mirror of
https://github.com/pkimpel/retro-b5500.git
synced 2026-02-12 03:07:30 +00:00
72fca54c23
2. Fix normalization and rounding problems in Processor. 3. Fix Card-Load-Select -- emulator now boots from cards. 4. Commit LDCNTRL label and end cards to source CONTROL.DECK.job 5. Delete unused activeIOUnit property in all I/O drivers. 6. Change CardReader to reset file selector control when hopper becomes empty, instead of when START button is clicked. 7. Minor adjustments to CentralControl annunciator layout and behavior on Console. 8. Increase SPO paper scroll-back to 1500 lines (was 500). 9. Correct Card-Load-Select behavior in SyllableDebugger. 10. Implement setCallback() to replace setImmediate() in SyllableDebugger.
565 lines
21 KiB
JavaScript
565 lines
21 KiB
JavaScript
/***********************************************************************
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* retro-b5500/emulator B5500SPOUnit.js
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************************************************************************
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* Copyright (c) 2012, Nigel Williams and Paul Kimpel.
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* Licensed under the MIT License, see
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* http://www.opensource.org/licenses/mit-license.php
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************************************************************************
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* B5500 SPO Peripheral Unit module.
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*
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* Defines a SPO peripheral unit type that implements the Supervisory
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* Print Out device on the operator's console.
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*
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************************************************************************
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* 2012-12-22 P.Kimpel
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* Original version, from B5500DummyUnit.js.
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***********************************************************************/
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"use strict";
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/**************************************/
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function B5500SPOUnit(mnemonic, unitIndex, designate, statusChange, signal) {
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/* Constructor for the SPOUnit object */
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this.maxScrollLines = 1500; // Maximum amount of printer scrollback
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this.charPeriod = 100; // Printer speed, milliseconds per character
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this.mnemonic = mnemonic; // Unit mnemonic
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this.unitIndex = unitIndex; // Ready-mask bit number
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this.designate = designate; // IOD unit designate number
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this.statusChange = statusChange; // external function to call for ready-status change
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this.signal = signal; // external function to call for special signals (e.g,. SPO input request)
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this.initiateStamp = 0; // timestamp of last initiation (set by IOUnit)
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this.inTimer = null; // input setCallback() token
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this.outTimer = null; // output setCallback() token
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this.clear();
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this.window = window.open("", mnemonic);
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if (this.window) {
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this.shutDown(); // destroy the previously-existing window
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this.window = null;
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}
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this.doc = null;
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this.paper = null;
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this.endOfPaper = null;
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this.window = window.open("/B5500/webUI/B5500SPOUnit.html", mnemonic,
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"scrollbars,resizable,width=758,height=508");
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this.window.moveTo(screen.availWidth-this.window.outerWidth, screen.availHeight-this.window.outerHeight);
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this.window.addEventListener("load", B5500CentralControl.bindMethod(B5500SPOUnit.prototype.spoOnload, this), false);
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}
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// this.spoState enumerations
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B5500SPOUnit.prototype.spoLocal = 1;
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B5500SPOUnit.prototype.spoRemote = 2;
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B5500SPOUnit.prototype.spoInput = 3;
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B5500SPOUnit.prototype.spoOutput = 4;
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B5500SPOUnit.prototype.keyFilter = [ // Filter keyCode values to valid BIC ones
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0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F, // 00-0F
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0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F, // 10-1F
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0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x3F,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F, // 20-2F
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0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F, // 30-3F
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0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F, // 40-4F
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0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x5B,0x3F,0x5D,0x3F,0x3F, // 50-5F
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0x3F,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F, // 60-6F
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0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x7B,0x7C,0x7D,0x7E,0x3F]; // 70-7F
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/**************************************/
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B5500SPOUnit.prototype.$$ = function $$(e) {
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return this.doc.getElementById(e);
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};
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/**************************************/
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B5500SPOUnit.prototype.clear = function clear() {
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/* Initializes (and if necessary, creates) the SPO unit state */
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this.ready = false; // ready status
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this.busy = false; // busy status
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this.errorMask = 0; // error mask for finish()
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this.finish = null; // external function to call for I/O completion
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this.buffer = null;
