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Home · Forums · Chat · About Us · Awards BIOS PostCodes: Acer BIOS Post Codes ALR BIOS Post Codes AMIT/AMI BIOS Post Codes Arche Legacy BIOS Post Codes AST BIOS Post Codes AT&T BIOS Post Codes Award BIOS Post Codes Chips & Technologies BIOS Post Codes Compaq BIOS Post Codes Dell BIOS Post Codes DTK BIOS Post Codes Eurosoft/Mylex BIOS Post Codes Faraday A-Tease BIOS Post Codes HP BIOS Post Codes IBM BIOS Post Codes Landmark BIOS Post Codes Microid Research/Mr BIOS Post Codes NCR BIOS Post Codes Olivetti BIOS Post Codes Phillips BIOS Post Codes Phoenix BIOS Post Codes Quadtel BIOS Post Codes Supersoft BIOS Post Codes Tandon BIOS Post Codes Zenith BIOS Post Codes Intel Motherboards: CA810E CC820 SE440BX-2 D810E2CB D810EMO D815BN D815EEA D815EPEA D820LP SE440BX SR440BX JN440BX LB440GX/L440GX N440BX/NA440BX OR840 T440BX RC440BX VC820 Arche Legacy BIOS Post Codes: Derives from AMI BIOS and uses port 80h. Certain codes come up if a copy is made without AMI's copyright notice. 01 Disable the NMI and test CPU registers 02 Verify the BIOS ROM checksum (32KB at F8000h) 03 Initialize the keyboard controller and CMOS RAM communication 04 Disable the DMA and PIT; test the CMOS RAM interrupt 05 Reset the video controller 06 Test the 8254 programmable interrupt timer 07 Test delta count timer channel 2 (speaker) 08 Test delta count timer channel 1 (memory refresh) 09 Test delta count timer channel 0 (system timer) 0A Test parity circuit and turn on refresh 0B Enable parity check and test system timer 0C Test refresh trace link toggle 0D Test refresh timing synchronization 10 Disable cache and shadow memory; test the 64KB base memory 11 Perform 64KB memory read/write test 12 Initialize interrupt vector table in lower 1KB of RAM 14 Test CMOS RAM shutdown register...disable DMA and interrupt controllers 15 Test CMOS RAM battery and checksum 16 Test for floppy drive, based on CMOS setup...initialize monochrome video 17 Initialize CGA video 18 Clear the parity status (if any) 19 Test for EGA/VGA video BIOS at C0000h and pass control 1A Return from video ROM 1B Test primary video adapter...test video memory 1C Test secondary video adapter...test video memory 1D Compare CMOS settings to video adapter 1E Set video mode according to CMOS settings 20 Display CMOS RAM read/write errors and halt 21 Set cursor and call interrupt 10 to display status message 22 Display power on message; "386 BIOS"; check if CPU speed is 25Mhz or 33Mhz 23 Read new cursor position 24 Display AMI copyright message at the bottom of the screen 25 Test shadow RAM F0 Shadow RAM test failed 30 Ready to enter protected mode 31 Enter protected mode (A20 gate) and enable timer interrupt (IRQ 0) 32 Get memory size above 1MB 33 Get memory size below 640KB 34 Test memory above 1MB 35 Test memory below 1MB 37 Clear memory below 1MB 38 Clear memory above 1MB 39 Use CMOS shutdown byte and return to real mode 3A Test 64KB read/write 3B Test RAM below 1MB and show the area being tested 3C Test RAM above 1MB and show the area being tested 3D RAM test complete OK 3E Ready to return to real mode 3F Back in real mode 40 Disable A20 gate 41 Check for AMI copyright message in ROM 42 Display the AMI copyright message, if found 43 Test cache memory; Clear <Esc> message 4E Process shutdown 1; Return to real mode 4F Restore interrupt vectors and data in BIOS RAM area 50 Test DMA controller 51 Initialize DMA controller 52 Test the DMA controller with patterns 54 Test DMA controller latches 55 Initialize and enable DMA controllers 1 and 2 56 Initialize 8259 programmable interrupt controllers 57 Test 8259 programmable interrupt controllers and setup interrupt mask registers 61 Check DDNIL status bit and display message 70 Perform keyboard (BAT) basic assurance test 71 Program keyboard to AT type 72 Disable keyboard and initialize keyboard circular buffer 73 Display message and initialize floppy controller and drive 74 Attempt to access the floppy drive 75 If the CMOS RAM is good, check and initialize the hard disk controller and drive 76 Attempt to access the hard disk drive 77 Shuffle and internal error codes 79 Check CMOS RAM battery and checksum...clear parity status 7A Compare size of base/extended memory to CMOS information 7B Unknown AMI function 7C Display AMI copyright 7D Set AT memory expansion bit 7E Verify the ROM contains and AMI copyright 7F Clear the <Del> message from the display...check if <Del> was pressed 80 Locate option ROM at C800h to DE00h and pass control to any found 81 Return from option ROM and initialize timer and data area 82 Setup parallel and serial ports 83 Test for math coprocessor 84 Check if keyboard is locked 85 Display any soft error messages 86 Test for option ROM at E0000h A0 Error found in 256KB or 1MB RAM IC in lower 640KB A1 Base 64KB random access and data pattern test (only in 386APR and Presto 386SX BIOS) A9 Initialize on board VGA controller (Presto 386SX BIOS) B0 Error in 256KB RAM IC in 640KB B1 Base 64KB random access and data pattern test (only in Presto 386SX BIOS) E0 Return to real mode and initialize base 64KB RAM (Presto) E1 Initialize 640KB RAM (Presto) EF Configuration memory error - can't find memory F0 Test shadow RAM from 04000h 00 Call the interrupt 19 boot loader BIOS Beep Codes: AMI BIOS Beep Codes AST BIOS Beep Codes Award BIOS Beep Codes Compaq BIOS Beep Codes IBM BIOS Beep Codes Mylex BIOS Beep Codes Phoenix BIOS Beep Codes Quadtel BIOS Beep Codes System Specific Diagnostic and POST Error Messages: IBM Diagnostic Error Codes Compaq Desktop Systems Diagnostic and POST Errors BIOS Related Pages: Bios Data Area BiosCentral Forums BIOS Basics BIOS and Computer Links BIOS Int 13 Error Codes BIOS Services CMOS Memory Map Debug Routines Interrupts My Other Pages: Images My Systems Site Comments Utility DownloadsBest viewed at 1024x768x16 |