Page 2 - TRG
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
Page 3 - Reader Feedback
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...
Page 5 - Technical Reference Guide; ii
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 ii
Page 6 - iii; TABLE OF CONTENTS
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 iii TABLE OF CONTENTS CHAPTER 1 INTRODUCTION............................................................................................................. 1.1 ABO...
Page 7 - iv
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 iv CHAPTER 4 SYSTEM SUPPORT......................................................................................................... 4.1 INTRODUCTION................
Page 10 - vii
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 vii APPENDIX C KEYBOARD ................................................................................................................... C.1 INTRODUCTION........
Page 11 - LIST OF FIGURES
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 viii LIST OF FIGURES F IGURE 2–1. C OMPAQ D ESKPRO EN P ERSONAL C OMPUTER WITH M ONITOR ........................................... 2-1 F IGURE 2–2. C ABINET L AY...
Page 13 - LIST OF TABLES; DMA C
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 x LIST OF TABLES T ABLE 1–1. A CRONYMS AND A BBREVIATIONS ....................................................................................... 1-3 T ABLE 2–1. ...
Page 14 - xi
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 xi T ABLE 5–9. DB-9 S ERIAL C ONNECTOR P INOUT .................................................................................. 5-14 T ABLE 5–10. S ERIAL I NTE...
Page 16 - Chapter 1 INTRODUCTION; Hardcopy documentation sources:
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 1-1 Chapter 1INTRODUCTION 1. Chapter 1 INTRODUCTION 1.1 ABOUT THIS GUIDE This guide provides technical information about the Compaq Deskpro EN Series of Personal...
Page 17 - Chapter 1 Introduction
Chapter 1 Introduction Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 1-2 1.2 NOTATIONAL CONVENTIONS 1.2.1 VALUES Hexadecimal values are indicated by the letter “h” following an alpha-numerical value. Binaryvalues are indicated by the...
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
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 1-3 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. Acr...
Page 22 - Chapter 2 SYSTEM OVERVIEW; This chapter includes the following topics:
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-1 Chapter 2SYSTEM OVERVIEW 2. Chapter 2 SYSTEM OVERVIEW 2.1 INTRODUCTION The Compaq Deskpro EN Series of desktop and minitower Personal Computers (Figure 2-1)d...
Page 23 - Chapter 2 System Overview; FEATURES AND OPTIONS
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-2 2.2 FEATURES AND OPTIONS This section describes the standard features and available options. 2.2.1 STANDARD FEATURES The following standard features are incl...
Page 24 - OPTIONS; Removeable media drives: 1.44 MB diskette drive
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-3 2.2.2 OPTIONS The following items are available as options for all models and may be included in the standardconfiguration of some models: ♦ System Memory: 1...
Page 25 - MECHANICAL DESIGN; Figure 2–2. Cabinet Layouts, Front View; Desktop
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-4 2.3 MECHANICAL DESIGN The Compaq Deskpro EN Series uses a desktop form factor. This section illustrates themechanical particulars of the bezel, chassis, and ...
Page 26 - Minitower
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-5 Item Function 1 AC Line In Connector 2 Smart Cover Lock Screws 3 Line Voltage Switch 4 USB Interface Port B 5 USB Interface Port A 6 100TX speed LED 7 Activi...
Page 27 - CHASSIS LAYOUTS; Figure 2–4. Desktop Chassis Layout, Top View; Front
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-6 2.3.2 CHASSIS LAYOUTS Figures 2-4 and 2-5 show the layout of key assemblies within the desktop and minitower chassisrespectively. For serviceability this sys...
Page 28 - Figure 2–5. Minitower Chassis Layout, Left Side View
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-7 Figure 2–5. Minitower Chassis Layout, Left Side View Front Back Power Supply Drive Bays System Board Speaker AGP NLXGraphics Card Processor Wide-Ultra SCSI C...
Page 29 - BOARD LAYOUTS; Figure 2–6. System Board Connector and Switch Locations
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-8 2.3.3 BOARD LAYOUTS Figure 2-6 shows the location of connectors and switches for the system board, which is the samefor all models and both formfactors. Item...
Page 30 - Figure 2–7. Backplane Board Connector, Header, and Switch Locations; Desktop Backplane Board
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-9 Figure 2-7 shows the connector and switch locations for the two types of backplane boards. Item Function Item Function 1 PCI connector J20 (slot 1) 10 CD aud...
Page 31 - SYSTEM ARCHITECTURE; Table 2-1 lists differences between system models:; Table 2–1. Model Differences; Model Differences
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-10 2.4 SYSTEM ARCHITECTURE The Compaq Deskpro EN Series of Personal Computers is based on an Intel Pentium II processormatched with the Intel 440BX AGPset. The...
Page 32 - Figure 2–8. Compaq Deskpro EN System Architecture, Block diagram
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-11 Figure 2–8. Compaq Deskpro EN System Architecture, Block diagram Pentium II or Celeron Processor 82443BX (North Bridge) 82371 (South Bridge) 33-MHz32-BitPCI...
Page 33 - PROCESSOR; Figure 2–9. Processor Assembly Comparison; Pentium II Processor
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-12 2.4.1 PROCESSOR The Deskpro EN Series includes models based on Pentium II and Celeron processors. Theprocessor and heat sink is mounted as an assembly (Figu...
Page 34 - SYSTEM MEMORY; Table 2–2. Support Chipsets; Support Chipsets; MASS STORAGE
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-13 2.4.2 SYSTEM MEMORY This system provides three 168-pin DIMM sockets with 16, 32 or 64 megabytes of RAMinstalled depending on model. System memory can be exp...
Page 35 - SERIAL AND PARALLEL INTERFACES; Table 2–3. Graphics Subsystem Comparison; Graphics Subsystem Comparison; AUDIO SUBSYSTEM
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-14 2.4.5 SERIAL AND PARALLEL INTERFACES All models include two serial ports and a parallel port accessible at the rear of the chassis. Theserial and parallel p...
Page 36 - SPECIFICATIONS; Table 2–4. Environmental Specifications; Environmental Specifications; Table 2–5. Electrical Specifications; Electrical Specifications; Table 2–6. Physical Specifications; Physical Specifications
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-15 2.5 SPECIFICATIONS This section includes the environmental, electrical, and physical specifications for the CompaqDESKPRO EN Series Personal Computers. Tabl...
Page 37 - Table 2–7. Diskette Drive Specifications; Table 2–8. 24x CD-ROM Drive Specifications; 2x CD-ROM Drive Specifications
Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-16 Table 2–7. Diskette Drive Specifications Table 2-7. Diskette Drive Specifications (Compaq SP# 179161-001) Parameter Measurement Media Type 3.5 in 1.44 MB/72...
Page 38 - Table 2–9. Hard Drive Specifications; Hard Drive Specifications
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 2-17 Table 2–9. Hard Drive Specifications Table 2-9. Hard Drive Specifications Parameter 3.2 GB (# 166873-001) 4.3 GB (# 179287-001) 6.4 GB (# 166973-001) 9.1 GB...
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Chapter 2 System Overview Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 2-18 This page is intentionally blank.
Page 40 - Chapter 3 PROCESSOR/MEMORY SUBSYSTEM
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 3-1 Chapter 3PROCESSOR/MEMORY SUBSYSTEM 3. Chapter 3 PROCESSOR/MEMORY SUBSYSTEM 3.1 INTRODUCTION This chapter describes the processor/cache memory subsystem of t...
