INT 10 - VESA XGA BIOS Extensions - SET XGA VIDEO MODE

	AX = 4E03h
	BX = video mode
	CX = other command flags
	     bit 0  If clear the feature connector is set to the default state
	DX = XGA handle
	ES:DI -> 256 byte buffer
Return: AL = 4Eh if function supported
	AH = status
	    00h	 function successful
	    else error code
SeeAlso: AH=00h,AX=4E04h,AX=4F02h