PS2 [Open PS2 Loader] Game Bug Reports

Discussion in 'Open PS2 Loader (OPL)' started by jolek, Jul 28, 2018.

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    sp193

    sp193 Developer

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    Jak and Daxter: The Precursor Legacy (SCUS-97124) must be run with everything unhooked, which means Unhook Syscalls, disable IGR and do not enable GSM.

    https://www.psx-place.com/threads/open-ps2-loader-v0-9-3.13415/page-23#post-155382

    Any problem with VMC, could be considered a problem with VMC alone, since it does not affect reading from CD/DVD. Do not forget that SMB mode is the highest memory consumer, so not being able to use VMC with only SMB is not necessarily an indicator of a bug...

    Transfer modes are only applicable to the IDE HDD unit.
     
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    Peppe90

    Peppe90 Member

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    Sata HDDs too.

    Btw as an alternative you could play from USB. This game is perfect from here too (it continuosly stream little chunks of data. Pratically it works the same from every device).

    I don't know if VMC will work from USB, you have to try it.
    I used to play this game from USB, but with another program: PS2ESDL (it just needs the synchronous mode to be enabled for this game).
     
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    xnnonz

    xnnonz Member

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    I tried with PS2ESDL few weeks ago, and game freezes after 10% of completion, I tried X times to get past 10% but it always freezes after the fisherman's mission.
     
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    Peppe90

    Peppe90 Member

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    Are you using PS2ESDL 0.821 ?? Newer versions have some compatibility issues.
     
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    xnnonz

    xnnonz Member

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    I have completed entire Jak and Daxter: The Precursor Legacy game, thanks for help. Heres what I did, I played NTSC US game version with PS2ESDL 0.821 , named the file SCUS_971.24.Jak and Daxter - The Precursor Legacy.iso and placed it in DVD folder, then when I got in PS2ESDL menu I held down arrow, square and triangle to turn on mods, and pressed start while holding these buttons to launch the game, everyting like in one Reddit post execpt for using different PS2ESDL version. Thanks again for you help.
     
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    sp193

    sp193 Developer

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    So you completed the game with PS2ESDL, which does not support VMC. So why not just use OPL, without VMC?

    The useful bits of PS2ESDL were taken and incorporated into OPL. The late version had an earlier design of the IOP reboot mechanism, which was eventually copied and refined for OPL. Few people used it, so it made more sense to focus resources for everybody's favourite software instead.
     
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    Grahf

    Grahf Member

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    OK, guys, are we finally close to 0.9.4? If not, does at least the current beta feature a truly improved compatibility or are there some regressions and it's a matter of swapping one working game for another?
     
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    xnnonz

    xnnonz Member

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    I tried OPL without VMC also had freeze bug
     
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    jolek

    jolek Senior Member

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    Can you sum up your result?
    I mean, e.g:
    Code:
    Title = Jak and Daxter - The Precursor Legacy
    ID = SCUS_971.24
    Media = DVD
    OPL version = 0.9.3, 1406?
    Device = USB?
    Mode(s) = 1+3+6, 3+6?
    VMC = Tried
    Compatible = See notes
    MD5 Checksum = ?
    Notes = Game have problems with saving when VMC will be used.
    It also crashes after fishing mission even without VMC.
    Tried game with and without VMC.
     
    Last edited: Nov 9, 2019
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    xnnonz

    xnnonz Member

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    Title = Jak and Daxter - The Precursor Legacy
    ID = SCUS_971.24
    Media = DVD
    OPL version = 0.6, 0.7, 0.8, 0.9.3, 1619_DB-TA, OPL_1392_ifcaro_beta
    Device = Kingston DT101G2 USB 2.0
    Mode(s) = 3+6 (Blackscreen), 1+3+6 (Playable with freeze bug)
    VMC = Tried
    Compatible = See notes
    MD5 Checksum = ?
    Notes = Game freezes with and without VCM it can be played with modes 1+3+6 but can not be saved, however game is fully playable with PS2ESDL 0.821 with modes down arrow + sqare + triangle (Guess this sums it all up)

    Sorry if I wasn't technical enough but I don't understand what most of terms you guys use even mean. I hope I gave you all the info you need.
     
    Last edited: Nov 9, 2019
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    Peppe90

    Peppe90 Member

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    PAL version too works perfectly with PS2ESDL and you shouldn't need to press triangle or down arrow, just square (synchronous mode).
    All 3 J&D just need to press square.

    Anyway you shouldn't have issues with OPL too. There must be some weird problem.
     
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