INT 21 - Novell NetWare - SYNCHRONIZATION SERVICES - CLOSE SEMAPHORE AX = C504h CX:DX = semaphore handle Return: AL = status 00h successful FFh invalid handle Desc: decrement the semaphore's open count, and delete the semaphore if the count reaches zero Note: this function is supported by NetWare 4.6+, Advanced NetWare 1.0+, and Alloy NTNX SeeAlso: AX=C500h"NetWare",AX=C501h,AX=F220h/SF=04h