INT 21 - Novell NetWare - SYNCHRONIZATION SERVICES - SIGNAL SEMAPHORE AX = C503h CX:DX = semaphore handle Return: AL = status 00h successful 01h semaphore value overflowed FFh invalid handle Desc: increment the semaphore's value and signal the first process (if any) in the queue waiting on the semaphore Note: this function is supported by NetWare 4.6+, Advanced NetWare 1.0+, and Alloy NTNX SeeAlso: AX=C500h"NetWare",AX=C502h,AX=F220h/SF=03h