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Model 2 /3 Security hacks

My dumps are original, so protected, your game crashing is the protection kicking in.
 
Trol said:
My dumps are original, so protected, your game crashing is the protection kicking in.
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Ok thanks, i just wanted to be sure it was not on my end or my fault :)
Maybe one day we will see it. I'm totally unable to do so, i'm a soldering iron guy :D
 
Anyone have a picture of a dirt devls rom board?
I need to know which eproms I need.
 
Hi! :)

I have a crazy thing for my original Dead or Alive :whistling:

I forgot to put the security PCB back, the game works without WTF X/ ?
 
chacal231077 said:
Hi! :)

I have a crazy thing for my original Dead or Alive :whistling:

I forgot to put the security PCB back, the game works without WTF X/ ?
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it's common if in the case of failed protection check game doesn't hang at very beginning, and works like everything is OK, but became unplayable in one or another way later. iirc it was highly recommended by Sega to implement protection check this way.
perhaps DOA is one of such games?

add: and yes, DOA is one of those games, it does work without security PCB, for a while ;)

PS: it is also possible your security PCB is dead, but it was "repaired" by previous owner by reprogramming program ROMs with cracked game ver :)
 
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MetalliC said:
it's common if in the case of failed protection check game doesn't hang at very beginning, and works like everything is OK, but became unplayable in one or another way later. iirc it was highly recommended by Sega to implement protection check this way.
perhaps DOA is one of such games?

add: and yes, DOA is one of those games, it does work without security PCB, for a while ;)

PS: it is also possible your security PCB is dead, but it was "repaired" by previous owner by reprogramming program ROMs with cracked game ver :)
Click to expand...

Hi! :)

This is the one that Hikaru had for him in Japan
he sold it to me in 2008, he already had it long before selling it to me, I don't think the patches already existed between 1996 & 2008 in Japan
 
Trol said:
Try finishing the first match....-
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Hi! :)

So the big delirium the game without a security card the demo works great, and when the game works without the game crashes,

be at the character selection be at the first Get Ready Fight :D
 
Does anyone have any information on Daytona to the MAXX upgrade for Daytona USA (model 2), ro have you got a kit in your game that runs??

I have 2 original kits for this and i have also been trying to remake the security kit so more people could run it. But i am having various problems. History here

https://www.ukvac.com/forum/threads/daytona-to-the-maxx-recreating.89238

Basically the roms and the security kits i have seem to work as per MAMES checks at initial boot, but the game on my real hardware doesnt run attract it just stays on the config screen.

This is what my original kit looks like, so it would be interesting to see anyone else's kit to and what the game hardware you have it running in.

IMG_2895.jpg
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Interesting. Since it's just in a rom socket I'd bet it changes up the data output on multiple reads. You'd probably be able to reverse engineering it from the emulated output of that address space in mame
 
@mypinballs why does your repro has a clock if the blue original doesn't have it? Also I see several resistors that your clone does not have. Are these pull-ups?
Do I understand right that you are "reversing" the PIC based on what's in MAME? I have a better idea, why don't extract the code of the PIC?
 
Darksoft said:
@mypinballs why does your repro has a clock if the blue original doesn't have it? Also I see several resistors that your clone does not have. Are these pull-ups?
Do I understand right that you are "reversing" the PIC based on what's in MAME? I have a better idea, why don't extract the code of the PIC?
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Yeah, i'm wanting to know if anyone else has an original kit running as these original kits do not work in my original upright.

I know i have some changes to make on my version boards, now i have an original one to look at, as I started my project before i thought i would ever find an original kit (using MAME source as a guide), but if the originals can't be proved to work fine on original hardware, then i'm a bit screwed as to whats verified correct. Getting the pic code off the original is certainly an option to investigate if i can get them to work.
 
Can we please make this wonderful 2/3 library drm free. I hear it is simple & a good chunk is already public...
 
Hello all, does anyone have the "patched" ICs for Zero gunner on model 2B? The site on the first post doesn't work anymore
 
Well bad news is link for model2/3 goes to a youtube video that doesn't exist anymore..
 
I don't think the decrypted ROMs were ever released the video just showed that they existed and worked so AMB could sell them to you.

I've been poking around a bit with AI for some of this work, you do need to hold it's hand and be specific but it produces some interesting results that at least can set you in the right direction.

here's a good example of getting Claude's take on this problem: https://claude.ai/share/35eed612-b857-4e08-8fdd-06fdb1760ebb
 
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