Int E0  - Real/32 - "l_timeout" - Set List Device Timeout                  [O]

   CL = B9h
   DX = timeout value in system ticks (see #3780)
       0000h-FFEFh = new number of system ticks
       FFFDh = get current value without changing
       FFFEh = start timeout count
       FFFFh = never timeout

Return: AX = status, or current timeout value if DX=FFFDh on entry
   may destroy SI,DI

See Also: INT E0/CL=BAh