datainput.html
来自「MIPS Simulator assembly languge.」· HTML 代码 · 共 341 行
HTML
341 行
<!-- File: Data.html
----
---- Manges Data Input for PathSim
---- Author: Dr. D. Hunkins
---- Date: 24 June 04
---- Modified: 4 June 05
---->
<html>
<head>
<LINK HREF="pathsim.css" REL="stylesheet" type="text/css">
<title>DataMemory</title>
<script>
function isHexDigit(c) {
if ((("0" <= c) && (c <= "9")) ||
(("A" <= c) && (c <= "F")))
return true;
else
return false;
}
function isAddress(address) {
for (var i=0; i<address.length; i++)
if (!isHexDigit(address.charAt(i))) return false;
return true;
}
function valueOf(c) {
if (("0" <= c) && (c <= "9")) return (c-"0");
switch (c) {
case "A" : return 10;
case "B" : return 11;
case "C" : return 12;
case "D" : return 13;
case "E" : return 14;
case "F" : return 15;
}
}
function hexStringToUnsigned(address) {
var value = 0;
for (var i=0; i<address.length; i++)
value = 16*value + valueOf(address.charAt(i));
return value;
}
function unsignedToHexString(number, numberOfDigits) {
var result = "";
var intermediateValue = number;
var digitValue;
var digitCount = 0;
var temp;
while (true){
digitValue = (intermediateValue % 16);
switch (digitValue){
case 0: result = "0" + result;
break;
case 1: result = "1" + result;
break;
case 2: result = "2" + result;
break;
case 3: result = "3" + result;
break;
case 4: result = "4" + result;
break;
case 5: result = "5" + result;
break;
case 6: result = "6" + result;
break;
case 7: result = "7" + result;
break;
case 8: result = "8" + result;
break;
case 9: result = "9" + result;
break;
case 10: result = "A" + result;
break;
case 11: result = "B" + result;
break;
case 12: result = "C" + result;
break;
case 13: result = "D" + result;
break;
case 14: result = "E" + result;
break;
case 15: result = "F" + result;
break;
}
digitCount++;
temp = "" + (intermediateValue /= 16);
if (temp.indexOf(".") == 0)
intermediateValue = 0;
else
if (temp.indexOf(".") == -1) {
temp = temp.substr(0);
intermediateValue = Number(temp);
}
else {
temp = temp.substr(0, temp.indexOf("."));
intermediateValue = Number(temp);
}
if ((intermediateValue == 0) || (digitCount == numberOfDigits)) break;
}
while (result.length < numberOfDigits)
result = "0" + result;
return result;
}
function load(data)
{
var dataString = data;
var temp = new Array();
var temp2 = new Array();
var index = 0;
var word;
var address;
var addressValue;
while (temp.length > 0)
temp.pop();
while (temp2.length > 0)
temp2.pop();
if (top.getBrowserName() == "Microsoft Internet Explorer")
temp = data.split(/\n/); // For IE: split on newline
else { // For Netscape: replace \n with space\n and split on \n
var dataString = "";
for(i=0; i<data.length; i++)
if (data.charAt(i) == "\n")
dataString = dataString + " \n";
else
dataString = dataString + data.charAt(i)
temp = dataString.split(/\n/);
}
for (i=0; i<temp.length; i++) {
temp[i] = temp[i].substr(0, temp[i].length-1);
if (temp[i].length > 0) {
temp2.push(temp[i]);
}
}
for (i=0; i<temp2.length; i++)
temp2[i] = temp2[i].toUpperCase();
for (var i=0; i<temp2.length; i++) {
index = temp2[i].indexOf(":");
if ((index == -1) || (index == 0)) {
alert("ERROR: Data item " + temp2[i] +
"\nMust be given with an address" +
"\nData Loading Terminated!");
return;
}
var address = temp2[i].substr(0, index);
if (!isAddress(address)) {
alert("ERROR: Address " + address + "\nmust be an hexadecimal number.\nData Loading Terminated!");
return;
}
var addressValue = hexStringToUnsigned(address);
if ((addressValue > 400) || ((addressValue % 4) != 0)) {
alert("ERROR: Address " + address + "\nmust be a multiple of 4 and no more than 400.\nData Loading Terminated!");
return;
}
}
for (var i=0; i < temp2.length; i++) {
index = temp2[i].indexOf(":");
word = temp2[i].substr(index+1);
if (word.length != 8) {
alert("ERROR: " + word +
"\nMust have 8 hex digits!!\nData Loading Terminated!");
return;
}
for (var j=0; j<word.length; j++) {
var digit = word.charAt(j);
if (((digit < "0") || (digit > "9")) &&
((digit < "A") || (digit > "F"))) {
alert("ERROR: " + word +
"\nHas an ILLEGAL character (not a Hex digit)!!\nData Loading Terminated!");
return;
}
}
}
top.DataPath.resetData();
while (this.dataValues.length > 0)
