System Interrupts, System Direct Memory Access DMA | Compaq AP500

7-3

Hardware IRQ

IRQ 0

IRQ 1

IRQ 2

IRQ 3

IRQ 4

IRQ 5

IRQ 6

IRQ 7

IRQ 8

IRQ 9

IRQ 10

IRQ 11

IRQ 12

IRQ 13

IRQ 14

IRQ 15

Table 7-2

System Interrupts

System Function

System timer

Keyboard (not on ISA Bus)

Used by Interrupt Controller 2

Serial port (COM 2)

Serial port (COM 1)

ESS sound chip

Diskette drive

Parallel port (LPT 1)

Real-time clock

Unavailable (used for ACPI support) Unused

PCI Interrupts

Mouse

Non-catastrophic errors/CPU error Primary IDE controller Secondary IDE controller

Table 7-3

System Direct Memory Access (DMA)

Hardware DMA

DMA 0

DMA 1

DMA 2

DMA 3

DMA 4

DMA 5

DMA 6

DMA 7

System Function

Business audio (default)

Business audio (default)

Diskette drive

ECP Parallel port LPT1 (default)

DMA Controller cascading (not on ISA Bus)

Unused

Unused

Unused

Compaq Professional Workstation AP500 Maintenance and Service Guide

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Compaq AP500 manual System Interrupts, System Direct Memory Access DMA, Hardware IRQ, System Function, Hardware DMA

