTERFACE PROGRAMMING; Table 5–10. Serial Interface Configuration Registers; Serial Interface Configuration Registers
  • Page 123 – Serial Interface Control; Table 5–11. Serial Interface Control Registers; Serial Interface Control Registers
  • Page 125 – This register specifies the data transmission format.; This register controls the modem signal lines
  • Page 126 – This register is not used in this system.
  • Page 127 – PARALLEL INTERFACE
  • Page 128 – ENHANCED PARALLEL PORT MODE; NOTE: The 87307 does not support ECP v1.7 submode of ECP mode 4.
  • Page 129 – PARALLEL INTERFACE PROGRAMMING; Table 5–12. Parallel Interface Configuration Registers; Parallel Interface Configuration Registers
  • Page 130 – Parallel Interface Control; Table 5–13. Parallel Interface Control Registers; Parallel Interface Control Registers
  • Page 131 – This register provides the printer control functions.
  • Page 132 – A read of this location yields 10h, while writes have no effect.; This register defines the ECP mode functions.
  • Page 133 – PARALLEL INTERFACE CONNECTOR; Table 5–14. DB-25 Parallel Connector Pinout
  • Page 134 – KEYBOARD/POINTING DEVICE INTERFACE
  • Page 136 – POINTING DEVICE INTERFACE OPERATION; Table 5–16. Keyboard/Mouse Interface Configuration Registers; Keyboard/Mouse Interface Configuration Registers
  • Page 137 – Output buffer reads
  • Page 138 – CPU Commands To The 8042
  • Page 140 – KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR; Figure 5–7. Keyboard or Pointing Device Interface Connector; Table 5–18. Keyboard/Pointing Device Connector Pinout
  • Page 141 – UNIVERSAL SERIAL BUS INTERFACE; Table 5–19. USB Interface Configuration Registers
  • Page 142 – USB CONTROL; USB Control Registers; USB CONNECTOR; The USB interface provides two identical connectors (ports A and B).
  • Page 144 – Chapter 6 Audio Subsystem; This chapter covers the following subjects:
  • Page 145 – FUNCTIONAL DESCRIPTION
  • Page 146 – Figure 6–1. Audio Subsystem Block Diagram
  • Page 147 – PCM AUDIO PROCESSING; Figure 6–2. Analog Signal Sampling/Quantizing
  • Page 148 – DAC Operation; Figure 6–3. DAC Operation; A. Quantized Value Decoding
  • Page 149 – PCM Configuration Modes; Table 6–1. Audio Mode Differences; Audio Mode Differences; PCM Bus Cycles
  • Page 150 – FM SYNTHESIS AUDIO PROCESSING; Figure 6–5. FM Synthesis Patch
  • Page 151 – PROGRAMMING; Automatic
  • Page 152 – CONTROL; Audio Subsystem I/O Map; PCM Control; Compatibility Mode Audio Mixer Control Register Mapping
  • Page 153 – Table 6–4. Extended Mode Audio Mixer Control Register Mapping; Extended Mode Audio Mixer Control Register Mapping; FM Synthesis Control; Table 6–5. FM Synthesizer Control Register Mapping; FM Synthesizer Control Register Mapping
  • Page 154 – Table 6–6. Audio Subsystem Specifications; Audio Subsystem Specifications
  • Page 156 – Chapter 7 POWER SUPPLY AND DISTRIBUTION; Figure 7–1. Power Distribution and Control, Block Diagram
  • Page 157 – Chapter 7 Power and Signal Distribution; POWER SUPPLY ASSEMBLY; Table 7-1 shows the specifications for the power supply.
  • Page 158 – POWER CONTROL; Power LED Indications; Power LED
  • Page 159 – PS On Control Select
  • Page 160 – POWER DISTRIBUTION; Figure 7–2. Power Cable Diagram
  • Page 161 – LOW VOLTAGE DISTRIBUTION; Figure 7–3. Low Voltage Supply, Block Diagram
  • Page 162 – SIGNAL DISTRIBUTION; Figure 7–4. Signal Distribution Diagram; System
  • Page 163 – Figure 7–5. Backplane Header Pinouts
  • Page 164 – Chapter 8 BIOS ROM; Windows for Workgroups 3.11
  • Page 165 – BOOT BLOCK
  • Page 166 – MEMORY DETECTION AND CONFIGURATION; bus to obtain data on the following DIMM parameters:
  • Page 167 – DESKTOP MANAGEMENT SUPPORT; Desktop Management Functions (INT15)
  • Page 169 – SYSTEM ID
  • Page 176 – EDID RETRIEVE; 720-Intellisafe Hard Drive detects imminent failure
  • Page 177 – SYSTEM MAP RETRIEVAL
  • Page 178 – FLASH ROM FUNCTIONS
  • Page 179 – ACCESSING CMOS
  • Page 181 – SECURITY FUNCTIONS
  • Page 182 – PNP SUPPORT; PnP BIOS Functions
  • Page 183 – SMBIOS
  • Page 184 – POWER MANAGEMENT FUNCTIONS; On – The computer is running normally and is drawing full power.; ACPI SUPPORT
  • Page 185 – APM SUPPORT
  • Page 186 – APM BIOS Functions (INT15)
  • Page 187 – USB LEGACY SUPPORT; End
  • Page 188 – Appendix A ERROR MESSAGES AND CODES; Power-On Messages; BEEP/KEYBOARD LED CODES; Beep/Keyboard LED Codes
  • Page 190 – Table A–4. Processor Error Messages; Processor Error Messages
  • Page 191 – Table A–5. Memory Error Messages; Memory Error Messages; Table A–6. Keyboard Error Messages; Keyboard Error Messages
  • Page 192 – Table A–7. Printer Error Messages; Printer Error Messages