Page 41 - PROCESSOR/MEMORY SUBSYSTEM; Figure 3–1. Processor/Memory Subsystem Architecture
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 3-2 66-/100-MHzMem. Data Bus Mem. Addr. Graphics Subsystem 3.2 PROCESSOR/MEMORY SUBSYSTEM The subsystem features an Intel Pentium II or Celeron proces...
Page 42 - Table 3–1. Processor Comparison; Processor Comparsion; Figure 3–2. Pentium II Processor Internal Architecture
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 3-3 3.2.1 PROCESSOR The system board includes a Slot 1-type interface that accommodates a Pentium II or Celeronprocessor. Table 3-1 provides a comparison between...
Page 43 - Celeron Processor; Figure 3–3. Celeron Processor Internal Architecture
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 3-4 3.2.1.2 Celeron Processor Select systems are shipped with the Intel Celeron processor. The Celeron processor (Figure 3-3)uses a CPU/FPU core that ...
Page 44 - PROCESSOR CHANGING/UPGRADING; Table 3–2. Bus/Core Speed Switch Settings; Bus/Core Speed Switch Settings
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 3-5 3.2.2 PROCESSOR CHANGING/UPGRADING The slot 1 design allows for easy changing and/or upgrading of the processor/cache complex.Changing the processor requires...
Page 47 - Figure 3-3 shows the system memory map for the system.; Figure 3–4. System Memory Map
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 3-8 Figure 3-3 shows the system memory map for the system. NOTE: All locations in memory are cacheable. Base memory is always mapped to DRAM. The next...
Page 48 - SUBSYSTEM CONFIGURATION
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 3-9 3.2.4 SUBSYSTEM CONFIGURATION The 443BX north bridge component provides the configuration function for theprocessor/memory subsystem. Table 3-4 lists the con...
Page 50 - Chapter 4 SYSTEM SUPPORT
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-1 Chapter 4SYSTEM SUPPORT 4. Chapter 4 SYSTEM SUPPORT 4.1 INTRODUCTION This chapter covers subjects dealing with basic system architecture and covers the follo...
Page 51 - PCI BUS OVERVIEW; Figure 4–1. PCI Bus Devices and Functions
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-2 4.2 PCI BUS OVERVIEW NOTE: This section describes the PCI bus in general and highlights busimplementation in this particular system. For detailed information ...
Page 52 - PCI CONNECTOR; Table 4–1. PCI Bus Connector Pinout; PCI Bus Connector Pinout
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-3 4.2.1 PCI CONNECTOR Figure 4–2. PCI Bus Connector (32-Bit Type) Table 4–1. PCI Bus Connector Pinout Table 4-1. PCI Bus Connector Pinout Pin B Signal A Signal...
Page 53 - PCI BUS MASTER ARBITRATION; Table 4–2. PCI Bus Mastering Devices; PCI Bus Mastering Devices
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-4 4.2.2 PCI BUS MASTER ARBITRATION The PCI bus supports a bus master/target arbitration scheme. A bus master is a device that hasbeen granted control of the bus...
Page 54 - PCI BUS TRANSACTIONS
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-5 4.2.3 PCI BUS TRANSACTIONS The PCI bus consists of a 32-bit path (AD31-00 lines) that uses a multiplexed scheme forhandling both address and data transfers. ...
Page 55 - Figure 4–3. Type 0 Configuration Cycle; PCI Component Configuration Access
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-6 Figure 4-3 shows how the loading of 0CF8h results in a Type 0 configuration cycle on the PCIbus. The Device Number (bits <15..11> determines which one o...
Page 56 - Table 4–4. PCI Function Configuration Acces; PCI Function Configuration Access; Figure 4–4. PCI Configuration Space Map
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-7 Not required Table 4–4. PCI Function Configuration Acces Table 4-4. PCI Function Configuration Access PCI Function Device No. Function No. Host/PCI Bridge (8...
Page 57 - Table 4–5. System Board PCI Device Identification; Special Cycles
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-8 Table 4–5. System Board PCI Device Identification Table 4-5. System Board PCI Device Identification PCI Device Vender ID Device ID North Bridge (82443 PAC): H...
Page 58 - PCI INTERRUPT MAPPING
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-9 4.2.5 PCI INTERRUPT MAPPING The PCI bus provides for four interrupt signals; INTA-, INTB-, INTC-, and INTD-. Thesesignals may be generated by on-board PCI de...
Page 59 - PCI CONFIGURATION; PCI/ISA Bridge Configuration Registers
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-10 4.2.7 PCI CONFIGURATION PCI bus operations, especially those that involve ISA bus interaction, require the configuration ofcertain parameters such as PCI IRQ...
Page 60 - AGP BUS OVERVIEW
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-11 4.3 AGP BUS OVERVIEW NOTE: This section describes the AGP bus in general. For a detailed description ofAGP bus operations refer to the AGP Interface Specifi...
Page 61 - Data Request; AGP 1X Transfers
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-12 4.3.1.1 Data Request Requesting data is accomplished in one of two ways; either multiplexed addressing (using theAD lines for addressing/data) or demultiplex...
Page 62 - AGP 2X Transfers
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-13 AGP 2X Transfers In AGP 2X transfers, clocking is basically the same as in 1X transfers except that the 66-MHzCLK signal is used to qualify only the control...
Page 63 - AGP CONFIGURATION; PCI/AGP Bridge Function Configuration Registers
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-14 4.3.2 AGP CONFIGURATION AGP bus operations require the configuration of certain parameters involving system memoryaccess by the AGP graphics adapter. The AGP...
Page 64 - AGP CONNECTOR; Figure 4–7. AGP Bus Connector; AGP Bus Connector Pinout
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-15 4.3.3 AGP CONNECTOR Figure 4–7. AGP Bus Connector Table 4–8. AGP Bus Connector Pinout Table 4-8. AGP Bus Connector Pinout Pin A Signal B Signal Pin A Signal...
Page 65 - ISA BUS OVERVIEW; Figure 4–8. ISA Bus Block Diagram
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-16 4.4 ISA BUS OVERVIEW NOTE: This section describes the ISA bus in general and highlights busimplementation in this particular system. For detailed information...
Page 66 - ISA CONNECTOR; Figure 4–9. ISA Expansion Connector; ISA Expansion Connector Pinout
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-17 4.4.1 ISA CONNECTOR Figure 4–9. ISA Expansion Connector Table 4–9. ISA Expansion Connector Pinout Table 4-9. ISA Expansion Connector Pinout Pin Signal Pin S...
Page 67 - ISA BUS TRANSACTIONS; The key control signals are described as follows:
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-18 4.4.2 ISA BUS TRANSACTIONS The ISA bus supports 8- and 16-bit transfers at an 8-MHz rate. Devices limited to 8-bit transfersuse the lower byte portion (data ...
Page 69 - DIRECT MEMORY ACCESS; Table 4–10. Default DMA Channel Assignments
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-20 4.4.3 DIRECT MEMORY ACCESS Direct Memory Access (DMA) is a method by which an ISA device accesses system memorywithout involving the microprocessor. DMA is n...
Page 70 - Page Registers; Table 4–11. DMA Page Register Addresses; The memory address is derived as follows:
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-21 4.4.3.1 Page Registers The DMA page register contains the eight most significant bits of the 24-bit address and worksin conjunction with the DMA controllers...
Page 71 - Table 4–12. DMA Controller Registers; DMA Controller Registers
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-22 The RAM refresh is designed to perform a memory read cycle on each of the 512 row addressesin the DRAM memory space. Refresh operations are used to refresh m...
