Int 7F Fn 30  - Alloy Mw386 - Get Port Information                         [N]

   AH = 30h
   CX = MW386 port number

Return: AL = FFh if port not found
      else  driver unit number
          BL = port mode
          BH = port type
          02h remote
          DH = owner's machine ID
          DL = owner's user ID

See Also: INT 17/AH=8Bh