ROM Hack NES VC Custom Download Play?

Damin72

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I remeber a video, where guy create a custom VC Download Play and... I don't hear any news about that. Can we make a custom NES VC with multyplayer or not?

 
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smartperson

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Hey I chatted with ihaveamac, and he shared the secret with me. I might eventually make a tutorial; I'm happy to collaborate on that with someone else.

Here's what you need to know. I assume you have knowledge and experience with manual NES VC injections, and not just the one-step Windows tool:
  • You have to use a DLP NES VC CIA as a starting point. I used Ice Climber. We'll call it the Main CIA.
  • The Main CIA has 3 partitions:
    • PART0 is the main game (CXI)
    • PART1 is the manual (CFA)
    • PART2 is the DLP partition (CFA)
  • The DLP partition has just one file in its romfs, which is a CIA file, we'll call it the DLP CIA
  • DLP CIA has just one partition:
    • DLP CIA PART0 is the game (CXI)
    • This PART0 can be identical to the PART0 of the main CIA
  • DLP CIA must be encrypted using a utility like Decrypt9WIP.
    • It gets installed to the client's NAND, and the system requires all CIAs on the NAND to be encrypted. If you don't do this you will get a black screen on the client.
  • Everything else is managed the same way as single-player NES VC injection.
    • ctrtool and makerom are incredible utilities.
    • Make sure you modify the ROM's first 16 bytes.
    • Modify the banners and such to your heart's content.
Sadly, this process is labor-intensive. Since Decrypt9WIP has to be run on the console, only parts of it can be automated. I have used this technique to make DLP-enabled versions of Mendel Palace and Contra with great success.

edit: This was a very confusing description, so here is a diagram.
NES%20VC%20DLP%20Diagram.png
 
Last edited by smartperson,

Ordim3n

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Hey I chatted with ihaveamac, and I found the secret. I might eventually make a tutorial; I'm happy to collaborate on that with someone else.

Here's what you need to know. I assume you have knowledge and experience with manual NES VC injections, and not just the one-step Windows tool:
  • You have to use a DLP NES VC CIA as a starting point.
  • That CIA has 3 partitions:
  • PART0 is the main game (CXI), PART1 is the manual
It isn't really a secret, but yea.... I know how because I asked Ihaveamac too
 
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I noticed this with other titles (Mario Kart 7) I saw a folder when I extracted a .cia of Ice Climber/MK7 there is a folder that says DownloadPlay and there is a cia in that folder, how can you inject a rom into that .cia? Is there a tool or a manual conversion with a tutorial? Please respond.
 

Retro_Mod_Gamer

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I've been working really hard to get this to work, anybody able to help with a tutorial? I emailed ihaveamac but he hasn't gotten back to me. I really want to figure out how to do this for some multiplayer 3DS goodness. TMNT 2, the superior Japanese version of Rampart (translated to English now), and the Ducktales 2, 2 player hack.

Hey I chatted with ihaveamac, and he shared the secret with me. I might eventually make a tutorial; I'm happy to collaborate on that with someone else.

I've been fiddling with ctrtool and 3dstool in CMD and godmode9 on my 3ds and have made some progress but I'm a little lost and just not quite getting it.
 
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Retro_Mod_Gamer

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Could you send me the link, because i know if I try what they were talking about earlier in the thread than i will have to redo the proccess a lot (i will get it wrong)
Wow I'm so sorry I didn't get back to you, did you ever find it?

Here is the link:
https://gbatemp.net/threads/discussion-new-super-ultimate-injector-nsui.500376/

Also for anyone wondering, there's a thread started last week on "That ISO Site" where Multiplayer NES games for 3DS have been listed...
 

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