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AMI New Color BIOS after 2/1/91 BIOS POST Codes

  • 00 - Going to Give Control to INT 19H Boot Loader
  • 01 - Processor Register Test About to Start, and NMI to be Disabled
  • 02 - Power On Delay Starting
  • 03 - Any Initialization Before Keyboard BAT is in Progress
  • 04 - Reading Keyboard SYS Bit, to Check Soft Reset/Power On
  • 05 - Going to Enable ROM. i.e. Disable Shadow RAM/Cache if Any
  • 06 - Calculating ROM BIOS Checksum
  • 07 - Going to Issue the BAT Command to Keyboard Controller
  • 08 - Going to Verify the BAT Command
  • 09 - Keyboard Command Byte to be Written Next
  • 0A - Going to Write Command Byte Data
  • 0B - Going to Issue Pin-23,24 Blocking/Unblocking Command
  • 0C - NOP Command of Keyboard Controller to be Issued Next
  • 0D - CMOS Shutdown Register Test to be Done Next
  • 0E - Going to Calculate CMOS Checksum, and Update DIAG Byte
  • 0F - CMOS Initialization to begin (If \"INIT CMOS IN EVERY BOOT IS SET\")
  • 10 - CMOS Status Register About to Init for Date and Time
  • 11 - Going to Disable DMA and Interrupt Controllers
  • 12 - About to Disable Video Display and Init Port-B
  • 13 - Chipset Init/Auto Memory Detection About to begin
  • 14 - 8254 Timer Test About to Start
  • 15 - 8254 CH-2 Timer Test to be Completed
  • 16 - 8254 CH-1 Timer Test to be Completed
  • 17 - 8254 CH-0 Timer Test to be Completed
  • 18 - About to Start Memory Refresh
  • 19 - Memory Refresh Test to be Done Next
  • 1A - Going to Check 15 Micro Second On/Off Time
  • 1B - Base 64K Memory Test About to Start
  • 20 - Address Line Test to be Done Next
  • 21 - Going to do toggle Parity
  • 22 - Going for Sequential Data R/W Test
  • 23 - Any Setup Before Interrupt Vector Init About to Start
  • 24 - Interrupt Vector Initialization About to begin
  • 25 - Going to Read I/O Port of 8042 for Turbo Switch (if any)
  • 26 - Going to Initialize Global Data for Turbo Switch
  • 27 - Any Initialization After Interrupt Vector to be Done Next
  • 28 - Going for Monochrome Mode Setting
  • 29 - Going for Color Mode Setting
  • 2A - About to go For toggle Parity Before Optional ROM Check
  • 2B - About to do any Setup Required Before Optional Video ROM Check
  • 2C - About to Look for Optional Video ROM and Give Control
  • 2D - About to do any Processing after Video ROM Returns Control
  • 2E - If EGA/VGA Not Found, Then do Display Memory R/W Test
  • 2F - Display Memory R/W Test About to begin
  • 30 - About to Look for the Retrace Checking
  • 31 - About to do Alternate Display Memory R/W Test
  • 32 - About to Look for the Alternate Display Retrace Checking
  • 33 - Verification of Display Type with Switch Setting and Actual Card to begin
  • 34 - Display Mode to be Set Next
  • 35 - BIOS ROM Data Area About to be Checked
  • 36 - Going to Set Cursor for Power On Message
  • 37 - Going to Display the Power On Message
  • 38 - Going to Read New Cursor Position
  • 39 - Going to Display the Reference String
  • 3A - Going to Display the Hit <ESC> Message
  • 3B - Virtual Mode Memory Test About to Start
  • 40 - Going to Verify from Video Memory
  • 41 - Going to Prepare the Descriptor Tables
  • 42 - Going to Enter in Virtual Mode for Memory Test
  • 43 - Going to Enable Interrupts for Diagnostics Mode
  • 44 - Going to Initialize Data to Check Memory Remap at 0:0
  • 45 - Check for Memory Remap at 0:0 and Find the total System Memory Size
  • 46 - About to go For Writing Patterns to Test Memory
  • 47 - Going to Write Patterns in Base 640K Memory
