Int 15H [PS/2] Function 21H (33) Subfunction 01H Write POST error log

Adds an entry to the power-on self-test (POST) error log.

Call with:

AH = 21H

AL = 01H

BH = device identifier

BL = device error code

Returns:

If function successful

Carry flag = clear

AH = 00H

If function unsuccessful

Carry flag = set

AH = status

01H = error list full

80H = invalid command

86H = function not supported

Note:

This function is not available on the PS/2 Models 25 and 30.