Pinned System 32 desuicide and conversions: all games patched and released!

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    • A friend sent me a suicided GA2 to install the decrypted ROMs onto, I've burnt them all (I used the original EPROMs because I know they're the correct type) and I just get a black screen on boot. I've removed the security board since it's unnecessary and I thought that may be causing the problem (though if it doesn't matter/doesn't cause any problems I'll put it back just because it looks more complete that way)

      Any ideas @Apocalypse ? I'm not sure where I've gone wrong, straight black screen suggests suicide, not sure what else it's likely to be. Board is super clean, looks barely used. It does have another daughterboard attached but this looks like it might be for 3/4 player?

      I also removed the coin cell battery on the board, no change with or without it, though I assume this is the suicide battery and it's long since dead.

      I did notice that the original ROMs (looking at the MAME driver) were Japanese region - but before I burned the replacement decrypted ROMs I confirmed that all the other ROMs were the same.

      The post was edited 1 time, last by xodaraP ().

    • This is 100% tested and working, and both our sets have the same effect, and should allow the board to boot.

      - The security module can be removed.
      - The daughterboard is for multiple player inputs, yes.

      - These romboards are a good place to steal jumpers from. I've done it a few times myself. Are all the jumpers verified?
      - Did you check this romboard on another system32 mainboard yet? (Or try a working romboard on this motherboard?)
      If you want to support me, sign up for Dropbox by using db.tt/05qkhkFLVC. This gets you and me an extra 500MB for hosting roms, or other arcade related files :)
    • The jumpers are all present but no idea if they're correct as I don't have a reference for what they should be.

      I've got your jumper settings but this is obviously using EPROMs and creating a conversion - this board has all the original mask ROMs on it and uses 27C210A/27C020 for main program ROMs.

      There's a ridiculous amount of jumpers so I don't want to just go playing around with them, especially when the board looked like it hadn't been touched before I removed/erased/reprogrammed the main CPU code.

      I will say that the jumpers on here are different to the list you posted in the conversion thread

      I don't have another set to use to test it against
    • these jumpers worked for my conversion, and I got them off of screenshots from stock boards. I think you're OK to give them a try:

      Jumpers (U covers pins 1-2, D covers pins 2-3)
      DUDUDUUDUDUDUDUUUU /other side/ UUDD / bottom of board / UD

      Released: Golden Axe 2 Desuicide
      multis: cps* ttx2 gnet f3 mvs sega st-v/16b/24/c2/naomi(netboot) sys2x6 m72
      cabs: sega blast city x2 | taito vewlix c + egret ii
      links: klov/vaps games list | custom fight sticks
      projects: some conversions, some repairs
    • Maybe the game wasn't suicided but there was an other fault causing a black screen. Or maybe it was but there was an other fault too.

      What's the history of that board? It's not rare a board develops a fault, is put on the shelf and many years later the battery dies. Then you get your hands on it thinking it's just a matter of suicide battery.
      Looking for:
      - OutRun boardset even untested or not working
      - Sega Super Scaler hardware (Out Run, Model X, Model Y), even with faulty PCM chip



      01010011 01000101 01000011 01010010 01000101 01010100 00100000 01001101 01000101 01001110 01010101 00100000 01000111 01010101 01011001

      The post was edited 1 time, last by Apocalypse ().

    • I agree it's definitely a possibility - the jumpers are set correctly. It just makes it difficult when I don't have another ROM board to test it with

      The only history I have on it is the tag that's on it that says it was tested in March 2012 and tagged faulty/not booting, but this could just as easily have been due to suicide which is what I would have assumed.

      It boots to the same black screen regardless of whether the ROM board is installed, I need to figure out whether it's actually running code I guess.

      The post was edited 1 time, last by xodaraP ().

    • xodaraP wrote:

      Does it make a difference using the 27C210A EPROMs vs 27C1024? They look like the same pinout
      No. However you shouldn't have reused the OG EPROMs, first you might have erased an undumped version of the game (but maybe you dumped the ROMs first?), then you cant' go back to the OG configuration without having a doubt about almost anything: are the ROMs OK, are they burnt properly, etc.

      It happened to me before, I reburnt OG EPROMs (after checking they were known in MAME indeed) to change the region of a game and although they were working fine before once reburnt game just kept crashing... They probably didn't like to be erased or something like this. My programmer even reported them good and burnt properly but I guess timings are a lot more forgiving than on real hardware.
      Looking for:
      - OutRun boardset even untested or not working
      - Sega Super Scaler hardware (Out Run, Model X, Model Y), even with faulty PCM chip



      01010011 01000101 01000011 01010010 01000101 01010100 00100000 01001101 01000101 01001110 01010101 00100000 01000111 01010101 01011001
    • xodaraP wrote:

      I did dump them first and they came up in ROMIdent as the Japanese region ga2j - I also confirmed in the MAME driver that the other ROMs are the same across versions

      I do have spare 27C1024 EPROMs so I'll try a new set
      Glad to hear that ;)
      Looking for:
      - OutRun boardset even untested or not working
      - Sega Super Scaler hardware (Out Run, Model X, Model Y), even with faulty PCM chip



      01010011 01000101 01000011 01010010 01000101 01010100 00100000 01001101 01000101 01001110 01010101 00100000 01000111 01010101 01011001
    • I finally got around to converting a small board into Spiderman, since it's unsecured, while I wait on this multi. Just a note in case anyone else tries it, or in case it actually matters for the multi @Apocalypse. In MAME they list two of the program roms as "epr-14306.ic7" and "epr-14280.ic6". The rom packs out there have the files listed as such. Well, those are backwards. epr-14280 is actually ic7, and goes on a 27c1024. epr-14306 is actually ic6, and goes on an am27c100. It goofed me up until I found a pcb photo and realized they were backwards:


      multis: cps* ttx2 gnet f3 mvs sega st-v/16b/24/c2/naomi(netboot) sys2x6 m72
      cabs: sega blast city x2 | taito vewlix c + egret ii
      links: klov/vaps games list | custom fight sticks
      projects: some conversions, some repairs
    • @nem

      12x 27c801 for gfx
      2x 27c1024 for program
      2x 27c100 for program (oddball make sure you can write these)
      3x 27c040 for I think sound data
      1x 27c2001 for probably sound cpu

      Should be easy looking at that photo to figure out which goes where. Don't forget to set the jumpers!
      multis: cps* ttx2 gnet f3 mvs sega st-v/16b/24/c2/naomi(netboot) sys2x6 m72
      cabs: sega blast city x2 | taito vewlix c + egret ii
      links: klov/vaps games list | custom fight sticks
      projects: some conversions, some repairs
    • nem wrote:

      Wow, I wasn't expecting that many different chips. Many thanks for the list, time to start ordering.
      At least they're all socketed

      @nem are you sure that game uses the same rom board as Spider-Man? Check out the photo!
      multis: cps* ttx2 gnet f3 mvs sega st-v/16b/24/c2/naomi(netboot) sys2x6 m72
      cabs: sega blast city x2 | taito vewlix c + egret ii
      links: klov/vaps games list | custom fight sticks
      projects: some conversions, some repairs