Bitfields for C&T F65520/525/530 status:
Bit(s)	Description	)
 15-0	reserved
 6-5	type of clock chip
	00 = 404
	01 = 404A
	10 = 404B ES
	11 = 404B
 4	accelerator enabled
 3	both displays active
 2	video polarity (1 = inverted)
 1	output device
	0 CRT
	1 flat panel (LCD)
 0	reserved