urbanhusky

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  • in reply to: N64 PAL image blanking/unstable, sync issue? #27284
    urbanhusky
    Participant

      Here’s a comparison between 288p GC (perfect picture, no issues) and N64 (picture slightly blurry, mostly horizontal ghost image/blur towards the right border of the screen; sync? issues).
      Both are using Generic 4:3 Line2x mode.

      N64
      Prof.9 288p
      313p 540858 (or 840859)

      AV1: RGBS 313p
      15.62lHz 49.92Hz

      GC
      Prof.9 288p
      312p* 539415

      AV1: RGBS 312p
      15.62kHz 50.08Hz

      OSSC on-time (warmup) doesn’t seem to affect GC, but heavily affects N64 with flickering going down from every couple of frames to something like every couple of dozen seconds.

      Edit:
      Considering that this gets better over time, I’m wondering if there’s an issue with my OSSC. I usually associate such behaviour (issues improving or getting worse over run-time) with temperature or soldering issues. (To be fair, I don’t have that much confidence in the connectors because they have no strain relief, i.e. they are not anchored to the case, but all mechanical energy is directly transferred to the solder joints)

      in reply to: N64 PAL image blanking/unstable, sync issue? #27283
      urbanhusky
      Participant

        I noticed that the issue is worst right after turning everything on. I’ve left the N64 running for a while and then turned on the OSSC and it was pretty bad right after turning it on. I also noticed that the sync info is slightly different, depending on when I push the button on the remote – it’s either Prof.9, 288p, 313p, 540858 or Prof.9, 288p, 313p, 540859.

        I don’t have an option to output a test image so I cannot try to adjust sync. The effect I get is very similar to turning up H-PLL Pre-Coast (or rather it makes it much worse).

        in reply to: N64 PAL image blanking/unstable, sync issue? #27232
        urbanhusky
        Participant

          Huh, okay – it works fine without the receiver. Well, I only get the sound from the TV, obviously, but the image seems to be stable.
          Component video without OSSC directly on the receiver works, that’s what I meant with that.

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