OSSC – Best option for PS1

Viewing 7 posts - 1 through 7 (of 7 total)
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  • #47909
    Opaque79
    Participant

    Been using optimal timings when possible but PS1 is difficult.

    1. Being in a PAL region, I lose parts of the image on a lot of games
    2. PS1 resolution isn’t consistent

    Using 5x mode for the most part as my TV displays most optimal timings in that mode

    #47910
    Harrumph
    Participant

    If you search forum (or maybe google is better at finding it) there was a guy who made profiles for PAL systems.

    My advice though would just be generic mode, with the 270 v.active tweak for 1080p output in 4x mode. See tips & tweaks thread for more info on that.

    #47911
    Opaque79
    Participant

    Err…that was me. You mean this

    Makes sense really. Only time optimal timings really work on PS1 is if the resolution is consistent

    #47939
    Harrumph
    Participant

    Ah right lol goldfish memory 🙂

    #48581
    Opaque79
    Participant

    Just noticed. Tested my PS1 512 profile with a few games in that resolution. Works fine but Tony Hawk’s Pro Skater 3 requires a different sampling phase setting despite being a 512 game.

    The other games tested were
    Tomb Raider III
    Tomb Raider – The Last Revelation
    Spyro the Dragon
    Crash Bandicoot

    All are fine with Sampling at 90 deg but THPS3 requires 202 deg to have a sharp image despite being the same resolution. Why is this?

    #48584
    Zacabeb
    Participant

    All resolutions in the PlayStation are based on a fixed subpixel clock that’s a high enough multiple to cover all the supported output resolutions. Each pixel is simply repeated for a suitable number of those subpixels when output.

    When a game sets up the start position of the frame buffer relative to the horizontal sync, it’s done in steps given by this subpixel clock. Hence the pixels in one game may be shifted a fraction of a pixel compared to the pixels in a different game running at the same resolution.

    #48586
    Opaque79
    Participant

    So because of that, some games need a different sampling phase setting?

    I only use optimal timings on PS1 games that use a consistent resolution. If the games switches resolution often (FF7 for example), it’s not worth it

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