Int 6F Fn 0C  - 10net - Unlock Semaphore                                   [N]

   AH = 0Ch
   AL = drive number or 0
   ES:SI = Ethernet address or 0
   DS:BX -> 31-byte ASCIZ semaphore name

Return: AL = status (see also AH=0Bh)
       01h semaphore not locked

Note:  same as INT 60/AH=13h

See Also: AH=0Bh,INT 60/AH=13h