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Intel D915GVWB Product Specification - Page 10

Overview - ram support

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Intel Desktop Board D915GVWB Technical Product Specification 1.2 Overview 1.2.1 Feature Summary Table 1 summarizes the major features of the Desktop Board D915GVWB. Table 1. Feature Summary Form Factor Processor Memory Chipset Video Audio I/O Control USB Peripheral Interfaces LAN Support BIOS Instantly Available PC Technology microATX Form Factor (9.60 inches by 9.60 inches [243.84 millimeters by 243.84 millimeters]) Support for an Intel® Pentium® 4 processor in an LGA775 socket with an 800 or 533 MHz system bus • Four DDR SDRAM Dual Inline Memory Module (DIMM) sockets • Support for DDR 400 MHz and DDR 333 MHz DIMMs • Support for up to 4 GB of system memory Intel® 915GV Chipset, consisting of: • Intel® 82915GV Graphics Memory Controller Hub (GMCH) • Intel® 82801FB I/O Controller Hub (ICH6) • 4 Mbit Firmware Hub (FWH) Intel® GMA900 onboard graphics subsystem Intel® High Definition Audio subsystem using the Realtek ALC860 audio codec LPC Bus I/O controller Support for USB 2.0 devices • Eight USB ports • One serial port • One parallel port • Four Serial ATA interfaces • One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support • One diskette drive interface • PS/2* keyboard and mouse ports 10/100 Mbits/sec LAN subsystem using the Intel® 82562EZ platform LAN Connect (PLC) device • Intel/AMI BIOS (resident in the 4 Mbit FWH) • Support for Advanced Configuration and Power Interface (ACPI), Plug and Play, and SMBIOS • Support for PCI Local Bus Specification Revision 2.2 • Support for PCI Express Revision 1.0a • Suspend to RAM support • Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports continued 10

Section	Page
Intel® Desktop Board D915GVWB Technical Product Specification	1
Revision History	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Contents	5
1 Product Description	9
1.1 PCI Bus Terminology Change	9
1.2 Overview	10
1.2.1 Feature Summary	10
1.2.2 Manufacturing Options	11
1.2.3 Board Layout	12
1.2.4 Block Diagram	14
1.3 Online Support	15
1.4 Processor	15
1.5 System Memory	15
1.5.1 Memory Configurations	17
1.6 Intel® 915GV Chipset	21
1.6.1 Intel 915GV Graphics Subsystem	21
1.6.2 USB	22
1.6.3 IDE Support	23
1.6.4 Real-Time Clock, CMOS SRAM, and Battery	24
1.7 PCI Express Connectors	24
1.8 I/O Controller	25
1.8.1 Serial Port	25
1.8.2 Parallel Port	25
1.8.3 Diskette Drive Controller	25
1.8.4 Keyboard and Mouse Interface	26
1.9 Audio Subsystem	26
1.9.1 Audio Subsystem Software	26
1.9.2 Audio Connectors	26
1.9.3 Intel® High Definition Audio Subsystem	27
1.10 LAN Subsystem (Optional)	28
1.10.1 Intel® 82562EZ Physical Layer Interface Device	28
1.10.2 Alert Standard Format (ASF) Support	29
1.10.3 LAN Subsystem Software	29
1.11 Hardware Management Subsystem	29
1.11.1 Hardware Monitoring and Fan Control ASIC	29
1.11.2 Thermal Monitoring	30
1.11.3 Fan Monitoring	31
1.11.4 Fan Speed Control (Intel® Precision Cooling Technology)	31
1.11.5 Chassis Intrusion and Detection	31
1.12 Power Management	31
1.12.1 ACPI	32
1.12.2 Hardware Support	34
2 Technical Reference	39
2.1 Introduction	39
2.2 Memory Resources	39
2.2.1 Addressable Memory	39
2.2.2 Memory Map	41
2.3 DMA Channels	41
2.4 Fixed I/O Map	42
2.5 PCI Configuration Space Map	43
2.6 Interrupts	44
2.7 PCI Conventional Interrupt Routing Map	45
2.8 Connectors	46
2.8.1 Back Panel Connectors	46
2.8.2 Component-side Connectors	48
2.9 Jumper Block	55
2.10 Mechanical Considerations	56
2.10.1 Form Factor	56
2.10.2 I/O Shield	57
2.11 Electrical Considerations	58
2.11.1 DC Loading	58
2.11.2 Add-in Board Considerations	58
2.11.3 Fan Connector Current Capability	58
2.11.4 Power Supply Considerations	59
2.12 Thermal Considerations	60
2.13 Reliability	62
2.14 Environmental	63
2.15 Regulatory Compliance	64
2.15.1 Safety Regulations	64
2.15.2 EMC Regulations	64
2.15.3 European Union Declaration of Conformity Statement	65
2.15.4 Product Ecology Statements	66
2.15.5 Product Certification Markings (Board Level)	67
3 Overview of BIOS Features	69
3.1 Introduction	69
3.2 BIOS Flash Memory Organization	70
3.3 Resource Configuration	70
3.3.1 PCI Autoconfiguration	70
3.3.2 PCI IDE Support	70
3.4 System Management BIOS (SMBIOS)	71
3.5 Legacy USB Support	71
3.6 BIOS Updates	72
3.6.1 Language Support	72
3.6.2 Custom Splash Screen	72
3.7 Boot Options	73
3.7.1 CD-ROM Boot	73
3.7.2 Network Boot	73
3.7.3 Booting Without Attached Devices	73
3.7.4 Changing the Default Boot Device During POST	73
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot	74
3.8.1 Peripheral Selection and Configuration	74
3.8.2 Intel Rapid BIOS Boot	74
3.9 BIOS Security Features	75
4 Error Messages and Beep Codes	77
4.1 BIOS Error Messages	77
4.2 Port 80h POST Codes	79
4.3 Bus Initialization Checkpoints	83
4.4 Speaker	84