INT 15 - Compaq SLT/286 or Portable 386 - SET LCD/PLASMA TIMEOUT
AX = 4001h
CL = 00h timeout disabled
else  timeout in minutes
Return: AL = 00h timeout modified
01h timeout cannot be modified
40h timeout cannot be modified
CL = 00h timeout disabled
else timeout in minutes
SeeAlso: AX=4601h

See also: 154000

154001CL00 - Compaq SLT/286 or Portable 386 - SET LCD/PLASMA TIMEOUT