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Intel D915GLVG D915GLVG Technical Product Specification - Page 55

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Technical Reference 2.9 Jumper Block CAUTION Do not move the jumper with the power on. Always turn off the power and unplug the power cord from the computer before changing a jumper setting. Otherwise, the board could be damaged. Figure 19 shows the location of the jumper block. The jumper block determines the BIOS Setup program's mode. Table 28 describes the jumper settings for the three modes: normal, configure, and recovery. When the jumper is set to configure mode and the computer is powered-up, the BIOS compares the processor version and the microcode version in the BIOS and reports if the two match. 1 3 J8J4 Figure 19. Location of the Jumper Block OM17810 Table 28. BIOS Setup Configuration Jumper Settings Function/Mode Normal Configure Jumper Setting 1-2 1 3 2-3 1 3 Configuration The BIOS uses current configuration information and passwords for booting. After the POST runs, Setup runs automatically. The maintenance menu is displayed. Recovery None 1 The BIOS attempts to recover the BIOS configuration. A 3 recovery diskette is required. 55

Section	Page
Intel® Desktop Board D915GLVG Technical Product Specification	1
Revision History / Disclaimer	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Contents	5
1 Product Description	9
1.1 Overview	10
1.1.1 Feature Summary	10
1.1.2 Board Layout	12
1.1.3 Block Diagram	14
1.2 Online Support	15
1.3 Processor	15
1.4 System Memory	16
1.4.1 Memory Configurations	18
1.5 Intel® 915GL Chipset	22
1.5.1 Intel® GMA900 Graphics Controller	22
1.5.2 USB	23
1.5.3 IDE Support	24
1.5.4 Real-Time Clock, CMOS SRAM, and Battery	25
1.6 PCI Express* Connectors	25
1.7 I/O Controller	26
1.7.1 Serial Port	26
1.7.2 Parallel Port	26
1.7.3 Diskette Drive Controller	26
1.7.4 Keyboard and Mouse Interface	26
1.8 Audio Subsystem	27
1.8.1 Audio Subsystem Software	27
1.8.2 Audio Connectors	27
1.8.3 Intel® High Definition Audio Subsystem	28
1.9 LAN Subsystem	29
1.9.1 10/100 Mbits/sec LAN Subsystem	29
1.9.2 LAN Subsystem Software	30
1.10 Hardware Management Subsystem	30
1.10.1 Hardware Monitoring and Fan Control ASIC	30
1.10.2 Thermal Monitoring	31
1.10.3 Fan Monitoring	32
1.10.4 Chassis Intrusion and Detection	32
1.11 Power Management	32
1.11.1 ACPI	32
1.11.2 Hardware Support	35
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	47
2.8.2 Component-side Connectors	48
2.8.3 Front Panel USB Connectors	54
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	59
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