Int E0  - Real/32 - "a_timeout" - Set Aux Device Timeout                   [O]

   CL = BAh
   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=B9h