mirror of
https://github.com/pkimpel/retro-b5500.git
synced 2026-02-10 18:40:19 +00:00
d1e59a2f7c
2. Implement new setCallback() mechanism to wrap setTimeout() and setImmediate(). 2. Minor change to P2 management; remove context-bound callbacks. 3. Reduce window size and font size for peripheral UIs. 4. Implement <label> for file names on ColdLoader Load table. 5. Correct placement and color of buttons on Console and SPO. 6. Minor wiki updates for UI changes. 7. Rework SPO implementation to eliminate ".that" properties, implement setCallback(), and fix long-standing bugs that caused flaky operation.
469 lines
17 KiB
JavaScript
469 lines
17 KiB
JavaScript
/***********************************************************************
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* retro-b5500/emulator B5500CardReader.js
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************************************************************************
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* Copyright (c) 2013, 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 Card Reader Peripheral Unit module.
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*
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* Defines a card reader peripheral unit type.
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*
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************************************************************************
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* 2013-06-05 P.Kimpel
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* Original version, from B5500SPOUnit.js.
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***********************************************************************/
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"use strict";
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/**************************************/
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function B5500CardReader(mnemonic, unitIndex, designate, statusChange, signal) {
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/* Constructor for the CardReader object */
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var that = this;
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var x = (mnemonic == "CRA" ? 0 : 30);
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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 (not used here)
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this.timer = null; // setTimeout() token
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this.initiateStamp = 0; // timestamp of last initiation (set by IOUnit)
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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.window = window.open("/B5500/webUI/B5500CardReader.html", mnemonic,
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"scrollbars=no,resizable,width=560,height=160,left="+x+",top="+x);
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this.window.addEventListener("load", function windowLoad() {
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that.readerOnload();
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}, false);
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this.outHopperFrame = null;
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this.outHopper = null;
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}
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B5500CardReader.prototype.eolRex = /([^\n\r\f]*)((:?\r[\n\f]?)|\n|\f)?/g;
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B5500CardReader.prototype.cardsPerMinute = 1400; // B129 card reader
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B5500CardReader.prototype.cardFilter = [ // Filter ASCII character 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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B5500CardReader.prototype.$$ = function $$(e) {
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return this.doc.getElementById(e);
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};
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/**************************************/
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B5500CardReader.prototype.clear = function clear() {
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/* Initializes (and if necessary, creates) the reader 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 = ""; // Card reader "input hopper"
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this.bufLength = 0; // Current input buffer length (characters)
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this.bufIndex = 0; // 0-relative offset to next "card" to be read
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this.eofArmed = false; // EOF button: armed state
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};
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/**************************************/
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B5500CardReader.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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B5500CardReader.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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B5500CardReader.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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B5500CardReader.prototype.setReaderReady = function setReaderReady(ready) {
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/* Controls the ready-state of the card reader */
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this.$$("CRFileSelector").disabled = ready;
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this.ready = ready;
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if (ready) {
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this.statusChange(1);
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this.removeClass(this.$$("CRNotReadyLight"), "redLit");
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} else {
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this.statusChange(0);
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this.addClass(this.$$("CRNotReadyLight"), "redLit");
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}
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};
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/**************************************/
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B5500CardReader.prototype.armEOF = function armEOF(armed) {
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/* Controls the arming/disarming of the EOF signal when starting with
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an empty input hopper */
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this.eofArmed = armed;
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if (armed) {
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this.addClass(this.$$("CREOFBtn"), "redLit");
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} else {
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this.removeClass(this.$$("CREOFBtn"), "redLit");
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}
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};
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/**************************************/
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B5500CardReader.prototype.CRStartBtn_onclick = function CRStartBtn_onclick(ev) {
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/* Handle the click event for the START button */
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var that = this;
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if (!this.ready) {
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this.$$("CRFileSelector").value = null; // reset the control so the same file can be reloaded
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if (this.bufIndex < this.bufLength) {
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this.setReaderReady(true);
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}
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}
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};
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/**************************************/
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B5500CardReader.prototype.CRStopBtn_onclick = function CRStopBtn_onclick(ev) {
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/* Handle the click event for the STOP button */
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this.$$("CRFileSelector").value = null; // reset the control so the same file can be reloaded
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if (this.ready) {
