INT 21 - Novell NetWare - EXAMINE SEMAPHORE                                     
	AX = F26Fh subfn 04h
	CX = length of request buffer in bytes
	DX = length of reply buffer in bytes
	DS:SI -> request buffer (see #02486)
	ES:DI -> reply buffer (see #02487)
Return: AX = status (see #02860 at INT 2F/AX=7A20h/BX=0000h)
SeeAlso: AH=F2h"Novell",AX=F26Fh/SF=02h,AX=F26Fh/SF=03h


Format of NetWare "Examine Semaphore" request packet:
Offset	Size	Description	(Table 02486)
 00h	BYTE	04h (subfunction "Examine Semaphore")
 01h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	semaphore handle
SeeAlso: #02487


Format of NetWare "Examine Semaphore" reply packet:
Offset	Size	Description	(Table 02487)
 00h	BYTE	semaphore's current value
 01h	BYTE	number of clients using semaphore
SeeAlso: #02486