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A comment on Teletext for Raspberry Pi. Parent comment

Re:Teletext for Raspberry Pi by ali1234 on Sunday February 08, 2015 @04:47PM (#9018713)
It isn't documented. I figured it out by looking at the github you linked and then looking at register values and trying to guess what they mean.

About the pixel valves.

The chip has three pixel valves. One is for DSI0, one is for DSI1, and the final one (pixel valve 2) is shared between HDMI and composite.

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Re:Teletext for Raspberry Pi by lovelearning on Monday February 09, 2015 @12:32AM (#9019831)
Thank you for the info, Alistair! Nice work.
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