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NOSYNC Japanese PSONE

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This topic contains 14 replies, has 4 voices, and was last updated by  clairobskur 2 weeks, 5 days ago.

Viewing 15 posts - 1 through 15 (of 15 total)
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  • #9643

    clairobskur
    Participant

    hello. i’ve received the OSSC two days ago, tried with various consoles and i’m very happy with it. i’ve initially tried it with PS2, dreamcast, saturn and wii. all fine.
    yesterday i’ve tried it with my japanese PSONE (non-modded SCPH-100) and unfortunately it doesn’t work (AV1 NOSYNC). i can hear the playstation chime, but i see only the test pattern (with or without a game disk inserted).
    i’m using the same rgb scart that i use with my PS2 slim (PAL modded SCPH-90004). the same cable works if i connect the PS2 to the OSSC, and also works if i connect the PSONE to my CRT TV.
    i’ve read the wiki and tried changing various settings with no luck.
    any ideas?

    #9656

    BuckoA51
    Keymaster

    Strange, PS1 console is working for me. Have you tried playing with the Hsync tolerance values?

    #9661

    clairobskur
    Participant

    yes. already tried that.
    anyway, i don’t think that all the ps1 are the same. mine is a japanese psone (the super tiny model).
    later today i’m going to try using a component cable. theoretically the psone should output RGsB through a component cable right?

    #9662

    BuckoA51
    Keymaster

    No, only PS2 does that and then only in 480p mode.

    #9664

    clairobskur
    Participant

    you’re unfortunately right. it doesn’t work. i guess that i should continue to use my crt. at least with the psone

    #9666

    marqs
    Participant

    Does that RGB cable have standard wiring or something special? I don’t see any reason why SCPH-100 sync signal would be that different.

    #9672

    clairobskur
    Participant

    i don’t really know. i just bought this cable on the web some years ago.

    #9674

    clairobskur
    Participant

    ohh. i found it. the cable i bought is this one: https://www.amazon.co.uk/gp/product/B000IV1OHE/

    #9721

    marqs
    Participant

    Ok, I guess there’s nothing wrong in the cable. Actually this case could be reminiscent to Neo-Geo, where a certain model really had different sync signal. That was fixed by first setting H-PLL pre and post coast to 3, and then increasing “Hsync tolerance” to around 10us or even higher, so you could try the same.

    #9732

    clairobskur
    Participant

    I’ve tried, but it doesn’t work even if i set hsync tolerance up to the max value.

    #9733

    paulb_nl
    Participant

    Does it sync on AV2 when you connect a composite video cable to the green component input?

    #9734

    clairobskur
    Participant

    i should find a composite video cable for playstation first. i’ve never actually used one, but there should be at least one in some box somewhere.

    #9748

    clairobskur
    Participant

    ok. tried. still nosync, but there was some reaction sometimes. composite video cable to green component input, H-PLL pre and post coast to 3, “Hsync tolerance” to 10us or 10.15us. sometimes the test pattern go away and the red led on the ossc turn on… still nosync. but it happened only 2/3 times… most of the times the ossc doesn’t react at all.

    #9751

    marqs
    Participant

    That indicates there’s some irregularity in sync signal, but without examining it with oscilloscope it’s quite hard to guess what exactly is wrong and how it might be fixed.

    #9754

    clairobskur
    Participant

    ok. thanks. i’ve bought the ossc mostly for the ps2 and dreamcast anyway.

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