Intel D925XCV, D925XBC specifications Detailed System Memory Address Map

Page 56

Intel Desktop Board D925XCV/D925XBC Technical Product Specification

Memory-mapped I/O that is dynamically allocated for PCI Conventional and PCI Express add- in cards

The amount of installed memory that can be used will vary based on add-in cards and BIOS settings. Figure 18 shows a schematic of the system memory map. All installed system memory can be used when there is no overlap of system addresses.

4 GB

Top of System Address Space

FLASH

APIC

~20 MB

Reserved

PCI Memory Range - contains PCI, chipsets, Direct Media Interface (DMI), and ICH ranges (approximately 750 MB)

Top of usable DRAM (memory visible to the operating system)

0FFFFFH

Upper BIOS

 

 

0F0000H

area (64 KB)

 

 

 

 

0EFFFFH

Lower BIOS

 

 

area

 

 

(64 KB;

0E0000H

16 KB x 4)

 

 

 

0DFFFFH

Add-in Card

 

 

BIOS and

 

 

Buffer area

 

 

(128 KB;

 

 

16 KB x 8)

1MB

960 KB

896 KB

DRAM

Range

DOS

Compatibility

Memory

1 MB

640 KB

0C0000H

 

 

0BFFFFH

Standard PCI/

 

 

ISA Video

 

 

Memory (SMM

 

 

Memory)

0A0000H

 

128 KB

09FFFFH

 

DOS area

 

 

00000H

(640 KB)

 

768 KB

640 KB

0 MB

0 KB

OM17140

Figure 18. Detailed System Memory Address Map

56

Image 56
Contents D925XCV/D925XBC Revision History Revision Revision History DatePreface Other Common Notation Contents Technical Reference Overview of Bios Features ContentsFigures Chassis Intrusion Connector Page Summary of Board Differences PCI Bus Terminology ChangeBoard Differences Overview Feature SummaryFeature Summary Manufacturing Options Manufacturing OptionsBoard Layouts Desktop Board D925XCV ComponentsD925XCV Components Shown in Figure Item/callout from Figure DescriptionDesktop Board D925XBC Components D925XBC Components Shown in Figure Block Diagram Block DiagramFor information about Refer to Power supply connectors 1.1, Online SupportProcessor To find information about… Visit this World Wide Web siteSupported Memory Configurations System MemoryMemory Configurations Memory Channel and Dimm ConfigurationDual Channel Interleaved Mode Configurations Dual Channel Interleaved Mode Configuration with Two DIMMsDual Channel Interleaved Mode Configuration with Four DIMMs Single Channel Asymmetric Mode Configurations Single Channel Asymmetric Mode Configuration with One DimmIntel 925X Chipset 1 USBIDE Support Parallel ATE IDE InterfaceSerial ATA Interfaces RAID Boot Configuration Overview Scsi Hard Drive Activity LED Connector OptionalSerial ATA RAID Product Description For information about Refer toReal-Time Clock, Cmos SRAM, and Battery PCI Express ConnectorsAuxiliary Power AUX PWR Output Connector Parallel Port 10 I/O ControllerSerial Port Diskette Drive Controller Keyboard and Mouse InterfaceAudio Subsystem Software Audio ConnectorsAudio Subsystem Back Panel Audio Connectors 11.3 8-Channel 7.1 Audio SubsystemIs a block diagram of the 8-channel 7.1 audio subsystem Channel 5.1 Audio Subsystem Block Diagram 11.4 6-Channel 5.1 Audio SubsystemColor LED State Condition 12.2 RJ-45 LAN Connector with Integrated LEDsLAN Subsystem Alert Standard Format ASF Support LAN Subsystem SoftwareHardware Management Subsystem Hardware Monitoring and Fan Control AsicThermal Monitoring Thermal Monitoring for D925XCV BoardThermal Monitoring for D925XBC Board Power Management Fan MonitoringChassis Intrusion and Detection AcpiSystem States and Power States Effects of Pressing the Power SwitchPower States and Targeted System Power Wake-up Devices and Events Hardware SupportWake-up Devices and Events LAN Wake Capabilities Power ConnectorFan Connectors 14.2.8 PME# Signal Wake-up Support Instantly Available PC TechnologyResume on Ring Wake from USBWAKE# Signal Wake-up Support 14.2.10 +5 V Standby Power Indicator LEDTrusted Platform Module Optional System RequirementsSecurity Precautions Password ProceduresEmergency Recovery File Back Up Procedures Hard Drive Image Backup ProceduresClear Text Backup Optional Trusted Platform Module OwnershipEnabling the Trusted Platform Module Assuming Trusted Platform Module OwnershipRecovering from Desktop Board or TPM Failure Recovery ProceduresRecovering from Hard Disk Failure Clearing Trusted Platform Module Ownership Software Support Page Addressable Memory IntroductionMemory Resources Detailed System Memory Address Map DMA Channels Memory MapSystem Memory Map DMA ChannelsAddress hex Size Description Fixed I/O MapO Map Bus Device Function Number hex Description PCI Configuration Space MapPCI Configuration Space Map Interrupts InterruptsPCI Conventional Interrupt Routing Map ICH6-R Pirq Signal Name PCI Interrupt Source PCI Interrupt Routing MapConnectors Back Panel ConnectorsBack Panel Connectors For 8-Channel 7.1 Audio Subsystem Back Panel Connectors for 8-Channel 7.1 Audio SubsystemBack Panel Connectors Shown in Figure Item/callout from DescriptionBack Panel Connectors For 6-Channel 5.1 Audio Subsystem Back Panel Connectors for 6-Channel 5.1 Audio SubsystemBack Panel Connectors Shown in Figure Component-side Connectors D925XCV Component-side ConnectorsD925XCV Component-side Connectors Shown in Figure D925XBC Component-side Connectors D925XBC Component-side Connectors Shown in Figure Atapi CD-ROM Connector Front Panel Audio ConnectorFront Chassis Fan and Rear Chassis Fan Connectors Processor Fan Connector and Auxiliary Rear Fan ConnectorChassis Intrusion Connector Scsi Hard Drive Activity LED Connector OptionalSerial ATA Connectors Auxiliary Power Output ConnectorPower Supply Connectors Add-in Card Connectors Main Power ConnectorATX12V Power Connector Alternate Power ConnectorAuxiliary Front Panel Power/Sleep LED Connector Front Panel ConnectorAuxiliary Front Panel Power/Sleep LED Connector Front Panel ConnectorLED State Description States for a One-Color Power LEDStates for a Two-Color Power LED Front Panel USB Connectors Connection Diagram for Front Panel USB ConnectorsFront Panel Ieee 1394a Connectors Optional Connection Diagram for Ieee 1394a ConnectorsFunction/Mode Jumper Setting Configuration Jumper BlockMechanical Considerations 10.1 D925XCV Form FactorDesktop Board D925XBC Dimensions 10.2 D925XBC Form Factor10.3 I/O Shield 039 11.811 465 14.4 12.00 567 472 DC Loading Characteristics DC Current at Mode DC Power +3.3 +12 +5 VSBElectrical Considerations DC LoadingFan Connector Current Capability Power Supply ConsiderationsFan Connector Current Capability Fan Connector Maximum Available CurrentThermal Considerations Processor Heatsink for Omni-directional AirflowShows the locations of the localized high temperature zones Thermal Considerations for Components Component Maximum Case TemperatureReliability Desktop Board D925XCV/D925XBC Environmental Specifications Parameter Specification TemperatureEnvironmental ShockSafety Regulations Safety RegulationsRegulatory Compliance EMC RegulationsCanadian Compliance Statement European Union Declaration of Conformity StatementFCC Compliance Statement USA Recycling Considerations Product Ecology StatementsDisposal Considerations Description Marking Product Certification Markings Board LevelProduct Certification Markings Overview of Bios Features Bios Flash Memory Organization Resource ConfigurationPCI Autoconfiguration PCI IDE SupportLegacy USB Support System Management Bios SmbiosOverview of Bios Features Bios Updates Language SupportCustom Splash Screen For information about Refer to Intel World Wide Web siteBoot Options CD-ROM BootNetwork Boot Booting Without Attached DevicesIntel Rapid Bios Boot Fast Booting Systems with Intel Rapid Bios BootPeripheral Selection and Configuration Bios Security Features Supervisor and User Password Functions102 Error Message Explanation Bios Error MessagesBios Error Messages Removed then memory may be bad Boot Block Recovery Code Checkpoints Error Messages and Beep CodesPort 80h Post Codes Uncompressed Init Code CheckpointsRuntime Code Uncompressed in F000 Shadow RAM To prepare the descriptor tables Password checked. About to do programming before setup Bus Initialization Checkpoints Bus Initialization CheckpointsUpper Nibble High Byte Functions Checkpoint DescriptionLower Nibble High Byte Functions Bios Beep CodesSpeaker Beep Codes Beep Description112

