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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="description"
content="This simulator is based on JsSpim (an online MIPS32 simulator based on Prof. James Larus's Spim). It supports 7-segment, LED, Code Editor, breakpoints, custom execution speed, ASCII memory view, highlight on changed registers/memory and radix display for memory.">
<meta name="author" content="Shawn Zhong">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="keywords"
content="spim, qtspim, simulator, mips, mips32, cpu, emulator, assembler, compiler, instruction, register, execution">
<link rel="stylesheet" type="text/css" href="css/index.css">
<link rel="stylesheet" type="text/css" href="css/xcode.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<link rel="stylesheet" href="css/dark-mode.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.5/codemirror.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.5/theme/eclipse.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.5/theme/monokai.min.css">
<title>Embedded System Simulator - Online MIPS32 Simulator Based on JsSpim</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.5/codemirror.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.5/mode/mips/mips.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.5/addon/edit/matchbrackets.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.5/addon/selection/active-line.min.js"></script>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-51728620-4"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag() {
dataLayer.push(arguments);
}
gtag('js', new Date());
gtag('config', 'UA-51728620-4');
</script>
<style>
body {
overflow-y: scroll;
}
#editor {
height: 300px;
margin-bottom: 20px;
}
</style>
</head>
<body>
<nav class="navbar navbar-light bg-light" id="toolbar">
<div class="form-inline">
<div>Please choose a <a href="https://github.com/gebienha/embedded-system-simulation-framework/tree/main/Tests" target="_blank">MIPS
assembly file</a>:  
</div>
<div>
<select id="file-selector" onchange="main(this.value)" class="form-control form-control"></select>
</div>
<div>  or  </div>
<div>
<div class="custom-file">
<input type="file" class="custom-file-input" id="file-upload"
onChange="main(this.files[0]);this.value=''">
<div class="custom-file-label">upload your own</div>
</div>
</div>
</div>
</nav>
<div id="uploadButton">
<button id="theme-toggle" class="btn btn-dark btn-sm">🌙 Dark Mode</button>
</div>
<div id="regs-panel" class="card">
<div class="card-header">
<h5 class="float-left">Regs</h5>
<div class="float-right">
<input type="radio" name="reg-radix" id="reg-radix-hex" value="16" checked
onchange="RegisterUtils.changeRadix(this.value)">
<label for="reg-radix-hex">Hex</label>
<input type="radio" name="reg-radix" id="reg-radix-dec" value="10"
onchange="RegisterUtils.changeRadix(this.value)">
<label for="reg-radix-dec">Dec</label>
<input type="radio" name="reg-radix" id="reg-radix-bin" value="2"
onchange="RegisterUtils.changeRadix(this.value)">
<label for="reg-radix-bin">Bin</label>
</div>
</div>
<div class="card-body">
<!-- Add Tabs -->
<ul class="nav nav-tabs" id="regs-tabs">
<li class="nav-item">
<a class="nav-link active" id="int-regs-tab" href="#" onclick="showRegsTab('int')">Int Regs</a>
</li>
<li class="nav-item">
<a class="nav-link" id="fp-regs-tab" href="#" onclick="showRegsTab('fp')">FP Regs</a>
</li>
</ul>
<div id="int-regs-content" class="tab-content">
<h6>Special Registers</h6>
<pre id="special-int-regs" class="reg-lines"></pre>
<h6>General Registers</h6>
<pre id="general-regs" class="reg-lines"></pre>
</div>
<div id="fp-regs-content" class="tab-content" style="display:none;">
<h6>Special Float Registers</h6>
<pre id="special-float-regs" class="reg-lines"></pre>
<h6>Single Precision</h6>
<pre id="float-regs" class="reg-lines"></pre>
<h6>Double Precision</h6>
<pre id="double-regs" class="reg-lines"></pre>
</div>
</div>
</div>
<div id="text-panel" class="card">
<div class="card-header">
<h5 class="float-left">Text Segment</h5>
<div class="form-inline float-right" id="execution-fieldset">
<div class="form-group">
<label for="speed-selector" class="col-form-label">Execution speed:  </label>
<div>
<input type="range" id="speed-selector" class="custom-range" value="90" max="100"
oninput="Execution.setSpeed(this.value)">
</div>
</div>
   
