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<!DOCTYPE html>
<html ng-app="ASMSimulator">
<head>
<title>Simple 8-bit Assembler Simulator in Javascript</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
<link rel="stylesheet" href="assets/style.css">
<script type="text/javascript" src="//use.typekit.net/tor0zlh.js"></script>
<script type="text/javascript">try{Typekit.load();}catch(e){}</script>
</head>
<body ng-controller="Ctrl">
<a href="https://github.com/Schweigi/assembler-simulator"><img style="z-index:1001;position: absolute; top: 0; right: 0; border: 0;" src="https://s3.amazonaws.com/github/ribbons/forkme_right_red_aa0000.png" alt="Fork me on GitHub"></a>
<nav class="navbar navbar-inverse" role="navigation" style="background-color:#428BCA;border:0px;border-radius:0px;">
<div class="container">
<div class="navbar-header">
<div class="btn-group">
<button type="button" class="btn btn-success navbar-btn" ng-click="run()" ng-hide="isRunning"><span class="glyphicon glyphicon-play"></span> Run</button>
<button type="button" class="btn btn-default navbar-btn" ng-click="stop()" ng-show="isRunning"><span class="glyphicon glyphicon-stop"></span> Stop</button>
<button type="button" class="btn btn-default navbar-btn" ng-click="executeStep()" ng-disabled="isRunning"><span class="glyphicon glyphicon-forward"></span> Step</button>
</div>
<button type="button" class="btn btn-default navbar-btn" ng-click="reset()">Reset</button>
</div>
<div class="navbar-header navbar-right">
<a class="navbar-brand" style="color:#FFFFFF">Simple 8-bit Assembler Simulator</a>
</div>
</div>
</nav>
<div class="container">
<div class="alert alert-danger" ng-hide="error === ''">{{ error }}</div>
<div class="row">
<div class="col-lg-7 col-md-6">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">Code <small>(<a href="./instruction-set.html" target="_blank" style="color: #337AB7">Instruction Set</a>)</small></h4>
</div>
<div class="panel-body">
<form role="form">
<textarea id="sourceCode"
class="form-control source-code"
style="margin-bottom:5px;"
rows="35"
tab-support
select-line
ng-model="code"></textarea>
<button type="button" class="btn btn-default" ng-click="assemble()">Assemble</button>
</form>
</div>
</div>
</div>
<div class="clearfix visible-xs visible-sm"></div>
<div class="col-lg-5 col-md-6">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">Output</h4>
</div>
<div class="panel-body source-code">
<div style="float:left;" class="output"
ng-repeat="m in memory.data | startFrom: outputStartIndex track by $index">
<span>{{ getChar(m) }}</span>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">CPU & Memory</h4>
</div>
<div class="panel-body">
<p class="text-muted">Registers / Flags</p>
<table class="table table-condensed table-striped">
<thead>
<tr>
<th style="text-align:center">A</th>
<th style="text-align:center">B</th>
<th style="text-align:center">C</th>
<th style="text-align:center">D</th>
<th style="text-align:center">IP</th>
<th style="text-align:center">SP</th>
<th style="text-align:center">Z</th>
<th style="text-align:center">C</th>
<th style="text-align:center">F</th>
</tr>
</thead>
<tbody>
<tr style="text-align:center;" class="source-code">
<td><div style="margin:auto;" ng-class="displayA && 'marker marker-a'"><small>{{ cpu.gpr[0] | number:displayHex }}</small></div></td>
<td><div style="margin:auto;" ng-class="displayB && 'marker marker-b'"><small>{{ cpu.gpr[1] | number:displayHex }}</small></div></td>
<td><div style="margin:auto;" ng-class="displayC && 'marker marker-c'"><small>{{ cpu.gpr[2] | number:displayHex }}</small></div></td>
<td><div style="margin:auto;" ng-class="displayD && 'marker marker-d'"><small>{{ cpu.gpr[3] | number:displayHex }}</small></div></td>
