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2F5602

Category: remote control/file access

INT 2F - 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)
SeeAlso: AX=5600h

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