<div>
<button id="play-button" class="btn btn-primary btn-sm" style="width: 5rem;">Play</button>
<button id="step-button" class="btn btn-success btn-sm" style="width: 4rem;">Step</button>
<button id="reset-button" class="btn btn-danger btn-sm" style="width: 4rem;">Reset</button>
</div>
</div>
</div>
<div class="card-body">
<div id="user-text-container">
<pre class="segment-title">User Text Segment</pre>
<pre id="user-text-content" title="Click to toggle breakpoint"></pre>
</div>
<div id="kernel-text-container">
<pre class="segment-title">Kernel Text Segment</pre>
<pre id="kernel-text-content" title="Click to toggle breakpoint"></pre>
</div>
</div>
<div class="card-footer">
<div class="float-left">
<input id="toggle-kernel-text" type="checkbox" checked
onchange="InstructionUtils.toggleKernelText(this.checked)">
<label for="toggle-kernel-text"> Kernel text </label>
 
<input id="toggle-instruction-value" type="checkbox"
onchange="InstructionUtils.toggleBinary(this.checked)">
<label for="toggle-instruction-value"> Instruction value </label>
 
<input id="toggle-comment" type="checkbox" checked
onchange="InstructionUtils.toggleSourceCode(this.checked)">
<label for="toggle-comment"> Source code </label>
</div>
<div class="text-muted float-right col-form-label">
Click line to toggle breakpoint
</div>
</div>
</div>
<div id="editor-panel" class="card">
<div class="card-header">
<h5 class="float-left">Editor</h5>
<div class="float-right">
<button id="assemble-button" class="btn btn-primary btn-sm">Assemble</button>
<button id="save-button" class="btn btn-primary btn-sm">Save</button>
</div>
</div>
<div class="card-body">
<!-- input for file name -->
<div class="form-group">
<label for="filename-input">File Name:</label>
<div class="d-flex align-items-center">
<input type="text" id="filename-input" class="form-control" placeholder="Enter file name" />
<span id="current-filename" </span>
</div>
</div>
<script>
const editor = CodeMirror(document.querySelector("#editor-panel .card-body"), {
mode: 'mips',
lineNumbers: true,
matchBrackets: true,
styleActiveLine: true,
theme: 'eclipse',
});
// Update the current file name display
function updateCurrentFileName(filename) {
const currentFileNameElement = document.getElementById('current-filename');
currentFileNameElement.textContent = `Current File: ${filename}`;
}
// event listener for the assemble button
document.getElementById('assemble-button').addEventListener('click', function() {
const code = editor.getValue();
const filename = document.getElementById('filename-input').value;
const file = new File([code], filename, {
type: "text/plain",
});
main(file);
});
// event listener for the save button
document.getElementById('save-button').addEventListener('click', function() {
const filename = document.getElementById('filename-input').value;
saveFile(filename)
});
</script>
</div>
</div>
<div id="data-panel" class="card">
<div class="card-header">
<h5 class="float-left">Data Segment</h5>
<div class="float-right">
<input id="toggle-kernel-data" type="checkbox" checked
onchange="MemoryUtils.toggleKernelData(this.checked)">
<label for="toggle-kernel-data"> Kernel data </label>
 
<input type="radio" name="data-radix" id="data-radix-hex" value="16" checked
onchange="MemoryUtils.changeDataRadix(this.value)">
<label for="data-radix-hex">Hex</label>
 
<input type="radio" name="data-radix" id="data-radix-dec" value="10"
onchange="MemoryUtils.changeDataRadix(this.value)">
<label for="data-radix-dec">Dec</label>
</div>
</div>
<div class="card-body">
<div id="user-data-container">
<pre class="segment-title">User Data Segment</pre>
<pre id="user-data-content"></pre>
</div>
<div id="kernel-data-container">
<pre class="segment-title">Kernel Data Segment</pre>
<pre id="kernel-data-content"></pre>
</div>
</div>
</div>
<div id="stack-panel" class="card">
<div class="card-header">
<h5 class="float-left">User Stack</h5>
<div class="float-right">
<input type="radio" name="stack-radix" id="stack-radix-hex" value="16" checked
onchange="MemoryUtils.changeStackRadix(this.value)">
<label for="stack-radix-hex">Hex</label>
 