Page 72 - INTERRUPTS; Figure 4–10. Maskable Interrupt Processing, Block Diagram
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-23 4.4.4 INTERRUPTS The microprocessor uses two types of interrupts; maskable and nonmaskable. A maskableinterrupt can be enabled or disabled within the microp...
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
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-24 Table 4–13. Maskable Interrupt Priorities and Assignments Table 4-13. Maskable Interrupt Priorities and Assignments Priority Signal Label Source (Typical) 1 ...
Page 74 - Non-Maskable Interrupts; Microprocessor internal error (activating IERRA or IERRB); NMI Status Register 61h
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-25 4.4.4.2 Non-Maskable Interrupts Non-maskable interrupts cannot be masked (inhibited) within the microprocessor itself but maybe maskable by software using l...
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
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-27 4.4.5 INTERVAL TIMER The interval timer generates pulses at software (programmable) intervals. A 8254-compatibletimer is integrated into the South Bridge ch...
Page 77 - SYSTEM CLOCK DISTRIBUTION; Table 4–17. Clock Generation and Distribution; Clock Generation and Distribution
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-28 4.5 SYSTEM CLOCK DISTRIBUTION The system uses a Cypress CY2280 or compatible part for generation of most clock signals.Table 4-17 lists the system board cloc...
Page 78 - REAL-TIME CLOCK AND CONFIGURATION MEMORY; Figure 4–11. Configuration Memory Map; CMOS
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-29 4.6 REAL-TIME CLOCK AND CONFIGURATION MEMORY The Real-time clock (RTC) and configuration memory functions are provided by the PC87307I/O controller. The RTC...
Page 79 - Re-connect AC power cord to the chassis and turn unit on.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-30 Table 4-18 lists the mapping of the configuration memory. Locations 00h-3Fh may be accessedusing OUT/IN assembly language instructions or BIOS function INT15...
Page 80 - RTC Control Register A, Byte 0Ah; RTC Status Register C, Byte 0Ch; RTC Status Register D, Byte 0Dh
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-31 RTC Control Register A, Byte 0Ah Bit Function 7 Update in Progress. Read only. 0 = Time update will not occur before 2444 us 1 = Time update will occur with...
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
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-32 6..0 Reserved Configuration Byte 0Eh, Diagnostic Status Default Value = 00h This byte contains diagnostic status data. Configuration Byte 0Fh, System Reset C...
Page 82 - Configuration Byte 13h, Security Functions; Configuration Byte 14h, Equipment Installed; Configuration Bytes 15h and 16h, Base Memory Size
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-33 Configuration Byte 13h, Security Functions Default Value = 00h Bit Function 7 Reserved 6 QuickBlank Enable After Standby: 0 = Disable 1 = Enable 5 Administr...
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
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-34 Configuration Bytes 19h-1Ch, Hard Drive Types Byte 19h contains the hard drive type for drive 1 of the primary controller if byte 12h bits <7..4>hold 1...
Page 84 - Configuration Byte 26h, Auxiliary Peripheral Configuration; Configuration Byte 28h, Expanded and Base Memory, IRQ12 Select
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-35 Configuration Byte 26h, Auxiliary Peripheral Configuration Default Value = 00h Bit Function 7,6 I/O Delay Select 00 = 420 ns (default) 01 = 300 ns 10 = 2600...
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
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-36 Configuration Byte 29h, Miscellaneous Configuration Data Default Value = 00h Bit Function 7..5 Reserved 4 Primary Hard Drive Enable (Non-PCI IDE Controllers)...
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
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-37 Configuration Byte 2Dh, Additional Flags Default Value = 00h Bit Function 7..5 Reserved 4 Memory Test 0 = Test memory on power up only 1 = Test memory on wa...
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
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-38 Configuration Byte 35h, APM Status Flags Default Value = 11h Bit Function 7..6 Power Conservation State: 00 = Ready 01 = Standby 10 = Suspend 11 = Off 5,4 Re...
Page 88 - Configuration Byte 45h, Keyboard Snoop Data
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-39 Configuration Byte 45h, Keyboard Snoop Data Default Value = xxh Bit Function 7 Cntrl/F10 Key Status: 0 = Cntrl & F10 keys not pressed 1 = Cntrl & F1...
Page 91 - Configuration Byte 92h, Miscellaneous Configuration Byte; Configuration Byte 93h, PCI Configuration Byte; The ISA card is connected to a color monitor.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-42 Configuration Byte 90h, 91h, Total Super Extended Memory Configured This byte holds the value of the amount of extended system memory that is configured.The ...
Page 92 - Configuration Byte 94h, ROM Flash/Power Button Status
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-43 Configuration Byte 94h, ROM Flash/Power Button Status Default Value = 00h Bit Function 7..5 Reserved 4 ROM Flash In Progress (if set) 3 Reserved 2 Power But...
Page 93 - Configuration Byte 9Dh, ESS Audio Configuration Byte; Configuration Byte 9Eh, ECP DMA Configuration Byte; Configuration Byte 9Fh-AFh, Asset Tag Serial Number
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-44 Configuration Byte 9Dh, ESS Audio Configuration Byte Default Value = 12h Bit Function 7 Reserved for Game Port Enable 6,5 Audio Address 00 = 22xh 01 = 23xh 1...
Page 94 - Configuration Bytes CAh, DBh Chassis Serial Number
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-45 Configuration Byte C7h, C8h, Serial Ports 1 and 2 (Respectively) Configuration Bytes Default Value = FEh, 7Dh Bit Function 7..2 Base I/O Address (in packed ...
Page 95 - I/O MAP AND REGISTER ACCESSING; System I/O Map
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-46 4.7 I/O MAP AND REGISTER ACCESSING 4.7.1 SYSTEM I/O MAP Table 4–19. System I/O Map Table 4-19. System I/O Map I/O Port Function 0000..000Fh DMA Controller 1 ...
Page 96 - GPIO UTILIZATION; 2371 South Bridge General Purpose Input Port Utilization
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-47 4.7.2 GPIO UTILIZATION This section describes the utilization of general purpose input/output (GPIO) ports provided bythe south bridge (82371) and I/O contr...
Page 97 - 2371 South Bridge General Purpose Output Port Utilization
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-48 Table 4–21. 82371 South Bridge General Purpose Output Port Utilization Table 4-21. 82371 South Bridge General Purpose Output Port Utilization GP Output Port ...
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
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-49 4.7.2.2 87307 I/O Controller Functions The 87307 I/O controller contains various functions such as the keyboard/mouse interfaces,diskette interface, serial ...
Page 100 - SYSTEM MANAGEMENT SUPPORT; Table 4–23. System Management Control Registers; System Management Control Registers
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-51 4.8 SYSTEM MANAGEMENT SUPPORT This section describes the hardware support of functions involving security, safety, identification,and power consumption of t...
Page 101 - FLASH ROM WRITE PROTECT
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-52 4.8.1 FLASH ROM WRITE PROTECT The system BIOS firmware is contained in a flash ROM device that can be re-written withupdated code if necessary. The ROM is wr...
Page 102 - Diskette drive; USER SECURITY; keystrokes. This initiates an SMI and the
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-53 4.8.3 I/O SECURITY The 87307 I/O controller allows various I/O functions to be disabled through configurationregisters. In addition, the configuration regis...
Page 103 - TEMPERATURE SENSING; F the THERMTRIP- signal is asserted and recorded in a
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-54 4.8.5 TEMPERATURE SENSING This system employs two sensors for monitoring the temperature inside the chassis. A thermisterattached to the heat sink of the Pen...
