INT 6F - 10NET - LOCK SEMAPHORE, RETURN IMMEDIATELY AH = 0Bh AL = drive number or 0 ES:SI = Ethernet address or 0 DS:BX -> 31-byte ASCIZ semaphore name Return: AL = status (see #03767) Note: same as INT 60/AH=12h SeeAlso: AH=0Ch"10NET",INT 60/AH=12h