HP Compaq dc7700 MT Specifications

Technical Reference GuideHP Compaq dx7300 and dc7700 SeriesBusiness Desktop ComputersDocument Part Number: 433473-001September 2006This document provi

1-4 www.hp.com Technical Reference GuideIntroduction1.6 Common Acronyms and AbbreviationsTable 1-1 lists the acronyms and abbreviations used in this

5-22 www.hp.com Technical Reference GuideInput/Output Interfaces5.7 Universal Serial Bus InterfaceThe Universal Serial Bus (USB) interface provides a

Technical Reference Guide www.hp.com 5-23Input/Output Interfaces5.7.1 USB Data FormatsThe USB I/F uses non-return-to-zero inverted (NRZI) encoding for

5-24 www.hp.com Technical Reference GuideInput/Output Interfaces5.7.2 USB ProgrammingProgramming the USB interface consists of configuration, which ty

Technical Reference Guide www.hp.com 5-25Input/Output InterfacesUSB ControlThe USB is controlled through I/O registers as listed in table 5-19.5.7.3 U

5-26 www.hp.com Technical Reference GuideInput/Output Interfaces5.7.4 USB Cable DataThe recommended cable length between the host and the USB device s

Technical Reference Guide www.hp.com 5-27Input/Output Interfaces5.8 Audio SubsystemThese systems use the HD audio controller of the 82801 component to

5-28 www.hp.com Technical Reference GuideInput/Output Interfaces5.8.1 HD Audio ControllerThe HD Audio Controller is a PCI Express device that is integ

Technical Reference Guide www.hp.com 5-29Input/Output Interfaces5.8.3 HD Audio CodecThe HD Audio Codec provides pulse code modulation (PCM) coding and

5-30 www.hp.com Technical Reference GuideInput/Output Interfaces5.8.4 Audio ProgrammingAudio subsystem programming consists of configuration, typicall

Technical Reference Guide www.hp.com 5-31Input/Output InterfacesAudio ControlThe audio subsystem is controlled through a set of verb commands listed i

Technical Reference Guide www.hp.com 1-5IntroductionCh Channel, chaptercm centimeterCMC cache/memory controllerCMOS complimentary metal-oxide semicond

5-32 www.hp.com Technical Reference GuideInput/Output Interfaces5.8.5 Audio SpecificationsThe specifications for the HD Audio subsystem are listed in

Technical Reference Guide www.hp.com 5-33Input/Output Interfaces5.9 Network Interface ControllerThese systems provide 10/100/1000 Mbps network support

5-34 www.hp.com Technical Reference GuideInput/Output Interfaces5.9.1 Wake-On-LAN SupportThe NIC supports the Wired-for-Management (WfM) standard of W

Technical Reference Guide www.hp.com 5-35Input/Output Interfaces5.9.4 NIC ProgrammingProgramming the NIC consists of configuration, which occurs durin

5-36 www.hp.com Technical Reference GuideInput/Output Interfaces5.9.6 NIC SpecificationsTable 5-25.NIC SpecificationsParameterModes Supported 10BASE-T

Technical Reference Guide www.hp.com 6-16Integrated Graphics Subsystem6.1 IntroductionThis chapter describes graphics subsystem that is integrated int

6-2 www.hp.com Technical Reference GuideIntegrated Graphics Subsystem6.2 Functional DescriptionThe Intel Q965 GMCH component includes an Intel Integra

Technical Reference Guide www.hp.com 6-3Integrated Graphics SubsystemThe IGC includes 2D and 3D accelerator engines working with a deeply-pipelined pr

6-4 www.hp.com Technical Reference GuideIntegrated Graphics SubsystemThe Microsoft Direct diagnostic tool included in most versions of Windows may be

Technical Reference Guide www.hp.com 6-5Integrated Graphics Subsystem6.4 Upgrading GraphicsThe PCI-E x16 slot of SFF, ST, MT, and CMT systems can acce

1-6 www.hp.com Technical Reference GuideIntroductionESCD Extended System Configuration Data (format)EV Environmental Variable (data)ExCA Exchangeable

