mntorankusu

mntorankusu / N64-SwapDumper

Public

Cartridge dumper for N64 games, requiring only a flash cart.

42
1
69% credibility
Found May 30, 2026 at 42 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
C
AI Summary

This is a homebrew tool for Nintendo 64 that lets you copy game cartridges using a flash cart. You boot from the flash cart, hot-swap to another cartridge while the system is running, and the tool copies the game data and save files to your flash cart's memory card. It can also restore old saves or erase them. The project is inspired by similar homebrew tools and includes clear warnings about the risks of switching cartridges while the console is powered on.

How It Works

1
📜 You hear about backing up your game collection

A friend tells you about a tool that can copy your N64 game cartridges using just a flash cart, so you can preserve your saves and ROMs.

2
💾 You prepare your flash cart

You put your flash cart in the N64 and create folders on its memory card where your backups will be saved.

3
🎮 You launch the backup tool

The screen shows simple options: copy your game's data, restore an old save, or erase a save you no longer need.

4
You choose what to save
📀
Dump game data

Copy the entire game to your memory card

💾
Dump save file

Copy just your saved games

🔄
Restore a save

Put an old backup save back onto your cartridge

5
🔄 You swap cartridges when prompted

The screen tells you to switch to your regular cartridge, and later tells you to switch back to the flash cart so the data can be saved.

6
⏳ You watch the progress

Small chunks of data appear on screen as each piece is copied over, with a percentage showing how much is done.

✅ Your backup is safe on the memory card

Everything is copied and ready. You can now power off knowing your game data is safely saved on your flash cart.

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AI-Generated Review

What is N64-SwapDumper?

N64-SwapDumper is a cartridge dumper for Nintendo 64 games that runs on a flash cart. You boot from the flash cart, hot-swap to your target cartridge, and dump ROM and save data directly to the SD card. It handles the tedious multi-swap process for large ROMs by buffering chunks and prompting you to swap back when memory fills up. The tool also supports save restoration and deletion. Built in C using libdragon, it leverages the N64's joybus protocol for accessory communication.

Why is it gaining traction?

The N64 homebrew scene has limited options for cartridge dumping, and most require specialized hardware beyond a flash cart. This project lowers the barrier by working with just a SummerCart and the swap technique. The interface is straightforward: press A to dump, C-up to restore saves, Z-down to clear them. It auto-detects ROM size and includes verification. The code builds on sharksaver64, showing it leverages proven work in this space.

Who should use this?

N64 ROM preservation enthusiasts, homebrew developers backing up their cartridge collections, and retro gaming archivists who want to digitize their library without buying expensive commercial dumpers. If you have a flash cart and want to back up your cartridges, this is the tool. Not for casual users -- you need to be comfortable with the hot-swapping process and its risks.

Verdict

N64-SwapDumper fills a real gap in the N64 homebrew ecosystem with a practical, no-frills approach to cartridge dumping. At 42 stars, it is a niche tool with a small but engaged community. The credibility score of 0.699999988079071% reflects its early-stage status, but the clear documentation and focused feature set make it worth trying if you have the hardware. Just understand the hot-swapping risks before you start.

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