Int 15 Fn 4001 - Compaq Slt/286 Or Portable 386 - Set Lcd/plasma Timeout [V] AX = 4001h CL = timeout in minutes, 00h to disable Return: AL = status 00h timeout modified 01h timeout cannot be modified 40h timeout cannot be modified CL = timeout in minutes, 00h if disabled See Also: AX=4000h,AX=4601h