ROM Hack [GB(C)] Injection with the New Generation of VC

[Pandaxclone2]

Definitely some interest. It's a shame that progress died out seeing as link cable stuff is pretty much last on the list of things we have to code into a GBC emulator for the 3DS; at the very least I was hoping in the days before RBY VC came out that we'd at least learn enough to reverse engineer our own, but turns out it's not as simple as that.

 

[miladiir]

Hey guys. I have a question regarding the injection of Savefiles.

I successfully injected a save file from my original Red and Yellow Rom into the eshop versions of those games with svdt. However I have trouble getting the same method to work with pokemon gold.
I can extract the sav.dat with svdt no problem. The flash save i get with vba is just a few bytes short, so I add a couple FF's to the file and save.
The extracted save has the exact same size as my modified save. I then reinject the save file with svdt. However when I open the game again, It just loads the game as if I didnt do anything.
I noticed that while the Yellow save only included a sav.dat the GBC games I tried this with also had rsm1.dat (or similiar) files. Deleting those resulted in corrupted saves.
Any advise?

 

[Asia81]

I did it with silver and crystal, and it worked as expected.
Maybe you did something wrong
I injected my ~90% save from VBA to injected rom, on old generation of VC

 

[miladiir]

I did it with silver and crystal, and it worked as expected.
Maybe you did something wrong
I injected my ~90% save from VBA to injected rom, on old generation of VC

Does the VC you used offer savestates? Like not actual saving ingame but a savestate in the VC? I think thats messing it up for me.

 

[MushGuy]

So we managed to decrypt and extract the 2016 release of Pokémon Red.
I managed to inject Pokémon Crystal (French) instead and it's working.

So now I'm guessing things:
1) Inject several GB(C), like Gold/Silver/Crystal, and try local trade.
2) Try to merge the OldVC with the NewVC. Because the new can't use the insta-save (or perma-save, I don't know the english name because I play in French). So save in the VC Menu, if you see what I mean.

Who have x2 3DS and ability to run run CIAs for try the local trade with injected rom into the NewVC?

Edit: Nevermind

 

[Ryccardo]

The flash save i get with vba is just a few bytes short, so I add a couple FF's to the file and save.
The extracted save has the exact same size as my modified save.

Don't use the save directly created by the emulator as it includes RTC offset info, use (in VisualBoyAdvance) File/Export Battery

 

[miladiir]

hat size the save is supposed

Don't use the save directly created by the emulator as it includes RTC offset info, use (in VisualBoyAdvance) File/Export Battery

Yep, I exported as flash save to no avail.

 

[shahanshah]

Not gonna read through 24 pages of posts, can I play Pokémon Crystal (or other GB games) with multiplayer on the 3DS now, and if not, is anyone working on this?

 

[Ryccardo]

Not gonna read through 24 pages of posts, can I play Pokémon Crystal (or other GB games) with multiplayer on the 3DS now, and if not, is anyone working on this?

It's technically possible but netcode offsets have to be found and programmed into the patch files (of which there's no decent documentation, at least for this purpose)

 

[tommikinder]

There is now a Gen 2 graphics hack for Pokemon Yellow released last month:
http://www.pokecommunity.com/showthread.php?t=372328
I wonder if this would work better than the Red\Blue injects?

 

[Deleted member 370283]

So today, just for a bit of fun (since I was feeling slightly burnt out from another unrelated project) I decided to try to finally overcome the inevitable and make a patch for Crystal. The patch isn't fully complete yet, but here's what I have working:

Typically, if there is no Link Cable connected with a player on the other end, the game will simply prompt you that "Your friend is not ready." Here, I am actually able to enter both the Cable Club Colosseum and Trade Center with no problem. The only issue is that the VC doesn't take over and have you connect to another player! It just mirrors whatever you do. (For example, in a battle, both Pokemon would be exactly the same and would use the same moves)
This is good progress, and I still have more to add to the patches. Fingers crossed, guys!

 

[Deleted member 370283]

Apologies for the shaky video.

EDIT: I should also mention that the save being used is one off of the internet, so the textbox style, name, and etc is not mine.

 

[Asdolo]

Apologies for the shaky video.

EDIT: I should also mention that the save being used is one off of the internet, so the textbox style, name, and etc is not mine.

Awesome work!!! I think there's much trial and error on this job, plus the time of re-building every CIA you make (at least you're using Hans)...

So, right now, can you trade Crystal-to-Crystal?

 

[Deleted member 370283]

All features (Trading, battling, and I guess the time capsule) are usable.
Right now, I just need some playtesters who have two homebrew enabled 3DSs and the ability to install CIAs to make sure this fully works. (I guess if you can use HANS, that works too)

 

[Traiver]

Here dude, I have 2 3DS and I want to be the tester for you.

 

[Deleted member 370283]

PMed you. Anyone else who is interested in testing, please let me know here. I'll add you to the conversation.

 

[darkalex004]

PMed you. Anyone else who is interested in testing, please let me know here. I'll add you to the conversation.

I also want to help

 

[Asdolo]

PMed you. Anyone else who is interested in testing, please let me know here. I'll add you to the conversation.

I think it'll just work with english Crystal, no?

 

[Deleted member 370283]

I also want to help

Do you meet the requirements? (2 3DSs that can install CIAs)

I think it'll just work with english Crystal, no?

For right now, yes. Once I finalize the patch completely, I'll look into converting it for other languages.

 

[darkalex004]

Do you meet the requirements? (2 3DSs that can install CIAs)

For right now, yes. Once I finalize the patch completely, I'll look into converting it for other languages.

Yeah, I have 4 OLD 3DS, 1 New 3DS and 1 2DS (All of them can install CIAs)