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this.setReaderReady(false);
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} else if (this.eofArmed) {
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this.armEOF(false);
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}
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};
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/**************************************/
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B5500CardReader.prototype.CREOFBtn_onclick = function CREOFBtn_onclick(ev) {
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/* Handle the click event for the EOF button */
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this.armEOF(!this.eofArmed);
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};
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/**************************************/
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B5500CardReader.prototype.CRProgressBar_onclick = function CRProgressBar_onclick(ev) {
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/* Handle the click event for the "input hopper" progress bar */
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if (this.bufIndex < this.bufLength && !this.ready) {
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if (this.window.confirm((this.bufLength-this.bufIndex).toString() + " of " + this.bufLength.toString() +
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" characters remaining to read.\nDo you want to clear the reader input hopper?")) {
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this.buffer = "";
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this.bufLength = 0;
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this.bufIndex = 0;
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this.$$("CRProgressBar").value = 0;
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}
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}
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};
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/**************************************/
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B5500CardReader.prototype.fileSelector_onChange = function fileSelector_onChange(ev) {
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/* Handle the <input type=file> onchange event when files are selected. For each
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file, load it and add it to the "input hopper" of the reader */
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var deck;
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var f = ev.target.files;
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var that = this;
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var x;
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function fileLoader_onLoad(ev) {
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/* Handle the onload event for a Text FileReader */
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if (that.bufIndex >= that.bufLength) {
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that.buffer = ev.target.result;
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} else {
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switch (that.buffer.charAt(that.buffer.length-1)) {
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case "\r":
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case "\n":
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case "\f":
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break; // do nothing -- the last card has a delimiter
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default:
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that.buffer += "\n"; // so the next deck starts on a new line
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break;
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}
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that.buffer = that.buffer.substring(that.bufIndex) + ev.target.result;
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}
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that.bufIndex = 0;
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that.bufLength = that.buffer.length;
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that.$$("CRProgressBar").value = that.bufLength;
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that.$$("CRProgressBar").max = that.bufLength;
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}
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for (x=f.length-1; x>=0; x--) {
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deck = new FileReader();
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deck.onload = fileLoader_onLoad;
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deck.readAsText(f[x]);
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}
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};
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/**************************************/
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B5500CardReader.prototype.readCardAlpha = function readCardAlpha(buffer, length) {
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/* Reads one card image from the buffer in alpha mode; pads or trims the
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image as necessary to the I/O buffer length. Invalid BCL characters are
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translated to ASCII "?" and the invalid character bit is set in the errorMask.
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Returns the raw card image as a string */
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var c; // current character
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var card; // card image
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var cardLength; // length of card image
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var match; // result of eolRex.exec()
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var x; // for loop index
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this.eolRex.lastIndex = this.bufIndex;
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match = this.eolRex.exec(this.buffer);
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if (!match) {
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card = "";
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cardLength = 0;
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} else {
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this.bufIndex += match[0].length;
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card = match[1];
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cardLength = card.length;
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if (length < cardLength) {
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cardLength = length;
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}
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for (x=0; x<cardLength; x++) {
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c = card.charCodeAt(x);
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if (c == 0x3F && x > 0) { // an actual "?"
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buffer[x] = 0x3F;
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} else if (c > 0x7F) { // Unicode R Us -- NOT!
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this.errorMask |= 0x08;
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} else if ((buffer[x] = this.cardFilter[c]) == 0x3F) { // intentional assignment
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this.errorMask |= 0x08;
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}
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}
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}
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while (cardLength < length) {
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buffer[cardLength++] = 0x20; // pad with spaces
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}
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return card;
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};
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/**************************************/
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B5500CardReader.prototype.readCardBinary = function readCardBinary(buffer, length) {
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/* Reads one card image from the buffer in binary mode; pads or trims the
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image as necessary to the I/O buffer length. Invalid BCL characters are
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translated to ASCII "?", but are not reported in the errorMask.
