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---
title: CHIP8Emu
layout: project
---
<h3>CHIP8Emu</h3>
<p>An emulator for CHIP-8 written in C++</p>
<h3>Try It</h3>
<div class="emscripten" id="status">Downloading...</div>
<progress value="0" max="100" id="progress" hidden=0></progress>
<canvas id="canvas" oncontextmenu="event.preventDefault()" tabindex=0></canvas>
<button class="chip8-button" id="1">1</button>
<button class="chip8-button" id="2">2</button>
<button class="chip8-button" id="3">3</button>
<button class="chip8-button" id="4">4</button>
<br>
<button class="chip8-button" id="q">Q</button>
<button class="chip8-button" id="w">W</button>
<button class="chip8-button" id="e">E</button>
<button class="chip8-button" id="r">R</button>
<br>
<button class="chip8-button" id="a">A</button>
<button class="chip8-button" id="s">S</button>
<button class="chip8-button" id="d">D</button>
<button class="chip8-button" id="f">F</button>
<br>
<button class="chip8-button" id="z">Z</button>
<button class="chip8-button" id="x">X</button>
<button class="chip8-button" id="c">C</button>
<button class="chip8-button" id="v">V</button>
<br>
<script type="text/javascript" src="module.js"></script>
<script async type="text/javascript" src="chip8emu.js"></script>
<script>
function sendKey(keyCode, eventType) {
var c = document.getElementById("canvas");
c.focus();
c.dispatchEvent(new KeyboardEvent(eventType, {'keyCode': keyCode}));
}
const KEYS = {
'1': 49,
'2': 50,
'3': 51,
'4': 52,
'q': 81,
'w': 87,
'e': 69,
'r': 82,
'a': 65,
's': 83,
'd': 68,
'f': 70,
'z': 90,
'x': 88,
'c': 67,
'v': 86
}
async function tap(e) {
sendKey(81, 'keydown');
await new Promise(r => setTimeout(r, 10));
sendKey(81, 'keyup');
}
Object.keys(KEYS).forEach(id => {
console.log(id);
const element = document.getElementById(id);
element.addEventListener('click', tap);
});
</script>
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