BIOS sounds



  
AMI BIOS Tone POST Codes - Fatal Errors

   TONE              CONDITION
  1 short DRAM refresh
  2 short Parity circuit
  3 short Base 64K RAM
  4 short System timer
  5 short Processor
  6 short Keyboard controller gate A20
  7 short Virtual mode exception
  8 short Display memory read/write test
  9 short ROM BIOS checksum
 10 short CMOS shutdown read/write
 11 short Cache memory

  
AMI BIOS Tone POST Codes - Non-Fatal Errors

      TONE                 CONDITION
 1 long, 3 short Conventional/extended memory
 1 long, 8 short Display/retrace test

     
Phoenix BIOS Tone POST Codes - Fatal Errors

 TONE                   CONDITION
 None  CPU register test
 None  First 64K RAM test
 None  Interrupt vector loading proceeding
 None  CMOS power failure/checksum calculation
 None  Display configuration validation proceeding
 None  Display running with video ROM
 None  Display functional
 None  Mononchrome display functional
 None  CGA display functional
 1-1-3 CMOS write/read
 1-1-4 ROM BIOS checksum
 1-2-1 Programmable interval timer
 1-2-2 DMA Initialization
 1-2-3 DMA page register write/read
 1-3-1 RAM refresh verification
 1-3-3 First 64K RAM chip or data line
 1-3-4 First 64K RAM odd/even logic
 1-4-1 Address line first 64K RAM
 1-4-2 Parity failure first 64K RAM
 2-1-1 Bit 0, first 64K RAM
 2-1-2 Bit 1, first 64K RAM
 2-1-3 Bit 2, first 64K RAM
 2-1-4 Bit 3, first 64K RAM
 2-2-1 Bit 4, first 64K RAM
 2-2-2 Bit 5, first 64K RAM
 2-2-3 Bit 6, first 64K RAM
 2-2-4 Bit 7, first 64K RAM
 2-3-1 Bit 8, first 64K RAM
 2-3-2 Bit 9, first 64K RAM
 2-3-3 Bit 10, first 64K RAM
 2-3-4 Bit 11, first 64K RAM
 2-4-1 Bit 12, first 64K RAM
 2-4-2 Bit 13, first 64K RAM
 2-4-3 Bit 14, first 64K RAM
 2-4-4 Bit 15, first 64K RAM
 3-1-1 Slave DMA register
 3-1-2 Master DMA register
 3-1-3 Master interrupt mask register
 3-1-4 Slave interrupt mask register
 3-2-4 Keyboard controller
 3-3-4 Display initialization
 3-4-1 Display retrace
 3-4-2 Search for video ROM proceeding

    
Phoenix BIOS POST Tone Codes - Non-Fatal Errors

  TONE                CONDITION
 4-2-1  Timer tick interrupt test
 4-2-2  Shutdown test
 4-2-3  Gate A20 Failure
 4-2-4  Unexpected interrupt in protected moe
 4-3-1  RAM test (address failure >FFFFh)
 4-3-3  Interval timer channel 2
 4-3-4  Real time clock
 4-4-1  Serial Port
 4-4-2  Parallel Port
 4-4-3  Math Co-processor test
 1-1-2* System board select
 1-1-3* Extender CMOS RAM
*audio code pattern preceded by low pitched tone

             
IBM POST Tone Codes

      TONE                CONDITION
 NONE            System board, power supply
 1 short         System passed all tests
 2 short         Display error
 continuous      System board, power supply
 1 long, 1 short System board
 1 long, 2 short Video adapter
 1 long, 3 short EGA
 3 long          3270 keyboard card

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