Page 104 - SMART COVER LOCK
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-55 4.8.6 SMART COVER LOCK The chassis cover (also known as the “hood”) can be locked to prevent unauthorized personnelfrom removing the cover and changing the ...
Page 105 - POWER MANAGEMENT
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-56 4.8.8 POWER MANAGEMENT This system provides baseline hardware support of ACPI- and APM-compliant firmware andsoftware. The major power-consuming components (...
Page 106 - Hard Drive Spindown Control
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 4-57 4.8.8.3 Hard Drive Spindown Control The timeout parameter stored in the SIT record 04h and indexed through CMOS location 2Ah(bits <4..0>) represents t...
Page 108 - Chapter 5 INPUT/OUTPUT INTERFACES
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-1 Chapter 5INPUT/OUTPUT INTERFACES 5. Chapter 5 INPUT/OUTPUT INTERFACES 5.1 INTRODUCTION This chapter describes the standard (i.e., system board) interfaces th...
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
Chapter 5 Input/Output Interfaces 5-2 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.2.1.1 IDE Configuration Registers The IDE controller is integrated into the south bridge (82371) component and configured as aPCI device with bus m...
Page 110 - Table 5–3. IDE ATA Control Registers; IDE ATA Control Registers; The following paragraphs describe the IDE ATA control registers.
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-3 5.2.1.3 IDE ATA Control Registers The IDE controller of the 82586 decodes the addressing of the standard AT attachment (ATA)registers for the connected drive...
Page 111 - This register defines either:
Chapter 5 Input/Output Interfaces 5-4 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 The contents of the Error register are interpreted as a diagnostic status byte after the execution ofa diagnostic command or when the system is initi...
Page 113 - Table 5–4. IDE Controller Commands; IDE Controller Commands
Chapter 5 Input/Output Interfaces 5-6 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 Command Register, I/O Port 1F7h/177h (Write Only) The IDE controller commands are written to this register. The command write action should bepreface...
Page 115 - IDE CONNECTOR; 0-Pin IDE Connector Pinout
Chapter 5 Input/Output Interfaces 5-8 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.2.2 IDE CONNECTOR This system uses a standard 40-pin connector for IDE devices. Device power is supplied througha separate connector. Figure 5–1. 4...
Page 116 - DISKETTE DRIVE INTERFACE; Execution phase - The controller carries out the command.
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-9 5.3 DISKETTE DRIVE INTERFACE The diskette drive interface supports up to two diskette drives, each of which connect to astandard 34-pin diskette drive connec...
Page 117 - DISKETTE DRIVE PROGRAMMING; Table 5–6. Diskette Drive Controller Configuration Registers; Diskette Drive Interface Configuration Registers
Chapter 5 Input/Output Interfaces 5-10 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.3.1 DISKETTE DRIVE PROGRAMMING 5.3.1.1 Diskette Drive Interface Configuration The diskette drive controller must be configured for a specific addr...
Page 118 - Diskette Drive Interface Control; Diskette Drive Interface Control Registers
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-11 5.3.1.2 Diskette Drive Interface Control The BIOS function INT 13 provides basic control of the diskette drive interface. The diskettedrive interface can be...
Page 120 - DISKETTE DRIVE CONNECTOR; Table 5–8. 34-Pin Diskette Drive Connector Pinout; 4-Pin Diskette Drive Connector Pinout
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-13 5.3.2 DISKETTE DRIVE CONNECTOR This system uses a standard 34-pin connector (refer to Figure 5-2 and Table 5-8 for the pinout)for diskette drives. Drive pow...
Page 121 - SERIAL INTERFACES; Figure 5–3. Serial Interfaces Block Diagram; DB-9 Serial Connector Pinout
Chapter 5 Input/Output Interfaces 5-14 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.4 SERIAL INTERFACES The serial interfaces transmit and receive asynchronous serial data with external devices. Theserial interface function is pro...
Page 122 - SERIAL INTERFACE PROGRAMMING; Table 5–10. Serial Interface Configuration Registers; Serial Interface Configuration Registers
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-15 5.4.2 SERIAL INTERFACE PROGRAMMING 5.4.2.1 Serial Interface Configuration The serial interfaces must be configured for a specific address range (COM1, COM2,...
Page 123 - Serial Interface Control; Table 5–11. Serial Interface Control Registers; Serial Interface Control Registers
Chapter 5 Input/Output Interfaces 5-16 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.4.2.2 Serial Interface Control The BIOS function INT 14 provides basic control of the serial interface. The serial interface canbe controlled by s...
Page 125 - This register specifies the data transmission format.; This register controls the modem signal lines
Chapter 5 Input/Output Interfaces 5-18 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 FIFO Control Register, I/O Port 3FAh/2FAh (Write Only) This write-only register enables and clears the FIFOs and sets the trigger level and DMA mode...
Page 126 - This register is not used in this system.
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-19 Line Status Register, I/O Port 3FDh/2FDh (Read Only) This register contains the status of the current data transfer. Bits <2..0> are cleared when read...
Page 127 - PARALLEL INTERFACE
Chapter 5 Input/Output Interfaces 5-20 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.5 PARALLEL INTERFACE The parallel interface provides connection to a peripheral device that has a compatible interface,the most common being a pri...
Page 128 - ENHANCED PARALLEL PORT MODE; NOTE: The 87307 does not support ECP v1.7 submode of ECP mode 4.
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-21 5.5.2 ENHANCED PARALLEL PORT MODE In Enhanced Parallel Port (EPP) mode, increased data transfers are possible (up to 2 MB/s) dueto a hardware protocol that ...
Page 129 - PARALLEL INTERFACE PROGRAMMING; Table 5–12. Parallel Interface Configuration Registers; Parallel Interface Configuration Registers
Chapter 5 Input/Output Interfaces 5-22 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.5.4 PARALLEL INTERFACE PROGRAMMING 5.5.4.1 Parallel Interface Configuration The parallel interface must be configured for a specific address range...
Page 130 - Parallel Interface Control; Table 5–13. Parallel Interface Control Registers; Parallel Interface Control Registers
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-23 5.5.4.2 Parallel Interface Control The BIOS function INT 17 provides simplified control of the parallel interface. Basic functionssuch as initialization, ch...
Page 131 - This register provides the printer control functions.
Chapter 5 Input/Output Interfaces 5-24 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 Status Register, I/O Port 379h, Read Only This register contains the current printer status. Reading this register clears the interruptcondition of ...
Page 132 - A read of this location yields 10h, while writes have no effect.; This register defines the ECP mode functions.
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-25 FIFO Register, I/O Port 7F8h (ECP Mode Only) While in ECP/forward mode, this location is used for filling the 16-byte FIFO with data bytes.Reads have no eff...
Page 133 - PARALLEL INTERFACE CONNECTOR; Table 5–14. DB-25 Parallel Connector Pinout
Chapter 5 Input/Output Interfaces 5-26 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.5.5 PARALLEL INTERFACE CONNECTOR Figure 5-5 and Table 5-14 show the connector and pinout of the parallel interface connector. Figure 5–5. Parallel...
Page 134 - KEYBOARD/POINTING DEVICE INTERFACE
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-27 5.6 KEYBOARD/POINTING DEVICE INTERFACE The keyboard/pointing device interface provides the connection of an enhanced keyboard and amouse using PS/2-type con...
Page 136 - POINTING DEVICE INTERFACE OPERATION; Table 5–16. Keyboard/Mouse Interface Configuration Registers; Keyboard/Mouse Interface Configuration Registers
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-29 5.6.2 POINTING DEVICE INTERFACE OPERATION The pointing device (typically a mouse) connects to a 6-pin DIN-type connector that is identicalto the keyboard co...
