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
3.10BIOS Security Features
.................................................................... 70
3.11BIOS 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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