Repairing a bad rom dump
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Repairing a bad rom dump
I have a copy of Fire Emblem Gaiden that is being stubborn. The Kazzo dumper dumps the CHR just fine, but, according to BootGod's Database, the CR32 number for the PRG is always off. Once the number was especially close to correct, and the ROM loads properly in FCEUX and Nestopia; however, once you press start to get past the title screen, the game freezes. Is there a way to repair the ROM so that it's completely playable?
Re: Repairing a bad rom dump
Can you compare your PRG dump to a known good dump from the internet and qualify how the two dumps differ? It might be easier to figure out how to fix the Kazoo script if we know where things are going wrong.
Re: Repairing a bad rom dump
I don't think that similar hash numbers necessarily mean that the hashed data is similar... By design, this is not how hashing algorithms work.werewolfslayr925 wrote:Once the number was especially close to correct
Like lidnariq said, the only way to know exactly what's wrong is to compare your data against a known good dump.Is there a way to repair the ROM so that it's completely playable?
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Re: Repairing a bad rom dump
Okay, that's news to me. What's the method for comparing what I have to a good dump?
Re: Repairing a bad rom dump
There's a hex editor called windhex that can do a byte by byte comparison, and tell you which bytes are different.
http://www.romhacking.net/utilities/291/
Edit, or was it HxD ?
http://www.romhacking.net/utilities/291/
Edit, or was it HxD ?
nesdoug.com -- blog/tutorial on programming for the NES
Re: Repairing a bad rom dump
HxD can do it.
On Windows command line you can do fc /b file1.nes file2.nes.
On Windows command line you can do fc /b file1.nes file2.nes.
Download STREEMERZ for NES from fauxgame.com! — Some other stuff I've done: fo.aspekt.fi
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Re: Repairing a bad rom dump
I'll see what I can do as far as comparing it to a good copy of the game and post here when I find out something new. Thanks for the tips.