INT 7F - Alloy NTNX, MW386 - RELEASE NORMAL SEMAPHORES FOR USER
AH = B1h subfn 00h
AL = (bits 7-5) 000
(bits 4-0) user ID
Note: MW386 ignores AL; it releases all semaphores locked using INT 67 or
INT 7F locking functions
SeeAlso: AH=B0h,AH=B2h,AH=B3h,AH=B4h