Pro tip: Keep your ROMs in a separate folder and point the emulator to a dedicated BIOS folder (more on that below).
If you'd like, I can:
To set up your nand.bin with melonDS, you must provide specific system files to enable DSi Mode, which allows you to run DSiWare and access the DSi Home Menu. 1. Required System Files
Place these files in a single folder (e.g., /DSi_Files/). For standalone melonDS, ensure they are named exactly as follows: bios7.bin (ARM7 BIOS) bios9.bin (ARM9 BIOS) firmware.bin (DSi Firmware) nand.bin (The DSi NAND dump) 2. Configure melonDS Settings Open melonDS and follow these steps to link your files: Open Emu Settings: Go to Config > Emu settings.
Switch to DSi Mode: Select the DSi-mode tab and check Enable DSi mode.
Link Your Files: Under the DSi settings section, browse and select the paths for each of the four files listed above.
Boot Mode: Ensure Boot game directly is unchecked if you want to see the DSi startup animation and Home Menu. 3. Managing DSiWare on your NAND
Once the NAND is linked, you can install digital games (DSiWare) directly to it: Open Title Manager: Navigate to System > Manage DSi titles.
Note: This option may be greyed out if the emulator is currently running a game. Go to System > Stop first. nandbin melonds top
Import Games: Click Import title... and select your DSiWare ROM (.nds or .app).
Boot to Menu: Go to System > Boot firmware to see your newly installed games as "presents" on the DSi Home Menu. 4. Important Troubleshooting
The nand.bin file is the essential "internal storage" image required by the melonDS emulator to run in DSi Mode. Without this file, the emulator cannot access the DSi Menu, DSiWare, or the enhanced features of the Nintendo DSi console. What is the NAND.bin File?
In the context of melonDS, nand.bin is a complete dump of a Nintendo DSi's internal flash memory. It typically contains: The DSi Home Menu and system settings.
Installed DSiWare and system applications (like the DSi Camera or Shop).
Console-specific encryption keys required for the emulator to decrypt and run DSi-exclusive content. How to Get Your NAND.bin
Because these files contain copyrighted Nintendo code and console-unique keys, they are not legally provided with the emulator. You must dump them from your own physical hardware:
Dumping from a DSi: Use tools like dumpTool on a DSi with custom firmware (like Unlaunch or HiyaCFW). Pro tip: Keep your ROMs in a separate
Output: After running the dumper, you will find a folder (often named DT######) on your SD card containing nand.bin.
Standalone Dumper: The melonDS team also provides a specific DSi BIOS/NAND/firmware dumper designed for maximum compatibility with the emulator. Setting Up DSi Mode in melonDS
Once you have your nand.bin, follow these steps to enable DSi emulation:
File Placement: Place nand.bin in your melonDS system folder alongside the required BIOS files (bios7.bin, bios9.bin) and firmware.
Note: For RetroArch's melonDS DS core, ensure files are named exactly as required (e.g., dsi_nand.bin). Emulator Configuration: Open melonDS and go to Config > Emu settings.
Select the DS-Mode tab and check "Enable Use external BIOS/firmware files".
Link the paths to your nand.bin, DSi BIOS, and DSi Firmware files.
Booting: To access the DSi interface, go to File > Boot firmware. To set up your nand
Here’s a write-up for Nandbin’s MelonDS Top—a custom top-screen layout or configuration file for the MelonDS Nintendo DS emulator, often shared by the YouTuber/streamer 낸드빈 (Nandbin).
Before we dive into the "Top" configurations, let’s establish the baseline. melonDS is an open-source Nintendo DS emulator that prioritizes:
Unlike its competitor, DeSmuME, melonDS is lighter, faster, and more faithful to original hardware timings. But out of the box, it isn't perfect. That is where community experts like "NandBin" come in.
Some ROM hacks or homebrew applications attempt to swap screens or run "sideways." By booting from the firmware/NAND, melonDS ensures that the register states for the screens are initialized exactly as the hardware dictates. This prevents graphical glitches where a game might load on the wrong screen or appear rotated incorrectly. The "Top" screen setting in the firmware acts as the anchor for the entire visual experience.
The "top" melonDS experience can be ruined by crackling audio or laggy controls. Here are the hidden tweaks:
Warning: Do not exceed 2x speed. NandBin’s tests show that 200% overclock causes audio desync in GTA: Chinatown Wars.
Top tip from NandBin: Disable "Limit Framerate" on the secondary window to keep sync stable, then re-enable it once both games connect.
Once your Nandbin is configured perfectly, consider these advanced tweaks to reach the true "Top" tier:
For a long time, melonDS relied on separate bios7.bin, bios9.bin, and firmware.bin files for standard DS emulation. However, with the advancement of DSi support, the workflow has evolved.