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this.bufLength = 0;
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this.bufIndex = 0;
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this.printCol = 0;
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this.nextCharTime = 0;
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this.spoState = this.spoLocal; // Current state of SPO interface
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this.spoLocalRequested = false; // LOCAL button pressed while active
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};
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/**************************************/
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B5500SPOUnit.prototype.hasClass = function hasClass(e, name) {
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/* returns true if element "e" has class "name" in its class list */
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var classes = e.className;
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if (!e) {
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return false;
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} else if (classes == name) {
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return true;
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} else {
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return (classes.search("\\b" + name + "\\b") >= 0);
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.addClass = function addClass(e, name) {
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/* Adds a class "name" to the element "e"s class list */
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if (!this.hasClass(e, name)) {
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e.className += (" " + name);
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.removeClass = function removeClass(e, name) {
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/* Removes the class "name" from the element "e"s class list */
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e.className = e.className.replace(new RegExp("\\b" + name + "\\b\\s*", "g"), "");
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};
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/**************************************/
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B5500SPOUnit.prototype.setLocal = function setLocal() {
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/* Sets the status of the SPO to Local */
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this.spoLocalRequested = false;
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this.spoState = this.spoLocal;
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this.addClass(this.$$("SPOLocalBtn"), "yellowLit");
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this.removeClass(this.$$("SPORemoteBtn"), "yellowLit");
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this.removeClass(this.$$("SPOInputRequestBtn"), "yellowLit");
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this.statusChange(0);
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// Set up to echo characters from the keyboard
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this.buffer = null;
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this.bufLength = 0;
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this.bufIndex = 0;
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this.printCol = 0;
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this.nextCharTime = new Date().getTime();
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this.finish = null;
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};
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/**************************************/
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B5500SPOUnit.prototype.setRemote = function setRemote() {
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/* Sets the status of the SPO to Remote */
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if (this.spoState == this.spoLocal) {
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this.spoState = this.spoRemote;
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this.addClass(this.$$("SPORemoteBtn"), "yellowLit");
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this.removeClass(this.$$("SPOLocalBtn"), "yellowLit");
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this.statusChange(1);
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.appendEmptyLine = function appendEmptyLine() {
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/* Removes excess lines already printed, then appends a new <pre> element
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to the <iframe>, creating an empty text node inside the new element */
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var count = this.paper.childNodes.length;
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var line = this.doc.createTextNode("");
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this.printChar(0x0A); // newline
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while (count-- > this.maxScrollLines) {
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this.paper.removeChild(this.paper.firstChild);
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}
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this.endOfPaper.scrollIntoView();
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this.paper.appendChild(line);
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};
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/**************************************/
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B5500SPOUnit.prototype.backspaceChar = function backspaceChar() {
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/* Handles backspace for SPO input */
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var line = this.paper.lastChild;
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if (this.bufLength > 0) {
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this.bufIndex--;
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}
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if (this.printCol > 0) {
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this.printCol--;
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}
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if (line.nodeValue.length > 0) {
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line.nodeValue = line.nodeValue.substring(0, line.nodeValue.length-1);
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.printChar = function printChar(c) {
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/* Echoes the character code "c" to the SPO printer */
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var line = this.paper.lastChild;
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var len = line.nodeValue.length;
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if (len < 1) {
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line.nodeValue = String.fromCharCode(c);
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} else if (len < 72) {
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line.nodeValue += String.fromCharCode(c);
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} else {
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line.nodeValue = line.nodeValue.substring(0, 71) + String.fromCharCode(c);
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.outputChar = function outputChar() {
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/* Outputs one character from the buffer to the SPO. If more characters remain
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to be printed, schedules itself 100 ms later to print the next one, otherwise
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calls finished(). If the column counter exceeds 72, a CR/LF pair is output.
