INT 10 - Cirrus Logic BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. v3.02 - LCD(Liquid Crystal Display) panel - EN/DISABLE REVERSE VIDEO MODE
	AH = 12h
	BL = 89h
	AL = new state (00h enabled, 01h disabled)
Return: nothing
SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Ah,AH=12h/BL=8Bh