Int 7F Fn 10  - Alloy Ntnx, Mw386 - Channel Control - Close All Channels   [N]

   AH = 10h
   CL = 05h

Return: AL = status (00h-03h) (see #3622)

Notes: clears all pending datagrams and clears buffer pointers before closing
     the channels
   may not be invoked from within a hardware interrupt handler

See Also: AH=10h/CL=01h