Contents

Professional Workstation AP500 Second Edition March Part Number Spare Part Number Contents Diagnostic Tools Removal and Replacement Procedures Diagnostic Tools System Security Index Text Conventions Vii Symbols in Text Symbols on Equipment Other Information Sources Where to Go for Additional HelpTelephone Numbers Illustrated Parts Catalog Mechanical Parts System Components 2Illustrated Parts Catalog Compaq Professional Workstation AP500 Spares Parts List Spares Parts ListReference Description Spares 4Illustrated Parts Catalog Compaq Professional Workstation AP500 Spares Parts ListReference Description Reference Cable Kits 6Illustrated Parts Catalog Description Spares Software Service Preliminaries Compaq Technician Notes 2Service Preliminaries Preliminary Warnings and Cautions Equipment Symbols Electrostatic Discharge Information 4Service Preliminaries Warranty InformationTools and Software Requirements Removal and Replacement Procedures Serial Number Service Preparations 2Removal and Replacement Procedures Cable Lock 4Removal and Replacement Procedures Workstation Feet Side Access Panel Loosening the thumbscrews and removing the side access panel 6Removal and Replacement Procedures Front Bezel Blank Drive Bezel Removing a blank drive bezel 8Removal and Replacement Procedures EMI/Cooling Shield Speaker Removing the speaker Bracket Assembly 10Removal and Replacement Procedures Replacing the I/O Bracket Assembly Expansion Boards 12Removal and Replacement ProceduresIdentifying the PCI and ISA Expansion Slots PCI/ISA Slots 14Removal and Replacement Procedures Removing a PCI or ISA Expansion Board Removing a Symbios Wide Ultra2 PCI Scsi Controller 16Removal and Replacement Procedures 12. Removing an AGP graphics controller Removing the Card Guide 13. Removing the card guide 18Removal and Replacement Procedures Removing the Backplane Board System Fan 15. Removing the system fan 20Removal and Replacement Procedures 16. Removing the fan from the bracket Mass Storage Devices Drive Positions Drive Positions 22Removal and Replacement ProceduresComponent Description Hardware Screws 18. Locating the hardware screws 24Removal and Replacement Procedures CD-ROM Drive or DVD-ROM Drive Pull the drive completely out of the drive cage 26Removal and Replacement Procedures Diskette Drive Pull the diskette drive straight out 28Removal and Replacement Procedures Removing a 7200 rpm Hard Drive from Bays 5 or Remove the EMI/cooling shield 30Removal and Replacement Procedures 26. Removing a hard drive from the hard drive bracket 27. Disconnecting the cables from the hard drive Removing a 10,000-rpm Hard Drive from Bays 5 or 32Removal and Replacement Procedures 28. Disconnecting the fan power cable 30. Removing the EMI/cooling shield 34Removal and Replacement Procedures 32. Removing a hard drive from the hard drive bracket Removing the Fan from a Hard Drive Installed Bays 5 or 33. Disconnecting the power cable 36Removal and Replacement Procedures 34. Removing the fan Removing a Hard Drive from the Removable Hard Drive Cage 38Removal and Replacement Procedures 36. Removing the removable hard drive cage Removable Hard Drive Screw Holes Installing a Hard Drive in the Removable Hard Drive CageReference Bay 40Removal and Replacement Procedures 39. Inserting a hard drive in the removable hard drive cage Scsi Cables and Guidelines Scsi Cables 42Removal and Replacement Procedures Scsi Guidelines for Installing Scsi DevicesScsi Guidelines for Optimizing Performance System Board Assembly System Board with Tray and Cage 44Removal and Replacement Procedures System Board Components System Board ComponentsReference Component 46Removal and Replacement Procedures Important Guidelines for Dimm InstallationDual Inline Memory Modules DIMMs Removing a Dimm Doing so may damage the Dimm Processor and Heatsink Assembly 48Removal and Replacement Procedures Processor Power Module 47. Removing the processor power module Primary Processor Power Module Cable Insulator 50Removal and Replacement Procedures External Battery Running Computer Setup Installing the Battery 52Removal and Replacement ProceduresPage Power Switch Cable Assembly 54Removal and Replacement Procedures Power Supply 56Removal and Replacement Procedures 51. Removing the power supply air baffle Diagnostic Tools Power-On Self-Test Post 2Diagnostic Tools Post Messages Post MessagesMessage Beeps Probable Cause Recommended Action Post Messages 4Diagnostic ToolsMessage Beeps Probable Cause Diskette Drive Type Mismatch in drive type 6Diagnostic Tools Troubleshooting Minor Problems Power Problems Solutions for Power Problems8Diagnostic Tools Problem Solutions for Diskette Drive Problems Diskette Drive ProblemsProblem Possible Solution Solutions for Display Problems Display Problems10Diagnostic Tools Solutions for Printer Problems Printer ProblemsSolutions for Display Problems Solutions for Hard Drive Problems Hard Drive Problems12Diagnostic Tools Hardware Installation Problems Solutions for Hardware Installation Problems Solutions for CD-ROM and DVD-ROM Drive Problems CD-ROM Drive and DVD-ROM Drive Problems14Diagnostic Tools Memory Problems Scsi ProblemsSolutions for Memory Problems Solutions for Scsi Problems Network Problems Solutions