6-6 www.hp.com Technical Reference GuideIntegrated Graphics Subsystem6.5 VGA Monitor ConnectorThese systems includes a standard VGA connector (Figure

Technical Reference Guide www.hp.com 7-17Power and Signal Distribution7.1 IntroductionThis chapter describes the power supply and method of general po

7-2 www.hp.com Technical Reference GuidePower and Signal Distribution7.2.1 Power Supply AssemblyThese systems feature power supplies with power facto

Technical Reference Guide www.hp.com 7-3Power and Signal DistributionTable 7-3 lists the specifications for the 365-watt power supply used in the MT a

7-4 www.hp.com Technical Reference GuidePower and Signal Distribution7.2.2 Power C ontro lThe power supply assembly is controlled digitally by the PS

Technical Reference Guide www.hp.com 7-5Power and Signal DistributionPower LED IndicationsA dual-color LED located on the front panel (bezel) is used

7-6 www.hp.com Technical Reference GuidePower and Signal DistributionThe wake up sequence for each event occurs as follows: Wake-On-LANThe network in

Technical Reference Guide www.hp.com 7-7Power and Signal Distribution7.2.3 Power ManagementThese systems include power management functions designed t

7-8 www.hp.com Technical Reference GuidePower and Signal Distribution7.3 Powe r Dis trib u tio nThe power supply assembly includes a multi-connector c

Technical Reference Guide www.hp.com 7-9Power and Signal DistributionFigure 7-3 shows the power supply cabling for the SFF/ST systems.Connectors not s

Technical Reference Guide www.hp.com 1-7IntroductionKb/KB kilobits/kilobytes (x 1024 bits/x 1024 bytes)Kb/s kilobits per secondkg kilogramKHz kiloher

7-10 www.hp.com Technical Reference GuidePower and Signal DistributionFigure 7-4 shows the power supply cabling for the microtower and convertible min

Technical Reference Guide www.hp.com 7-11Power and Signal Distribution7.4 Signal DistributionFigures 7-5 through 7-7 show general signal distribution

7-12 www.hp.com Technical Reference GuidePower and Signal DistributionNOTES:See Figure 7-8 for header pinout.Figure 7-6. SFF / ST Form Factor Signal D

Technical Reference Guide www.hp.com 7-13Power and Signal DistributionFigure 7-7. MT / CMT Form Factor Signal Distribution DiagramP8+12 VccPPower LEDS

7-14 www.hp.com Technical Reference GuidePower and Signal DistributionNOTE: No polarity consideration required for connection to speaker header P6.NC

Technical Reference Guide www.hp.com 8-18BIOS ROM8.1 IntroductionThe Basic Input/Output System (BIOS) of the computer is a collection of machine langu

8-2 www.hp.com Technical Reference GuideBIOS ROM8.2 ROM Flashing The system BIOS firmware is contained in a flash ROM device that can be re-written wi

Technical Reference Guide www.hp.com 8-3BIOS ROM8.2.2 Changeable Splash Screen✎A corrupted splash screen may be restored by reflashing the BIOS image

8-4 www.hp.com Technical Reference GuideBIOS ROM8.3.2 Network Boot (F12) SupportThe BIOS supports booting the system to a network server. The function

Technical Reference Guide www.hp.com 8-5BIOS ROM8.3.4 Boot Error CodesThe BIOS provides visual and audible indications of a failed system boot by usin

1-8 www.hp.com Technical Reference GuideIntroductionPC Personal computerPCA Printed circuit assemblyPCI peripheral component interconnectPCI-E PCI Exp

8-6 www.hp.com Technical Reference GuideBIOS ROM8.4 Setup UtilityThe Setup utility (stored in ROM) allows the user to configure system functions invol

Technical Reference Guide www.hp.com 8-7BIOS ROMFile (continued)Ignore Changes and ExitExits Computer Setup without applying or saving any changes.Sav

