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

   AH = 10h
   CL = 02h
   AL = channel number

Return: AL = status (00h-03h,0Ah,0Ch) (see #3622)

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

See Also: AH=10h/CL=03h,AH=10h/CL=06h,AH=10h/CL=08h