this.dataValues.pop();
for (var i=0; i < temp2.length; i++) {
index = temp2[i].indexOf(":");
var arrayIndex = Math.floor((hexStringToUnsigned(temp2[i].substr(0, index)))/4);
if (arrayIndex > this.maxArrayIndex)
this.maxArrayIndex = arrayIndex;
}
for (var i=0; i <= this.maxArrayIndex; i++)
this.dataValues[i] = "00000000";
for (var i=0; i < temp2.length; i++) {
index = temp2[i].indexOf(":");
var address = temp2[i].substr(0, index);
word = temp2[i].substr(index+1);
var memoryIndex = Math.floor(hexStringToUnsigned(address)/4);
top.DataPath.setData(word, address);
this.dataValues[memoryIndex] = word;
}
for (var i=0; i<this.dataValues.length; i++) {
this.lastLoaded[i] = this.dataValues[i];
}
this.showDataMemory(0, "");
alert("Data Successfully Loaded!");
}
function reLoad() {
dataList.reLoad();
}
function listReload() {
top.DataPath.resetData();
while (this.dataValues.length > 0)
this.dataValues.pop();
for (var i=0; i<=this.maxArrayIndex; i++)
this.dataValues[i] = "00000000";
for (var i=0; i<this.lastLoaded.length; i++) {
this.dataValues[i] = this.lastLoaded[i];
top.DataPath.setData(this.lastLoaded[i], unsignedToHexString(i*4, 3));
}
this.showDataMemory(0,"");
}
function setDataValue(value, arrayIndex) {
if (arrayIndex > this.maxArrayIndex) {
for (var i=this.maxArrayIndex+1; i<=arrayIndex; i++)
this.dataValues[i] = "00000000";
this.maxArrayIndex = arrayIndex;
}
this.dataValues[arrayIndex] = value;
}
function returnedDataAccess(value, address, access) {
var addressString = new String(address);
var addressValue = hexStringToUnsigned(addressString);
var arrayIndex = Math.floor(addressValue/4);
var accessString = new String(access);
if (accessString.toUpperCase() == "WRITE") {
dataList.setDataValue(value, arrayIndex);
dataList.showDataMemory(arrayIndex, "write");
}
else
dataList.showDataMemory(arrayIndex, "read");
}
function showDataMemory(arrayIndex, access) {
var addressValue;
parent.DataMemory.document.open();
parent.DataMemory.document.write("<head>");
parent.DataMemory.document.write("<LINK HREF='pathsim.css' REL='stylesheet' type='text/css'>");
parent.DataMemory.document.write("<div class='boxHead'>Data Memory</div>");
parent.DataMemory.document.write("<div class ='code'>");
if (access.length == 0) {
for (var i=0; i<this.dataValues.length; i++)
if (this.dataValues[i] != "00000000")
parent.DataMemory.document.write(unsignedToHexString(i*4, 3) + ":" + this.dataValues[i] + "<br>");
}
else {
for (var i=0; i<arrayIndex; i++) {
if (this.dataValues[i] != "00000000")
parent.DataMemory.document.write(unsignedToHexString(i*4, 3) + ":" + this.dataValues[i] + "<br>");
}
parent.DataMemory.document.write("</div>");
if (access.toUpperCase() == "WRITE")
parent.DataMemory.document.write("<div class='writeSelected'>");
else
parent.DataMemory.document.write("<div class='readSelected'>");
parent.DataMemory.document.write(unsignedToHexString(arrayIndex*4, 3) + ":" + this.dataValues[arrayIndex] + "<br>");
parent.DataMemory.document.write("</div>");
parent.DataMemory.document.write("<div class ='code'>");
for (var i=arrayIndex+1; i<this.dataValues.length; i++) {
if (this.dataValues[i] != "00000000")
parent.DataMemory.document.write(unsignedToHexString(i*4, 3) + ":" + this.dataValues[i] + "<br>");
}
}
parent.DataMemory.document.write("</div></body>");
parent.DataMemory.document.close();
}
function DataList() {
this.maxArrayIndex = -1;
this.dataValues = new Array();
this.lastLoaded = new Array();
this.load = load;
this.reLoad = listReload;
this.showDataMemory = showDataMemory;
this.setDataValue = setDataValue;
}
function defineHandlers() {
var dataArea = document.data.elements[0];
var loadButton = document.data.elements[1];
loadButton.onclick = function() {dataList.load(dataArea.value)};
}
</script>
</head>
<body>
<form name="data">
<table>
<tr>
<td align="center" width=80%><div class="boxHead">Data Input</div></td>
</tr>
<tr>
<td><textarea name="DataMemory" align="left" rows="12" cols="25"></textarea></td>
</tr>
<td>
<input type="button" name="load" value="Load">
</td>
</tr>
</table>
</form>
<script>
var dataList = new DataList();
defineHandlers();
</script>
</body>
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