Int 7F Fn 10  - Alloy Ntnx, Mw386 - Channel Control - Lock All Open Chann  [N]

   AH = 10h
   CL = 06h

Return: AL = status (00h-03h) (see AH=10h/CL=00h)

Note:  may not be invoked from within a hardware interrupt handler

See Also: AH=10h/CL=02h,AH=10h/CL=08h