Format of ATI Super Switch data area:
Offset	Size	Description	)
 00h	DWORD	original INT 09 vector
 04h	DWORD	original INT 10 vector
 08h	DWORD	original INT 1C vector
 0Ch	WORD	screen saver state, 0=off, 1=on
 0Eh	WORD	blanking interval in clock ticks