for Network Problems16Diagnostic Tools Problem Cause Solutions for Network Problems ProblemCause 18Diagnostic Tools Audio Hardware Conflicts Compaq Setup and Diagnostics Utilities Accessing the Compaq Utilities Menu Creating a Diagnostics Diskette 20Diagnostic Tools Computer Setup Using Computer SetupComputer Setup Features Computer Setup Selection Computer Setup Features 22Diagnostic ToolsTask Computer Setup Selection Computer Checkup Test Select Computer Checkup Test 24Diagnostic Tools View System Information Inspect Diagnostic Error Codes Managing a Diagnostics Partition Microprocessor Test Error Codes 26Diagnostic ToolsError Code Microprocessor Memory Test Error Codes Keyboard Test Error CodesMemory Keyboard Parallel Printer Test Error Codes Diskette Drive Test Error Codes28Diagnostic Tools Error Code Description Recommended Action Serial Test Error Codes Modem Communications Test Error CodesSerial Port Modem CD-ROM Drive IDE Test Error Codes Tape Drive Test Error Codes30Diagnostic Tools CD-ROM Drive IDE Video Test Error Codes Video 32Diagnostic Tools Video Test Error Codes Network Interface Test Error Codes Audio Test Error CodesError Code Description Recommended Action 3206-xx Audio 34Diagnostic Tools Scsi Error CodesScsi Device Names Scsi Test Error Codes Scsi Test Error Codes 36Diagnostic ToolsError Code Description Local ROM Upgrade Upgrading the ROM 38Diagnostic Tools Remote ROM Flash FailSafe Boot Block ROM Identifying keyboard lights 40Diagnostic Tools System requires Setup PasswordKeyboard Lights Num Caps Scroll Meaning and Required Action Compaq Insight Manager Silent Setup Command Line Interface 42Diagnostic ToolsCompaq Workstation SSD for Windows NT Remote Capability Compaq Diagnostics for Windows NT Security Features Security FeaturesFeature Purpose How It Is Established Establishing a Setup Password Using Computer Setup Password Security2System Security Establishing a Power-On Password Using Computer Setup Entering a Power-On Password Changing a Power-On or Setup PasswordDeleting a Power-On or Setup Password 4System Security Clearing a Power-On or Setup Password 3 4 5 Windows NT Workstation Password National Keyboard Delimiter CharactersNational Keyboard Delimiter Characters 6System Security Re-enabling Diskette Boot or Diskette Write Advanced Security Management Re-enabling a Serial Port or Parallel Port QuickLock/QuickBlankEnabling QuickLock and QuickBlank 8System Security Disabling the Keyboard and Mouse Interface Cable Lock ProvisionEnabling the Keyboard and Mouse Interface Jumper and Switch Information 2Jumper and Switch Information Battery JumpersSystem Board Configuration Jumper J5 Settings Switch Settings SW1 Settings450/100 MHz 500/100 MHz Hard Drives 4Jumper and Switch Information32X Max CD-ROM Drive IDE PowerStorm 300/AGP Graphics Controller Identifier Function Physical and Operating Specifications System Unit 2Physical and Operating SpecificationsMetric System Direct Memory Access DMA System InterruptsHardware IRQ System Function 4Physical and Operating Specifications System Function Shipping ConfigurationSystem I/O Address Hex System I/O EGA/VGA Memory Addresses 6Physical and Operating SpecificationsMemory Address Size System Function 325W Power Supply Specifications 325W Power SupplyInput Specifications Low Range High Range Diskette Drive 8Physical and Operating SpecificationsMB Diskette Drive Zip Drive MB ZIP Drive CD-ROM Drive 10Physical and Operating Specifications32X Max Tray-Load CD-ROM Drive IDE 32X Max CD-ROM Drive IDE DVD-ROM Drive 12Physical and Operating Specifications6X Max DVD-ROM Drive 6X Max DVD-ROM Drive GB Wide-Ultra Scsi Hard Drive 14Physical and Operating SpecificationsRpm drive 10K rpm drive GB Wide-Ultra Scsi Hard Drive 7200 rpm 16Physical and Operating Specifications GB Ultra ATA Hard Drive Drive Configuration Drive Performance GB Ultra ATA Hard Drive 7200 RPM 18Physical and Operating Specifications GB Wide Ultra2 Hard Drive 10,000 RPMValue Performance Criteria Compaq Enhanced Keyboard Dimensions Metric Audio SystemKeyboard Audio System Button Mouse Dimensions Metric 20Physical and Operating SpecificationsMouse Graphics Controllers GLoria Synergy+ Graphics Controller Maximum Color SupportMaximum Refresh Colors Supported Rate Resolutions Colors Maximum Refresh Rate Hz 22Physical and Operating SpecificationsColors Maximum Display Area Horizontal Refresh Rate kHz Vertical Refresh Rate Hz Resolutions Colors 24Physical and Operating SpecificationsMillennium G200 Graphics Controller Maximum Color Support Network Controller RJ-45 Network Cable SpecificationsEthernet Network Interface Controller NIC Reference Connector External ConnectorsPhysical Location External Connectors 2External ConnectorsReference Connector Function Connector and Icon Orange Pin Signal Connector and Icon Green Pin SignalPin Assignments Keyboard Connector and Icon Pin Signal 4External ConnectorsParallel Interface Connector and Icon Serial Interfaces Pin Signal 6External ConnectorsMonitor Ethernet RJ-45 Universal Serial Bus USB Scsi Connector 8External Connectors Line-In Connector Line-Out ConnectorMicrophone Connector Headphone Connector Index Index-2 Index-3 Index-4 Index-5 Index-6 Index-7 Index-8 Index-9 Index-10 Index-11 Index-12