  • Page 193 – Table A–9. Diskette Drive Error Messages; Diskette Drive Error Messages; Table A–10. Serial Interface Error Messages; Serial Interface Error Messages
  • Page 194 – Table A–11. Serial Interface Error Messages
  • Page 195 – Table A–12. Hard Drive Error Messages; Hard Drive Error Messages
  • Page 196 – Table A–13. Hard Drive Error Messages; Table A–14. Hard Drive Messages
  • Page 197 – Table A–15. Audio Error Messages; Audio Error Message; Table A–16. Network Interface Error Messages; Network Interface Error Messages
  • Page 198 – Table A–17. SCSI Interface Error Messages; SCSI Interface Error Messages; Table A–18. Pointing Device Interface Error Messages; Pointing Device Interface Error Messages
  • Page 199 – CEMM PRIVILEDGED OPS ERROR MESSAGES; Table A–19. CEMM Privileged Ops Error Messages; CEMM Privileged Ops Error Messages; CEMM EXCEPTION ERROR MESSAGES; Table A–20. CEMM Exception Error Messages; CEMM Exception Error Messages
  • Page 200 – Appendix B ASCII CHARACTER SET; key and using the Numeric; Alt; ASCII Character Set
  • Page 202 – Appendix C KEYBOARD; This appendix covers the following keyboard types:
  • Page 203 – KEYSTROKE PROCESSING; Figure C–1. Keystroke Processing Elements, Block Diagram
  • Page 204 – TRANSMISSIONS TO THE SYSTEM; The enhanced keyboard has three operating modes:
  • Page 205 – KEYBOARD LAYOUTS
  • Page 206 – Windows Enhanced Keyboards
  • Page 207 – KEYS
  • Page 208 – Multi-Keystroke Functions
  • Page 209 – Windows Keystrokes
  • Page 210 – KEYBOARD COMMANDS; SCAN CODES; Mode 3 generates a different scan code set from Modes 1 and 2. Code
  • Page 211 – Table C–2. Keyboard Scan Codes; Keyboard Scan Codes
  • Page 214 – Appendix D Compaq 10/100 TX PCI Intel WOL UTP Controller Card
  • Page 215 – The LEDs provide the following indications:
  • Page 216 – CARD POWER AND CLOCK; Digitally controlled adaptive equalization of transmission; Figure D–3. 82558 Controller Internal Architecture
  • Page 217 – POWER MANAGEMENT SUPPORT
  • Page 218 – CONFIGURATION/CONTROL; Vender ID; Table D–1. Operating Specifications; Operating Specifications
  • Page 220 – Appendix E Wide Ultra SCSI Host Adapter; This appendix covers the following subjects:; Figure E–1. Wide Ultra SCSI Host Adapter Card Layout
  • Page 221 – Figure E–2. Adaptec AHA-2940U Ultra SCSI Adapter Card Block Diagram
  • Page 222 – SCSI ADAPTER PROGRAMMING; Table E–1. Ultra SCSI Host Adapter Card Control Register Mapping; SPECIFCATIONS; The operating specifications are listed in Table E-2.; Table E–2. Ultra SCSI Host Adapter Card Specifications; Ultra SCSI Host Adapter Card Specifications
  • Page 223 – USER GUIDELINES; Table E–3. Wide Ultra SCSI Adapter Card Typical Configuration; Wide Ultra SCSI Adapter Card
  • Page 224 – SCSI CONNECTORS; Table E–4. SCSI Connector Pinout; SCSI Connector Pinout
  • Page 225 – Table E–5. Wide Ultra SCSI Connector Pinout; Wide-Ultra SCSI Connector Pinout
  • Page 226 – Appendix F ATI RAGE PRO AGP 1X/2X Graphics Cards; Figure F–1. ATI RAGE PRO AGP Graphics Card Layout (NLX version shown)
  • Page 227 – Figure F–2. ATI RAGE PRO AGP Graphics Card Block diagram
  • Page 228 – ATI RAGE PRO TURBO AGP GRAPHICS CONTROLLER
  • Page 229 – DISPLAY MODES; Table F–2. 3D Graphics Display Modes; D Graphics Display Modes
  • Page 230 – Table F–3. ATI RAGE PRO PCI Configuration Space Registers; ATI RAGE PRO PCI Configuration Space Registers; Table F–4. Standard VGA Mode I/O Mapping; Standard VGA Mode I/O Mapping; Extended VGA Modes
  • Page 231 – MONITOR POWER MANAGEMENT CONTROL; Table F–5. Monitor Power Management Conditions; Monitor Power Management Conditions; CONNECTORS
  • Page 232 – MONITOR CONNECTOR; Table F–6. DB-15 Monitor Connector Pinout; DB-15 Monitor Connector Pinout
  • Page 233 – ATI MULTIMEDIA CHANNEL CONNECTOR; Table F–7. Multimedia Interface Connector Pinout; Multimedia Interface Connector Pinout
  • Page 234 – INDEX
  • Page 235 – Specifications
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This hardcopy is designed to be placed into a standard 3-ring binder. Provided below is a title block thatcan be copied and cut out and placed into the slip or taped onto the edge of the binder. Deskpro EN Series of Personal ComputersDesktop and Minitower Form Factors TRG

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Reader Feedback Please feel free to send any questions, suggestions, corrections, or comments regarding thisdocument please to the following email address: [email protected] When responding, please state the title of the referenced document.

Page 4 - NOTICE

Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 i NOTICE The information in this document is subject to change without notice. COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OREDITORIAL ERRORS O...

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