Page 137 - Output buffer reads
Chapter 5 Input/Output Interfaces 5-30 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.6.3.2 8042 Control The BIOS function INT 16 is typically used for controlling interaction with the keyboard. Sub-functions of INT 16 conduct the b...
Page 138 - CPU Commands To The 8042
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-31 Table 5-18 lists the commands that can be sent to the 8042 by the CPU. The 8042 uses IRQ1 forgaining the attention of the CPU.Table 5–17. CPU Commands To Th...
Page 140 - KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR; Figure 5–7. Keyboard or Pointing Device Interface Connector; Table 5–18. Keyboard/Pointing Device Connector Pinout
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-33 5.6.4 KEYBOARD/POINTING DEVICE INTERFACE CONNECTOR There are separate connectors for the keyboard and pointing device. Both connectors are identicalboth phy...
Page 141 - UNIVERSAL SERIAL BUS INTERFACE; Table 5–19. USB Interface Configuration Registers
Chapter 5 Input/Output Interfaces 5-34 Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition – September 1998 5.7 UNIVERSAL SERIAL BUS INTERFACE The Universal Serial Bus (USB) interface provides up to 12 Mb/s data transfers between the hostsystem and periphe...
Page 142 - USB CONTROL; USB Control Registers; USB CONNECTOR; The USB interface provides two identical connectors (ports A and B).
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 5-35 5.7.3 USB CONTROL The USB is controlled through I/O registers as listed in table 5-20.Table 5–20. USB Control Registers Table 5-20. USB Control Registers I/...
Page 144 - Chapter 6 Audio Subsystem; This chapter covers the following subjects:
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 6-1 Chapter 6AUDIO SUBSYSTEM 6. Chapter 6 Audio Subsystem 6.1 INTRODUCTION This chapter describes the audio subsystem, which features Compaq Premier Sound. The au...
Page 145 - FUNCTIONAL DESCRIPTION
Chapter 6 Audio Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 6-2 6.2 FUNCTIONAL DESCRIPTION A block diagram of the audio subsystem is shown in Figure 6-1. The architecture is based on theES1869 audio controller that provid...
Page 146 - Figure 6–1. Audio Subsystem Block Diagram
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 6-3 Figure 6–1. Audio Subsystem Block Diagram ISA Bus ES1869 Audio Controller Mic In Line In CD Audio (L) (R) (L) (R) HeadphonesOut (L) (R) LineOut (L) (R) Mute (...
Page 147 - PCM AUDIO PROCESSING; Figure 6–2. Analog Signal Sampling/Quantizing
Chapter 6 Audio Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 6-4 6.2.1 PCM AUDIO PROCESSING The audio subsystem uses pulse code modulation (PCM) for processing audio that is applied fromexternal sources to the Mic In and L...
Page 148 - DAC Operation; Figure 6–3. DAC Operation; A. Quantized Value Decoding
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 6-5 6.2.1.2 DAC Operation The digital-to-analog conversion (DAC) simply reverses the procedure of the ADC. The digitalaudio data stream is received by the DAC and...
Page 149 - PCM Configuration Modes; Table 6–1. Audio Mode Differences; Audio Mode Differences; PCM Bus Cycles
Chapter 6 Audio Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 6-6 6.2.1.3 PCM Configuration Modes PCM operation can be configured for compatible ( common sound board functionality) mode orset up for extended mode, which has...
Page 150 - FM SYNTHESIS AUDIO PROCESSING; Figure 6–5. FM Synthesis Patch
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 6-7 6.2.2 FM SYNTHESIS AUDIO PROCESSING The audio subsystem supports playback of MIDI (.MID) files. A .MID file does not containaudio information in the same way ...
Page 151 - PROGRAMMING; Automatic
Chapter 6 Audio Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 6-8 6.3 PROGRAMMING All programming aspects of the audio subsystem relate directly to the programmability of theES1869 controller, upon which the audio subsystem...
Page 152 - CONTROL; Audio Subsystem I/O Map; PCM Control; Compatibility Mode Audio Mixer Control Register Mapping
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 6-9 6.3.2 CONTROL The audio subsystem is controlled through I/O mapped registers listed in Table 6-2. Table 6–2. Audio Subsystem I/O Map Table 6-2. Audio Subsyste...
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
Chapter 6 Audio Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 6-10 The Extended Mode registers are listed in Table 6-4. Like the compatibility registers listedpreviously, these registers are accessed by writing the index va...
Page 154 - Table 6–6. Audio Subsystem Specifications; Audio Subsystem Specifications
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition–- September1998 6-11 6.4 SPECIFICATIONS Table 6–6. Audio Subsystem Specifications Table 6-6. Audio Subsystem Specifications Paramemter Measurement Sampling Rate 5.51 KHz to 44 KH...
Page 156 - Chapter 7 POWER SUPPLY AND DISTRIBUTION; Figure 7–1. Power Distribution and Control, Block Diagram
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-1 Drives 110/220 VAC Chapter 7POWER and SIGNALDISTRIBUTION 7. Chapter 7 POWER SUPPLY AND DISTRIBUTION 7.1 INTRODUCTION This chapter describes the power supply ...
Page 157 - Chapter 7 Power and Signal Distribution; POWER SUPPLY ASSEMBLY; Table 7-1 shows the specifications for the power supply.
Chapter 7 Power and Signal Distribution Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-2 7.2.1 POWER SUPPLY ASSEMBLY The power supply assembly is contained in a single unit that features a selectable input voltage:90-132 VAC and 180...
Page 158 - POWER CONTROL; Power LED Indications; Power LED
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-3 7.2.2 POWER CONTROL The power supply assembly is controlled digitally by the PS On signal (Figure 6-1). When PS Onis asserted, the Power Supply Assembly is a...
Page 159 - PS On Control Select
Chapter 7 Power and Signal Distribution Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-4 7.2.2.3 PS On Control Select The assertion of the PS On signal can be controlled through DIP switch SW1-6 as follows: SW1-6 Closed (on) – PS On...
Page 160 - POWER DISTRIBUTION; Figure 7–2. Power Cable Diagram
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-5 7.3 POWER DISTRIBUTION 7.3.1 3.5/5/12 VDC DISTRIBUTION The power supply assembly includes a multi-connector cable assembly that routes +3.3 VDC, +5VDC, -5 VD...
Page 161 - LOW VOLTAGE DISTRIBUTION; Figure 7–3. Low Voltage Supply, Block Diagram
Chapter 7 Power and Signal Distribution Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-6 7.3.2 LOW VOLTAGE DISTRIBUTION Voltages less than 3.3 VDC and processor core voltage are produced through regulator circuitryon the system boar...
Page 162 - SIGNAL DISTRIBUTION; Figure 7–4. Signal Distribution Diagram; System
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-7 7.4 SIGNAL DISTRIBUTION Figure 7-4 shows general signal distribution between the main subassemblies of the system unit. NOTES: [1] CDS models and minitowers....
Page 163 - Figure 7–5. Backplane Header Pinouts
Chapter 7 Power and Signal Distribution Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 7-8 Pins Function 1,3 Cover Lock & 12 VDC 2,3 Cover Unlock & 12 VDC 4 Not connected 5 Power LED (-) 6 HD LED (-) 7 Power LED (+) 8 HD LED (...
Page 164 - Chapter 8 BIOS ROM; Windows for Workgroups 3.11
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-1 Chapter 8BIOS ROM 8. Chapter 8 BIOS ROM 8.1 INTRODUCTION The Basic Input/Output System (BIOS) of the computer is a collection of machine languageprograms sto...
