(PS1) Mayumi 4.0 12F683, 12F675, 12F629

Discussion in 'Modding and Hacking - Consoles and Electronics' started by Mord.Fustang, Oct 20, 2014.

  1. Apexseal

    Apexseal Spirited Member

    Joined:
    Aug 15, 2016
    Messages:
    132
    Likes Received:
    65
    Thanks! BTW I'm sorry I took this thread off-topic...
     
    truemaster1 likes this.
  2. Mord.Fustang

    Mord.Fustang Fiery Member

    Joined:
    Feb 17, 2013
    Messages:
    821
    Likes Received:
    185
    lol no worries! ;)
     
    truemaster1 likes this.
  3. truemaster1

    truemaster1 Enthusiastic Member

    Joined:
    Nov 10, 2015
    Messages:
    521
    Likes Received:
    231
    youre right we overdoit:) many thanks for porting it for 12f683
     
    Last edited: Aug 19, 2016
  4. truemaster1

    truemaster1 Enthusiastic Member

    Joined:
    Nov 10, 2015
    Messages:
    521
    Likes Received:
    231
    I flash the pal version on mayumi 4 to 12f683 pic, and I use it on 7502 pal console and is working ok thanks.
     
  5. psydefx

    psydefx Peppy Member

    Joined:
    Mar 27, 2016
    Messages:
    328
    Likes Received:
    40
    just curious, what setup cd are you referring to?
     
  6. Apexseal

    Apexseal Spirited Member

    Joined:
    Aug 15, 2016
    Messages:
    132
    Likes Received:
    65
    It's an ISO you burn to a CD and it installs freemcboot on your memory card. The console needs to be chipped. Google is your friend my friend. "Free McBoot CD ISO Ready to Install"

    Quote from download page:
     
  7. CZroe

    CZroe Rising Member

    Joined:
    Jan 13, 2013
    Messages:
    69
    Likes Received:
    3
    Recently I've done a lot of ported Mayumi 12F629 testing with multiple PM-41 (A) and PM-41 (2) (A) boards and I can say that the 12F675/12F629 port definitely isn't working on the older and more-common PM-41 (A) PSone even though it works great on the newer PM-41 (2) (A). I'm using the same points successfully with 12C508A and the original HEX. Just thought I'd share since it could save someone a lot of time. :)
     
  8. Mord.Fustang

    Mord.Fustang Fiery Member

    Joined:
    Feb 17, 2013
    Messages:
    821
    Likes Received:
    185
    That's strange and unfortunate. :( Thanks for trying it out and testing it though! Unfortunately, I don't have either of those PSOne models to test it myself.

    Edit: did you use a decoupling cap with it?
     
    Last edited: Aug 1, 2018
    CZroe likes this.
  9. thrasherx

    thrasherx Newly Registered

    Joined:
    Dec 30, 2016
    Messages:
    4
    Likes Received:
    0
    Does anyone remember what the configuration options should be for programming the MM3 code to a 12C508A using the GQ-4X? I'm using a GQ-3X but it should be the same.

    The default config on a blank chip is reported as:
    Oscillator: External RC
    Watchdog Timer: On
    Code Protect: Off
    Master Clear Enable: External

    and the 12C508A chip pinout is:
    Pin 1: VDD
    Pin 2: GP5OSC1/CLKIN
    Pin 3: GP4/OSC2
    Pin 4: GP3/MCLR/VPP
    Pin 5: GP2/T0CKI
    Pin 6: GP1
    Pin 7: GP0
    Pin 8: VSS

    I'm installing this on a PU-8 board, following the instructions from here.

    The instructions indicate I don't need to connect pins 2 and 4. Does that mean that Oscillator setting should be "Internal RC" and that the Master Clear Enable should be "Internal"? My understanding is that I should turn off Watchdog Timer and Code Protect. In that case, the configuration would look like this:

    Oscillator: Internal RC
    Watchdog Timer: Off
    Code Protect: Off
    Master Clear Enable: Internal

    Thanks in advance!
     
  10. TriMesh

    TriMesh Site Supporter 2013-2017

    Joined:
    Jul 3, 2008
    Messages:
    2,353
    Likes Received:
    777
    You are correct - but it's also worth pointing out that the PU-8 / MM3 wiring you reference is not entirely reliable as far as stealth goes. It's better than using 4-wire mode since it bypasses some modchip checks, but there are titles it fails on.

    There is no 100% stealth solution for PU-8 as far as I know.
     
  11. thrasherx

    thrasherx Newly Registered

    Joined:
    Dec 30, 2016
    Messages:
    4
    Likes Received:
    0
    Excellent, thank you! Someone else told me that Watchdog should be on and Master Clear Enable should be external. So confusing. Any clarification?
     
  12. TriMesh

    TriMesh Site Supporter 2013-2017

    Joined:
    Jul 3, 2008
    Messages:
    2,353
    Likes Received:
    777
    There is no watchdog service code in the MM3 hex, so turning the watchdog on will result in the chip constantly restarting. Setting MCLR to external will result in the chip being reset every time you press the reset button on the console - which means that you won't be able to change the operating mode since you have to hold reset down to change modes.
     
    thrasherx likes this.
  13. thrasherx

    thrasherx Newly Registered

    Joined:
    Dec 30, 2016
    Messages:
    4
    Likes Received:
    0
    I got the mod chip to work and now am troubleshooting a bit. Thanks for your help!
     
  14. rama

    rama Gutsy Member

    Joined:
    Dec 17, 2015
    Messages:
    477
    Likes Received:
    112
    There's always PsNee, of course. It works with full stealth on all console revisions :)
     
    truemaster1 and Taijigamer2 like this.

Share This Page