INT 10 - VESA SuperVGA BIOS - SAVE/RESTORE SuperVGA VIDEO STATE

	AX = 4F04h
	DL = subfunction
	    00h get state buffer size
		Return: BX = number of 64-byte blocks needed
	    01h save video states
		ES:BX -> buffer
	    02h restore video states
		ES:BX -> buffer
	CX = states to save/restore (see #00085)
Return: AL = 4Fh if function supported
	AH = status
	    00h successful
	    01h failed
SeeAlso: AH=1Ch,AX=5F90h,AX=5FA0h