System Memory Map for maximum of 8 gigabytes | HP dc7800 specs

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.

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Technical Reference Guide

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HP dc7800 manual System Memory Map for maximum of 8 gigabytes

Contents

Technical Reference Guide October Technical Reference Guide Contents Input/Output Interfaces Processor/Memory SubsystemSystem Support Power and Signal Distribution Integrated Graphics Subsystem System Bios Error Messages and Codes Index Model Numbering Convention About this GuideAdditional Information Sources Online Viewing Introduction Special Notices Serial NumberNotational Conventions Values Common Acronyms and Abbreviations Acronyms and Abbreviations Acronym or Description CPQ CMCCmos CPU FPM EscdFifo FPU Acronyms and Abbreviations Acronym or Abbreviation Description PCI-E PCAPCI PCM Simm SgramSimd Smart Vesa VACVDC VGA System Overview Introduction Features 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 Function Universal Serial Bus Interface Mass StorageSerial and Parallel Interfaces Network Interface Controller Integrated Graphics Subsystem Statistics Graphics SubsystemAudio Subsystem Integrated Graphics Controller Power Supply Electrical Specifications SpecificationsEnvironmental Specifications Factory Configuration Parameter Operating Non-operating Physical Specifications Parameter Usdt SFF CMT Diskette Drive Specifications Parameter Measurement Parameter Optical Drive SpecificationsDVD/CD-RW SuperMulti CD-RW/DVD-ROM Combo LightScribe Combo Hard Drive Specifications Parameter 80 GB 160 GB 250 GB System Overview Processor/Memory Subsystem Intel Processors Intel Processor Overview Clock Processor Changing/UpgradingSupported Processors Form Memory Subsystem Memory Socket Loading Memory UpgradingMemory Mapping and Pre-allocation Channel a Channel B Socket Socket 2 Socket 4 Total System Memory Map for maximum of 8 gigabytes PCI Bus Overview PCI 2.3 Bus Operation PCI Component Configuration Access PCI Bus PCI Component Function # Device # Wired to Transaction Protocol Layer PCI Express Bus OperationSoftware/Driver Layer PCI Bus Mastering Devices PCI Interrupts PCI Power Management SupportOption ROM Mapping Link Layer PCI 2.3 Bus Connector Pinout PCI ConnectorsPCI 2.3 Connector PCI Express Connectors PCI Express Bus Connector Pinout Interrupts Apic ModeSystem Resources Mode PCI Interrupt Distribution Direct Memory AccessConnector PCI slot 1 PCI slot 2 PCI slot 3 System Interrupts System Board Real-Time Clock and Configuration Memory Clearing Cmos Standard Cmos Locations Configuration Memory Cmos MapSystem Management Security Functions Cable Lock Provision Power-On / Setup PasswordSetup Password Interface Security Acpi Wake-Up Events Power ManagementSmart Cover Lock Optional Acpi Wake-Up Event System Wakes From Thermal Sensing and Cooling System Status PowerLED Beeps Action RequiredSystem Status System Operational Status LED Indications Register Map and Miscellaneous Functions System I/O Map System 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 Description DB-9 Serial Connector Pinout Serial Interface Extended Capabilities Port Mode Standard Parallel Port ModeEnhanced Parallel Port Mode Parallel Interface Pin Signal Function Parallel Interface ConnectorDB-25 Parallel Connector Pinout Keyboard/Pointing Device Interface Keyboard Interface Operation Pointing Device Interface Operation Keyboard/Pointing Device Interface ConnectorKeyboard/Pointing Device Connector Pinout Data Controller Signals USDT, SFF Form Factors CMT Form Factor USB ConnectorUSB Connector Location Universal Serial Bus Interface USB Cable Length Data USB Connector PinoutUSB Cable Data USB Color Code Audio Subsystem Functional Block Diagram Audio Subsystem Audio Multistreaming HD Audio ControllerHD Audio Link Bus ADC/DAC Audio SpecificationsHD Audio Subsystem Specifications Network Interface Controller LAN I/F NIC Alert Standard Format Support Power Management SupportWake-On-LAN Support NIC Specifications NIC ConnectorNIC Specifications Parameter Compatibility standard orprotocol Integrated Graphics Subsystem Q35 IGC, Block diagram Functional Description Sdram Installed Maximum Memory Allocation IGC Standard 2D Display Modes Resolution Maximum Refresh Rate Analog Digital Monitor Display Modes Upgrading DB-15 Monitor Connector Pinout Monitor ConnectorsAnalog Monitor Connector Digital Monitor Connector Integrated Graphics Subsystem Power Distribution Usdt Power Distribution SFF Power Distribution Usdt 135-Watt Power Supply Unit Specifications SFF 240-Watt Power Supply Unit Specifications Min Range Current Max Surge Tolerance Loading Ripple Range 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 Compliancy Power Button Actions Power ControlPower Button Pressed Power Button Results Power Button Actions Power LED Condition Wake Up Events Wake-On-LAN State System Condition System Power StatesPower Transition OS Restart Consumption To S0 by Required Signal Distribution CR1 +5 VDC LED System 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 Configuration Visual 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 Numbers Smbios Type Data USB Legacy Support Management Engine Functions Index Numerics Index