INT 15 - HP 95LX - ENABLE/DISABLE LIGHT SLEEP
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
SeeAlso: INT 60/DI=0100h

See also: 06

154E - HP 95LX - ENABLE/DISABLE LIGHT SLEEP