  • 48 - Going to Find Out Amount of Memory Below 1M Memory
  • 49 - Going to Find Out Amount of Memory Above 1M Memory
  • 4A - Going for BIOS ROM Data Area Check
  • 4B - Going to Check <ESC> and to Clear Memory Below 1M for Soft Reset
  • 4C - Going to Clear Memory Above 1M
  • 4D - Going to Save the Memory Size
  • 4E - About to Display the First 64K Memory Test
  • 4F - Going for Sequential and Random Memory Test
  • 50 - Going to Adjust Memory Size for Relocation/Shadow
  • 51 - Memory Test Above 1M to Follow
  • 52 - Going to Prepare to go Back to Real Mode
  • 53 - Going to Enter in Real Mode
  • 54 - Going to Restore Registers Saved During Preparation for Shutdown
  • 55 - Going to Disable Gate A20 Address Line
  • 56 - BIOS ROM Data Area About to be Checked
  • 57 - BIOS ROM Data Area Check to be Completed
  • 58 - Going to Clear Hit <ESC> Message
  • 59 - About to Start DMA and Interrupt Controller Test
  • 60 - About to Verify from Display Memory
  • 61 - About to go For DMA #1 Base Register Test
  • 62 - About to go For DMA #2 Base Register Test
  • 63 - About to go For BIOS ROM Data Area Check
  • 64 - BIOS ROM Data Area Check to be Completed
  • 65 - About to Program DMA Unit 1 and 2
  • 66 - 8259 Interrupt Controller Initialization
  • 67 - About to Start Keyboard Test
  • 80 - About to Issue Keyboard Reset Command
  • 81 - About to Issue Keyboard Controller Interface Test Command
  • 82 - About to Write Command Byte and Init Circular Buffer
  • 83 - About to Check for Lock Key
  • 84 - About to Check for Memory Size Mismatch with CMOS
  • 85 - About to Display Soft Error and Check for Password or Bypass Setup
  • 86 - About to do Programming Before Setup
  • 87 - Going to CMOS Setup Program
  • 88 - About to do Programming After Setup
  • 89 - Going to Display Power On Screen Message
  • 8A - About to Display <WAIT...> Message, Mouse Check and Initialization Next
  • 8B - About to do Main and Video BIOS Shadow
  • 8C - Setup Options Programming After CMOS Setup About to Start
  • 8D - Going for Hard Disk, Floppy Reset
  • 8E - About to go For Floppy Check
  • 8F - Floppy Setup to Follow
  • 90 - Test for Hard Disk Presence to be Done
  • 91 - Hard Disk Setup to Follow
  • 92 - About to go For BIOS ROM Data Area Check
  • 93 - BIOS ROM Data Area Check to be Completed
  • 94 - Going to Set Base and Extended Memory Size
  • 95 - Going to Verify From Display Memory
  • 96 - Going to do Any Init Before C800 Optional ROM Control
  • 97 - Optional ROM Check and Control Will Be Done Next
  • 98 - Give Control to Required Processing After Optional ROM Returns Control
  • 99 - Going to Setup Timer Data Area and Printer Base Address
  • 9A - Going to Set the RS-232 Base Address
  • 9B - Going to do Any Initializtion Before Co-Processor Test
  • 9C - Going to Initialize the Coprocessor Next
  • 9D - Going to do Any Initialization After Co-Processor Test
  • 9E - Going to Check Extd Keyboard, Keyboard ID and Num-Lock
  • 9F - Keyboard ID Command to be Issued
  • A0 - Keyboard ID Flag to be Reset
  • A1 - Cache Memory Test to Follow
  • A2 - Going to Display Any Soft Errors
  • A3 - Going to Set the Keyboard Typematic Rate
  • A4 - Going to Program Memory Wait States
  • A5 - Screen to be Cleared Next
  • A6 - Going to Enable Parity and NMI
  • A7 - Do Initialization Required Before Giving Control to Optional ROM at E000
  • A8 - E000 ROM to Get Control Next
  • A9 - Going to do Any Initialization Required After E000 Optional ROM Control
  • AA - Going to Display the System Configuration
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