8-8 www.hp.com Technical Reference GuideBIOS ROMStorage (continued)Transfer Mode Specifies mode used for data transfer.. Options (subject to device ca

Technical Reference Guide www.hp.com 8-9BIOS ROMStorage (continued)IDE ControllerAllows you to enable or disable the primary IDE controller. This feat

8-10 www.hp.com Technical Reference GuideBIOS ROMSecurity(continued)Password Options (This selection will appear only if a power-on password is set.)A

Technical Reference Guide www.hp.com 8-11BIOS ROMSecurity(continued)DriveLock Security Allows you to assign or modify a master or user password for ha

8-12 www.hp.com Technical Reference GuideBIOS ROMAdvanced**For advanced users onlyPower-On Options Allows you to set:• POST mode (QuickBoot, FullBoot,

Technical Reference Guide www.hp.com 8-13BIOS ROMAdvanced*(continued)*For advanced users onlyPower-On Options(continued)Allows you to set: (continued)

8-14 www.hp.com Technical Reference GuideBIOS ROMAdvanced*(continued)*For advanced users onlyDevice options Allows you to set: • Printer mode (bi-dire

Technical Reference Guide www.hp.com 8-15BIOS ROM8.5 Client Management FunctionsTable 8-3 provides a partial list of the client management BIOS funct

Technical Reference Guide www.hp.com 1-9IntroductionSGRAM Synchronous Graphics RAMSIMD Single instruction multiple dataSIMM single in-line memory modu

8-16 www.hp.com Technical Reference GuideBIOS ROM8.5.1 System ID and ROM TypeDiagnostic applications can use the INT 15, AX=E800h BIOS function to id

Technical Reference Guide www.hp.com 8-17BIOS ROM8.6 SMBIOSIn support of the DMI specification the PnP functions 50h and 51h are used to retrieve the

8-18 www.hp.com Technical Reference GuideBIOS ROM

Technical Reference Guide www.hp.com A-1AError Messages and CodesA.1 IntroductionThis appendix lists the error codes and a brief description of the pr

A-2 www.hp.com Technical Reference GuideError Messages and CodesA.3 Power-On Self Test (POST) MessagesTable A-2.Power-On Self Test (POST) MessagesErro

Technical Reference Guide www.hp.com A-3Error Messages and Codes514-CPU or Chassis Fan not detected.CPU fan is not connected or may have malfunctioned

A-4 www.hp.com Technical Reference GuideError Messages and Codes1801-Microcode Patch Error A processor is installed for which the BIOS ROM has no patc

Technical Reference Guide www.hp.com A-5Error Messages and CodesA.4 System Error Messages (1xx-xx)NOTES:[1] 102 message code may be caused by one of a

A-6 www.hp.com Technical Reference GuideError Messages and CodesA.5 Memory Error Messages (2xx-xx)Table A-4.Memory Error MessagesMessage Probable Caus

Technical Reference Guide www.hp.com A-7Error Messages and CodesA.6 Keyboard Error Messages (30x-xx)211-02 Error while saving memory during random mem

1-10 www.hp.com Technical Reference GuideIntroductionVAC Volts alternating currentVDC Volts direct currentVESA Video Electronic Standards AssociationV

A-8 www.hp.com Technical Reference GuideError Messages and CodesA.7 Printer Error Messages (4xx-xx)A.8 Video (Graphics) Error Messages (5xx-xx)See Tab

Technical Reference Guide www.hp.com A-9Error Messages and CodesA.9 Diskette Drive Error Messages (6xx-xx)600-xx = Diskette drive ID test 609-xx = Dis

A-10 www.hp.com Technical Reference GuideError Messages and CodesA.10 Serial Interface Error Messages (11xx-xx)Table A-9.Serial Interface Error Messag

Technical Reference Guide www.hp.com A-11Error Messages and CodesA.11 Modem Communications Error Messages (12xx-xx)Table A-10.Modem Communications Err

A-12 www.hp.com Technical Reference GuideError Messages and CodesNOTES:[1] Local loopback mode [4] Modem auto originate test[2] Analog loopback orig