Page 165 - BOOT BLOCK
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-2 8.2 BOOT/RESET FUNCTIONS The system supports new system boot functions to support remote ROM flashing and PC97requirements. This system also supports the EL Torito ...
Page 166 - MEMORY DETECTION AND CONFIGURATION; bus to obtain data on the following DIMM parameters:
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-3 8.3 MEMORY DETECTION AND CONFIGURATION This system uses the Serial Presence Detect (SPD) method of determining the installed DIMMconfiguration. The BIOS comm...
Page 167 - DESKTOP MANAGEMENT SUPPORT; Desktop Management Functions (INT15)
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-4 8.4 DESKTOP MANAGEMENT SUPPORT Desktop Management deals with issues of security, identification, and system managementfunctions. Desktop Management is provided by B...
Page 169 - SYSTEM ID
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-6 8.4.1 SYSTEM ID The INT 15, AX=E800h BIOS function can be used to identify the system board. This functionwill return the system ID in the BX register. System Board...
Page 176 - EDID RETRIEVE; 720-Intellisafe Hard Drive detects imminent failure
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-13 8.4.3 EDID RETRIEVE The BIOS function INT 15, AX=E813h is a tri-modal call that retrieves the VESA extendeddisplay identification data (EDID). Two subfuncti...
Page 177 - SYSTEM MAP RETRIEVAL
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-14 8.4.5 SYSTEM MAP RETRIEVAL The BIOS function INT 15, AX=E820h will return base memory and ISA/PCI memorycontiguous with base memory as normal memory ranges. This r...
Page 178 - FLASH ROM FUNCTIONS
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-15 8.4.6 FLASH ROM FUNCTIONS The system BIOS may be upgraded by flashing the ROM using the INT 15, AX=E822h BIOSinterface, which includes the necessary subfunc...
Page 179 - ACCESSING CMOS
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-16 8.4.8 ACCESSING CMOS Configuration memory data can be retrieved with the BIOS call INT 15, AX=E823h. This tri-modal function retrieves a single byte from the CMOS ...
Page 181 - SECURITY FUNCTIONS
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-18 [1] Determined at runtime. 8.4.10 SECURITY FUNCTIONS The INT 15 AX=E846h BIOS function is used to control various security features of the system.This function may...
Page 182 - PNP SUPPORT; PnP BIOS Functions
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-19 8.5 PNP SUPPORT The BIOS includes Plug ’n Play (PnP) support for PnP version 1.0A. NOTE: For full PnP functionality to be realized, all peripherals used in ...
Page 183 - SMBIOS
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-20 8.5.1 SMBIOS In support of the DMI specification the PnP functions 50h and 51h are used to retrieve theSMBIOS data. Function 50h retrieves the number of structures...
Page 184 - POWER MANAGEMENT FUNCTIONS; On – The computer is running normally and is drawing full power.; ACPI SUPPORT
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-21 8.6 POWER MANAGEMENT FUNCTIONS The BIOS ROM provides three types of power management support: independent PM support;APM support, and ACPI support. 8.6.1 IN...
Page 185 - APM SUPPORT
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-22 8.6.3 APM SUPPORT Advanced Power Management (APM) BIOS support provides interaction between the BIOSROM and the operating system (OS). The BIOS advises the OS when...
Page 186 - APM BIOS Functions (INT15)
Technical Reference Guide Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-23 Standby - The computer is in a low power state: video is off, some subsystems may be drawingless power, and the microprocessor is halted except for servicin...
Page 187 - USB LEGACY SUPPORT; End
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minitower Form Factors Third Edition - September 1998 8-24 8.7 USB LEGACY SUPPORT The BIOS ROM checks the USB port, during POST, for the presence of a USB keyboard. Thisallows a system with only a USB keyboard to be used d...
Page 188 - Appendix A ERROR MESSAGES AND CODES; Power-On Messages; BEEP/KEYBOARD LED CODES; Beep/Keyboard LED Codes
Technical Reference Guide Compaq Personal Computers Changed – April 1998 A-1 Appendix AERROR MESSAGES AND CODES A. Appendix A ERROR MESSAGES AND CODES A.1 INTRODUCTION This appendix lists the error codes and a brief description of the probable cause of the error. Notethat not all errors listed in th...
Page 190 - Table A–4. Processor Error Messages; Processor Error Messages
Technical Reference Guide Compaq Personal Computers Changed – April 1998 A-3 A.5 PROCESSOR ERROR MESSAGES (1xx-xx) Table A–4. Processor Error Messages Table A-4. Processor Error Messages Message Probable Cause Message Probable Cause 101-01 CPU test failed 105-08 Port 61 bit <1> not at one 101-...
Page 191 - Table A–5. Memory Error Messages; Memory Error Messages; Table A–6. Keyboard Error Messages; Keyboard Error Messages
Appendix A Error Messages and Codes Compaq Personal Computers Changed - April 1998 A-4 A.6 MEMORY ERROR MESSAGES (2xx-xx) Table A–5. Memory Error Messages Table A-5. Memory Error Messages Message Probable Cause 200-04 Real memory size changed 200-05 Extended memory size changed 200-06 Invalid memory...
Page 192 - Table A–7. Printer Error Messages; Printer Error Messages
Technical Reference Guide Compaq Personal Computers Changed – April 1998 A-5 A.8 PRINTER ERROR MESSAGES (4xx-xx) Table A–7. Printer Error Messages Table A-7. Printer Error Messages Message Probable Cause Message Probable Cause 401-01 Printer failed or not connected 402-10 Interrupt test and control ...
Page 193 - Table A–9. Diskette Drive Error Messages; Diskette Drive Error Messages; Table A–10. Serial Interface Error Messages; Serial Interface Error Messages
Appendix A Error Messages and Codes Compaq Personal Computers Changed - April 1998 A-6 A.10 DISKETTE DRIVE ERROR MESSAGES (6xx-xx) Table A–9. Diskette Drive Error Messages Table A-9. Diskette Drive Error Messages Message Probable Cause Message Probable Cause 6xx-01 Exceeded maximum soft error limit ...
Page 194 - Table A–11. Serial Interface Error Messages
Technical Reference Guide Compaq Personal Computers Changed – April 1998 A-7 A.12 MODEM COMMUNICATIONS ERROR MESSAGES (12xx-xx) Table A–11. Serial Interface Error Messages Table A-11. Serial Interface Error Messages Message Probable Cause Message Probable Cause 1201-XX Modem internal loopback test 1...
Page 195 - Table A–12. Hard Drive Error Messages; Hard Drive Error Messages
Appendix A Error Messages and Codes Compaq Personal Computers Changed - April 1998 A-8 A.13 HARD DRIVE ERROR MESSAGES (17xx-xx) Table A–12. Hard Drive Error Messages Table A-12. Hard Drive Error Messages Message Probable Cause Message Probable Cause 17xx-01 Exceeded max. soft error limit 17xx-51 Fai...
Page 196 - Table A–13. Hard Drive Error Messages; Table A–14. Hard Drive Messages
Technical Reference Guide Compaq Personal Computers Changed – April 1998 A-9 A.14 HARD DRIVE ERROR MESSAGES (19xx-xx) Table A–13. Hard Drive Error Messages Table A-13. Hard Drive Error Messages Message Probable Cause Message Probable Cause 19xx-01 Drive not installed 19xx-21 Got servo pulses second ...
