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PostPosted: Thu Nov 17, 2016 11:46 pm 
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Is there any information on the internet that cartridge producers can use to implement a multi-region lockout chip that switches the regions when you press the Reset button? I know that RetroUSB uses them, but is the information how to do this open to the public, so that people who know how to build the cartridges can implement it?

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PostPosted: Thu Nov 17, 2016 11:58 pm 
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The CIC clones are made with a programmable microcontroller.

KRIKZZ published some source code for the one he uses:
viewtopic.php?f=9&t=9797

Some older information here:
http://forums.nesdev.com/viewtopic.php?t=1219
(most of the good stuff is on the very last page of that long thread)


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PostPosted: Fri Nov 18, 2016 1:37 am 
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Thanks. I will forward this to my publisher after reading it myself.

One more question: InfiniteNESLives uses a chip called Jim's Cool "JCIC". Is this one public as well? Or is it maybe already mentioned in the threads you linked?

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PostPosted: Fri Nov 18, 2016 1:50 am 
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jims cool used to be active here a few years ago, mostly talked about the CIC (for NES and SNES). I think he had his own implementation he called JCIC, and was probably freely available but I don't know where to find it at this point.

thefox also had written a C implementation of a CIC clone as a file called "Tengen.c", but I don't know if that is availble anymore either (the old links are dead, and it's not listed at his current website).


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PostPosted: Fri Nov 18, 2016 2:11 am 
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rainwarrior wrote:
thefox also had written a C implementation of a CIC clone as a file called "Tengen.c", but I don't know if that is availble anymore either (the old links are dead, and it's not listed at his current website).

https://web.archive.org/web/20140920232 ... i/Tengen.c

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German Retro Gamer article: http://i67.tinypic.com/345o108.jpg


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PostPosted: Fri Nov 18, 2016 2:20 am 
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Ahh, bless the internet archive. Thanks.


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PostPosted: Fri Nov 18, 2016 4:48 am 
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Wow, hard to believe it has been ten years already.

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