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. - GET INSTALLED MEMORY
	AH = 12h
	BL = 85h
Return: AL = number of 64K banks of video memory
SeeAlso: AH=12h/BL=80h,AH=12h/BL=93h