Int 2F Fn 9201  U - Pc Tools V8.0 Drivemap - Check If Mapped Drive         [R]

   AX = 9201h
   DL = drive number (01h = A:, etc.)

Return: AL = 92h if mapped drive
   AH may be destroyed (v8.0 DRIVEMAP returns AX=0000h if not mapped)

See Also: AX=9204h,AX=920Bh