<td><div style="margin:auto;" class="marker marker-ip"><small>{{ cpu.ip | number:displayHex }}</small></div></td>
<td><div style="margin:auto;" class="marker marker-sp"><small>{{ cpu.sp | number:displayHex }}</small></div></td>
<td><small>{{ cpu.zero | flag }}</small></td>
<td><small>{{ cpu.carry | flag }}</small></td>
<td><small>{{ cpu.fault | flag }}</small></td>
</tr>
</tbody>
</table>
<p class="text-muted">RAM</p>
<div style="width:29em;" class="source-code">
<div class="memory-block"
ng-repeat="m in memory.data track by $index"
ng-class="getMemoryCellCss($index)">
<div ng-class="getMemoryInnerCellCss($index)" ng-switch="isInstruction($index)">
<small ng-switch-default>{{ m | number:displayHex }}</small>
<a ng-switch-when="true" ng-click="jumpToLine($index)">
<small>{{ m | number:displayHex }}</small>
</a>
</div>
</div>
</div>
<p style="margin-top:5px;">
<small>
<span>Clock speed:</span>
<select ng-model="speed" ng-options="item.speed as item.desc for item in speeds"></select>
<span style="margin-left:5px;">Instructions:</span>
<a ng-click="displayInstr = true" ng-hide="displayInstr">Show</a>
<a ng-click="displayInstr = false" ng-show="displayInstr">Hide</a>
<span style="margin-left:5px;">View:</span>
<a ng-click="displayHex = true" ng-hide="displayHex">Hex</a>
<a ng-click="displayHex = false" ng-show="displayHex">Decimal</a>
<br>
Register addressing:
<span style="margin-left:5px;">A:</span>
<a ng-click="displayA = true" ng-hide="displayA">Show</a>
<a ng-click="displayA = false" ng-show="displayA">Hide</a>
<span style="margin-left:5px;">B:</span>
<a ng-click="displayB = true" ng-hide="displayB">Show</a>
<a ng-click="displayB = false" ng-show="displayB">Hide</a>
<span style="margin-left:5px;">C:</span>
<a ng-click="displayC = true" ng-hide="displayC">Show</a>
<a ng-click="displayC = false" ng-show="displayC">Hide</a>
<span style="margin-left:5px;">D:</span>
<a ng-click="displayD = true" ng-hide="displayD">Show</a>
<a ng-click="displayD = false" ng-show="displayD">Hide</a>
</small>
</p>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">Labels</h4>
</div>
<div class="panel-body source-code">
<table class="table table-condensed table-striped codelabels">
<tr>
<th>Name</th>
<th>Address</th>
<th>Value</th>
</tr>
<tr ng-repeat="(name, value) in labels" class="codelabel">
<td class="codelabel-name">{{ name }}</td>
<td class="codelabel-line"><a ng-click="jumpToLine(value)">{{ value | number:displayHex }}</a></td>
<td class="codelabel-value">{{ memory.data[value] | number:displayHex }}
<span ng-if="memory.data[value] >= 32 && memory.data[value] <= 126">
('{{ getChar(memory.data[value]) }}')
</span>
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
<hr style="margin-top:10px;margin-bottom:10px;"/>
<p><small>by Marco Schweighauser (2015) | MIT License | <a href="https://www.mschweighauser.com/make-your-own-assembler-simulator-in-javascript-part1/" target="_blank">Blog</a></small></p>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.10/angular.min.js"></script>
<script>
window.sourceCode =
`JMP start
print:
MOV [A], B ; prints the character in B
INC A ; moves the screen pointer
POP C ; get the address from the stack
JMP C ; jumps back to where we came from
indirection:
MOV C, next0 ; gets the address after the call
PUSH C ; pushes it on the stack
JMP print ; calls print
next0: POP C ; pops the address of the caller
JMP C ; jumps back to where we came from
start:
MOV A, 232 ; the address of the screen
MOV B, 58 ; the character we want to print
MOV C, next1 ; the address where want to jump back
PUSH C ; push the address to the stack
JMP indirection ; the actual call to the function
next1: HLT
`
;
</script>
<script src="assets/asmsimulator.js"></script>
</body>
</html>