shephard

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  • March 31, 2018 at 12:26 AM in reply to: N64 PAL picture shaky until OSSC restart #20514
    shephard
    Participant

      I bought the console already RGB-modded about three years ago. It is the french model where the “offical” RGB-circuitry is already on the PCB and one has to solder just the missing SMD components to restore RGB functionality. I’ve only done the sync mods by myself.

      March 28, 2018 at 8:16 PM in reply to: N64 Settings #20466
      shephard
      Participant

        Interesting, thanks for the info and for testing! I guess the problem is my TV after all which is a bit odd indeed. It’d be interesting if anyone got that ever working with a TV, but nice to know it could basically work. For PAL games I’ll stick with line4X mode for now.

        March 28, 2018 at 11:08 AM in reply to: N64 Settings #20460
        shephard
        Participant

          I guess it was a bit unclear, I also set V.Active to 288, of course. I just wanted to point out I lost sync as soon as I set V.Active only one point higher which didn’t happen to me on other modes. With V.Active at 272 or 288 I’m not able to get the sync back. I’m afraid line5X does something differently than the other modes and somehow constraints the resolution on the vertical side.

          March 28, 2018 at 1:19 AM in reply to: N64 Settings #20456
          shephard
          Participant

            I’ve already played with the advanced timing settings and have some questions:

            1. The proper advanced timing setting profile for lineX5 1600/1920×1200 and even 1920×1080 is 1536×240, right? For PAL inputs the profile changes to 1536×240L. What does the “L” mean and why isn’t there a profile like 1536×288 for PAL in the first place? For lineX4 for example there is a profile called 1280×288. It seems to me that at least in line5X mode the vertical resolution of 1200 is fixed (see point 2).

            2. If I increase V.Active in forementioned profile by only one point I immediately lose sync (V.synclen/V.backporch are decreased to 1). Well, it’s not quite a sync loss (red LED is off), I can still hear audio but I get no picture, just a screen showing “invalid format”. That seems a bit odd because I’ve got a quite tolerant TV (4K LG OLED E6, 1440p is supposed to work) and every other mode works fine. How does this profile work exactly? Can I imagine the OSSC sends a 1600/1920×1200 frame to the TV and by the advanced timing settings we’re “fiddling” the image in? That would explain why I can’t get past 1200 vertical resolution and a 1920×1440 frame is needed.

            Do I maybe have to alter other settings or won’t it work the way it is now? Is 1440p basically possible with the current OSSC hardware? Thanks for your help!

            March 27, 2018 at 10:45 PM in reply to: N64 Settings #20448
            shephard
            Participant

              I’ve been doing a lot of testing with N64 PAL games in lineX5 mode, but especially (optimized) RARE games are missing a good portion at the top and bottom of the picture. This happens in 1920/1600*1200 mode, in 1920*1080 mode there’s missing even more, of course. So I guess lineX5 basically is for NTSC games. For an optimized PAL game to display properly the vertical resolution has to be 5*288=1440 at least (in contrast to NTSC with 5*240=1200), is that about right? Could this be implemented as another resolution option or isn’t that possible on the hardware side?

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