Abit AN9 32X manual Onboard Status Display, Post Code Displayer

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2.7 Onboard Status Display

2.7.1 POST Code Displayer

This is an LED device to display the “POST” Code, the acronym of Power On Self Test. The computer will execute the POST action whenever you power on the computer. The POST process is controlled by the BIOS. It is used to detect the status of the computer’s main components and peripherals. Each POST Code corresponds to different checkpoints that are also defined by the BIOS in advance. For example, “memory presence test” is an important checkpoint and its POST Code is “C1”. When the BIOS execute any POST item, it will write the corresponding POST Code into the address 80h. If the POST passes, the BIOS will process the next POST item and write the next POST Code into the address 80h. If the POST fails, we can check the POST Code in address 80h to find out where the problem lies.

This LED device also displays the “POST” Code of AC2005, an “uGuru” chipset developed exclusively by ABIT computer.

The decimal point lights up during the AC2005 POST action.

See Appendix for both AWARD and AC2005 POST Code definitions.

Hardware Setup

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Contents Motherboard AMD Socket AM2 User’s ManualPage Contents Driver & Utility CD Appendix Fatal1ty IntroductionLIVIN’ Large CPU Features & SpecificationsFor more information Motherboard Layout For more information Choosing a Computer Chassis Installing MotherboardShort Open Checking Jumper SettingsCmos Memory Clearing Header and Backup Battery Page USB-PWR1 Wake-up HeadersATX Power Connectors Connecting Chassis ComponentsFront Panel Switches & Indicators Headers FAN Power Connectors CPU Socket AM2 Installing HardwareFor more information 2 DDR2 Memory Slots Page PCI Express X16 Add-on Slots Install Graphics Card Page For more information AudioMAX Connection Slot HD Audio AC’97 Audio MIC2 L Page Floppy and IDE Disk Drive Connectors Hardware Setup Connecting Peripheral DevicesSerial ATA Connectors Hardware Additional USB 2.0 Port HeadersAdditional IEEE1394 Port Headers PCI Express X1 Add-on Slots Hardware Setup PCI Add-on SlotsGuru Panel Connection Header Post Code Displayer Onboard Status DisplaySLIPWR1 Power Source IndicatorsConnecting I/O Devices For more information Bios Setup Abit EQ ΜGuru UtilityOC Guru Advanced Bios Features Standard Cmos FeaturesIntegrated Peripherals Advanced Chipset FeaturesPnP/PCI Configurations Power Management SetupSave & Exit Setup Load Fail-Safe DefaultsLoad Optimized Defaults Set PasswordDriver & Utility CD For more information Award Post Code Definitions Post Code DefinitionsEarly PCI Initialization Auto 2 AC2005 Post Code Definitions 1 Q & a Troubleshooting How to Get Technical Support?Page Appendix Technical Support Form RMA Center http//rma.abit-usa.com Universal Abit Contact InformationJohnathan Fatal1ty Wendel