Technical Reference Guide www.hp.com A-13Error Messages and CodesA.13 Hard Drive Error Messages (17xx-xx)Table A-12 Hard Drive Error MessagesMessage P

A-14 www.hp.com Technical Reference GuideError Messages and CodesNOTE:xx = 00, Hard drive ID test xx = 19, Hard drive power mode testxx = 01, Hard dri

Technical Reference Guide www.hp.com A-15Error Messages and CodesA.14 Hard Drive Error Messages (19xx-xx)1900-xx = Tape ID test failed 1904-xx = Tape

A-16 www.hp.com Technical Reference GuideError Messages and CodesA.15 Video (Graphics) Error Messages (24xx-xx)A.16 Audio Error Messages (3206-xx)Tabl

Technical Reference Guide www.hp.com A-17Error Messages and CodesA.17 DVD/CD-ROM Error Messages (33xx-xx)A.18 Network Interface Error Messages (60xx-x

Technical Reference Guide www.hp.com 2-12System Overview2.1 IntroductionThe HP Compaq dx7300 and dc7700 Series Business Desktop Computers (Figure 2-1)

A-18 www.hp.com Technical Reference GuideError Messages and CodesA.19 SCSI Interface Error Messages (65xx-xx, 66xx-xx, 67xx-xx)n = 5, Hard drive= 6, C

Technical Reference Guide www.hp.com A-19Error Messages and CodesA.20 Pointing Device Interface Error Messages (8601-xx)Table A-19Pointing Device Inte

A-20 www.hp.com Technical Reference GuideError Messages and Codes

Technical Reference Guide www.hp.com B-1BASCII Character SetB.1 IntroductionThis appendix lists, in Table B-1, the 256-character ASCII code set includ

B-2 www.hp.com Technical Reference GuideASCII Character Set18 12 × 5 0 32 2 82 52 R 114 72 r19 13 ! ! 51 3 3 3 8 3 5 3 S 115 73 s20 14 ¶ 52 34 4 84 54

Technical Reference Guide www.hp.com B-3ASCII Character SetNOTES:[1] Symbol not displayed.Keystroke Guide:Dec #Keystroke(s)0Ctrl 21-26 Ctrl A thru Z

B-4 www.hp.com Technical Reference GuideASCII Character Set

Technical Reference Guide www.hp.com C-1CKeyboardC.1 IntroductionThis appendix describes the HP keyboard that is included as standard with the system

C-2 www.hp.com Technical Reference GuideKeyboardFigure C-1. Keystroke Processing Elements, Block DiagramWhen the system is turned on, the keyboard p

Technical Reference Guide www.hp.com C-3KeyboardC.2.1 PS/2-Type Keyboard TransmissionsThe PS/2-type keyboard sends two main types of data to the syste

2-2 www.hp.com Technical Reference GuideSystem Overview2.2 FeaturesThe following standard features are included on all series unless otherwise indicat

C-4 www.hp.com Technical Reference GuideKeyboardC.2.2 USB-Type Keyboard TransmissionsThe USB-type keyboard sends essentially the same information to t

Technical Reference Guide www.hp.com C-5KeyboardC.2.3.2 Windows Enhanced KeyboardsFigure C-5. U.S. English Windows (101W-Key) Keyboard Key Positions

C-6 www.hp.com Technical Reference GuideKeyboardC.2.3.3 Easy Access KeyboardThe Easy Access keyboard is a Windows Enhanced-type keyboard that includes

Technical Reference Guide www.hp.com C-7KeyboardC.2.4 KeysAll keys generate a Make code (when pressed) and a Break code (when released) with the excep

C-8 www.hp.com Technical Reference GuideKeyboardAlt—The Alt keys (pos. 93/95) can be used in conjunction with the same keys available for use with the

Technical Reference Guide www.hp.com C-9KeyboardC.2.4.4 Easy Access KeystrokesThe Easy Access keyboards(Figures C-7) include additional keys (also ref

