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Bitfields for C&T F65520/525/530 status

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Bit Description

15 - 0

reserved

6 - 5

type of clock chip
00h = 404
01h = 404A
10h = 404B ES
11h = 404B

4

accelerator enabled

3

both displays active

2

video polarity (1 = inverted)

1

output device
0 - CRT
1 - flat panel (LCD)

0

reserved