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AH = A0h AL = function 00h get loadable-ABIOS signatureReturn:
BL = signature value 00h loadable-ABIOS prompting not required A1h loadable-ABIOS prompting is required 01h write loadable-ABIOS signature BL = new signature value 00h loadable-ABIOS prompting not required A1h loadable-ABIOS prompting is required
Return:
CF clear if successful CF set on error AH = status 00h successful 01h invalid subfunction 02h unable to read/write signature 86h function not supported
Note: IBM classifies this function as optional
See Also: AH=08h"IBM"
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