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A CR/LF pair is also output at the end of the message */
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var nextTime = this.nextCharTime + this.charPeriod;
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var delay = nextTime - new Date().getTime();
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this.nextCharTime = nextTime;
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if (this.printCol < 72) { // print the character
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if (this.bufIndex < this.bufLength) {
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this.printChar(this.buffer[this.bufIndex]);
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this.bufIndex++;
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this.printCol++;
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this.outTimer = setCallback(this.outputChar, this, delay);
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} else { // set up for the final CR/LF
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this.printCol = 72;
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this.outTimer = setCallback(this.outputChar, this, delay);
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}
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} else if (this.printCol == 72) { // delay to fake the output of a carriage-return
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this.printCol++;
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this.outTimer = setCallback(this.outputChar, this, delay+this.charPeriod);
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} else { // actually output the CR/LF
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this.appendEmptyLine();
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if (this.bufIndex < this.bufLength) {
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this.printCol = 0; // more characters to print after the CR/LF
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this.outTimer = setCallback(this.outputChar, this, delay);
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} else { // message text is exhausted
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this.finish(this.errorMask, this.bufLength); // report finish with any errors
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if (this.spoLocalRequested) {
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this.setLocal();
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} else {
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this.spoState = this.spoRemote;
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}
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}
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.terminateInput = function terminateInput() {
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/* Handles the End of Message event. Turns off the Ready lamp, then
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calls outputChar(), which will find bufIndex==bufLength, output a new-line,
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set the state to Remote, and call finish() for us. Slick, eh? */
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if (this.spoState == this.spoInput) {
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this.removeClass(this.$$("SPOReadyBtn"), "yellowLit");
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this.bufLength = this.bufIndex;
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this.nextCharTime = new Date().getTime();
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this.outputChar();
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.cancelInput = function cancelInput() {
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/* Handles the Error message event. This is identical to terminateInput(),
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but it also sets a parity error so the input message will be rejected */
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if (this.spoState == this.spoInput) {
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this.errorMask |= 0x10; // set parity/error-button bit
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this.terminateInput();
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.keyPress = function keyPress(ev) {
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/* Handles keyboard character events. Depending on the state of the unit,
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either buffers the character for transmission to the I/O Unit, simply echos
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it to the printer, or ignores it altogether */
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var c = ev.charCode;
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var index = this.bufLength;
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var nextTime;
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var stamp = new Date().getTime();
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if (this.nextCharTime > stamp) {
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nextTime = this.nextCharTime + this.charPeriod;
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} else {
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nextTime = stamp + this.charPeriod;
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}
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this.nextCharTime = nextTime;
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if (this.spoState == this.spoInput) {
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if (c >= 32 && c < 126) {
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this.buffer[this.bufIndex++] = c = this.keyFilter[c];
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if (this.printCol < 72) {
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this.printCol++;
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}
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this.inTimer = setCallback(this.printChar, this, nextTime-stamp, c);
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}
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if (c == 126) { // "~" (B5500 group-mark)
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c = this.keyFilter[c];
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if (this.printCol < 72) {
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this.printCol++;
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}
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this.inTimer = setCallback(this.printChar, this, nextTime-stamp, c);
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this.nextCharTime = nextTime + this.charPeriod;
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this.terminateInput();
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}
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} else if (this.spoState == this.spoLocal) {
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if (c >= 32 && c <= 126) {
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c = this.keyFilter[c];
