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Technical
Reference
Guide
For the
Compaq Deskpro EN Series of Personal Computers
Desktop and Minitower Form Factors
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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 EN Series of Personal Computers Desktop and Minitower Form Factors TRG
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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.
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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 informa
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Technical Reference Guide ii Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998
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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.........................
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Technical Reference Guide CHAPTER 4 SYSTEM SUPPORT......................................................................................................... 4.1 INTRODUCTION.................................................................................................................. 4-1 4.2 PCI BUS OVERVIEW........................................................................................................... 4-2 4.2.1 PCI CONNECTOR........................................................
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Technical Reference Guide 5.5 PARALLEL INTERFACE ................................................................................................... 5-20 5.5.1 STANDARD PARALLEL PORT MODE ..................................................................... 5-20 5.5.2 ENHANCED PARALLEL PORT MODE..................................................................... 5-21 5.5.3 EXTENDED CAPABILITIES PORT MODE ............................................................... 5-21 5.5.4 PARALLEL INTERFA
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Technical Reference Guide 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
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Technical Reference Guide APPENDIX C KEYBOARD................................................................................................................... C.1 INTRODUCTION..................................................................................................................C-1 C.2 KEYSTROKE PROCESSING................................................................................................C-2 C.2.1 TRANSMISSIONS TO THE SYSTEM ..............................................
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Technical Reference Guide LIST OF FIGURES FIGURE 2–1. COMPAQ DESKPRO EN PERSONAL COMPUTER WITH MONITOR ........................................... 2-1 FIGURE 2–2. CABINET LAYOUTS, FRONT VIEW...................................................................................... 2-4 FIGURE 2–3. CABINET LAYOUTS, REAR VIEW........................................................................................ 2-5 FIGURE 2–4. DESKTOP CHASSIS LAYOUT, TOP VIEW...................................
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Technical Reference Guide FIGURE C–1. KEYSTROKE PROCESSING ELEMENTS, BLOCK DIAGRAM ....................................................C-2 FIGURE C–2. KEYBOARD-TO-SYSTEM TRANSMISSION OF CODE 58H, TIMING DIAGRAM..........................C-3 FIGURE C–3. U.S. ENGLISH (101-KEY) KEYBOARD KEY POSITIONS.......................................................C-4 FIGURE C–4. NATIONAL (102-KEY) KEYBOARD KEY POSITIONS............................................................C-4 FIGURE C–5. U.S.
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Technical Reference Guide LIST OF TABLES TABLE 1–1. ACRONYMS AND ABBREVIATIONS....................................................................................... 1-3 TABLE 2–1. MODEL DIFFERENCES....................................................................................................... 2-10 TABLE 2–2. SUPPORT CHIPSETS .......................................................................................................... 2-13 TABLE 2–3. GRAPHICS SUBSYSTEM COMPARISON ...
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Technical Reference Guide TABLE 5–9. DB-9 SERIAL CONNECTOR PINOUT.................................................................................. 5-14 TABLE 5–10. SERIAL INTERFACE CONFIGURATION REGISTERS.............................................................. 5-15 TABLE 5–11. SERIAL INTERFACE CONTROL REGISTERS........................................................................ 5-16 TABLE 5–12. PARALLEL INTERFACE CONFIGURATION REGISTERS........................................
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Technical Reference Guide TABLE D–1. OPERATING SPECIFICATIONS............................................................................................. D-5 TABLE E–1. ULTRA SCSI HOST ADAPTER CARD CONTROL REGISTER MAPPING ......................................E-3 TABLE E–2. ULTRA SCSI HOST ADAPTER CARD SPECIFICATIONS...........................................................E-3 TABLE E–3. WIDE ULTRA SCSI ADAPTER CARD TYPICAL CONFIGURATION ............................................E-4
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Technical Reference Guide Chapter 1 INTRODUCTION 1. Chapter 1 INTRODUCTION 1.1 ABOUT THIS GUIDE This guide provides technical information about the Compaq Deskpro EN Series of Personal Computers in desktop and minitower form factors. This document includes information regarding system design, function, and features that can be used by programmers, engineers, technicians, and system administrators. This and other support documentation is available online and can be downloaded in .PDF format from
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Chapter 1 Introduction 1.2 NOTATIONAL CONVENTIONS 1.2.1 VALUES Hexadecimal values are indicated by the letter “h” following an alpha-numerical value. Binary values are indicated by the letter “b” following a value of ones and zeros. Memory addresses expressed as “SSSS:OOOO” (SSSS = 16-bit segment, OOOO = 16-bit offset) can be assumed as a hexadecimal value. Values that have no succeeding letter can be assumed to be decimal. 1.2.2 RANGES Ranges or limits for a parameter are shown as a pair of val
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Technical Reference Guide 1.3 COMMON ACRONYMS AND ABBREVIATIONS Table 1-1 lists the acronyms and abbreviations used in this guide. Table 1–1. Acronyms and Abbreviations Table 1-1. Acronyms and Abbreviations Acronym/Abbreviation Description A ampere AC alternating current ACPI Advanced Configuration and Power Interface A/D analog-to-digital AGP Accelerated graphics port API application programming interface APM advanced power management ASIC application-specific integrated circuit AT 1. attenti
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Chapter 1 Introduction Table 1-1. Acronyms and Abbreviations Continued Acronym/Abbreviation Description DIMM dual inline memory module DIN Deutche IndustriNorm (connector standard) DIP dual inline package DMA direct memory access DMI Desktop management interface dpi dots per inch DRAM dynamic random access memory DRQ data request EDID extended display identification data EDO extended data out (RAM type) EEPROM electrically eraseable PROM EGA enhanced graphics adapter EIA Electronic Industry A
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Technical Reference Guide Table 1-1. Acronyms and Abbreviations Continued Acronym/Abbreviation Description lb pound LAN local area network LCD liquid crystal display LED light-emitting diode LIF low insertion force (socket) LSI large scale integration LSb / LSB least significant bit / least significant byte LUN logical unit (SCSI) MMX multimedia extensions MPEG Motion Picture Experts Group ms millisecond MSb / MSB most significant bit / most significant byte mux multiplex MVA motion video acce
