INT 15 - Compaq SLT/286 - ENTER STANDBY
AX = 4280h
Return: AH = 42h
CF clear if successful
CF set if unable to enter standby
SeeAlso: AX=5307h/BX=0001h/CX=0001h

See also: 154600

154280 - Compaq SLT/286 - ENTER STANDBY