phl0w

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  • August 29, 2022 at 8:38 PM in reply to: Optimal timings for original Xbox (and Xbox 360) #54661
    phl0w
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      Very old thread but I am in the process of getting the best picture out of my xbox360@480p (hooked via 360 VGA cable to OSSC and via HMDI to a 1440p gaming monitor). What I find weird is the v.active 240. It leads to a VERY thin and long image. Also, are these timings for 480p passthru or line2x?

      Up till now I just used 480p line2x with the default timings and allow upsample2x “on” to soften the image a bit (not a fan of the oversharpened look).
      Thanks

      August 24, 2022 at 4:12 PM in reply to: ps2 240p timings #54579
      phl0w
      Participant

        Thanks again, learning a lot.
        I just found that line5x with format 1600×1200 produces the cleanest, sharpest image.
        advanced timings are:
        samplerate 2046
        h.synclen 150
        h.active 1600
        v. synclen 3
        v. back porch 15
        v. active 240
        phase 180°

        Can I optimise this? There is a thin blue noise line to the left of the picture. How do I get rid of this?

        EDIT: Found a note that at line5x 1600×1200 one should set samplerate to 1950. Did it and it got rid of the blue line and the image to my eyes really is as good as it gets, I guess.

        August 24, 2022 at 10:04 AM in reply to: ps2 240p timings #54567
        phl0w
        Participant

          Thanks for the in-depth response, really appreciate it.
          I tried your suggestion and the sample rate* stretches the picture far beyond the borders the PS2 puts out.I had to reduce it to 1640 to get a picture within the resolution’s boundaries. I then payed around with back porch to center the image.
          The thing with this game is that it’s a weird one. It’s output is 224×448 (in Tate like the arcade).

          You might also get some clarity issues with games that use a 384 or 512 pixel resolution

          I don’t care about other games. I maintain a ps2 exclusively for this game alone plus another shmup which has the same 224×448 output. That’s why I really wanna fine tune the OSSC for this kind of signal.
          Any ideas or should I stick with 1640 if it works? Thing is I don’t notice a difference to the 1560 I had it set to before.

          * you came up with that sample rate via pixel clock/h.frequency right? 13500000/15730=858,xxx -> x2 oversampling = 1716,xxx. I guess this would yield a proper picture for a standard 240p (320×240) signal? But the game being that weird (224×448) it’s a different thing.

          another edit: I used line2x and it defaults to half the settings you recommended (858 samplerate and 62 h.synclen). However, at line2x my monitor renders it at 720×480 which is a 3:2 aspect ratio instead of 4:3.

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