wbahnassi

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  • March 29, 2024 at 4:31 PM in reply to: VSync detection issues after FW upgrade from 0.x to 1.X #61016
    wbahnassi
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      Hi, I faced the same with my MSX as well. However, for me 1.08 didn’t work, and I had to go all back to 0.9. I did investigate what’s the reason and I think I know where the problem is. In 1.09, choosing Generic 4:3 on Line5x is causing the OSSC to choose timings for 960×288, whereas the previous firmware is choosing 1600x240L.  I think we need a fix to make Generic 4:3 Line5x choose 1600x240L again.

      In the meantime, I managed to get back picture on Line5x on 1.09 by not using Generic 4:3, but 512×240 optim instead. Then I had to adjust timings for 512x240LB mode to the following values:

      * H. sample rate = 684.0
      * H. synclen = 50
      * H. backporch = 51
      * H. active = 570
      * V. synclen = 3
      * V. backporch = 41
      * V. active = 240
      * Sampling phase = 90 deg

      Some of those values will vary for your monitor/TV, but the above works fine for me without needing any additional LPFs even. But yeah, I still prefer to go back to Generic 4:3 as that one worked fantastic without any tweaking.

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