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The Emularity: An Example Computer Loader
For use with The Emularity, downloadable at
SIMPLE STEPS for trying an emulated computer ("Doom (shareware
edition)" for the PC).
* Check out this repository in your browser-accessible directory;
this file as well as es6-promise.js, browserfs.min.js and loader.js
are required. The logo and images directories are optional, but the
splash screen looks quite a lot better when they're available.
* Use "git annex get emulators/em-dosbox/dosbox-sync.js.gz" to download
the compiled emulator; if you don't have git-annex you can download
it from IA manually.
* Use "git annex get emulators/em-dosbox/dosbox-sync.mem.gz" to
download the compiled emulator's memory initialization file; if you
don't have git-annex you can download it from IA manually.
* Use "git annex get examples/"
to download the Doom v1.9 binaries; these can be downloaded from IA manually.
* Visit your example_dosbox.html file with a modern
Javascript-capable browser.
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>example dos game</title>
<canvas id="canvas" style="width: 50%; height: 50%; display: block; margin: 0 auto;"/>
<script type="text/javascript" src="es6-promise.js"></script>
<script type="text/javascript" src="browserfs.min.js"></script>
<script type="text/javascript" src="loader.js"></script>
<script type="text/javascript">
var emulator = new Emulator(document.querySelector("#canvas"),
new DosBoxLoader(DosBoxLoader.emulatorJS("emulators/em-dosbox/dosbox-sync.js"),
DosBoxLoader.nativeResolution(640, 480),
DosBoxLoader.fetchFile("Game File",
emulator.start({ waitAfterDownloading: true });
function locateAdditionalFiles(filename) {
if (filename === "dosbox.html.mem") {
return "emulators/em-dosbox/dosbox-sync.mem";
return "emulators/em-dosbox/"+ filename;