Int 2F/AX=5602h

INTERLNK - CHECK IF PORT IN USE

AX = 5602h
DX = magic value FFFFh
BL = instance number (00h=any, 01h=first loaded, etc.)
CX = base port address of COM / LPT port to check

Return:
(as for AL=00h if port in use for a redirected drive)

See Also: AX=5600h

Category: Remote Control/File Access - Int 2Fh - I

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