Int 7F Fn 42  - Alloy Mw386 - Unlock Semaphore For User                    [N]

   AH = 42h
   AL = user ID
   DS:DX -> ASCIZ semaphore name

Return: AL = status
       00h successful
       01h invalid function
       03h unable to unlock semaphore

See Also: AH=02h,AH=41h"MW386",AH=42h"NTNX"