Int 10 Fn 12  - Cirrus Logic Bios V3.02 - Lcd Panel - En/disable Reverse   [V]

   AH = 12h
   BL = 89h
   AL = new state (00h enabled, 01h disabled)

Return: nothing

See Also: AH=12h/BL=84h,AH=12h/BL=8Ah,AH=12h/BL=8Bh