INT 2F C - Novell NetWare - DOS Requester - BROADCAST CALLBACK                  
	AX = 7A21h
	CX = server connection (FFFFh if message from Personal NetWare user)
	interrupts disabled
Return: CX = 0000h if broadcast handled
	interrupts disabled
Note:	this function is only linked into INT 2F when INT 21/AH=DEh/DL=05h
	  has been issued
SeeAlso: AX=7A22h,AX=7A85h,INT 21/AH=DEh