Int 10 Fn 12 - Cirrus Logic BIOS V3.02 - Lcd Panel - Switch Display [V] AH = 12h BL = 92h AL = new display (00h LCD, 01h external monitor) Note: the deselected display is disabled See Also: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=90h,AH=12h/BL=94h