D925XBC, D925XCV specifications

The Intel D925XBC and D925XCV are motherboards designed for Intel's LGA 775 socket, targeted primarily at the desktop market during the mid-2000s. These motherboards support Intel's innovative 800 MHz Front Side Bus and provide a robust platform for various computing applications, including gaming and multitasking.

One of the standout features of the D925XBC and D925XCV is their compatibility with Intel's Pentium 4 and Pentium D dual-core processors. These processors deliver impressive performance, especially for users engaging in demanding tasks such as video editing and 3D rendering. The support for dual-channel DDR2 memory allows for increased bandwidth and improved overall system performance, accommodating up to 8 GB of memory in total.

The motherboards are equipped with the Intel 925X chipset, which integrates advanced technologies. This chipset supports Intel's Enhanced Memory 64 Technology (EM64T), allowing for more efficient processing power and better resource management. The presence of the I/O Controller Hub (ICH6) also enhances connectivity options, including SATA 3.0 Gbps interfaces for faster data transfer rates and improved storage capabilities.

Regarding expansion and connectivity, both motherboards feature multiple PCI Express slots along with PCI slots, allowing users to customize their systems according to their needs. This expandability is essential for gamers and professionals looking to add advanced graphics cards and other peripherals. Additionally, these boards come with integrated audio, ensuring satisfactory sound quality without the need for additional sound cards.

The D925XBC and D925XCV motherboards also include integrated Ethernet controllers, supporting fast network connectivity essential for gaming and high-speed internet access. With multiple USB ports available, users can connect a wide variety of devices easily, enhancing the flexibility of their setups.

In terms of form factor, both boards follow the ATX layout, providing compatibility with a broad range of computer cases. This ensures ease of installation and upgrades while promoting good airflow and optimal thermal management for the components installed.

Overall, the Intel D925XBC and D925XCV motherboards integrate essential features and technologies that provide a solid foundation for desktop computing during their time. With strong processing capabilities, expandability, and good connectivity options, these boards were well-received by users looking for reliable performance and versatility in their systems.