Intel Pentium 4 Processor and the 845 Chipset
Technical Reference Guide
Page
 TRG
Page
 Featuring the Intel Pentium 4 Processor
 Second Edition -- January
 Table of Contents
 System Support
 Power Supply and Distribution
 Appendix B Ascii Character SET
 Appendix D COMPAQ/NVIDIA Vanta LT AGP Graphics Card
 Technical Reference Guide
 List of Figures
 Power Distribution and CONTROL, Block Diagram
 List of Tables
 Technical Reference Guide
 Table H-2
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 Hardcopy
About this Guide
Online Viewing
 Model Numbering Convention
Additional Information Sources
Serial Number
XXX/XNN/NN/N/NNNx
 Values
Notational Conventions
Ranges
Register Notation and Usage
 Acronym/Abbreviation Description
Common Acronyms and Abbreviations
Acronyms and Abbreviations
 DCH
DAC
DDC
DDR
 IPL
INT
IRQ
ISA
 PIN
PFC
PIO
Post
 Tafi
TAD
TCP
TFT
 Introduction
System Overview
 Standard Features
Features and Options
Feature Difference Matrix by Form Factor
Configurable
 Options
 Mechanical Design
 Evo or Workstation Small Form Factor
Cabinet Layouts
Front Views
 Compaq Evos and Workstation, Rear Views
Rear Views
 Front
Chassis Layouts
Back
 Desktop Chassis Layout, Top View
 AGP Slot PCI Slot Drive Lock
 Small Form Factor Board Layouts
Board Layouts
 Desktop or Configurable Minitower Main Board Layouts
 SDR SDR/DDR
Desktop Configurable Minitower
System Architecture
 AGP Sdram
RGB AGP
ICH2 USB LPC
FWH
 Intel Pentium 4 Processor
10.Processor Assembly And Mounting
 Support Components
Chipset
Chipset Functions
Support Component Functions
 Mass Storage
System Memory
Serial and Parallel Interfaces
Universal Serial BUS Interface
 NVIDIA Matrox
Graphics Subsystem
Standard AGP Graphics Comparison
 Environmental Specifications Factory Configuration
Specifications
Electrical Specifications
Audio Subsystem
 Diskette Drive Specifications
Physical Specifications
Small Configurable Parameter
Compaq SP#
 Hard Drive Specifications
Optical Drive Specifications
Parameter 48x CD-ROM 16/10/40x CD-RW Drive
CD-R, CD-RW
 XMM1 XMM2 XMM3 Dimm
FSB I/F
AGP MCH
 Processor Overview
Pentium 4 Processor
 FSB
CPU FPU
 Processor Upgrading
 Memory Subsystem
 Dimm ID
SPD Address Map Sdram Dimm
Byte Description
 Shows the system memory map
 PCI Config Reset Addr Register Value
Subsystem Configuration
Host/PCI Bridge Configuration Registers GMCH, Device
 System Support
 Eide USB
PCI BUS Overview
 PCI Bus Devices and Functions
 1.1 I/O and Memory Cycles
Configuration Cycles
PCI BUS Transactions
 Idsel
PCI Component Configuration Access
PCI Component
Device #
 System Board PCI Device Identification
PCI Configuration Space Type
Bist
PCI Device Vendor ID Device ID
 REQ/GNT Line Device
PCI BUS Master Arbitration
PCI Bus Mastering Devices
 Option ROM Mapping
PCI Power Management Support
PCI Interrupts
PCI SUB-BUSSES
 LPC Bridge Configuration Registers ICH2, Function 0, Device
PCI Configuration
Config Register Reset
Addr Value Register
 Pin Signal
PCI Connector
PCI Bus Connector Pinout
 BUS Transactions
AGP BUS Overview
 CLK D1A D1B D2A D2B GNT Trdy
Data Request
Data Transfers
 GNT Trdy
CLK D1A D1B D2A D2B D3A D3B D4A D4B
 Config Reset Addr Register Value
AGP Configuration
 AGP Bus Connector Pinout
AGP Connector
Ovrcnt GND VDD3
VDD
 Maskable Interrupts
System Resources
Interrupts
 Priority Signal Label Source Typical
Apic Mode
Mode
Maskable Interrupt Priorities and Assignments
 NMI- Generation
Non-Maskable Interrupts
Maskable Interrupt Control Registers
Port Register
 IOCHK- NMI
SMI- Generation
 DMA Channel Device ID
Direct Memory Access
Default DMA Channel Assignments
 DMA Channel Register I/O Port
DMA Page Registers
DMA Page Register Addresses
 Register Controller
DMA Controller Registers
DMA Controller Registers
 Frequncy Source Destination
System Clock Distribution
Clock Generation and Distribution
 Clearing Cmos
REAL-TIME Clock and Configuration Memory
 Configuration Memory Cmos Map
Cmos Archive and Restore
Standard Cmos Locations
Location Function
 Setup Password
Power-On Password
System Management
Security Functions
 Chassis Security
Cable Lock Provision
1.4 I/O Interface Security
 System Boot/ROM Flash Status LED Indications
Power Management
System Status
Acpi Wake-Up Event System Wakes From
