Intel AN430TX Motherboard BIOS Post Codes
- 02 - Verify Real Mode
- 03 - Disable Non-Maskable Interrupt (NMI)
- 04 - Get CPU type
- 06 - Initialize system hardware
- 08 - Initialize chipset with initial POST values
- 09 - Set IN POST flag
- 0A - Initialize CPU registers
- 0B - Enable CPU cache
- 0C - Initialize caches to initial POST values
- 0E - Initialize I/O component
- 0F - Initialize the local bus IDE
- 10 - Initialize Power Management
- 11 - Load alternate registers with initial POST values
- 12 - Restore CPU control word during warm boot
- 13 - Initialize PCI Bus Mastering devices
- 14 - Initialize keyboard controller
- 16 - BIOS ROM checksum
- 17 - Initialize cache before memory autosize
- 18 - 8254 timer initialization
- 1A - 8237 DMA controller initialization
- 1C - Reset Programmable Interrupt Controller
- 20 - Test DRAM refresh
- 22 - Test 8742 Keyboard Controller
- 24 - Set ES segment register to 4 GB
- 26 - Enable A20 line
- 28 - Autosize DRAM
- 29 - Initialize POST Memory Manager
- 2A - Clear 512 KB base RAM
- 2C - RAM failure on address line xxxx*
- 2E - RAM failure on data bits xxxx* of low byte of memory bus
- 2F - Enable cache before system BIOS shadow
- 30 - RAM failure on data bits xxxx* of high byte of memory bus
- 32 - Test CPU bus-clock frequency
- 33 - Initialize POST Dispatch Manager
- 34 - Test CMOS RAM
- 35 - Initialize alternate chipset registers
- 36 - Warm start shut down
- 37 - Reinitialize the chipset (MB only)
- 38 - Shadow system BIOS ROM
- 39 - Reinitialize the cache (MB only)
- 3A - Autosize cache
- 3C - Configure advanced chipset registers
- 3D - Load alternate registers with CMOS values
- 40 - Set Initial CPU speed new
- 42 - Initialize interrupt vectors
- 44 - Initialize BIOS interrupts
- 45 - POST device initialization
- 46 - Check ROM copyright notice
- 47 - Initialize manager for PCI Option ROMs (Rel. 5.1 and earlier)
- 48 - Check video configuration against CMOS
- 49 - Initialize PCI bus and devices
- 4A - Initialize all video adapters in system
- 4B - Display QuietBoot screen
- 4C - Shadow video BIOS ROM
- 4E - Display BIOS copyright notice
- 50 - Display CPU type and speed
- 51 - Initialize EISA board
- 52 - Test keyboard
- 54 - Set key click if enabled
- 56 - Enable keyboard
- 58 - Test for unexpected interrupts
- 59 - Initialize POST display service
- 5A - Display prompt Press F2 to enter SETUP
- 5B - Disable CPU cache
- 5C - Test RAM between 512 and 640 KB
- 60 - Test extended memory
- 62 - Test extended memory address lines
- 64 - Jump to UserPatch1
- 66 - Configure advanced cache registers
- 67 - Initialize Multi Processor APIC
- 68 - Enable external and CPU caches
- 69 - Setup System Management Mode (SMM) area
- 6A - Display external L2 cache size
- 6C - Display shadow-area message
- 6E - Display possible high address for UMB recovery
- 70 - Display error messages
- 72 - Check for configuration errors
- 74 - Test real-time clock
- 76 - Check for keyboard errors
- 7A - Test for key lock on
- 7C - Set up hardware interrupt vectors
- 7E - Initialize coprocessor if present
- 80 - Disable onboard Super I/O ports and IRQs
- 81 - Late POST device initialization
- 82 - Detect and install external RS232 ports
- 83 - Configure non-MCD IDE controllers
- 84 - Detect and install external parallel ports
- 85 - Initialize PC-compatible PnP ISA devices
- 86 - Re-initialize onboard I/O ports
- 87 - Configure Motherboard Configurable Devices
- 88 - Initialize BIOS Data Area
- 89 - Enable Non-Maskable Interrupts (NMIs)
- 8A - Initialize Extended BIOS Data Area
- 8B - Test and initialize PS/2 mouse
- 8C - Initialize floppy controller
- 8F - Determine number of ATA drives
- 90 - Initialize hard-disk controllers
- 91 - Initialize local-bus hard-disk controllers
- 92 - Jump to UserPatch2
- 93 - Build MPTABLE for multi-processor boards
- 94 - Disable A20 address line (Rel. 5.1 and earlier)
- 95 - Install CD-ROM for boot
- 96 - Clear huge ES segment register
- 97 - Fixup Multi Processor table
- 98 - Search for option ROMs. One long, two short beeps on checksum failure
- 99 - Check for SMART Drive
- 9A - Shadow option ROMs
- 9C - Set up Power Management
- 9E - Enable hardware interrupts
- 9F - Determine number of ATA and SCSI drives
- A0 - Set time of day
- A2 - Check key lock
- A4 - Initialize typematic rate
- A8 - Erase F2 prompt
- AA - Scan for F2 key stroke
- AC - Enter SETUP
- AE - Clear IN POST flag
- B0 - Check for errors
- B2 - POST done - prepare to boot operating system
- B4 - One short beep before boot
- B5 - Terminate QuietBoot
- B6 - Check password (optional)
- B8 - Clear global descriptor table
- B9 - Clean up all graphics
- BA - Initialize DMI parameters
- BB - Initialize PnP Option ROMs
- BC - Clear parity checkers
- BD - Display MultiBoot menu
- BE - Clear screen (optional)
- BF - Check virus and backup reminders
- C0 - Try to boot with INT 19
- C1 - Initialize POST Error Manager (PEM)
- C2 - Initialize error logging
- C3 - Initialize error display function
- C4 - Initialize system error handler
- E0 - Initialize the chipset
- E1 - Initialize the bridge
- E2 - Initialize the CPU
- E3 - Initialize system timer
- E4 - Initialize system I/O
- E5 - Check force recovery boot
- E6 - Checksum BIOS ROM
- E7 - Go to BIOS
- E8 - Set Huge Segment
- E9 - Initialize Multi Processor
- EA - Initialize OEM special code
- EB - Initialize PIC and DMA
- EC - Initialize Memory type
- ED - Initialize Memory size
- EE - Shadow Boot Block
- EF - System memory test
- F0 - Initialize interrupt vectors
- F1 - Initialize Run Time Clock
- F2 - Initialize video
- F3 - Initialize beeper
- F4 - Initialize boot
- F5 - Clear Huge segment
- F6 - Boot to Mini DOS
- F7 - Boot to Full DOS