How do I redirect code in a expanded NES rom?

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Main - ROM Hacking - How do I redirect code in a expanded NES rom?

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Hamtaro126

Posted on 10-01-07 03:14 AM

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Cheep-cheep
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I am using Nflate and SMB3, But for some reason, There is no use of it yet because I do not know how to make the program code redirect to the expanded ROM space without trouble!

Do I have to do this?:

LDA $#0x ; <----- Bank where the Expanded ROM is kept
JSR (or JMP) $xxxx ; Redirect to the expanded ROM space

Or do I have to do it some other way?

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smkdan

Posted on 10-01-07 05:51 AM

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I suppose by expanding the ROM you added extra banks to it. To switch them, look up the info on the mapper it uses (MMC3?) and see how it switches banks. You'd write a bank # and whatever other details to the mapper from program in an area that isn't to be switched. That's all I can say. There's mapper info on RHDN if you need it.

Main - ROM Hacking - How do I redirect code in a expanded NES rom?

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