A JavaScript NES emulator.
It's a library that works in both the browser and Node.js. The browser UI is available at https://github.com/bfirsh/jsnes-web.
For Node.js or Webpack:
$ npm install jsnes
(Or yarn add jsnes.)
In the browser, you can use unpkg:
<script type="text/javascript" src="https://unpkg.com/jsnes/dist/jsnes.min.js"></script>
// Initialize and set up outputs var nes = new jsnes.NES({ onFrame: function(frameBuffer) { // ... write frameBuffer to screen }, onAudioSample: function(left, right) { // ... play audio sample } }); // Load ROM data as a string or byte array nes.loadROM(romData); // Run frames at 60 fps, or as fast as you can. // You are responsible for reliable timing as best you can on your platform. nes.frame(); nes.frame(); // ... // Hook up whatever input device you have to the controller. nes.buttonDown(1, jsnes.Controller.BUTTON_A); nes.frame(); nes.buttonUp(1, jsnes.Controller.BUTTON_A); nes.frame(); // ...
To build a distribution:
$ yarn run build
This will create dist/jsnes.min.js.