C-10 www.hp.com Technical Reference GuideKeyboardC.2.5 Keyboard CommandsTable C-1 lists the commands that the keyboard can send to the system (specifi

Technical Reference Guide www.hp.com C-11KeyboardC.2.6 Scan CodesThe scan codes generated by the keyboard processor are determined by the mode the key

C-12 www.hp.com Technical Reference GuideKeyboard14 Print Scrn E0 2A E0 37/E0 B7 E0 AAE0 37/E0 B7 [1] [2]54/84 [3]E0 2A E0 7C/E0 F0 7C E0 F0 12E0 7C/

Technical Reference Guide www.hp.com C-13Keyboard35 Num Lock 45/C5 77/F0 77 76/na36 / E0 35/E0 B5E0 AA E0 35/E0 B5 E0 2A [1]E0 4A/E0 F0 4AE0 F0 12 E0

Technical Reference Guide www.hp.com 2-3System OverviewTable 2-1 shows the differences in features between the different PC series based on form facto

C-14 www.hp.com Technical Reference GuideKeyboard58 + 4E/CE [6] 79/F0 79 [6] 7C/F0 7C59 Caps Lock 3A/BA 58/F0 58 14/F0 1460 A 1E/9E 1C/F0 1C 1C/F0 1C6

Technical Reference Guide www.hp.com C-15Keyboard85 / 35/B5 4A/F0 4A 4A/F0 4A86 Shift (right) 36/B6 59/F0 59 59/F0 5987 E0 48/E0 C8E0 AA E0 48/E0 C8 E

C-16 www.hp.com Technical Reference GuideKeyboardAll codes assume Shift, Ctrl, and Alt keys inactive unless otherwise noted.NA = Not applicable[1] Shi

Technical Reference Guide www.hp.com C-17KeyboardC.3 ConnectorsTwo types of keyboard interfaces may be used in HP/Compaq systems: PS/2-type and USB-ty

C-18 www.hp.com Technical Reference GuideKeyboard

Technical Reference Guide www.hp.com Index-1IndexNumerics8259 Mode 4-12AAdvanced Digital Display (ADD2) 6-2APIC Mode 4-13audible (beep) indications 4-

Index-2 www.hp.com Technical Reference GuideIndexserial interface 5-9Serial Interface Connector 5-9serial number 1-3Setup utility 8-6Smart Cover Lock

© Copyright 2006 Hewlett-Packard Development Company, L.P.The information contained herein is subject to change without notice. Microsoft, MS-DOS, Win

2-4 www.hp.com Technical Reference GuideSystem Overview2.3 Mechanical DesignThis guide covers five form factors: Ultra-slim Desktop (USDT)—Very slim

Technical Reference Guide www.hp.com 2-5System Overview2.3.1 Cabinet LayoutsFront ViewsFigure 2-2 shows the front panel components of the Ultra Slim D

2-6 www.hp.com Technical Reference GuideSystem OverviewFigure 2-3 shows the front panel components of the Small Form Factor (SFF). and Slim Tower (ST)

Technical Reference Guide www.hp.com 2-7System OverviewFigure 2-4 shows the front panel components of the microtower (uT) form factor.Figure 2-4. HP C

2-8 www.hp.com Technical Reference GuideSystem OverviewFigure 2-5 shows the front panel components of the Convertable Minitower (CMT) form factor.Figu

Technical Reference Guide www.hp.com 2-9System OverviewRear Chassis ConnectionsTable 2-2 describes the signal connections available on the rear panels

2-10 www.hp.com Technical Reference GuideSystem Overview2.3.2 Chassis LayoutsThis section describes the internal layouts of the chassis. For detailed

Technical Reference Guide www.hp.com 2-11System OverviewSmall Form Factor / Slim Tower ChassisThe chassis layouts for the Small Form Factor (SFF) used

2-12 www.hp.com Technical Reference GuideSystem OverviewMicrotower ChassisFigure 2-8 shows the layout for the Microtower (MT) chassis used for the HP