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this.inTimer = setCallback(this.printChar, this, nextTime-stamp, c);
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}
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}
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ev.preventDefault();
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};
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/**************************************/
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B5500SPOUnit.prototype.keyDown = function keyDown(ev) {
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/* Handles key-down events to capture ESC, BS, and Enter keystrokes */
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var c = ev.keyCode;
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var nextTime;
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var result = true;
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var stamp = new Date().getTime();
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if (this.nextCharTime > stamp) {
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nextTime = this.nextCharTime + this.charPeriod;
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} else {
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nextTime = stamp + this.charPeriod;
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}
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switch (c) {
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case 27: // ESC
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switch (this.spoState) {
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case this.spoRemote:
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case this.spoOutput:
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this.addClass(this.$$("SPOInputRequestBtn"), "yellowLit");
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this.signal();
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result = false;
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break;
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case this.spoInput:
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this.cancelInput();
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result = false;
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break;
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}
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break;
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case 8: // Backspace
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switch (this.spoState) {
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case this.spoInput:
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case this.spoLocal:
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this.inTimer = setCallback(this.backspaceChar, this, nextTime-stamp);
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this.nextCharTime = nextTime;
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result = false;
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break;
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}
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break;
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case 13: // Enter
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switch (this.spoState) {
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case this.spoInput:
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this.terminateInput();
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this.nextCharTime = nextTime;
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result = false;
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break
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case this.spoLocal:
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this.inTimer = setCallback(this.appendEmptyLine, this, nextTime-stamp+this.charPeriod);
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this.nextCharTime = nextTime;
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result = false;
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break;
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}
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break;
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}
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if (!result) {
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ev.preventDefault();
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.printText = function printText(msg, finish) {
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/* Utility function to convert a string to a Typed Array buffer and queue
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it for printing. This is intended only for printing an initialization message
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in Local state */
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var buf = new Uint8Array(msg.length);
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var length = msg.length;
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var x;
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for (x=0; x<length; x++) {
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buf[x] = msg.charCodeAt(x);
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}
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this.buffer = buf;
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this.bufLength = length;
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this.bufIndex = 0;
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this.printCol = 0;
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this.nextCharTime = new Date().getTime();
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this.finish = finish;
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this.outputChar(); // start the printing process
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};
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/**************************************/
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B5500SPOUnit.prototype.beforeUnload = function beforeUnload(ev) {
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var msg = "Closing this window will make the device unusable.\n" +
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"Suggest you stay on the page and minimize this window instead";
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ev.preventDefault();
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ev.returnValue = msg;
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return msg;
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};
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/**************************************/
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B5500SPOUnit.prototype.spoOnload = function spoOnload() {
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/* Initializes the SPO window and user interface */
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var x;
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this.doc = this.window.document;
