Neo Geo Mini

Discussion in 'Other Consoles & Oldies' started by shinrukus, Aug 8, 2018.

  1. FreePlayFlorida

    FreePlayFlorida GBAtemp Regular

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    I have a UK (international) version completely untouched, fired it up once and thats it, if you still need img files? lmk
     
  2. shinrukus
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    shinrukus GBAtemp Regular

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    VERY much so, I'd appreciate it! Just follow my instructions on Page 9, and then upload the rootfs.tar somewhere and PM me when you got it to a good area.
     
  3. hackotedelaplaqu

    hackotedelaplaqu GBAtemp Advanced Fan

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    The driver is located in the system.img (modules/joydev.ko) not the misc.img.
    You'll overwrite it even with partial systèm.img don't you think?
     
  4. shinrukus
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    shinrukus GBAtemp Regular

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    True... very possible youre right.

    I can at least get the vendor.img from an international version...
     
    Last edited by shinrukus, Jun 20, 2019
  5. hackotedelaplaqu

    hackotedelaplaqu GBAtemp Advanced Fan

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    We should be able to add jscal script on system.img or via putty uart command. Seems calibration issue is very common on linux with joydev driver.
     
  6. shinrukus
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    shinrukus GBAtemp Regular

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    i've found other versions of that joydev.ko driver, and I understand how its loaded, but the problem is, there are 3 different versions of the joystick i've seen, and 2 of them are almost identical. The bigger issue is I've never run into the joystick problem either, so I'm not a good test.

    I'm very interested in attempting to swap out that joydev.ko driver, with another one to see if that fixes the issue. At most I can attempt it on one of mine and see if it breaks it completely. Either way, i'll post up the system.img for this.

    Also keep in mind, I learned Linux in the middle of April fully, for this purpose... I knew basics of using Ubuntu, but I've never gone to the extent I've done for Linux before, so every piece of information you guys give me, I use for this purpose lol


    Side note, I learned C++ to be able to work with the source of mvsnjemu.... still cant run a good make, but at least i'm able to spot problems now
     
  7. hackotedelaplaqu

    hackotedelaplaqu GBAtemp Advanced Fan

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    I don't mind beta test the driver Swap, even if there a risk of brick. Mine is already broken so don't take the risk and PM me the modded IMG file.
    Just to be sure, the other drivers are based on Mips architecture too ?
     
  8. Bubbypop

    Bubbypop GBAtemp Fan

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    I got the joystick bug give us a shout if you need some testers
     
  9. shinrukus
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    shinrukus GBAtemp Regular

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    Problem, joydev.ko needs to be compiled for every device its on, that could work in our favor for using other mips based
    I'm actually working on that now, what I wound up doing is grabbing the dingux source, and running a build on it, and since its already a mips based linux firmware, hopefully i'll be able to use the drivers, if not port it to the ngm
     
  10. shinrukus
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    shinrukus GBAtemp Regular

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    so I had to build from scratch Opendingux as it had the drivers compatible with the mips architecture, JUST to get the driver, and insmod script, but I got it, and compiled it in the system.img

    https://drive.google.com/file/d/1xWDTw3dR2K7jAXnynpMyA9X_Y9WmlHpB/view?usp=sharing

    This system.img however is also based on my USB Redirector script, so if you use it, dont erase your whole flash, just the data and cache partitions, and put your /res folder from the vendor.img to the root of your flash drive/portable hdd, and call the drive NEOGEO
     
    Last edited by shinrukus, Jun 21, 2019 - Reason: Fixed Link
  11. shinrukus
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    shinrukus GBAtemp Regular

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    So sorry to tell you guys, I got a confirmed no go on that new driver :/
     
  12. Bubbypop

    Bubbypop GBAtemp Fan

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    Just tested doesn't change nevermind guys
     
  13. hackotedelaplaqu

    hackotedelaplaqu GBAtemp Advanced Fan

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    I'm starting to doubt that the issue is related to the joydev driver or faulty resistors in joypad board.
    Indeed, I made new tests : booting the NGM WITHOUT the joystick's card plugged. The bug still occurs !!! Cursor is moving automatically to the left or simply blowing to the pins make it moves and stop. Maybe the main motherboard was damaged in the flashing process ?

    I'm thinking about buying a new one and making a dump the hard way. But where are located the tx rx and gnd pins in in the international rev ?
     
  14. shinrukus
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    shinrukus GBAtemp Regular

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    I don't know if you are on the discord with us, but the person who dumped the rom, didnt use the uart port. But, the port slot is right by the power.

    But that also gets me thinking, MAYBE its a power issue?

    — Posts automatically merged - Please don't double post! —

    Now that I think about it, it sounds more and more like a power issue... Try using your NGM in a powerstrip... that would also explain why changing the controller board would fix it because its a different board, so power conducivity issues wouldn't effect it. That also explains why I haven't gotten it at all flashing 100s at this point, because i'm using a Monster Power Strip that cleans and cycles power.
     
  15. hackotedelaplaqu

    hackotedelaplaqu GBAtemp Advanced Fan

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    Found the pins in the back of the main board. Thanks. Trying power strip doesn't solve the issue saddly.
     
    shinrukus likes this.
  16. shinrukus
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    shinrukus GBAtemp Regular

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    i don't know if it'll help you, but I can give you a passwd -d root script that should get you UART access
     
  17. shinrukus
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    shinrukus GBAtemp Regular

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    So I dumped the rootfs of the international edition, and created a new vendor.img out of the vendor partition. it is NOT the same as whats currently out there, its different, and as such won't boot with the system.img thats currently available. So tomorrow im gonna buy ANOTHER one... and attempt to flash the newly dumped vendor.img on that one and see how it rolls.
     
  18. shinrukus
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    shinrukus GBAtemp Regular

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    So I have 2 confirmed international vendor.img flashes with no joystick bug (3 if you count my new one). Something I learned (the hard way) is that there are more languages on the International Version's vendor.img then the Japanese one.
    upload_2019-6-22_19-25-11.
     
  19. subcon959

    subcon959 teh retro

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    Dec 24, 2008
    Thats great, do you think it could reverse the joystick bug on an international edition?
     
  20. hackotedelaplaqu

    hackotedelaplaqu GBAtemp Advanced Fan

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    Could you share the International Vendor image please ?
    Thanks.