Int 15 Fn 4E  - HP 95lx - Enable/disable Light Sleep                       [b]

   AH = 4Eh
   AL = light sleep
       00h disabled
       01h enabled

Note:  when light sleep is disabled, the system will continue running at full
     speed; when enabled, it may automatically slow to conserve batteries

See Also: INT 06"HP 95LX",INT 60/DI=0100h