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AH = 21h AL = subfunction 00h read POST log 01h write POST log BH = device ID BL = error code
Return:
CF clear if successful CF set on error AH = status 00h OK 01h list full 02h unsupported subfunction 80h invalid command 86h unsupported function if function 00h: BX = number of error codes stored ES:DI -> error log
Notes: The log is a series of words, the first byte of which identifies the error code and the second the device.. Supported by AMI PCI BIOS. IBM considers this a required BIOS function. If the device ID is FFh, the "error code" is the actual device number minus 255 (thus these devices have no specific error codes)
See Also: AH=23h"SYSTEM" - AH=24h"SYSTEM"
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