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Returns the raw card image as a string */
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var card; // card image
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var cardLength; // length of card image
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var match; // result of eolRex.exec()
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var x; // for loop index
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this.eolRex.lastIndex = this.bufIndex;
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match = this.eolRex.exec(this.buffer);
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if (!match) {
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card = "";
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cardLength = 0;
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} else {
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this.bufIndex += match[0].length;
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card = match[1];
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cardLength = card.length;
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if (length < cardLength) {
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cardLength = length;
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}
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for (x=0; x<cardLength; x++) {
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buffer[x] = this.cardFilter[card.charCodeAt(x) & 0x7F];
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}
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}
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while (cardLength < length) {
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buffer[cardLength++] = 0x30; // pad with ASCII zeroes
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}
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return card;
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};
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/**************************************/
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B5500CardReader.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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B5500CardReader.prototype.readerOnload = function readerOnload() {
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/* Initializes the reader window and user interface */
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var that = this;
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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.outHopperFrame = this.$$("CROutHopperFrame");
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this.outHopperFrame.contentDocument.head.innerHTML += "<style>" +
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"BODY {background-color: white; margin: 2px} " +
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"PRE {margin: 0; font-size: 8pt; font-family: Lucida Sans Typewriter, Courier New, Courier, monospace}" +
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"</style>";
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this.outHopper = this.doc.createElement("pre");
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this.outHopperFrame.contentDocument.body.appendChild(this.outHopper);
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this.window.addEventListener("beforeunload", this.beforeUnload, false);
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this.armEOF(false);
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this.setReaderReady(false);
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this.$$("CRFileSelector").addEventListener("change", function fileSelectorChange(ev) {
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that.fileSelector_onChange(ev);
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}, false);
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this.$$("CRStartBtn").addEventListener("click", function startClick(ev) {
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that.CRStartBtn_onclick(ev);
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}, false);
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this.$$("CRStopBtn").addEventListener("click", function stopClick(ev) {
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that.CRStopBtn_onclick(ev);
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}, false);
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this.$$("CREOFBtn").addEventListener("click", function eofClick(ev) {
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that.CREOFBtn_onclick(ev);
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}, false);
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this.$$("CRProgressBar").addEventListener("click", function progressClick(ev) {
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that.CRProgressBar_onclick(ev);
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}, false);
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};
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/**************************************/
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B5500CardReader.prototype.read = function read(finish, buffer, length, mode, control) {
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/* Initiates a read operation on the unit. If the reader is not ready and the input
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buffer is empty and EOF is armed, returns EOF; otherwise if not ready,
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returns Not Ready */
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var card;
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var that = this;
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this.errorMask = 0;
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if (this.busy) {
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finish(0x01, 0); // report unit busy
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} else if (!this.ready) {
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if (this.eofArmed && this.bufIndex >= this.bufLength) {
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this.armEOF(false);
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finish(0x24, 0); // report unit EOF + not ready
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} else {
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finish(0x04, 0); // report unit not ready
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}
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} else {
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this.busy = true;
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if (mode == 0) {
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card = this.readCardAlpha(buffer, length);
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} else {
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card = this.readCardBinary(buffer, length);
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}
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if (this.bufIndex < this.bufLength) {
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this.$$("CRProgressBar").value = this.bufLength-this.bufIndex;
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} else {
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this.$$("CRProgressBar").value = 0;
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this.buffer = ""; // discard the input buffer
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this.bufLength = 0;
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this.bufIndex = 0;
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this.setReaderReady(false);
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}
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this.timer = setTimeout(function readDelay() {
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that.busy = false;
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finish(that.errorMask, length);
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}, 60000/this.cardsPerMinute + this.initiateStamp - new Date().getTime());
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while (this.outHopper.childNodes.length > 1) {
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this.outHopper.removeChild(this.outHopper.firstChild);
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}
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this.outHopper.appendChild(this.doc.createTextNode("\n"));
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this.outHopper.appendChild(this.doc.createTextNode(card));
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}
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};
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/**************************************/
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B5500CardReader.prototype.space = function space(finish, length, control) {
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/* Initiates a space operation on the unit */
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finish(0x04, 0); // report unit not ready
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};
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/**************************************/
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B5500CardReader.prototype.write = function write(finish, buffer, length, mode, control) {
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/* Initiates a write operation on the unit */
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finish(0x04, 0); // report unit not ready
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};
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/**************************************/
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B5500CardReader.prototype.erase = function erase(finish, length) {
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/* Initiates an erase operation on the unit */
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finish(0x04, 0); // report unit not ready
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};
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/**************************************/
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B5500CardReader.prototype.rewind = function rewind(finish) {
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/* Initiates a rewind operation on the unit */
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finish(0x04, 0); // report unit not ready
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};
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/**************************************/
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B5500CardReader.prototype.readCheck = function readCheck(finish, length, control) {
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/* Initiates a read check operation on the unit */
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finish(0x04, 0); // report unit not ready
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};
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/**************************************/
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B5500CardReader.prototype.readInterrogate = function readInterrogate(finish, control) {
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/* Initiates a read interrogate operation on the unit */
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finish(0x04, 0); // report unit not ready
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};
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/**************************************/
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B5500CardReader.prototype.writeInterrogate = function writeInterrogate(finish, control) {
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/* Initiates a write interrogate operation on the unit */
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finish(0x04, 0); // report unit not ready
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};
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/**************************************/
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B5500CardReader.prototype.shutDown = function shutDown() {
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/* Shuts down the device */
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if (this.timer) {
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clearTimeout(this.timer);
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}
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this.window.removeEventListener("beforeunload", this.beforeUnload, false);
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this.window.close();
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};
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