INT 10 - Cirrus Logic BIOS - SET MONITOR TYPE

	AH = 12h
	BL = A4h
	AL = options 1
	    bits 7-4 = vertical refresh at 640x480
		(0 = 60Hz, 1 = 72Hz, other reserved)
	    bits 3-0 = maximum vertical resolution
		(0 = 480 scanlines, 1 = 600, 2 = 768, 3 = 1024, other reserved)
	BH = options 2
	    bits 7-4 = vertical refresh at 1024x768
		(0=87Hz-int, 1=60Hz, 2=70Hz, 3=72Hz, 4=76Hz, other reserved)
	    bits 3-0 = vertical refresh at 800x600
		(0 = 56Hz, 1 = 60Hz, 2 = 72Hz, other reserved)
	CH = options 3
	    bits 7-4 = vertical refresh at 1280x1024
		(0=87Hz-int, 1=60Hz, 2=70Hz, other reserved)
	    bits 3-0: reserved
	CL,DX reserved
Return: nothing
SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A3h