Technical Reference Guide www.hp.com 2-13System OverviewConvertible MinitowerFigure 2-9 shows the layout for the Convertible Minitower (CMT) chassis i

Technical Reference Guide www.hp.com 5Contents1Introduction1.1 About this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-14 www.hp.com Technical Reference GuideSystem Overview2.3.3 Board LayoutsFigures 2-10 through 2-12 show the system and expansion board layouts. Figu

Technical Reference Guide www.hp.com 2-15System OverviewNOTE:See SFF and ST rear chassis illustrations for externally accessible I/O connectors.Figure

2-16 www.hp.com Technical Reference GuideSystem OverviewNOTES:See CMT rear chassis illustration for externally accessible I/O connectors.[1] Applicabl

Technical Reference Guide www.hp.com 2-17System Overview2.4 System ArchitectureThe systems covered in this guide feature an architecture based on the

2-18 www.hp.com Technical Reference GuideSystem OverviewFigure 2-13. System Architecture, Block diagramParallel I/F [4]PentiumProcessorQ965 ChipsetQ96

Technical Reference Guide www.hp.com 2-19System Overview2.4.1 Intel Processor SupportThe models covered in this guide support the following processor

2-20 www.hp.com Technical Reference GuideSystem Overview✎The processor heatsink/fan assembly mounting differs between form factors. Always use the sam

Technical Reference Guide www.hp.com 2-21System Overview2.4.3 Support ComponentsInput/output functions not provided by the chipset are handled by othe

2-22 www.hp.com Technical Reference GuideSystem Overview2.4.5 Mass StorageAll models support at least two mass storage devices, with one being externa

Technical Reference Guide www.hp.com 2-23System Overview2.4.9 Graphics SubsystemThese systems use the Q965 GMCH component that integrates an integrate

6 www.hp.com Technical Reference GuideContents3 Processor/Memory Subsystem3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-24 www.hp.com Technical Reference GuideSystem Overview2.5 SpecificationsThis section includes the environmental, electrical, and physical specificat

Technical Reference Guide www.hp.com 2-25System OverviewNOTES: [1] System weight may vary depending on installed drives/peripherals. [2] Minitower con

2-26 www.hp.com Technical Reference GuideSystem OverviewTable 2-10Diskette Drive Specifications Parameter MeasurementMedia Type 3.5 in 1.44 MB/720 KB

Technical Reference Guide www.hp.com 2-27System OverviewNOTE:[1] IDE interface on USDT models (through SATA bridge)Table 2-11Optical Drive Specificati

2-28 www.hp.com Technical Reference GuideSystem OverviewTable 2-12Hard Drive SpecificationsParameter 80 GB 160 GB 250 GBDrive Size 3.5 in 3.5 in 3.5 i

Technical Reference Guide www.hp.com 3-13Processor/Memory Subsystem3.1 IntroductionThis chapter describes the processor/memory subsystem. These system

3-2 www.hp.com Technical Reference GuideProcessor/Memory Subsystem3.2 Intel Pentium ProcessorsThese systems each feature an Intel processor in a FC-L

Technical Reference Guide www.hp.com 3-3Processor/Memory SubsystemFigure 3-2 illustrates the basic internal architecture of an Intel Pentium single-co

3-4 www.hp.com Technical Reference GuideProcessor/Memory Subsystem3.2.2 Processor UpgradingAll models use the LGA775 ZIF (Socket T) mounting socket. T

Technical Reference Guide www.hp.com 3-5Processor/Memory SubsystemThese systems support DIMMs with the following parameters: Unbuffered, compatible w

Technical Reference Guide www.hp.com 7Contents5.5.4 Parallel Interface Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6 www.hp.com Technical Reference GuideProcessor/Memory SubsystemTable 3-1 shows suggested memory configurations for these systems. Note that the USD

Technical Reference Guide www.hp.com 3-7Processor/Memory SubsystemThe SPD address map is shown in Table 3-2.NOTES:[1] Programmed as 128 bytes by the D

