I wanted to just get better at TypeScript at first, but then I went down a rabbit hole and saw, experienced, and created something much more than I expected...
A Nintendo Entertainment System and Famicom emulator written in TypeScript for web browsers.
This emulator is on-going development and is my main "passion project" when it comes to just implementing whatever I have learned with regards to web development, JS, etc.
- Fully playable through a web browser
- Keyboard and XBOX 360 control support.
- NROM, MMC1, MMC3 and AOROM games supported.
- All playable through the latest versions of Chrome, "new" Microsoft Edge, and Firefox
- Save states as JSON files, and loadable once game has been loaded.
- Currently preloaded with several games.
- Mario Bros.
- Donkey Kong
- Tetris
- Super Mario Bros.
- Super Mario Bros. 3
- The Legend of Zelda
- Final Fantasy
- Mega Man
- Mega Man 2
- Silkworm
- Teenage Mutant Ninja Turtles
- Battletoads
- Svae state compression
- Customizable control mapping
- MMC5, and Sunsoft mappers support
- Network play
- NES ROM file loading for faster delivery of emulator, rather than preloading ROM files as JSON
- Full debugging suite written in React
A computer, preferably something beefy. I started this project on a trusty 2014 13" Macbook Pro with a dual core Intel Core i7 4578U/16 GB RAM and eventually upgraded to a 2019 13" Macbook Pro with a quad core Intel Core i7 8569U/16 GB RAM.
For both systems, I was able to get around 60 fps just fine. My wife's Dell XPS 13 from 2018 was able to average 60fps NROM games, and dipping down to 20-30 fps for MMC3 games.
Fairly easy, just clone the project
git clone https://github.com/urbanspr1nter/nesthing.git
Then navigate to the ./src/nes directory and do:
npm install
Build with webpack and compile C code to WASM within the same directory:
npm run build
The distribution files are within dist and just open ./src/index.html to demo.
If you are too lazy to clone and build the project, feel free to check out the live demo here:
NesThing - http://rogerngo.com/nesthing
npm run test
- The CPU currently passes all
nestestROM tests. :)
If you have any questions, feel free to submit a question through email, urbanspr1nter@gmail.com, or write a pull request, or somthing. :)
This emulator could not have been created without being heavily based on fogleman/nes, an NES emulator written in Go.
Through lots of nights, I mainly used this emulator as a reference whenever I got stuck. I am deeply grateful for it to have been created.