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Hopefully this isn't considered as warez discussion.

Long story.... I have

- Japanese PC Engine Duo
- China clone Turbo Everdrive v1
- A burned copy of the Fan Translation of Xak Gaiden (Frey's Magical Adventure)

Basically the fan translation asks for a modified system card 3 bios.

But I also heard, that using a Turbo Everdrive v2 and v3 on a PC Engine Duo can cause bus conflicts due the additional RAM thing.

But then the Turbo Everdrive v1 doesn't have the additional RAM that would cause the conflict.

So in theory if I load the modified syscard3.pce on a Turbo Everdrive v1, there would be no conflict, PC Engine Duo runs it on its own RAM.

And this worked. So the question is, is what I did dangerous?

PS. I tried combining the patch for syscard3 for Everdrives, and then put the Frey bios patch after.... This DID NOT go well.

Nah, it's not dangerous - booting with a modified system card 3 BIOS ROM with a flashcart is perfectly fine, you have nothing to worry about.

That makes about 2 fan localizations that use that idea to help provide easier 8x16 font support. But if they learned how to use ChatGPT they could eventually get rid of that dependency like TruMisery is doing.

Anyway, welcome to the forum.

Thanks. I swore I had an account before (I asked about repair/refurbish the first PC Engine Duo I got. :)