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Bitfields for IBM/MS INT 13 Extensions API support bitmap

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Bit Description

0

extended disk access functions (AH=42h-44h,47h,48h) supported

1

removable drive controller functions (AH=45h,46h,48h,49h,INT 15/AH=52h) supported

2

enhanced disk drive (EDD) functions (AH=48h,AH=4Eh), supported extended drive parameter table is valid (see #00273,#00278)

3 - 15

reserved (0)