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DrasticDS_nx

NaGaa95

A native wrapper/port of the DraStic DS emulator for Nintendo Switch, bundling the Android core, renderers, and shaders into a single NRO file that requires user-provided BIOS and games.

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License

MIT

Last updated

2026-07-27

AI repository intelligence
FR-AI / ANALYSIS

Why it is worth attention

It brings full-featured DS emulation to Switch with unique features like custom shader support, Vulkan low-latency mode, LSFG frame generation, and native integration such as HOME menu shortcuts and multi-library folder support.

Who it is for

  • Switch homebrew users wanting DS emulation
  • Emulation enthusiasts seeking high compatibility
  • Developers interested in porting ARM64 Android code to Switch
  • Retro gamers looking for portable DS play

Use cases

  • Playing Nintendo DS games on a Switch
  • Enhancing visuals with custom shaders and filters
  • Using Slot-2 accessories like GBA cartridges or rumble packs
  • Utilizing microphone input via external headset for DS games that require it

Strengths

  • Single NRO bundles core, renderers, shaders, and database
  • Supports both OpenGL and Vulkan with low-latency Vulkan mode
  • Includes 17 ready-to-use custom shaders from jdgleaver's collection
  • Allows multiple library folders (SD, USB, SMB) and HOME-menu shortcuts

Considerations

  • Requires user-supplied BIOS/firmware files (legal necessity)
  • Cannot run in applet/album mode; needs full memory and JIT services
  • Vulkan custom shaders need manual SPIR-V compilation with glslangValidator
  • LSFG frame generation requires external Lossless.dll and adds latency

README quick start

Drastic DS · Switch Port

A native wrapper/port of Drastic DS Emulator to the Nintendo Switch. It loads the original Android ARM64 emulator core libdrastic_arm64.so, patches it, and runs it inside a minimal Android-like environment natively.

Everything ships as a single DrasticDS.nro: it bundles the build-supplied Drastic core, game database and cheat table, both renderer backends (OpenGL + Vulkan/NVK), 17 ready-to-use custom shaders, and an SDL cover-art launcher. Nintendo DS BIOS and firmware are never packed into the NRO.

How to install

  1. Copy DrasticDS.nro into /switch/ on your SD card.
  2. Copy your own Nintendo DS system dumps into /switch/drastic/system/:
    • nds_bios_arm7.bin — 16 KiB ARM7 BIOS.
    • nds_bios_arm9.bin — 4 KiB ARM9 BIOS.
    • nds_firmware.bin — 256 KiB firmware.
  3. Put legally obtained .nds, .zip, or .rar games in /switch/drastic/games/, or add another SD, USB, or SMB library folder from Settings > Library & storage.

The launcher creates the rest of the folder tree and extracts the selected renderer and bundled application resources on demand:

/switch/DrasticDS.nro
/switch/drastic/
  .emu/                   .png)
  forwarders/              Controller**.

### Microphone input

Choose **Settings > Audio > Microphone source** before launching a game, or
change it at runtime from **Audio, input & motion** in the in-game menu.
**Simulated noise** retains the microphone hotkey for games that only require
blowing. **External microphone** captures real audio from a CTIA-compatible
headset connected to the 3.5 mm jack or a compatible USB audio input. Attached
USB inputs are preferred automatically, and reconnecting or unplugging a
device is handled while the game is running. Bluetooth microphone input is not
supported by Nintendo Switch.

### Slot-2 accessories

Choose the accessory before launching a game under
**Settings > Gameplay / Features > Slot-2 accessory**. The complete native
Drastic set is available: None, GBA Cart, SRAM Cart, Rumble Pack, Motion Pack
(Official), and Motion Pack (Homebrew).

For GBA Cart, put the GBA ROM and its raw cartridge save in
`/switch/drastic/slot2/`. Name them after the DS ROM (for example,
`Pokemon Platinum.gba` and `Pokemon Platinum.sav` for
`Pokemon Platinum.nds`). `slot2_gamepak.gba` and `slot2_gamepak.sav` can be
used as the shared fallback pair.

Description

Port of Drastic DS for Switch.

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