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PS2 progressive – no sync?

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This topic contains 6 replies, has 4 voices, and was last updated by  nmalinoski 2 weeks ago.

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  • #14987

    crocskin
    Participant

    HI
    I have a problem running a 480p output from my PS2 into the OSSC – and am hoping someone here may be able to help me out?
    PS2 fat model is in RGB output mode – cable is a decent RGB start with sync on luma.
    Displays 480i no problem – cable also works perfectly on PS1 into the OSSC

    When I choose progressive output in street fighter anthology the OSSC immediately displays ‘NO SYNC” and the screen goes black. Is there a setting on the OSSC that needs changing.

    Thanks in advance!

    #14990

    nmalinoski
    Participant

    In short, on the OSSC, you need to change the format for AV1 to RGsB when using 480p from the PS2.

    From what I’ve read on the Shmups forums (and on Wikipedia), when using RGB, the PS2 switches to RGsB for 480p. Someone can correct me if I’m wrong, but it sounds like luma gets shut off (or becomes non-compliant) during the switch, leaving you without a sync signal on pin 20 as expected, and the OSSC [at least at this time] does not support automatic format detection/switching.

    #14998

    BuckoA51
    Keymaster

    That assessment is correct, only Ypbpr or RGsB is available when running 480p on the PS2. I suppose this is because composite/s-video doesn’t support resolutions greater than 480i.

    #15010

    Mikeyy00
    Participant

    I had this exact issue, and even switching over to RGsB I had no sync.

    The only way to do it was to connect my PS2 directly (no switches) via scart, select YPbPr mode on the PS2, and change the input on the OSSC to YPbPr, and it was good (the PS2 outputs RGB and Component over the same pins), so my Scart cable was acting as a component cable really.

    Bob had a video of the Sync over green on his PS2, and I cannot for the life of me get mine to behave the same.

    #15011

    BuckoA51
    Keymaster

    the PS2 outputs sync on green on the same pins too, no idea why it didn’t work for you, is your PS2 modded?

    #15014

    Mikeyy00
    Participant

    Nope, stock fat. Using FreeMCBoot.

    #15015

    nmalinoski
    Participant

    The only way to do it was to connect my PS2 directly (no switches) via scart, select YPbPr mode on the PS2, and change the input on the OSSC to YPbPr, and it was good (the PS2 outputs RGB and Component over the same pins), so my Scart cable was acting as a component cable really.

    If your SCART switch does automatic switching, I can believe that RGsB wouldn’t work through it; I’m sure the loss of sync on pin 20 causes it to start scanning. If it’s a manual switch, the only thing I could think is that it, for whatever reason, won’t forward anything if a sync signal is absent.

    What I don’t understand is how RGsB still doesn’t work when connecting your PS2 directly to your OSSC.

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