Int 10 Fn 64  - Hunter 16 - Set Backlight Level                            [V]

   AH = 64h
   AL = level (0..15)

Return: nothing
Desc:  set the LCD backlight level to improve visibility in bad lighting

See Also: AH=63h,AH=65h,AH=74h,AH=78h"HUNTER",INT 15/AH=74h