When we have a look into the saa7111a datasheet (chapter 17), we will find
some registers that may effect the color:
- Chrominance control: Subaddress 0x0E old value 0x01, new value 0x01
- GUDL: Subaddress 0x02 old value 0xD0, new value 0xC0
- BYPS: Subaddress 0x09 old value 0x01, new value 0x01
Could you please test 0xD0 at Subaddress 0x02?
I tested value 0xd0 at subaddress 0x02. It did not change the video colour.
So
what I did was change all the new values that were implemented.
a) 0x08 subaddress with value 0x08 is causing the black & white display.
if I change this value back to the original value of 0xc8 then the colour
comes back.
b) 0x06 subaddress with value 0xf6 change the position at the right side
of the video window. I get a huge black line. It's really bad.
They are the only two original values that I would keep. All the rest of
subaddress
I used the new settings.
At least we could have a Black & White parameter when load the device module 8*)
I have a dvd movie running now, check out the output. Again the only two
changes
that I did are above. I'm interested in how this affects PAL or a S-Video
connection.
http://www.emuit.com/webcam.html
Dwaine.
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