 System Operational Status LED Indications
Power Hard Drive System Status
Thermal Sensing and Cooling
 11.Small Form Factor Fan Control Block Diagram
 System I/O MAP
Register MAP and Miscellaneous Functions
System I/O Map
Port Function
 LPC47B367 I/O Controller Control Registers
Index Function Reset Value
2 LPC47B367 I/O Controller Functions
 HD LED
System Status Power LED
 IDE Programming
Enhanced IDE Interface
 Eide PCI Configuration Registers 82801, Device 31/Function
IDE Configuration Registers
IDE Bus Master Control Registers
IDE Bus Master Control Registers
 Pin Signal Description
IDE Connector
Pin Primary IDE Connector Pinout
 Diskette Drive Interface
 Diskette Drive Interface Configuration Registers
Diskette Drive Interface Configuration
Index Reset
Diskette Drive Programming
 Pri
Diskette Drive Interface Control Registers
 Pin Diskette Drive Connector Pinout
Diskette Drive Connector
 Serial Interface
Serial Connector
DB-9 Serial Connector Pinout
 Serial Interface Configuration Registers
Serial Interface Configuration
Serial Interface Programming
Function
 Addr Register
Serial Interface Control
Serial Interface Control Registers
 Parallel Interface
Standard Parallel Port Mode
 Extended Capabilities Port Mode
Enhanced Parallel Port Mode
 Parallel Interface Programming
Parallel Interface Configuration
Parallel Interface Configuration Registers
 Address Register
Parallel Interface Control
Parallel Interface Control Registers
 Pin Signal Function
Parallel Interface Connector
DB-25 Parallel Connector Pinout
 Keyboard Interface Operation
KEYBOARD/POINTING Device Interface
 Command
To-Keyboard Commands
 Keyboard Interface Configuration Registers
3.1 8042 Configuration
Pointing Device Interface Operation
KEYBOARD/POINTING Device Interface Programming
 Port 60h
3.2 8042 Control
 Value Command Description
CPU Commands To
 Data
KEYBOARD/POINTING Device Interface Connector
Keyboard/Pointing Device Connector Pinout
 USB Data Formats
USB I/F, Block Diagram
 CRC
 USB Interface Configuration Registers
USB Configuration
USB Programming
USB Control
 USB Connector Pinout
USB Connector
USB Cable Data
USB Cable Length Data
 Functional Analysis
 CD ROM
Front Panel Assembly
TDA
 3 AC97 Link BUS
2 AC97 Audio Controller
Sync
SD OUT
 PB Data R
Audio Codec
 Audio Programming
Audio Configuration
Audio Control
AC’97 Audio Codec Control Registers
 Paramemter
Audio Specifications
AC97 Audio Subsystem Specifications
 TX/RX
TX/RX LAN PHY I/F
 Alert on LAN Support
Wake on LAN Support
AOL Events
Event Description
 Acpi Environment
Power Management Support
APM Environment
 NIC Programming
Configuration
Control
NIC Control Registers
 NIC Specifications
NIC Connector
NIC Specifications
MS-DOS
 AOL/SOS
NIC UPGRADING/CHANGING
Asic PCI
SOS PCI
 Remote System Alert Events
 AUX
Power Supply ASSEMBLY/CONTROL
 Range Min. Current Max Surge
Power Supply Assembly
Watt Power Supply Assembly Specifications PN
 System State Pressed Power Button Results
Power Control
Power Button
 Wake Up Events
Power LED Indications
Power LED Condition
 Power Transition OS Restart State System Condition
System Power States
 1 3.3/5/12 VDC Distribution
Power Distribution
Conn Pin
RTN
 Desktop and Configurable Minitower Power Cable Diagram
 VID0 VID1 VID2
LOW Voltage PRODUCTION/DISTRIBUTION
VID4
AGP PWR DDR
 IDE I/F CD-ROM
Signal Distribution
System Board
 System
Desktop/Minitower Signal Distribution Diagram
 AOL/SOS Header P12
Power Button/LED Header P5
CD ROM Audio Header P7
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 Bios ROM
 ROM Flashing
Boot Block Codes
Upgrading
Num Lock Cap Lock Scroll Lock
 \Flashi.exe ImageFilename BackgroundColor ForegroundColor
Changeable Splash Screen
 Network Boot F12 Support
Boot Functions
Boot Device Order
 Boot Error Codes
Memory Detection and Configuration
Boot Error Codes
Visual Audible Meaning
 Heading Option Description
Setup Utility
Setup Utility Functions
 Removable Media Boot
Translation Mode IDE disks only
Translation Parameters IDE Disks only
Multisector Transfers IDE ATA devices only
 CTRL+ALT+DEL
Heading Option Description
 Setup Utility Functions
 Setup Utility Functions
 Setup Utility Functions
 Client Management Functions INT15
Function Mode
