Misc Extracted Virtual Console GBA rom hashes don't match

[Leatherhide]

I'm using CFW on my New 3DS and I ripped some virtual console GBA roms by following GlazedHex rom dumping guide. None of the rom hashes are known in the Dat-o-matic database however. Is there a fix for this?

 

[CoolMe]

Is the ripping method known to work? I mean unless they the original rom data inside the VC releases, i don't think it's supposed to work.

 

[Leatherhide]

Is the ripping method known to work? I mean unless they the original rom data inside the VC releases, i don't think it's supposed to work.

The games boot up in an emulator so they work but I think maybe Nintendo put extra data in the rom.

 

[SylverReZ]

The games boot up in an emulator so they work but I think maybe Nintendo put extra data in the rom.

Try comparing the data in the ROM that you just ripped with an already valid one.

 

[CoolMe]

Try comparing the data in the ROM that you just ripped with an already valid one.

If you mean by data the hash, i think that's what he did.

 

[SylverReZ]

If you mean by data the hash, i think that's what he did.

Comparing the data through a hex editor.

 

[godreborn]

I wouldn't put too much stock in this if the game works. you can hex compare the files or even better would be hashtab, where it will tell you the checkum of the game.

 

[Leatherhide]

I opened the extracted Mario Kart Super Circuit in a hex editor as well as my ripped cart rom and they appear to be identical except for at the very end. It looks like Nintendo added a footer. I deleted the data at the end in the hex editor so it matches the rom I ripped from the cart and saved it as a new file, yet when I calculate the hash, it has changed but does not match the rom from my cart.

The start and end look exactly the same in the hex view now. Maybe there is something different anywhere between the beginning and end of the data but I don't know how to be sure.

 

[godreborn]

I opened the extracted Mario Kart Super Circuit in a hex editor as well as my ripped cart rom and they appear to be identical except for at the very end. It looks like Nintendo added a footer. I deleted the data at the end in the hex editor so it matches the rom I ripped from the cart and saved it as a new file, yet when I calculate the hash, it has changed but does not match the rom from my cart.

The start and end look exactly the same in the hex view now. Maybe there is something different anywhere between the beginning and end of the data but I don't know how to be sure.

you can do a hex compare in HxD.

Post automatically merged: Dec 17, 2022

 

[Leatherhide]

you can do a hex compare in HxD.

Post automatically merged: Dec 17, 2022

View attachment 343218

Thanks. I just did exactly that and discovered parts of the rom are indeed different. I guess the virtual console GBA roms are really different.

 

[godreborn]

Thanks. I just did exactly that and discovered parts of the rom are indeed different. I guess the virtual console GBA roms are really different.

check if it works. they don't necessarily have to be the same checksum as a lot of emulators ignore it, even if they sad bad checksum, they'll still boot. I was able to fix all nes/snes games for my minis, even though it's not needed, but patched final fantasy v had a bad checksum, since it was patched to English, but it didn't prevent the game from booting.

 

[Leatherhide]

check if it works. they don't necessarily have to be the same checksum as a lot of emulators ignore it, even if they sad bad checksum, they'll still boot. I was able to fix all nes/snes games for my minis, even though it's not needed, but patched final fantasy v had a bad checksum, since it was patched to English, but it didn't prevent the game from booting.

I can confirm that they boot in emulator. It's just that I love building my own personal legitimate rom archive, so I really want my roms to be bit perfect copies. Aside from GBA, I also dumped the GB game Pokemon Red Version and its hash matches that of the cartridge.

 

[godreborn]

I can confirm that they boot in emulator. It's just that I love building my own personal legitimate rom archive, so I really want my roms to be bit perfect copies. Aside from GBA, I also dumped the GB game Pokemon Red Version and its hash matches that of the cartridge.

not sure. is the gba version the one with the .m archive? that may be the wiiu, just can't remember, but I have extracted a rom, and it worked fine in an emulator.

 

[CoolMe]

Well, the VC versions have dim lighting in comparison to the original versions, the data/info has to be written within the rom..

 

[godreborn]

Well, the VC versions have dim lighting in comparison to the original versions, the data/info has to be written within the rom..

iirc, the dim lighting is an xml file. there's a tutorial on here somewhere, probably from @Vague Rant . you can increase the brightness, but afaik or remember you have to decrypt the .m file to modify it. I think the rom is separate, and written with numbers or something. I did this once or twice.

Post automatically merged: Dec 17, 2022

here it is:

https://gbatemp.net/threads/remove-the-dark-filter-from-wii-u-gba-vc-titles.601290/