registerinput.html
来自「MIPS Simulator assembly languge.」· HTML 代码 · 共 499 行 · 第 1/2 页
HTML
499 行
<!-- File: Registers.html
----
---- Page for managing Register input and display
---- Author: Dr. D. Hunkins
---- Date: August 2004
---- Modified: 4 June 05
---->
<html>
<head>
<LINK HREF="pathsim.css" REL="stylesheet" type="text/css">
<title>Register Input</title>
<script>
// Communication of a register index from this script to the Java applet
// is as a decimal integer BUT coming back, it is a decimal string
// since calls to the Java Script from the applet can only pass
// String parameters
function isRegisterNumber(registerNumber) {
for (var i=0; i<registerNumber.length; i++)
if ((registerNumber.charAt(i) < "0") ||
(registerNumber.charAt(i) > "9")) return false;
var value = decimalStringToUnsigned(new String(registerNumber));
if ((value < 0) || (value > 31)) return false;
return true;
}
function valueOf(c) {
if (("0" <= c) && (c <= "9")) return (c-"0");
}
function decimalStringToUnsigned(registerNumber) {
var value = 0;
for (var i=0; i<registerNumber.length; i++)
value = 10*value + valueOf(registerNumber.charAt(i));
return value;
}
function unsignedToDecimalString(number, numberOfDigits) {
var result = "";
var intermediateValue = number;
var digitValue;
var digitCount = 0;
var temp;
while (true){
digitValue = (intermediateValue % 10);
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;
}
digitCount++;
temp = "" + (intermediateValue /= 10);
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(registerValues) {
var temp = new Array();
var temp2 = new Array();
var index = 0;
var word;
var registerNumber;
var registerNumberValue;
if (registerValues.length == 0) return;
while (temp.length > 0)
temp.pop();
while (temp2.length > 0)
temp2.pop();
if (top.getBrowserName() == "Microsoft Internet Explorer")
temp = registerValues.split(/\n/); // For IE: split on newline
else { // For Netscape: replace \n with space\n and split on \n
var valueString = "";
for(i=0; i<registerValues.length; i++)
if (registerValues.charAt(i) == "\n")
valueString = valueString + " \n";
else
valueString = valueString + registerValues.charAt(i)
temp = valueString.split(/\n/);
}
for (var i=0; i<temp.length; i++) {
temp[i] = temp[i].substr(0, temp[i].length-1);
var line = "";
var index = 0;
while ((index < temp[i].length) && (temp[i].charAt(index) == " "))
index++
if (temp[i].substr(index).length > 0)
temp2.push(temp[i].substr(index));
}
for (var 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: Register value " + temp2[i] +
"\nMust be given with a register number" +
"\nRegister Loading Terminated!");
return;
}
registerNumber = temp2[i].substr(0, index);
if (!isRegisterNumber(registerNumber)) {
alert("ERROR: Register Number " + registerNumber +
"\nmust be an decimal number between 1 and 31.\nRegister Loading Terminated!");
return;
}
else if (decimalStringToUnsigned(new String(registerNumber)) == 0) {
alert("ERROR: Register 0 is Constant Holding 00000000" +
"\n Its Value CANNOT be Changed!" +
"\nRegister 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!!\nRegister 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)!!\nRegister Loading Terminated!");
return;
}
}
}
this.zeroRegisters();
for (var i=0; i < temp2.length; i++) {
index = temp2[i].indexOf(":");
var register = temp2[i].substr(0, index);
var registerIndex = decimalStringToUnsigned(new String(register));
if (registerIndex != 0) {
word = temp2[i].substr(index+1);
top.DataPath.setRegister(word, registerIndex);
this.registerValues[registerIndex] = word;
this.lastLoaded[registerIndex] = word;
}
}
this.showRegisters00();
alert("Registers Successfully Loaded!");
}
function zeroRegisters() {
for (var i=0; i<this.numberOfRegisters; i++) {
this.registerValues[i] = "00000000";
this.lastLoaded[i] = "00000000";
}
top.DataPath.zeroRegisters();
}
function setRegister(registerIndex, value) {
this.registerValues[registerIndex] = value;
}
function reLoad() {
registerList.reLoad();
}
function listReload() {
for (var i=0; i<this.numberOfRegisters; i++) {
this.registerValues[i] = this.lastLoaded[i];
if (this.lastLoaded[i] != 0)
top.DataPath.setRegister(this.lastLoaded[i], i);
}
this.showRegisters00();
}
function returnedRegisterAccess(read1, read2, write, value) {
var read1Index = decimalStringToUnsigned(new String(read1));
var read2Index = decimalStringToUnsigned(new String(read2));
var writeString = new String(write);
if (writeString.length > 0) {
var writeIndex = decimalStringToUnsigned(writeString);
registerList.setRegister(writeIndex, value);
if (read1Index == read2Index) {
if (writeIndex == read1Index) {
registerList.showRegisters01(writeIndex);
}
else {
registerList.showRegisters11(read1Index, writeIndex);
}
}
else if (writeIndex == read1Index) {
registerList.showRegisters11(read2Index, writeIndex);
}
else if (writeIndex == read2Index) {
registerList.showRegisters11(read1Index, writeIndex);
}
else {
registerList.showRegisters21(read1Index, read2Index, writeIndex);
}
}
else {
if (read1Index == read2Index) {
registerList.showRegisters10(read1Index);
}
else if (read1Index < read2Index) {
registerList.showRegisters20(read1Index, read2Index);
}
else {
registerList.showRegisters20(read2Index, read1Index);
}
}
⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?