neogeo

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  • June 3, 2018 at 7:58 PM #21986
    paulb_nl
    Participant

      I think you need to try these settings: http://junkerhq.net/xrgb/index.php?title=Neo_Geo_AES

      https://videogameperfection.com/forums/topic/neo-geo-cd/

      To rule out the RGB cable, disconnect the RGB cable and try to connect the Yellow RCA out to the green input of AV2. You should get sync like that.

      June 3, 2018 at 8:23 PM #21989
      BuckoA51
      Keymaster

        I’ll put the CSYNC mod through again and see how it goes.

        June 3, 2018 at 9:02 PM #21991
        BuckoA51
        Keymaster

          for CSYNC it’s super dark…

          June 3, 2018 at 9:53 PM #21993
          paulb_nl
          Participant

            Nice that its working now.

            Looking at the datasheet of the Sony CXA 1645P encoder, there is only a CSYNC in pin and not out so just wiring it without a buffer/amp to the DIN connector is not recommended/guaranteed to work.

            If its only dark with CSYNC then you could be damaging the encoder by using CSYNC so I would recommend to use the Luma sync instead. With luma sync you have the same quality video as with CSYNC.

            June 3, 2018 at 11:01 PM #21994
            BuckoA51
            Keymaster

              Ok

              June 4, 2018 at 2:08 PM #22003
              paulb_nl
              Participant

                Yea you don’t need the resistor with Luma because it already has the correct voltage level.

                April 10, 2020 at 4:28 AM #36870
                jcoelho
                Participant

                  Hey cheeseman,

                  This is a very old post and I guess you already found the solution, this happened to me as well and it was solved by tweaking two settings on the OSSC:

                  Sync OPT. > H-PLL Post-Coast 2 lines
                  Sync OPT. > Hsync Tolerance 8.30us

                  Hope that helps.

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