3-8 www.hp.com Technical Reference GuideProcessor/Memory SubsystemFigure 3-3 shows the system memory map. ✎All locations in memory are cacheable. Base

Technical Reference Guide www.hp.com 4-14System Support4.1 IntroductionThis chapter covers subjects dealing with basic system architecture and covers

4-2 www.hp.com Technical Reference GuideSystem SupportFigure 4-1. PCI Bus Devices and Functions4.2.1 PCI 2.3 Bus OperationThe PCI 2.3 bus consists o

Technical Reference Guide www.hp.com 4-3System SupportConfiguration CyclesDevices on the PCI bus must comply with PCI protocol that allows configurati

4-4 www.hp.com Technical Reference GuideSystem SupportTable 4-1 shows the standard configuration of device numbers and IDSEL connections for component

Technical Reference Guide www.hp.com 4-5System SupportThe register index (CF8h, bits <7..2>) identifies the 32-bit location within the configura

4-6 www.hp.com Technical Reference GuideSystem SupportNOTE:[1] SFF, ST, MT, and CMT form factors only.[2] CMT form factor with PCI expansion boardPCI

Technical Reference Guide www.hp.com 4-7System SupportLink LayerThe link layer provides data integrity by adding a sequence information prefix and a C

8 www.hp.com Technical Reference GuideContents8BIOS ROM8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-8 www.hp.com Technical Reference GuideSystem SupportFor a PCI Express x16 transfer, a lane will be re-used for the transfer of every17th byte. The m

Technical Reference Guide www.hp.com 4-9System Support4.2.6 PCI ConnectorsPCI 2.3 ConnectorFigure 4-5. 32-bit, 5.0-volt PCI 2.3 Bus Connector (J20,

4-10 www.hp.com Technical Reference GuideSystem SupportPCI Express ConnectorsFigure 4-6. PCI Express Bus Connectors J31 (x1) and J41(x16) on system

Technical Reference Guide www.hp.com 4-11System Support4.3 System ResourcesThis section describes the availability and basic control of major subsyste

4-12 www.hp.com Technical Reference GuideSystem Support8259 ModeThe 8259 mode handles interrupts IRQ0-IRQ15 in the legacy (AT-system) method using 825

Technical Reference Guide www.hp.com 4-13System SupportAPIC ModeThe Advanced Programmable Interrupt Controller (APIC) mode provides enhanced interrupt

4-14 www.hp.com Technical Reference GuideSystem SupportMaskable Interrupt processing is controlled and monitored through standard AT-type I/O-mapped r

Technical Reference Guide www.hp.com 4-15System SupportThe NMI Status Register at I/O port 061h contains NMI source and status data as follows:NMI Sta

4-16 www.hp.com Technical Reference GuideSystem Support4.3.2 Direct Memory AccessDirect Memory Access (DMA) is a method by which a device accesses sys

Technical Reference Guide www.hp.com 4-17System SupportDMA Page RegistersThe DMA page register contains the eight most significant bits of the 24-bit

Technical Reference Guide www.hp.com 1-11Introduction1.1 A b o u t t h i s G u i d eThis guide provides technical information about HP Compaq dx73

4-18 www.hp.com Technical Reference GuideSystem SupportThe remaining address lines are in an undefined state during the refresh cycle. The refresh ope

Technical Reference Guide www.hp.com 4-19System Support4.4 Real-Time Clock and Configuration MemoryThe Real-time clock (RTC) and configuration memory

4-20 www.hp.com Technical Reference GuideSystem Support4.4.2 Standard CMOS LocationsTable 4-12 describes standard configuration memory locations 0Ah-3

Technical Reference Guide www.hp.com 4-21System SupportPower-On / Setup PasswordThese systems include a power-on and setup passwords, which may be ena

4-22 www.hp.com Technical Reference GuideSystem SupportLevel 0—Cover removal indication is essentially disabled at this level. During POST, status bit

Technical Reference Guide www.hp.com 4-23System Support4.5.3 System StatusThese systems provide a visual indication of system boot, ROM flash, and ope

