That is meant as a way to detect that the intended ROM bank is swapped in. It will only replace the Data if the value in the ROM matches the Compare value. There are "8-digit" codes which have a Compare value. I think the general idea is that the Game Genie watches the Address pins on the cart, and when it matches one of the addresses encoded by the user-entered codes, it replaces whatever was on the Data pins with the Data value in the code. Ice Climber to see if it's the same as you found in the regular game. Sure, you could find codes in magazines that could do wacky things, but it was great that you didn't even need it if you bought a new game.Īnyway, I should investigate the Game Genie further. Do something, tell it what changed, eventually it finds the address to mess with. I also used to have a Pro Action Replay for the SNES, which was better for two reasons: it acted as a region converter (which for someone with a PAL SNES was the main reason to get one), and you didn't need a code book: you make the cheats yourself in the same way the cheats in FCEUX works. I have a Game Genie for NES but never used it that much (as I said, I'm not sure about them). I suppose they both achieve the same results in the end, sort of. It patches ROM addresses (replaces data as it passes through the cart). ![]() Game Genie is the reverse of what you describe Psyklax.
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