INT 10 - VESA SuperVGA BIOS - GET CURRENT VIDEO MODE

	AX = 4F03h
Return: AL = 4Fh if function supported
	AH = status
	    00h successful
		BX = video mode (see #00083,#00084)
		    bit 13: VBE/AF v1.0P accelerated video mode
		    bit 14: linear frame buffer enabled (VBE v2.0+)
		    bit 15: don't clear video memory
	    01h failed
SeeAlso: AH=0Fh,AX=4E04h,AX=4F02h