Intel Desktop Board DX79TO Technical Product Specification
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2 Technical Reference
2.1 Memory Resources ........................................................................... 41
2.1.1 Addressable Memory ............................................................. 41
2.1.2 Memory Map ......................................................................... 43
2.2 Connectors and Headers .................................................................... 43
2.2.1 Back Panel Connectors ........................................................... 44
2.2.2 Component-side Connectors and Headers................................. 46
2.3 Jumper Block ................................................................................... 55
2.4 Mechanical Considerations ................................................................. 57
2.4.1 Form Factor .......................................................................... 57
2.5 Electrical Considerations .................................................................... 58
2.5.1 Power Supply Considerations .................................................. 58
2.5.2 Fan Header Current Capability ................................................ 59
2.5.3 Add-in Board Considerations ................................................... 59
2.6 Thermal Considerations ..................................................................... 60
2.7 Reliability......................................................................................... 62
2.8 Environmental .................................................................................. 62
3 Overview of BIOS Features
3.1 Introduction ..................................................................................... 63
3.2 BIOS Flash Memory Organization ........................................................ 64
3.3 Resource Configuration ..................................................................... 64
3.3.1 PCI Autoconfiguration ............................................................ 64
3.4 System Management BIOS (SMBIOS) ................................................. 65
3.5 Legacy USB Support ......................................................................... 65
3.6 BIOS Updates .................................................................................. 66
3.6.1 Language Support ................................................................. 66
3.6.2 Custom Splash Screen ........................................................... 67
3.7 BIOS Recovery ................................................................................. 67
3.8 Boot Options .................................................................................... 68
3.8.1 Optical Drive Boot ................................................................. 68
3.8.2 Network Boot ........................................................................ 68
3.8.3 Booting Without Attached Devices ........................................... 68
3.8.4 Changing the Default Boot Device During POST ......................... 68
3.9 Adjusting Boot Speed ........................................................................ 69
3.9.1 Peripheral Selection and Configuration ..................................... 69
3.9.2 BIOS Boot Optimizations ........................................................ 69
3.10 BIOS Security Features ..................................................................... 70
3.11 BIOS Performance Features ............................................................... 71
4 Error Messages and Beep Codes
4.1 Speaker .......................................................................................... 73
4.2 BIOS Beep Codes ............................................................................. 73
4.3 Front-panel Power LED Blink Codes ..................................................... 74
4.4 BIOS Error Messages
........................................................................ 74
4.5 Port 80h POST Codes ........................................................................ 75
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