INT 7F - Alloy NTNX, MW386 - CHANNEL CONTROL - CLOSE ALL CHANNELS               
	AH = 10h
	CL = 05h
Return: AL = status (00h-03h) (see #03951)
Notes:	clears all pending datagrams and clears buffer pointers before closing
	  the channels
	may not be invoked from within a hardware interrupt handler
SeeAlso: AH=10h/CL=01h