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this.doc.title = "retro-B5500 " + this.mnemonic;
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this.paper = this.doc.createElement("pre");
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this.paper.appendChild(this.doc.createTextNode(""));
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this.$$("SPOUT").contentDocument.body.appendChild(this.paper);
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this.endOfPaper = this.doc.createElement("div");
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this.endOfPaper.appendChild(this.doc.createTextNode("\xA0"));
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this.$$("SPOUT").contentDocument.body.appendChild(this.endOfPaper);
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this.$$("SPOUT").contentDocument.head.innerHTML += "<style>" +
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"BODY {background-color: white} " +
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"PRE {margin: 0; font-size: 8pt; font-family: Lucida Sans Typewriter, Courier New, Courier, monospace}" +
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"</style>";
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this.window.focus();
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this.window.addEventListener("beforeunload", this.beforeUnload, false);
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this.window.addEventListener("keypress", B5500CentralControl.bindMethod(B5500SPOUnit.prototype.keyPress, this), false);
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this.window.addEventListener("keydown", B5500CentralControl.bindMethod(B5500SPOUnit.prototype.keyDown, this), false);
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this.$$("SPORemoteBtn").addEventListener("click", B5500CentralControl.bindMethod(B5500SPOUnit.prototype.setRemote, this), false);
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this.$$("SPOLocalBtn").addEventListener("click", B5500CentralControl.bindMethod(function localClick() {
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if (this.spoState == this.spoRemote) {
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this.setLocal();
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} else {
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this.spoLocalRequested = true;
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}
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}, this), false);
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this.$$("SPOInputRequestBtn").addEventListener("click", B5500CentralControl.bindMethod(function inputRequestClick() {
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if (this.spoState == this.spoRemote || this.spoState == this.spoOutput) {
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this.addClass(this.$$("SPOInputRequestBtn"), "yellowLit");
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this.signal();
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}
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}, this), false);
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this.$$("SPOErrorBtn").addEventListener("click", B5500CentralControl.bindMethod(B5500SPOUnit.prototype.cancelInput, this), false);
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this.$$("SPOEndOfMessageBtn").addEventListener("click", B5500CentralControl.bindMethod(B5500SPOUnit.prototype.terminateInput, this), false);
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for (x=0; x<32; x++) {
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this.appendEmptyLine();
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}
|
|
this.printText("retro-B5500 Emulator Version " + B5500CentralControl.version, B5500CentralControl.bindMethod(function initComplete() {
|
|
this.window.focus();
|
|
this.setRemote();
|
|
this.appendEmptyLine();
|
|
}, this));
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.read = function read(finish, buffer, length, mode, control) {
|
|
/* Initiates a read operation on the unit */
|
|
|
|
this.errorMask = 0;
|
|
switch (this.spoState) {
|
|
case this.spoRemote:
|
|
this.spoState = this.spoInput;
|
|
this.addClass(this.$$("SPOReadyBtn"), "yellowLit");
|
|
this.removeClass(this.$$("SPOInputRequestBtn"), "yellowLit");
|
|
this.buffer = buffer;
|
|
this.bufLength = length;
|
|
this.bufIndex = 0;
|
|
this.printCol = 0;
|
|
this.nextCharTime = new Date().getTime();
|
|
this.finish = finish;
|
|
this.window.focus();
|
|
break;
|
|
case this.spoOutput:
|
|
case this.spoInput:
|
|
finish(0x01, 0); // report unit busy (should never happen)
|
|
break;
|
|
default:
|
|
finish(0x04, 0); // report unit not ready
|
|
break;
|
|
}
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.space = function space(finish, length, control) {
|
|
/* Initiates a space operation on the unit */
|
|
|
|
finish(0x04, 0); // report unit not ready
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.write = function write(finish, buffer, length, mode, control) {
|
|
/* Initiates a write operation on the unit */
|
|
|
|
this.errorMask = 0;
|
|
switch (this.spoState) {
|
|
case this.spoRemote:
|
|
this.spoState = this.spoOutput;
|
|
this.buffer = buffer;
|
|
this.bufLength = length;
|
|
this.bufIndex = 0;
|
|
this.printCol = 0;
|
|
this.nextCharTime = new Date().getTime();
|
|
this.finish = finish;
|
|
this.window.focus();
|
|
this.outputChar(); // start the printing process
|
|
break;
|
|
case this.spoOutput:
|
|
case this.spoInput:
|
|
finish(0x01, 0); // report unit busy (should never happen)
|
|
break;
|
|
default:
|
|
finish(0x04, 0); // report unit not ready
|
|
break;
|
|
}
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.erase = function erase(finish, length) {
|
|
/* Initiates an erase operation on the unit */
|
|
|
|
finish(0x04, 0); // report unit not ready
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.rewind = function rewind(finish) {
|
|
/* Initiates a rewind operation on the unit */
|
|
|
|
finish(0x04, 0); // report unit not ready
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.readCheck = function readCheck(finish, length, control) {
|
|
/* Initiates a read check operation on the unit */
|
|
|
|
finish(0x04, 0); // report unit not ready
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.readInterrogate = function readInterrogate(finish, control) {
|
|
/* Initiates a read interrogate operation on the unit */
|
|
|
|
finish(0x04, 0); // report unit not ready
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.writeInterrogate = function writeInterrogate(finish, control) {
|
|
/* Initiates a write interrogate operation on the unit */
|
|
|
|
finish(0x04, 0); // report unit not ready
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.shutDown = function shutDown() {
|
|
/* Shuts down the device */
|
|
|
|
if (this.inTimer) {
|
|
clearTimeout(this.inTimer);
|
|
}
|
|
if (this.outTimer) {
|
|
clearTimeout(this.outTimer);
|
|
}
|
|
this.window.removeEventListener("beforeunload", this.beforeUnload, false);
|
|
this.window.close();
|
|
};
|