Format of XGA mode information:
Offset	Size	Description	)
 00h	WORD	attributes of the mode (see #00074)
 02h	WORD	bytes per logical scanline
 04h	WORD	horizontal resolution in pixels
 06h	WORD	vertical resolution in scanlines
 08h	BYTE	character Width in pixels
 09h	BYTE	character Height in pixels
 0Ah	BYTE	number of planes
 0Bh	BYTE	bits per pixels
 0Ch	BYTE	memory model (see #00075)
 0Dh	BYTE	number of Image Pages
 0Eh	BYTE	number of Red bits
 0Fh	BYTE	bit position of Red bit field
 10h	BYTE	number of Green bits
 11h	BYTE	bit position of Green bit field
 12h	BYTE	number of Blue bits
 13h	BYTE	bit position of Blue bit field
 14h	BYTE	number of Reserved bits
 15h	BYTE	bit position of Reserved bit field
 16h 235 BYTEs	reserved