Intel Desktop Board DX79SI Technical Product Specification
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2 Technical Reference
2.1 Memory Resources ........................................................................... 43
2.1.1 Addressable Memory.............................................................. 43
2.1.2 Memory Map ......................................................................... 45
2.2 Connectors and Headers .................................................................... 45
2.2.1 Back Panel Connectors ........................................................... 46
2.2.2 Component-side Connectors and Headers ................................. 48
2.3 Jumper Block ................................................................................... 58
2.4 Mechanical Considerations ................................................................. 60
2.4.1 Form Factor .......................................................................... 60
2.5 Electrical Considerations .................................................................... 61
2.5.1 Power Supply Considerations .................................................. 61
2.5.2 Fan Header Current Capability ................................................ 62
2.5.3 Add-in Board Considerations ................................................... 62
2.6 Thermal Considerations ..................................................................... 63
2.7 Reliability ........................................................................................ 65
2.8 Environmental .................................................................................. 65
3 Overview of BIOS Features
3.1 Introduction ..................................................................................... 67
3.2 BIOS Flash Memory Organization ........................................................ 68
3.3 Resource Configuration ..................................................................... 68
3.3.1 PCI Autoconfiguration ............................................................ 68
3.4 System Management BIOS (SMBIOS) ................................................. 69
3.5 Legacy USB Support ......................................................................... 69
3.6 BIOS Updates .................................................................................. 70
3.6.1 Language Support ................................................................. 70
3.6.2 Custom Splash Screen ........................................................... 71
3.7 BIOS Recovery ................................................................................. 71
3.8 Boot Options .................................................................................... 72
3.8.1 Optical Drive Boot ................................................................. 72
3.8.2 Network Boot ........................................................................ 72
3.8.3 Booting Without Attached Devices ........................................... 72
3.8.4 Changing the Default Boot Device During POST ......................... 72
3.9 Adjusting Boot Speed ........................................................................ 73
3.9.1 Peripheral Selection and Configuration ..................................... 73
3.9.2 BIOS Boot Optimizations ........................................................ 73
3.10 BIOS Security Features ..................................................................... 74
3.11 BIOS Performance Features ............................................................... 75
4 Error Messages and Beep Codes
4.1 Speaker .......................................................................................... 77
4.2 BIOS Beep Codes ............................................................................. 77
4.3 Front-panel Power LED Blink Codes ..................................................... 78
4.4 BIOS Error Messages
........................................................................ 78
4.5 Port 80h POST Codes ........................................................................ 79