Int 15 Fn 42  - System - Request Power Off (convertible,hp 95lx)           [B]

   AH = 42h
   AL = suspend type
       00h to use system profile
       01h to force suspend regardless of system profile

Note:  the HP 95LX apparently suspends regardless of the value in AL; on
     power-up, execution will resume following the instruction calling
     this function

See Also: AH=44h