Reply To: 400p mode for retro PC

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#27227
marqs
Participant

There would be effectively 3 different presets for 400p:

640×400: passthru and line2x (active when 400p sampler set to 640×400@70Hz)
720×400: passthru and line2x (active when 400p sampler set to 720×400@70Hz)
1600×400: line3x only

I’m afraid the 3rd one is not going to be operational at samplerate of 2000, though, since the resulting pixel clock would be around 189MHz which is more than 162MHz recommendation of HDMI TX chip.