The error log consists of single-word entries. The first byte of an entry is the device error code, and the second is the device identifier.Returns error information that was accumulated during the most recent power-on self-test (POST).
Call with:
AH = 21H
AL = 00H
Returns:
If function successful
Carry flag = clear
AH = 00H
BX = number of POST error codes stored
ES:DI = segment:offset of POST error log
If function unsuccessful
Carry flag = set
AH = status
80H = invalid command
86H = function not supported
Notes:
The error log consists of single-word entries. The first byte of an entry is the device error code, and the second is the device identifier.
This function is not available on the PS/2 Models 25 and 30.