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DOS 3.0+ internal - FLUSH BUFFER

AX = 1215h
DS:DI -> disk buffer
SS = DOS DS (must be using a DOS internal stack).
STACK:
WORD drives for which to skip buffer
ignore buffer if drive same as high byte, or bytes differ and
the buffer is for a drive OTHER than that given in low byte

Return:
STACK unchanged

Note: Can be called only from within DOS

See Also: AX=1209h

Category: DOS Kernel - Int 2Fh - D

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