mirror of
https://github.com/pkimpel/retro-b5500.git
synced 2026-02-12 11:17:29 +00:00
0cb2022b63
2. Change time-slicing algorithm in Processor and implement Denicola's setImmediate() shim. 3. Find and fix normalization/rounding bugs in Processor.singlePrecisionAdd and .singlePrecisionMultiply. 4. Rework Processor.doublePrecisionAdd, but it's still not right. 5. Move read interval timer details from Processor to CentralControl. 6. Implement more centralized process halt in CentralControl and Processor. 7. CardReader: a. Fix bug when adding decks to input hopper if previous deck did not end with a line delimiter. b. Allow "?" characters as valid if not in column 1. c. "Upgrade" from 800 to 1400 cards/minute. 8. DummyLinePrinter: a. Attempt to implement double-click as a way to clear the output window (but doesn't work yet). b. "Upgrade" from 800 to 1040 lines per minute (B329 model). 9. SPOUnit: a. Tweak paper scrolling behavior. b. Rework handling of ESC/BS/Enter keys; allow Input Request while SPO is busy with output. 10. Set AUTOPRNT option by default in B5500ColdLoader.
596 lines
21 KiB
JavaScript
596 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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var that = this;
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this.maxScrollLines = 500; // 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.clear();
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this.backspaceChar.that = this; // Store object context for these functions
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this.printChar.that = this;
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this.outputChar.that = this;
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this.window = window.open("", mnemonic);
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if (this.window) {
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this.window.close(); // 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=600,height=500");
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this.window.addEventListener("load", function() {
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that.spoOnload();
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}, false);
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}
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// this.spoState enumerations
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B5500SPOUnit.prototype.spoNotReady = 0;
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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.activeIOUnit = 0; // I/O unit currently using this device
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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.spoNotReady; // 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.setNotReady = function setNotReady() {
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/* Sets the status of the SPO to Not Ready */
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if (this.spoState == this.spoLocal) {
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this.spoState = this.spoNotReady;
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this.removeClass(this.$$("SPOReadyBtn"), "yellowLit");
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this.statusChange(0);
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.setReady = function setReady() {
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/* Sets the status of the SPO to Ready */
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if (this.spoState == this.spoNotReady) {
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this.addClass(this.$$("SPOReadyBtn"), "yellowLit");
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this.spoState = this.spoLocal;
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}
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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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if (this.spoState == this.spoRemote) {
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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.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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/**************************************/
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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 that = backspaceChar.that;
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var line = that.paper.lastChild;
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if (that.bufLength > 0) {
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that.bufIndex--;
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}
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if (that.printCol > 0) {
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that.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 that = printChar.that;
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var line = that.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. Note the use of the local
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function property "that" (initialized in the constructor), which supplies the
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necessary SPOUnit object context across setTimeout() calls */
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var that = outputChar.that; // retrieve our object context
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var nextTime = that.nextCharTime + that.charPeriod;
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var delay = nextTime - new Date().getTime();
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that.nextCharTime = nextTime;
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if (that.printCol < 72) { // print the character
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if (that.bufIndex < that.bufLength) {
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that.printChar(that.buffer[that.bufIndex]);
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that.bufIndex++;
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that.printCol++;
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setTimeout(that.outputChar, delay);
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} else { // set up for the final CR/LF
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that.printCol = 72;
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setTimeout(that.outputChar, delay);
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}
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} else if (that.printCol == 72) { // delay to fake the output of a carriage-return
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that.printCol++;
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setTimeout(that.outputChar, delay+that.charPeriod);
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} else { // actually output the CR/LF
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that.appendEmptyLine();
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if (that.bufIndex < that.bufLength) {
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that.printCol = 0; // more characters to print after the CR/LF
