INT 67 - PC-NET, Alloy NTNX - LOCK SEMAPHORE AND WAIT                           
	AH = 00h
	DS:DX -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. semaphore name (max 64 bytes)
Return: AL = status (see #03522)
	AH = semaphore owner if status=02h
SeeAlso: AH=01h,AH=02h"PC-NET",INT 7F/AH=00h


(Table 03522)
Values for PC-NET semaphore function status:
 00h	successful
 01h	invalid function
 02h	semaphore already locked
 03h	unable to lock semaphore
 04h	semaphore space exhausted