4-24 www.hp.com Technical Reference GuideSystem Support4.6 Register Map and Miscellaneous FunctionsThis section contains the system I/O map and infor

Technical Reference Guide www.hp.com 4-25System Support4.6.2 SCH5317 I/O Controller FunctionsThe SCH5317 I/O controller contains various functions suc

4-26 www.hp.com Technical Reference GuideSystem SupportThe configuration registers are accessed through I/O registers 2Eh (index) and 2Fh (data) after

Technical Reference Guide www.hp.com 5-15Input/Output Interfaces5.1 IntroductionThis chapter describes the standard (i.e., system board) interfaces th

1-2 www.hp.com Technical Reference GuideIntroduction

5-2 www.hp.com Technical Reference GuideInput/Output InterfacesSATA Configuration RegistersThe SATA controller is configured as a PCI device with bus

Technical Reference Guide www.hp.com 5-3Input/Output Interfaces5.2.2 SATA ConnectorThe 7-pin SATA connector is shown in the figure below. Figure 5-1.

5-4 www.hp.com Technical Reference GuideInput/Output Interfaces5.3 Diskette Drive InterfaceThe MT and CMT form factors support a diskette drive throug

Technical Reference Guide www.hp.com 5-5Input/Output InterfacesThe diskette drive I/F configuration registers are listed in the following table:For de

5-6 www.hp.com Technical Reference GuideInput/Output InterfacesDiskette Drive Interface ControlThe BIOS function INT 13 provides basic control of the

Technical Reference Guide www.hp.com 5-7Input/Output InterfacesNOTE: The most recently written data rate value to either DRSR or CCR will be in effect

5-8 www.hp.com Technical Reference GuideInput/Output Interfaces5.3.2 Diskette Drive ConnectorThe SFF, ST, MT, and CMT form factors use a standard 34-p

Technical Reference Guide www.hp.com 5-9Input/Output Interfaces5.4 Serial InterfaceSystems covered in this guide may include one RS-232-C type serial

5-10 www.hp.com Technical Reference GuideInput/Output InterfacesThe serial interface configuration registers are listed in the following table:Serial

Technical Reference Guide www.hp.com 5-11Input/Output Interfaces5.5 Parallel InterfaceSystems covered in this guide may include a parallel interface f

Technical Reference Guide www.hp.com 1-3Introduction1. 4 S e r i a l N u m b e rThe unit's serial number is located on a sticker placed on the

5-12 www.hp.com Technical Reference GuideInput/Output Interfaces5.5.3 Extended Capabilities Port ModeThe Extended Capabilities Port (ECP) mode, like E

Technical Reference Guide www.hp.com 5-13Input/Output InterfacesParallel Interface ControlThe BIOS function INT 17 provides simplified control of the

5-14 www.hp.com Technical Reference GuideInput/Output Interfaces5.5.5 Parallel Interface ConnectorFigure 5-4 and Table 5-12 show the connector and pin

Technical Reference Guide www.hp.com 5-15Input/Output Interfaces5.6 Keyboard/Pointing Device InterfaceThe keyboard/pointing device interface function

5-16 www.hp.com Technical Reference GuideInput/Output InterfacesTable 5-13 lists and describes commands that can be issued by the 8042 to the keyboard

Technical Reference Guide www.hp.com 5-17Input/Output InterfacesNote: [1] Used in Mode 3 only.5.6.2 Pointing Device Interface OperationThe pointing de

5-18 www.hp.com Technical Reference GuideInput/Output InterfacesThe keyboard interface configuration registers are listed in the following table:8042

Technical Reference Guide www.hp.com 5-19Input/Output InterfacesI/O Port 64hI/O port 64h is used for reading the status register and for writing comma

5-20 www.hp.com Technical Reference GuideInput/Output InterfacesA9h Test the clock and data lines of the pointing device interface and place test resu

Technical Reference Guide www.hp.com 5-21Input/Output Interfaces5.6.4 Keyboard/Pointing Device Interface ConnectorThe legacy-light model provides sepa