<input type="radio" name="stack-radix" id="stack-radix-dec" value="10"
onchange="MemoryUtils.changeStackRadix(this.value)">
<label for="stack-radix-dec">Dec</label>
</div>
</div>
<div id="stack-wrapper" class="card-body">
<pre id="stack-content"></pre>
</div>
</div>
<div id="output-panel" class="card">
<h5 class="card-header">Output</h5>
<pre id="output-content" class="card-body"></pre>
</div>
<div id="log-panel" class="card">
<h5 class="card-header">Log</h5>
<pre id="log-content" class="card-body"></pre>
</div>
<div id="seven-segment-panel" class="card">
<div class="card-header">
<h5 class= "segment-title">7-Segment Display</h5>
</div>
<div class="card-body">
<div id="seven-segment-container">
<!-- 4 Digits -->
<div class="seven-segment digit-left">
<div class="segment-a"></div>
<div class="segment-b"></div>
<div class="segment-c"></div>
<div class="segment-d"></div>
<div class="segment-e"></div>
<div class="segment-f"></div>
<div class="segment-g"></div>
</div>
<div class="seven-segment digit-mid-left">
<div class="segment-a"></div>
<div class="segment-b"></div>
<div class="segment-c"></div>
<div class="segment-d"></div>
<div class="segment-e"></div>
<div class="segment-f"></div>
<div class="segment-g"></div>
</div>
<div class="seven-segment digit-mid-right">
<div class="segment-a"></div>
<div class="segment-b"></div>
<div class="segment-c"></div>
<div class="segment-d"></div>
<div class="segment-e"></div>
<div class="segment-f"></div>
<div class="segment-g"></div>
</div>
<div class="seven-segment digit-right" >
<div class="segment-a"></div>
<div class="segment-b"></div>
<div class="segment-c"></div>
<div class="segment-d"></div>
<div class="segment-e"></div>
<div class="segment-f"></div>
<div class="segment-g"></div>
</div>
</div>
</div>
</div>
<div id="led-panel" class="card">
<div class="card-header">
<h5 class="segment-title">LED Display</h5>
</div>
<div class="card-body">
<div id="led-container">
<!-- 8 LEDs -->
<div class="led" id="led7"></div>
<div class="led" id="led6"></div>
<div class="led" id="led5"></div>
<div class="led" id="led4"></div>
<div class="led" id="led3"></div>
<div class="led" id="led2"></div>
<div class="led" id="led1"></div>
<div class="led" id="led0"></div>
</div>
</div>
</div>
<!-- UART Interface -->
<div id="uart-interface" class="card">
<div class="card-header">
<h5 class="segment-title">UART Interface</h5>
</div>
<div class="card-body">
<div class="uart-container">
<!-- TX Section -->
<div class="uart-section">
<h6>Transmit</h6>
<div id="uart-tx-display" class="uart-display"></div>
<div class="uart-controls">
<input type="text" id="uart-tx-input" class="uart-input" placeholder="Type message to send...">
<button id="uart-tx-button" class="uart-button">Send</button>
</div>
<div class="uart-status">
<span><span id="tx-indicator" class="status-indicator"></span> TX</span>
<span id="tx-status">Ready</span>
</div>
</div>
<!-- RX Section -->
<div class="uart-section">
<h6>Receive</h6>
<div id="uart-rx-display" class="uart-display"></div>
<div class="uart-controls">
<select id="uart-baud-rate" class="baud-selector">
<option value="9600">9600 baud</option>
<option value="19200">19200 baud</option>
<option value="38400">38400 baud</option>
<option value="57600">57600 baud</option>
<option value="115200">115200 baud</option>
</select>
<button id="uart-clear-button" class="uart-button">Clear</button>
</div>
<div class="uart-status">
<span><span id="rx-indicator" class="status-indicator"></span> RX</span>
<span id="rx-status">Idle</span>
</div>
</div>
</div>
</div>
</div>
<script type='text/javascript'>
const Elements = Object.freeze({
output: document.getElementById('output-content'),
log: document.getElementById('log-content'),
fileSelector: document.getElementById('file-selector'),
playButton: document.getElementById('play-button'),
resetButton: document.getElementById('reset-button'),
stepButton: document.getElementById('step-button'),
speedSelector: document.getElementById('speed-selector'),
userTextContent: document.getElementById('user-text-content'),
kernelTextContent: document.getElementById('kernel-text-content'),
kernelTextContainer: document.getElementById('kernel-text-container'),
userData: document.getElementById('user-data-content'),
kernelData: document.getElementById('kernel-data-content'),
kernelDataContainer: document.getElementById('kernel-data-container'),
stack: document.getElementById('stack-content'),
generalReg: document.getElementById('general-regs'),
specialIntReg: document.getElementById('special-int-regs'),
specialFloatReg: document.getElementById('special-float-regs'),
floatReg: document.getElementById('float-regs'),
doubleReg: document.getElementById('double-regs'),
});
</script>
<script type='text/javascript' src="js/index.js"></script>
<script type='text/javascript' src="js/instruction.js"></script>
<script type='text/javascript' src="js/uart.js"></script>
<script type='text/javascript' src="js/memory-content.js"></script>
<script type='text/javascript' src="js/memory.js"></script>
<script type='text/javascript' src="js/register.js"></script>
<script type='text/javascript' src="js/execution.js"></script>
<script type='text/javascript' src="js/seven-segment.js"></script>
<script type='text/javascript' src="js/led.js"></script>
<script type='text/javascript' src="js/theme-toggle.js"></script>
<script async type="text/javascript" src="wasm.js"></script>
</body>
</html>