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BIOS Post Codes:


BIOS PostCodes:

 

  • SuperSoft PC/XT/AT BIOS Post Codes:

     

    XT BIOS

    11 CPU register or logic error
    12 ROM POST checksum error
    13 8253 programmable interrupt timer channel 0 error
    14 8253 programmable interrupt timer channel 1 error
    15 8253 programmable interrupt timer channel 2 error
    16 8237A DMA controller error
    17 8255 parity error detected
    18 16K RAM critical region error
    19 Memory refresh error
    1A -
    21 8259 interrupt controller error
    22 Unexpected interrupt detected
    23 Interrupt 0 (timer) error
    24 Nonmaskable interrupt error
    25 MDA video memory error
    26 CGA video memory error
    27 EGA/VGA memory error
    28 8087 math coprocessor error
    29 Keyboard controller error
    2A -
    31 Keyboard scan lines/stuck key
    32 Floppy controller error
    33 Floppy disk read error
    34 Memory error at address x
    35 Slow refresh, address x
    36/37 -
    38 -
    41 BIOS ROM checksum error
    42 BASIC ROM 1 checksum error
    43-45 Basic ROM 2,3,4 checksum error

     

     

    AT BIOS

    11 CPU register or logic error
    12 ROM POST A checksum error
    13 ROM B POST checksum error
    14 8254 programmable interrupt timer channel 0 error
    15 8254 programmable interrupt timer channel 1 error
    16 8254 programmable interrupt timer channel 2 error
    17 8237A DMA controller 1 error
    18 8237A DMA controller 2 error
    19 DMA page registers error
    1A 8042 parity error detected
    21 16K RAM critical region error
    22 Memory refresh error
    23 CPU protected mode error
    24 8259 programmable interrupt controller 1 error
    25 8259 programmable interrupt controller 2 error
    26 Unexpected interrupt detected
    27 Interrupt 0 (timer) error
    28 CMOS real time clock error
    29 Nonmaskable interrupt error
    2A 8087 math coprocessor error
    31 Keyboard controller error
    32 Stuck key or CMOS RAM error
    33 Floppy controller error
    34 Floppy disk read error
    35 MDA video memory error
    36/37 CGA, EGA/VGA RAM error
    38 BIOS ROM checksum error
    41 Memory error at address x
    42 Slow refresh, address x
    43-45 Display pass count
    59 No monitor


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