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setTimeout(that.outputChar, delay);
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} else { // message text is exhausted
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that.finish(that.errorMask, that.bufLength); // report finish with any errors
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if (that.spoLocalRequested) {
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that.setLocal();
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} else {
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that.spoState = that.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 then Input Request 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.$$("SPOInputRequestBtn"), "yellowLit");
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this.bufLength = this.bufIndex;
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this.nextCharTime = new Date().getTime();
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this.outputChar();
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}
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};
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/**************************************/
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B5500SPOUnit.prototype.cancelInput = function cancelInput() {
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/* Handles the Error message event. This is identical to terminateInput(),
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but it also sets a parity error so the input message will be rejected */
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if (this.spoState = this.spoInput) {
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this.removeClass(this.$$("SPOInputRequestBtn"), "yellowLit");
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this.errorMask |= 0x10; // set parity/error-button bit
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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.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 that = this;
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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 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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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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setTimeout(function() {that.printChar(c)}, nextTime-stamp);
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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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setTimeout(function() {that.printChar(c)}, nextTime-stamp);
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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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setTimeout(function() {that.printChar(c)}, nextTime-stamp);
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}
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}
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if (!result) {
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ev.preventDefault();
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}
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return result;
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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 that = this;
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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.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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setTimeout(this.backspaceChar, 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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setTimeout(function() {
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that.appendEmptyLine();
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}, 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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return result;
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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.spoOnload = function spoOnload() {
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/* Initializes the SPO window and user interface */
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var that = this;
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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.$$("SPOUT").contentDocument.head.innerHTML += "<style>" +
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"BODY {background-color: #FFE} " +
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"PRE {margin: 0; font-size: 10pt; font-family: Lucida Sans Typewriter, Courier New, Courier, monospace}" +
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"</style>";
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this.window.resizeTo(this.window.outerWidth+this.$$("SPODiv").scrollWidth-this.window.innerWidth+8,
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this.window.outerHeight+this.$$("SPODiv").scrollHeight-this.window.innerHeight+8);
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this.window.moveTo(0, screen.availHeight-this.window.outerHeight);
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this.window.focus();
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|
|
|
this.$$("SPORemoteBtn").addEventListener("click", function() {
|
|
that.setRemote();
|
|
}, false);
|
|
|
|
this.$$("SPOPowerBtn").addEventListener("click", function() {
|
|
that.window.alert("Don't DO THAT");
|
|
}, false);
|
|
|
|
this.$$("SPOLocalBtn").addEventListener("click", function() {
|
|
that.setLocal();
|
|
}, false);
|
|
|
|
this.$$("SPOInputRequestBtn").addEventListener("click", function() {
|
|
if (that.spoState == that.spoRemote) {
|
|
that.signal();
|
|
} else if (that.spoState == that.spoOutput) {
|
|
that.signal();
|
|
}
|
|
}, false);
|
|
|
|
this.$$("SPOErrorBtn").addEventListener("click", function() {
|
|
that.cancelInput();
|
|
}, false);
|
|
|
|
this.$$("SPOEndOfMessageBtn").addEventListener("click", function() {
|
|
that.terminateInput();
|
|
}, false);
|
|
|
|
this.window.addEventListener("keypress", function(ev) {
|
|
if (ev.keyCode == 191) {ev.preventDefault()};
|
|
that.keyPress(ev);
|
|
}, false);
|
|
|
|
this.window.addEventListener("keydown", function(ev) {
|
|
if (ev.keyCode == 191) {ev.preventDefault()};
|
|
that.keyDown(ev);
|
|
}, false);
|
|
|
|
for (x=0; x<32; x++) {
|
|
this.appendEmptyLine();
|
|
}
|
|
this.setReady();
|
|
this.window.focus();
|
|
this.printText("retro-B5500 Emulator Version " + B5500CentralControl.version, function() {
|
|
that.setRemote();
|
|
that.appendEmptyLine();
|
|
});
|
|
};
|
|
|
|
/**************************************/
|
|
B5500SPOUnit.prototype.read = function read(finish, buffer, length, mode, control) {
|
|
/* Initiates a read operation on the unit */
|
|
|
|
this.errorMask = 0;
|
|
switch (this.spoState) {
|
|
case this.spoRemote:
|
|
this.spoState = this.spoInput;
|
|
this.addClass(this.$$("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
|
|
};
|