Page 197 - Table A–15. Audio Error Messages; Audio Error Message; Table A–16. Network Interface Error Messages; Network Interface Error Messages
Appendix A Error Messages and Codes Compaq Personal Computers Changed - April 1998 A-10 A.16 AUDIO ERROR MESSAGES (3206-xx) Table A–15. Audio Error Messages Table A-15. Audio Error Message Message Probable Cause 3206-xx Audio subsystem internal error A.17 NETWORK INTERFACE ERROR MESSAGES (60xx-xx) T...
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
Technical Reference Guide Compaq Personal Computers Changed – April 1998 A-11 A.18 SCSI INTERFACE ERROR MESSAGES (65xx-xx, 66xx-xx, 67xx-xx) Table A–17. SCSI Interface Error Messages Table A-17. SCSI Interface Error Messages Message Probable Cause Message Probable Cause 6nyy-02 Drive not installed 6...
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
Appendix A Error Messages and Codes Compaq Personal Computers Changed - April 1998 A-12 A.20 CEMM PRIVILEDGED OPS ERROR MESSAGES Table A–19. CEMM Privileged Ops Error Messages Table A-19. CEMM Privileged Ops Error Messages Message Probable Cause Message Probable Cause 00 LGDT instruction 04 LL3 inst...
Page 200 - Appendix B ASCII CHARACTER SET; key and using the Numeric; Alt; ASCII Character Set
Technical Reference Guide Compaq Personal Computers Original - July 1996 B-1 Appendix BASCII CHARACTER SET B. Appendix B ASCII CHARACTER SET B.1 INTRODUCTION This appendix lists, in Table B-1, the 256-character ASCII code set including the decimal andhexadecimal values. All ASCII symbols may be call...
Page 202 - Appendix C KEYBOARD; This appendix covers the following keyboard types:
Technical Reference Guide Compaq Personal Computers Change –- April 1998 C-1 Appendix CKEYBOARD C. Appendix C KEYBOARD C.1 INTRODUCTION This appendix describes the Compaq keyboard that is included as standard with the system unit.The keyboard complies with the industry-standard classification of an ...
Page 203 - KEYSTROKE PROCESSING; Figure C–1. Keystroke Processing Elements, Block Diagram
Appendix C Keyboard Compaq Personal Computers Changed - April 1998 C-2 KeyboardInterface(System Unit) Data/ CLK C.2 KEYSTROKE PROCESSING A functional block diagram of the keystroke processing elements is shown in Figure C-1. Power(+5 VDC) is obtained from the system through the PS/2-type interface. ...
Page 204 - TRANSMISSIONS TO THE SYSTEM; The enhanced keyboard has three operating modes:
Technical Reference Guide Compaq Personal Computers Change –- April 1998 C-3 C.2.1 TRANSMISSIONS TO THE SYSTEM The keyboard processor sends two main types of data to the system; commands (or responses tosystem commands) and keystroke scan codes. Before the keyboard sends data to the system(specifica...
Page 205 - KEYBOARD LAYOUTS
Appendix C Keyboard Compaq Personal Computers Changed - April 1998 C-4 C.2.2 KEYBOARD LAYOUTS C.2.2.1 Standard Enhanced Keyboards Figure C–3. U.S. English (101-Key) Keyboard Key Positions Figure C–4. National (102-Key) Keyboard Key Positions 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 1...
Page 206 - Windows Enhanced Keyboards
Technical Reference Guide Compaq Personal Computers Change –- April 1998 C-5 C.2.2.2 Windows Enhanced Keyboards Figure C–5. U.S. English Windows (101W-Key) Keyboard Key Positions Figure C–6. National Windows (102W-Key) Keyboard Key Positions 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 1...
Page 207 - KEYS
Appendix C Keyboard Compaq Personal Computers Changed - April 1998 C-6 C.2.3 KEYS All keys generate a make code (when pressed) and a break code (when released) with theexception of the Pause key (pos. 16), which produces a make code only. All keys, again, with the exception of the Pause key, are als...
Page 208 - Multi-Keystroke Functions
Technical Reference Guide Compaq Personal Computers Change –- April 1998 C-7 C.2.3.2 Multi-Keystroke Functions Shift - The Shift key (pos. 75/86), when held down, produces a shift state (upper case) for keys in positions 17-29, 30, 39-51, 60-70, and 76-85 as long as the Caps Lock key (pos. 59) is to...
Page 209 - Windows Keystrokes
Appendix C Keyboard Compaq Personal Computers Changed - April 1998 C-8 C.2.3.3 Windows Keystrokes Windows-enhanced keyboards include three additional key positions. Key positions 110 and 111(marked with the Windows logo ) have the same functionality and are used by themselvesor in combination with o...
Page 210 - KEYBOARD COMMANDS; SCAN CODES; Mode 3 generates a different scan code set from Modes 1 and 2. Code
Technical Reference Guide Compaq Personal Computers Change –- April 1998 C-9 C.2.4 KEYBOARD COMMANDS Table C-1 lists the commands that the keyboard can send to the system (specifically, to the 8042-type logic). Table C–1. Keyboard-to-System Commands Table C-1. Keyboard-to-System Commands Command Val...
Page 211 - Table C–2. Keyboard Scan Codes; Keyboard Scan Codes
Appendix C Keyboard Compaq Personal Computers Changed - April 1998 C-10 Table C–2. Keyboard Scan Codes Table C-2. Keyboard Scan Codes KeyPos. Legend Mode 1 Mode 2 Mode 3 1 Esc 01/81 76/F0 76 08/na 2 F1 3B/BB 05/F0 05 07/na 3 F2 3C/BC 06/F0 06 0F/na 4 F3 3D/BD 04/F0 04 17/na 5 F4 3E/BE 0C/F0 0C 1F/na...
Page 214 - Appendix D Compaq 10/100 TX PCI Intel WOL UTP Controller Card
Technical Reference Guide Compaq Personal Computers Changed - June 1998 D-1 Appendix DCOMPAQ 10/100 TX PCI INTELWOL UTP CONTROLLER CARD D. Appendix D Compaq 10/100 TX PCI Intel WOL UTP Controller Card D.1 INTRODUCTION This appendix describes the Compaq 10/100 TX PCI Intel WOL UTP Controller card (# ...
Page 215 - The LEDs provide the following indications:
Appendix D Compaq 10/100 TX PCI Intel WOL UTP Controller Card Compaq Personal Computers Changed - June 1998 D-2 D.2 FUNCTIONAL DESCRIPTION The Compaq 10/100 TX PCI Intel WOL UTP Controller card contains the 82558 controller (withROMs and support logic), three LED status indicators, a WOL header conn...
Page 216 - CARD POWER AND CLOCK; Digitally controlled adaptive equalization of transmission; Figure D–3. 82558 Controller Internal Architecture
Technical Reference Guide Compaq Personal Computers Changed - June 1998 D-3 TX Data TX/RXFilters D.2.2 CARD POWER AND CLOCK The controller card includes on-board power logic that receives +5 VDC power from the PCIconnector or the WOL header. The PCI CLK signal provides the clock source for the contr...
Page 217 - POWER MANAGEMENT SUPPORT
Appendix D Compaq 10/100 TX PCI Intel WOL UTP Controller Card Compaq Personal Computers Changed - June 1998 D-4 D.2.4 POWER MANAGEMENT SUPPORT The controller card provides system wake up using network events and supports both APM andACPI power management environments. NOTE: The APM and ACPI environm...