Client Management Functions
 Output
Input EAX
EBX
ECX
 System System ID ROM Family PnP ID
System ID and ROM Type
Edid Retrieve
 Drive Fault Prediction
Temperature Status
PnP Bios Functions
PNP Support
 Smbios
 System Timer
Power Management Functions
IDE Hard Drive Timer
Independent PM Support
 System Standby
Going to Sleep in Independent PM
IDE Hard Drive Standby
Suspend
 APM 1.2 Support
Acpi Support
 APM Bios Function Description
APM Bios Functions
 Staying Awake in APM
 System Suspend
Going to Sleep in APM
System/Hard Drive Standby
 USB Legacy Support
Waking Up in APM
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 Table A-1
BEEP/KEYBOARD LED Codes
Beep/Keyboard LED Codes
Beeps LED Probable Cause
 Power-On Self Test Post Messages
POWER-ON Self Test Post Messages
Error Message Probable Cause
Table A-2
 System Error Messages
System Error Messages
Table A-3
Message Probable Cause
 Keyboard Error Messages
Memory Error Messages
Table A-4
Table A-5
 Video Graphics Error Messages
Printer Error Messages
Table A-6
Table A-7
 Serial Interface Error Messages
Diskette Drive Error Messages
Table A-8
Table A-9
 Table A-10
Modem Communications Error Messages
 Hard Drive Error Messages
System Status Error Messages
Table A-11
Table A-12
 Table A-14
Table A-13
 Network Interface Error Messages
Audio Error Messages
17 DVD/CD-ROM Error Messages
 Pointing Device Interface Error Messages
Scsi Interface Error Messages 65xx-xx, 66xx-xx
Table A-18
Table A-19
 12Compaq Personal Computers
 Table B-1
Symbol Dec Hex
Ascii Character Set
Dec Hex
 Table B-1.ASCII Code Set
Dec Hex Symbol
 Keyboard
 Keystroke Processing
 Parameter Minimum Nominal Maximum
1 PS/2-TYPE Keyboard Transmissions
 USB-TYPE Keyboard Transmissions
 Standard Enhanced Keyboards
Keyboard Layouts
 Figure C-6.National Windows 102W-Key Keyboard Key Positions
Windows Enhanced Keyboards
 Figure C-8.8-Button Easy Access Keyboard Layout
Easy Access Keyboards
 Special Single-Keystroke Functions
Keys
 Windows Keystrokes
Multi-Keystroke Functions
 Button # Description Default Function
Easy Access Keystrokes
 Keyboard-to-System Commands
Keyboard Commands
Command
Scan Codes
 Keyboard Scan Codes
Table C-2
Key Make / Break Codes Hex Pos
Mode
 Table C-2. Keyboard Scan Codes
 7E/FE
Key
 Table C-2. Keyboard Scan Codes
 Pin
Connectors
 Sdram Nvidia
COMPAQ/NVIDIA Vanta LT AGP Graphics Card
 Functional Description
 Nvidia Vanta LT Display Modes
Resolution Bits per pixel Color Depth
Display Modes
 Software Support Information
Power Management and Consumption
Monitor Power Management Conditions
 DB-15 Monitor Connector Pinout
Monitor Connector
SDA
SCL
 6Compaq Personal Computers
 COMPAQ/NVIDIA QUADRO2 EX/MXR AGP Graphics Cards
 Appendix E Compaq/NVIDIA Quadro2 EX/MXR AGP Graphics Cards
 Nvidia Quadro2 EX/MXR Graphics Display Modes
Resolution Bits per pixel Color Depth
Table E-1
 Table E-2
Monitor Power Management Conditions
 Table E-3
DB-15 Monitor Connector Pinout
Pin Signal Description
 6Compaq Personal Computers
 Appendix F COMPAQ/Matrox Millennium G450
 Appendix H Compaq/Matrox Millennium G450 AGP Graphics Card
 Matrox Millennium G450 Graphics Display Modes
Table F-1
 Table F-2
 Table F-3
 Table F-4
Video Feature Connector
Video In Connector Pinout
 COMPAQ/ADAPTEC 29160N Scsi Host Adapter
 Appendix G Compaq/Adaptec 29160N Scsi Host Adapter
 Scsi Adapter Control
Scsi Adapter Programming Scsi Adapter Configuration
Table G-1
Table G-2
 External 50-PIN Ultra Scsi Connector
Scsi Connectors
External Ultra Scsi Connector Pinout
Pin Signal Function
 Table G-4
Internal 50-PIN Ultra Scsi Connector
Internal 50-Pin Ultra Scsi Connector Pinout
 Table G-5
Internal 68-PIN ULTRA160 Scsi Connector
Ultra160 Scsi Connector Pinout
 PCI Graphics Card
 DVI RGB
 Card Edge Connector
 Matrox G200 MMS Graphics Controller Display Modes
Table H-1
 MULTI-CARD Configuration with Windows NT
Display Configuration SINGLE-CARD Configuration
 Table H-2
 Adapter Cable Connector Pinout
Adapter Cable Connector
Table H-3
Pin Description
 Table H-4
Analog Monitor Connector
 DVI-D Connector Pinout
Digital Monitor Connector
 10Compaq Personal Computers
 Dimm support
Index
 ROM Bios
 Electrical
Specifications
Environmental
Physical
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