Official use of the Playstation serial and parallel I/O

Discussion in 'Sony Programming and Development' started by unclejun, May 10, 2008.

  1. Johnny

    Johnny Gran Turismo Freak and Site Supporter 2013,2015

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    Pics? Link?
     
  2. Arkanoid

    Arkanoid Gutsy Member

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  3. Johnny

    Johnny Gran Turismo Freak and Site Supporter 2013,2015

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    :thumbsup:
     
  4. PSPdemon

    PSPdemon Peppy Member

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    Sorry for going offtopic... but what were the unofficial uses for the parallel port?

    edit: besides cheat devices
     
    Last edited: Aug 21, 2009
  5. Arkanoid

    Arkanoid Gutsy Member

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    As shown above, various handheld game adapters, i think a wireless link cable adapter, memory expander, and I know there are others but they seem to slip my mind right now.
     
  6. Mugi

    Mugi Site Supporter 2013,2014,2015

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    gameshark+caetla combo for some sort of dev'ing is one use i think?
     
  7. _SD_

    _SD_ Resolute Member

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    There were a few models of VCD Player and a device enabling the use of MP3 CDs; I'm sure it had L/R audio jacks and a remote control.
     
  8. san186

    san186 Rapidly Rising Member

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    Mine was used to play back ups :)

    You needed to use any PSX original, wait for the disc to stop spinning and then swap the discs (It was also a part-time action replay :D)
     
  9. defor

    defor Intrepid Member

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    I believe that's pretty common functionality and most PAR/GS/clones can be reflashed to do the same...

    I hadn't looked at the "parallel" port much before until I was glancing at that part of the schematics, but it strikes me that the emulator was indeed an IDEAL usage for the port- The pins seem to pretty much exist solely for either patching in and/or replacing the bios chip, as well as doing the same for the entire cd block.

    My question:
    It looks that it would be possible to make a flash cart for this port that would contain an entire replacement bios, not just patches like cheat/mpeg/etc carts do...
    Has this already been done, and/or is there some way to coax a retail device into doing the same?

    I'd greatly enjoy an international bios for my SCPH-1000, and similar
     
  10. unclejun

    unclejun Site Supporter 2011-2014

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  11. defor

    defor Intrepid Member

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    I've seen that- was more wondering if the port alone could function for this..., and tell the bios to disable on its own without hijacking in from mid-plane
     
  12. defor

    defor Intrepid Member

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    Last edited: Apr 8, 2010
  13. unclejun

    unclejun Site Supporter 2011-2014

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    Nice!
    Is it yours?
     
  14. Twilight

    Twilight Site Supporter 2015

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    Never seen it before. What's this?
     
  15. unclejun

    unclejun Site Supporter 2011-2014

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    Read the previous page, you'll see...
     
  16. Twilight

    Twilight Site Supporter 2015

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    Yeah, sorry. What's this for?
     
  17. defor

    defor Intrepid Member

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    Yep- it is mine- I also ended up also getting the PsyQ emulator card (which I have a feeling is needed for the blue cart, rather than the normal psyq scsi card, but I also needed it for my ps tool setup anyway...) http://www.flickr.com/photos/defor/sets/72157623805154726/

    The cart also came with these discs- I'll have to see if there's anything special on them:
    [​IMG][​IMG]

    I'm guessing they're just a horrible label design for the normal cd's though!
     
    Last edited: Apr 8, 2010
  18. ASSEMbler

    ASSEMbler Administrator Staff Member

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    man that shit is all asic
     
  19. Twilight

    Twilight Site Supporter 2015

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    defor, it doesn't have a DTL model number... It's strange. It must be a DTL-S2020.
     
  20. defor

    defor Intrepid Member

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    Based on the docs:
    the cart has 2 different variants - i believe, based on the eeprom and battery that this is the later revision with the onboard ps bios replacement, I'll try tonight when I get home.

    (it also doesn't match the press/advertising photos of an obviously shorter cart-probably the bios-less variant which would account for a removal of battery and eprom)

    so true, and so very disappointing, but I suppose somewhat expected...

    s2020 is the INTERNAL isa cd emulator board that i also received.


    ---

    Also, after reading PSYQ2.PDF, I don't have the right board for the job- I need the basic psyq board- this thing:
    [​IMG]
    does anyone have a spare they can.. spare? I'd rather try it on the approved board before trying it on a possibly dangerous one given the warnings about using other psyq devices on non psyq boards!!
     
    Last edited: Apr 8, 2010

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