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AH = 83h DX = port number AL = subfunction 00h flush input buffer 01h flush output buffer 02h flush both buffers
Return:
AH bit 7 set on error AH bit 7 clear if successful
See Also: AH=81h"COMM-DRV" - AH=84h"COMM-DRV"
Category: Serial I/O - Int 14h - C
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