assemblyMachine/assemblyMachine.html at master · 388298347/assemblyMachine · GitHub

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<html>
<head>
<style>
div.outDiv { padding: 20px; min-width: 150px; float:left; font-family: monospace; }
#errorOut { color: red; }
.droparea:-moz-drag-over { border: 1px solid black; }
</style>
<script type="text/javascript" src="assemblyMachine.js"></script>
<script>
function init() {
    m = new machine();
    setButtonState();

    binaryNumbersToggled=false;

    //file support
    if (window.File && window.FileReader && window.FileList && window.Blob) {
        document.getElementById("loadFileDiv").hidden = false;
        document.getElementById('loadFileInput').addEventListener('change', handleFileSelect, false);
    }

    // allow tab input
    document.getElementById("program").onkeydown = function(e){
        if(e.keyCode==9 || e.which==9){
            e.preventDefault();
            var s = this.selectionStart;
            this.value = this.value.substring(0,this.selectionStart) + "\t" + this.value.substring(this.selectionEnd);
            this.selectionEnd = s+1;
        }
    }
}

function onError(err) {
    document.getElementById("errorOut").innerText = (err != null && err.message != null) ? err.message : "Script error";
}

function clearError() {
    document.getElementById("errorOut").innerText = "";
}

function load() {
    clearError();
    try {
        m.load(document.getElementById("program").value);
    }
    catch(err) {
        onError(err);
    }
    setButtonState()
    update();
}

function run() {
    clearError();
    try {
        m.run();
    }
    catch(err) {
        onError(err);
    }
    update();
}

function step() {
    clearError();
    try {
        m.next();
    }
    catch(err) {
        onError(err);
    }
    update();
}

function update() {
    document.getElementById("code").value = m.getProgramStatus().join("\n");
    binaryNumbersToggled = !binaryNumbersToggled;
    toggleBinaryNumbers();
}
function toggleBinaryNumbers() {
    if (binaryNumbersToggled) {
        var o1 = m.getAluStatus();
        for (var i = 0; i < o1.length; i ++) {
            var line = o1[i].split(" ");
            line[1] = Number(line[1]).toString(2);
            o1[i] = line.join(" ");
        }
        document.getElementById("out1").innerHTML = o1.join("<br/>");

        var o2 = m.getMemoryStatus();
        for (var i = 0; i < o2.length; i ++) {
            var line = o2[i].split("\t");
            line[1] = Number(line[1]).toString(2);
            o2[i] = line.join(" ");
        }
        document.getElementById("out2").innerHTML = o2.join("<br/>");
    } else {
        document.getElementById("out1").innerHTML = m.getAluStatus().join("<br/>");
        document.getElementById("out2").innerHTML = m.getMemoryStatus().join("<br/>");
    }

    binaryNumbersToggled = !binaryNumbersToggled;
}

function setButtonState() {
    document.getElementById("runButton").hidden = m.program.length < 1;
    document.getElementById("stepButton").hidden = m.program.length < 1;
    document.getElementById("toggleBinaryButton").hidden = m.program.length < 1;
}

//file load (drag and drop)
function dropHandler(evt) {
    evt.preventDefault();
    if (evt.dataTransfer.items) {
        if (evt.dataTransfer.items.length > 1) {
            alert("Cannot open multiple files");
        } else {
            if (evt.dataTransfer.items[0].kind === 'file') {
                readFile(evt.dataTransfer.items[0].getAsFile());
            }
        }

    } else {
        if (evt.dataTransfer.files.length > 1) {
            alert("Cannot open multiple files");
        } else {
            readFile(evt.dataTransfer.files[0]);
        }
    }

  if (evt.dataTransfer.items) {
      evt.dataTransfer.items.clear();
  } else {
      evt.dataTransfer.clearData();
  }
}

function dragOverHandler(evt) {
  evt.preventDefault();
}

function handleFileSelect(evt) {
    readFile(evt.target.files[0]);
}

function readFile(file) {
    var reader = new FileReader();
    reader.onloadend = (function(tfile) {
        return function(e) {
            loadFile(e.currentTarget.result);
        };
    })(file);
    reader.readAsText(file);
}

function loadFile(text) {
    document.getElementById("program").value = text;
}

//download as file
function saveFile() {
    var filename = "program.txt";
    var data = document.getElementById("program").value;
    var blob = new Blob([data], {type: 'text/plain'});
    if(window.navigator.msSaveOrOpenBlob) {
        window.navigator.msSaveBlob(blob, filename);
    }
    else{
        var elem = window.document.createElement('a');
        elem.href = window.URL.createObjectURL(blob);
        elem.download = filename;
        document.body.appendChild(elem);
        elem.click();
        document.body.removeChild(elem);
        window.URL.revokeObjectURL(elem.href);
    }
}
</script>
</head>
<body onload="init()">
<h1>Mini Assembly Machine</h1>
<div id="loadFileDiv" hidden="true">
  <input type="file" id="loadFileInput" name="file"/>
  <button id="saveFileButton" onclick="saveFile()">Save File</button>
  <br/>
  <br/>
</div>
<div id="drop_zone" ondrop="dropHandler(event)" ondragover="dragOverHandler(event)">
<textarea id="program" cols="40" rows="20">
	LOAD	input
loop:	STORE	tmp
	MUL 	fac
	STORE	fac
	LOAD	tmp
	SUBI	1
	JMPP	loop
	HOLD

input:	WORD	4
tmp:	WORD	0
fac:	WORD	1
</textarea>
<button id="loadButton" onclick="load()">COMPILE >></button>

<textarea id="code" cols="40" rows="20" readonly>
</textarea>
</div>

<br/>
<button id="runButton" onclick="run()">RUN</button>

<button id="stepButton" onclick="step()">STEP</button>

<button id="toggleBinaryButton" onclick="toggleBinaryNumbers()">Toggle format</button>

<span id="errorOut"></span>
<br/>
<div id="out1" class="outDiv"></div>
<div id="out2" class="outDiv"></div>

</body>
</html>