Page 218 - CONFIGURATION/CONTROL; Vender ID; Table D–1. Operating Specifications; Operating Specifications
Technical Reference Guide Compaq Personal Computers Changed - June 1998 D-5 D.3 CONFIGURATION/CONTROL The 82558 controller is a PCI device and configured though PCI configuration space registersusing PCI protocol described in chapter 4. Vender ID Device ID 8086h 1229h Control is through I/O register...
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
Technical Reference Guide Compaq Personal Computers Original - April 1998 E-1 Appendix EWIDE ULTRA SCSI HOST ADAPTER E. Appendix E Wide Ultra SCSI Host Adapter E.1 INTRODUCTION The Adaptec AHA-2940UW SCSI Host Adapter (Compaq p/n 334136-001) is a PCI peripheralthat provides high performance interfac...
Page 221 - Figure E–2. Adaptec AHA-2940U Ultra SCSI Adapter Card Block Diagram
Appendix E Wide Ultra SCSI Host Adapter Card Compaq Personal Computers Original – April 1998 E-2 E.2 FUNCTIONAL DESCRIPTION A block diagram of the Wide Ultra SCSI Card is shown in Figure E-2. The card’s architecture isbased on the AIC-7880 SCSI controller. The AIC-7880 controller includes an on-boar...
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
Technical Reference Guide Compaq Personal Computers Original - April 1998 E-3 E.3 SCSI ADAPTER PROGRAMMING E.3.1 SCSI ADAPTER CONFIGURATION The Adaptec AHA-2940U SCSI Adapter Card is a PCI device and configured using PCI protocoland PCI Configuration Space registers (PCI addresses 00h-FFh) as discus...
Page 223 - USER GUIDELINES; Table E–3. Wide Ultra SCSI Adapter Card Typical Configuration; Wide Ultra SCSI Adapter Card
Appendix E Wide Ultra SCSI Host Adapter Card Compaq Personal Computers Original – April 1998 E-4 E.5 USER GUIDELINES The adapter card follows standard SCSI guidelines in supporting up to SCSI devices using SCSIidentification numbers 0-6 (ID #7 is reserved for the adapter card). Each SCSI device chai...
Page 224 - SCSI CONNECTORS; Table E–4. SCSI Connector Pinout; SCSI Connector Pinout
Technical Reference Guide Compaq Personal Computers Original - April 1998 E-5 E.6 SCSI CONNECTORS Figure E–3. Ultra SCSI Connector (50-pin, as seen from rear of card) Table E–4. SCSI Connector Pinout Table E-3. SCSI Connector Pinout Pin Signal Function Pin Signal Function 1 GND Ground 26 DB0- Data B...
Page 225 - Table E–5. Wide Ultra SCSI Connector Pinout; Wide-Ultra SCSI Connector Pinout
Appendix E Wide Ultra SCSI Host Adapter Card Compaq Personal Computers Original – April 1998 E-6 Figure E–4. Wide Ultra SCSI Connector (68-pin, as seen from top of card) Table E–5. Wide Ultra SCSI Connector Pinout Table E-4. Wide-Ultra SCSI Connector Pinout Pin Signal Function Pin Signal Function 1 ...
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)
Technical Reference Guide Compaq Personal Computers Original - April 1998 F-1 Appendix FATI RAGE PRO AGP GRAPHICS CARDS F. Appendix F ATI RAGE PRO AGP 1X/2X Graphics Cards F.1 INTRODUCTION This appendix describes ATI RAGE PRO AGP Graphics Cards used in some models. Thesegraphics cards are based on t...
Page 227 - Figure F–2. ATI RAGE PRO AGP Graphics Card Block diagram
Appendix F ATI RAGE PRO AGP Graphics Cards Compaq Personal Computers Original - April 1998 F-2 64-Bit GraphicsMemory Bus RGB Data,Hsync, Vsync Monitor MultimediaData F.2 FUNCTIONAL DESCRIPTION The ATI RAGE PRO AGP Graphics Cards are based on the ATI RAGE PRO controller. TheAGP design provides an eco...
Page 228 - ATI RAGE PRO TURBO AGP GRAPHICS CONTROLLER
Technical Reference Guide Compaq Personal Computers Original - April 1998 F-3 VESA Connector HSync GraphicsData DisplayMonitor Red Green Blue F.2.1 ATI RAGE PRO TURBO AGP GRAPHICS CONTROLLER The ATI RAGE PRO Turbo AGP graphics controller provides most of the functionality of theintegrated graphics s...
Page 229 - DISPLAY MODES; Table F–2. 3D Graphics Display Modes; D Graphics Display Modes
Appendix F ATI RAGE PRO AGP Graphics Cards Compaq Personal Computers Original - April 1998 F-4 F.3 DISPLAY MODES The graphics modes supported by the ATI RAGE PRO AGP1X/2X card with the standard fourmegabytes are listed in Tables F-1 and F-2. To expand display mode support will require memoryexpansio...
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
Technical Reference Guide Compaq Personal Computers Original - April 1998 F-5 F.4 PROGRAMMING F.4.1 CONFIGURATION The graphics card works off the AGP bus and is configured through PCI configuration spaceregisters using PCI protocol. These registers (Table F-3) are configured by BIOS during POST Tabl...
Page 231 - MONITOR POWER MANAGEMENT CONTROL; Table F–5. Monitor Power Management Conditions; Monitor Power Management Conditions; CONNECTORS
Appendix F ATI RAGE PRO AGP Graphics Cards Compaq Personal Computers Original - April 1998 F-6 F.5 MONITOR POWER MANAGEMENT CONTROL This controller provides monitor power control for monitors that conform to the VESA displaypower management signaling (DPMS) protocol. This protocol defines different ...
Page 232 - MONITOR CONNECTOR; Table F–6. DB-15 Monitor Connector Pinout; DB-15 Monitor Connector Pinout
Technical Reference Guide Compaq Personal Computers Original - April 1998 F-7 F.6.2 MONITOR CONNECTOR Figure F–4. VGA Monitor Connector, (Female DB-15, as viewed from rear). Table F–6. DB-15 Monitor Connector Pinout Table F-6. DB-15 Monitor Connector Pinout Pin Signal Description Pin Signal Descript...
Page 233 - ATI MULTIMEDIA CHANNEL CONNECTOR; Table F–7. Multimedia Interface Connector Pinout; Multimedia Interface Connector Pinout
Appendix F ATI RAGE PRO AGP Graphics Cards Compaq Personal Computers Original - April 1998 F-8 F.6.3 ATI MULTIMEDIA CHANNEL CONNECTOR The ATI Multimedia Channel (AMC) is provided through a 40-pin header (Figure F-5) thatincludes the VESA standard feature (VSFC) connector (also known as the VGA pass-...
Page 234 - INDEX
INDEX I. 3D effects, F-287307 I/O controller, 4-49abbreviations, 1-3Accelerated Graphics Port (AGP), 4-11ACPI, D-4acronyms, 1-3administrator password, 4-52, 4-53AGP, 4-11AGP bus, 2-10analog-to-digital converter (ADC), 6-4APM, D-4APM BIOS functions, 8-23APM BIOS support, 8-22architecture, system, 2-1...
Page 235 - Specifications
graphics subsystem, 2-14graphics, 3D, F-2guidelines, SCSI user, E-4hard drive spindown, 4-57heat sink (processor), 2-12, 3-5Host bus, 2-10I/O controller (87307), 4-49I/O map, 4-46IDE interface, 5-1index addressing, 1-2interrupts maskable (IRQn), 4-23nonmaskable (NMI, SMI), 4-25 interrupts, PCI, 4-9 ...
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