INT 21 - Novell NetWare - OPEN SEMAPHORE (OLD) 
	AX = F220h subfn 00h
	CX = length of request buffer in bytes
	DX = length of reply buffer in bytes
	DS:SI -> request buffer (see #02280)
	ES:DI -> reply buffer (see #02281)
Return: AX = status (see #02860 at INT 2F/AX=7A20h/BX=0000h)
SeeAlso: AH=F2h"Novell",AX=C500h,AX=F220h/SF=01h,AX=F220h/SF=03h


Format of NetWare "Open Semaphore (old)" request packet:
Offset	Size	Description	(Table 02280)
 00h	BYTE	00h (subfunction "Open Semaphore (old)")
 01h	BYTE	initial value of semaphore ( >= 0)
 02h	BYTE	length of semaphore's name (max 512)
 03h  N BYTEs	semaphore name
SeeAlso: #02281,#02282


Format of NetWare "Open Semaphore (old)" reply packet:
Offset	Size	Description	(Table 02281)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	semaphore handle
 04h	BYTE	number of processes using semaphore (including caller)
SeeAlso: #02280,#02283