
Intel Desktop Board DG965RY Technical Product Specification 
vi 
2.6 DMA Channels................................................................................. 47 
2.7 PCI Interrupt Routing Map ................................................................ 47 
2.8 Connectors and Headers................................................................... 48 
2.8.1 Back Panel Connectors .......................................................... 49 
2.8.2 Component-side Connectors and Headers ................................ 50 
2.9 Jumper Block .................................................................................. 58 
2.10 Mechanical Considerations ................................................................ 59 
2.10.1 Form Factor......................................................................... 59 
2.10.2 I/O Shield ........................................................................... 60 
2.11 Electrical Considerations................................................................... 61 
2.11.1 DC Loading.......................................................................... 61 
2.11.2 Fan Header Current Capability................................................ 61 
2.11.3 Add-in Board Considerations .................................................. 62 
2.11.4 Power Supply Considerations ................................................. 62 
2.12 Thermal Considerations.................................................................... 63 
2.13 Reliability ....................................................................................... 65 
2.14 Environmental ................................................................................ 65 
3Overview 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 
3.3.2 PCI IDE Support................................................................... 69 
3.4 System Management BIOS (SMBIOS)................................................. 69 
3.5 Legacy USB Support ........................................................................ 70 
3.6 BIOS Updates ................................................................................. 70 
3.6.1 Language Support ................................................................ 71 
3.6.2 Custom Splash Screen .......................................................... 71 
3.7 BIOS Recovery................................................................................ 71 
3.8 Boot Options................................................................................... 72 
3.8.1 CD-ROM 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 
4Error Messages and Beep Codes 
4.1 Speaker ......................................................................................... 75 
4.2 BIOS Beep Codes ............................................................................ 75 
4.3 BIOS Error Messages ....................................................................... 75 
4.4 Port 80h POST Codes ....................................................................... 76