HP dc7800 manual System Memory Map for maximum of 8 gigabytes

Page 38

Processor/Memory Subsystem

	1 FFFF FFFEh	High BIOS Area
		High BIOS Area
	FFE0 0000h	DMI/APIC
		DMI/APIC
		Area
	F000 0000h
		PCI
		Memory
		Area
	Main	IGC (1-64 MB)
	Main	TSEG
	Memory	TSEG
	Memory
	Area	Main
		Main
	0100 0000h	Memory
	0100 0000h
	00FF FFFFh
		Main
		Memory
	0010 0000h
	000F FFFFh	BIOS
		Extended BIOS
	DOS	Expansion Area
	Compatibilty	Legacy Video
	Area
		Base Memory
	0000 0000h

8 GB

Top of DRAM

16 MB

1MB

640 KB

Figure 3-2. System Memory Map (for maximum of 8 gigabytes)

✎All locations in memory are cacheable. Base memory is always mapped to DRAM. The next 128 KB fixed memory area can, through the north bridge, be mapped to DRAM or to PCI space. Graphics RAM area is mapped to PCI locations.

3-6

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Technical Reference Guide

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Contents Technical Reference Guide OctoberTechnical Reference Guide Contents Input/Output Interfaces Processor/Memory SubsystemSystem Support Power and Signal Distribution Integrated Graphics SubsystemSystem Bios Error Messages and Codes IndexModel Numbering Convention About this GuideAdditional Information Sources Online ViewingIntroduction Special Notices Serial NumberNotational Conventions ValuesCommon Acronyms and Abbreviations Acronyms and Abbreviations Acronym or DescriptionCPQ CMCCmos CPUFPM EscdFifo FPUAcronyms and Abbreviations Acronym or Abbreviation DescriptionPCI-E PCAPCI PCMSimm SgramSimd SmartVesa VACVDC VGASystem Overview IntroductionFeatures 4GB 8GB Feature Difference Matrix by Form FactorSodimm Dimm Function System ArchitectureArchitectural Differences By Form Factor HP Comapq dc7800 Business PC Architecture, Block diagram Intel Processor Support Components Function ChipsetChipset Components and Functionality Support Component Functions Support ComponentsSystem Memory Component Name FunctionUniversal Serial Bus Interface Mass StorageSerial and Parallel Interfaces Network Interface ControllerIntegrated Graphics Subsystem Statistics Graphics SubsystemAudio Subsystem Integrated Graphics ControllerPower Supply Electrical Specifications SpecificationsEnvironmental Specifications Factory Configuration Parameter Operating Non-operatingPhysical Specifications Parameter Usdt SFF CMTDiskette Drive Specifications Parameter MeasurementParameter Optical Drive SpecificationsDVD/CD-RW SuperMulti CD-RW/DVD-ROM Combo LightScribe ComboHard Drive Specifications Parameter 80 GB 160 GB 250 GBSystem Overview Processor/Memory Subsystem Intel Processors Intel Processor OverviewClock Processor Changing/UpgradingSupported Processors FormMemory Subsystem Memory Socket Loading Memory UpgradingMemory Mapping and Pre-allocation Channel a Channel B Socket Socket 2 Socket 4 TotalSystem Memory Map for maximum of 8 gigabytes PCI Bus Overview PCI 2.3 Bus OperationPCI Component Configuration Access PCI Bus PCI Component Function # Device # Wired toTransaction Protocol Layer PCI Express Bus OperationSoftware/Driver Layer PCI Bus Mastering DevicesPCI Interrupts PCI Power Management SupportOption ROM Mapping Link LayerPCI 2.3 Bus Connector Pinout PCI ConnectorsPCI 2.3 Connector PCI Express Connectors PCI Express Bus Connector PinoutInterrupts Apic ModeSystem Resources ModePCI Interrupt Distribution Direct Memory AccessConnector PCI slot 1 PCI slot 2 PCI slot 3 System Interrupts System BoardReal-Time Clock and Configuration Memory Clearing CmosStandard Cmos Locations Configuration Memory Cmos MapSystem Management Security FunctionsCable Lock Provision Power-On / Setup PasswordSetup Password Interface SecurityAcpi Wake-Up Events Power ManagementSmart Cover Lock Optional Acpi Wake-Up Event System Wakes FromThermal Sensing and Cooling System Status PowerLED Beeps Action RequiredSystem Status System Operational Status LED IndicationsRegister Map and Miscellaneous Functions System I/O MapSystem I/O Map Gpio FunctionsICH9 Functions Controller Functions Input/Output Interfaces Pin Description Pin Sata Connector PinoutSata Interface Pata Interface Pin Slim IDE Connector PinoutPin Signal Diskette Drive Interface Pin Diskette Drive Connector Pinout Pin Signal DescriptionDB-9 Serial Connector Pinout Serial InterfaceExtended Capabilities Port Mode Standard Parallel Port ModeEnhanced Parallel Port Mode Parallel InterfacePin Signal Function Parallel Interface ConnectorDB-25 Parallel Connector Pinout Keyboard/Pointing Device Interface Keyboard Interface OperationPointing Device Interface Operation Keyboard/Pointing Device Interface ConnectorKeyboard/Pointing Device Connector Pinout DataController Signals USDT, SFF Form Factors CMT Form Factor USB ConnectorUSB Connector Location Universal Serial Bus InterfaceUSB Cable Length Data USB Connector PinoutUSB Cable Data USB Color CodeAudio Subsystem Functional Block Diagram Audio SubsystemAudio Multistreaming HD Audio ControllerHD Audio Link Bus ADC/DAC Audio SpecificationsHD Audio Subsystem Specifications Network Interface Controller LAN I/F NICAlert Standard Format Support Power Management SupportWake-On-LAN Support NIC Specifications NIC ConnectorNIC Specifications Parameter Compatibility standard orprotocolIntegrated Graphics Subsystem Q35 IGC, Block diagram Functional DescriptionSdram Installed Maximum Memory Allocation IGC Standard 2D Display ModesResolution Maximum Refresh Rate Analog Digital Monitor Display ModesUpgrading DB-15 Monitor Connector Pinout Monitor ConnectorsAnalog Monitor Connector Digital Monitor Connector Integrated Graphics Subsystem Power Distribution Usdt Power DistributionSFF Power Distribution Usdt 135-Watt Power Supply Unit SpecificationsSFF 240-Watt Power Supply Unit Specifications Min Range Current Max Surge Tolerance Loading RippleRange or Min Current Max Surge Tolerance Loading Ripple CMT Power DistributionCMT 365-Watt Power Supply Unit Specifications Shows the power supply cabling for CMT systems Energy Star CompliancyPower Button Actions Power ControlPower Button Pressed Power Button ResultsPower Button Actions Power LED Condition Wake Up Events Wake-On-LANState System Condition System Power StatesPower Transition OS Restart Consumption To S0 by RequiredSignal Distribution CR1 +5 VDC LEDSystem Board Component Designations Power and Signal Distribution System Bios Changeable Splash Screen ROM FlashingUpgrading Network Boot F12 Support Boot FunctionsBoot Device Order Memory Detection and ConfigurationVisual power LED Audible speaker Meaning Boot Error CodesBoot Error Codes Client Management Functions INT15 Function ModeClient Management Functions System ID and ROM Type Temperature StatusDrive Fault Prediction System ID NumbersSmbios Type DataUSB Legacy Support Management Engine FunctionsIndex NumericsIndex

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