INT 10 - VESA SuperVGA BIOS v2.0+ - GET MAXIMUM SCAN LINE LENGTH

	AX = 4F06h
	BL = 03h
Return: AL = 4Fh if function supported
	AH = status
	    00h successful
	    01h failed
	BX = maximum bytes per scan line
	CX = maximum number of pixels per scan line
Notes:	this function is valid in text modes, provided that pixel values are
	  multiplied by the character cell width/height
SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h,AX=4F06h/BL=02h,AX=4F07h