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I don't know about that, but a game writing to the ROM (and thus switching RAM bank when there's no need to) wasn't something I was pleased with, so I'm glad we could figure this out.I don't know if this has anything to do with this but I learned from someone in the InsideGadgets Discord (website where you get GBxCart RW and other fancy stuff) that AliExpress sells some cartridges that are hacked in a way that it indeed saves (and thus writes) inside the ROM rather than with a battery. Especially PKMN Crystal cartridges from AliExpress have this issue.
I learned that the hard way while looking for "donor" carts for a homebrew game I wanted to flash on it. Due to the clear blue shell I went for a few Crystal carts from Ali only to learn that I cannot flash a "normal" game on them and by normal I mean a game that saves "normally" (for example the "real" PKMN Crystal). So my homebrew game wasn't able to create a savegame on that cartridge. Instead I had to use the "Perfect Dark" carts on Ali since they (as that person from the Discord told me) are one of the few Ali carts that actually come with a battery and are MBC5 and voila: My game was able to save on them. So I just swapped the PCB with my Ali Crystal to have the clear blue shell and this is how I learned another lesson in the process.
The issue with those hacked "I have into my own ROM" carts from Ali is, that when you accidentally turn off the game while it saves, not only the save game is lost but also the rom itself is corrupted and the cart becomes useless.
(Reflashing with GBxCart RW should still work though)
Plus, it inadvertedly led me to realize the game was loading corrupted graphics at $9C00 on level 3-2 only, which I took the opportunity to correct (no one had complained so far but I know some people on the Internet can be very picky with that kind of things because it looks a bit "amateurish"), so now everyone should be happy!
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BTW, please leave some reviews if you liked the patch, that would be very much appreciated!











