mirror of
https://github.com/pkimpel/retro-b5500.git
synced 2026-02-14 12:14:34 +00:00
47e5d09ef7
2. Implement interrupt and device status latching in B5500CentralControl to support better UI display. 3. Implement B5500CardPunch device. 4. Implement preliminary and experimental B5500DummyPrinter device; correct printer I/O initiation in IOUnit. 5. Correct the way that Printer Finished interrupts are handled in IOUnit and CentralControl. 6. Implement Card Load Select in B5500Console and B5500SyllableDebugger. 7. Fix lack of presence-bit detection in return ops for returned values. 8. Redesign B5500CardReader UI to show last two cards read; change method of emptying the input hopper. 9. Set CHECK option and rework SYSTEM/LOG initialization in B5500ColdLoader.html. 10. Centralize system memory cycle time setting; change from 6us to 4us memory cycle time. 11. Increase Processor timeslice to 16ms and rework Processor.schedule() internals for more accurate performance throttling in browsers with poor setTimeout() granularity. 12. Reduce Processor syllable overhead from 2 cycles to 1. 13. Change B5500SPOUnit method of output to "paper" to work better in Google Chrome. 14. Make documentation and debugging enhancements in B5500IOUnit. 15. Release initial test website HTML and Unisys license PDF. 16. Commit Mark XVI DCMCP transcription as of 2013-06-21.
425 lines
16 KiB
JavaScript
425 lines
16 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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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.clear();
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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.window = window.open("/B5500/webUI/B5500CardReader.html", mnemonic,
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"scrollbars=no,resizable,width=700,height=150");
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this.window.addEventListener("load", function() {
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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 = 800;
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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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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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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 (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 a file is selected */
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var f = ev.target.files[0];
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var reader = new FileReader();
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var that = this;
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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 = that.buffer.substring(that.bufIndex) + ev.target.result;
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} else {
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that.buffer = 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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reader.onload = fileLoader_onLoad;
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reader.readAsText(f);
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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 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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if ((buffer[x] = this.cardFilter[card.charCodeAt(x) & 0x7F]) == 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.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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var x = (this.mnemonic == "CRA" ? 0 : this.window.outerWidth + 16);
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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.window.moveTo(x, 0);
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this.window.resizeTo(this.window.outerWidth+this.$$("CRDiv").scrollWidth-this.window.innerWidth+12,
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this.window.outerHeight+this.$$("CRDiv").scrollHeight-this.window.innerHeight+12);
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this.outHopperFrame = this.$$("CROutHopperFrame");
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this.outHopperFrame.contentDocument.head.innerHTML += "<style>" +
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"BODY {background-color: #F0DCB0; margin: 2px} " +
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"PRE {margin: 0; font-size: 9pt; font-family: Lucida Sans Typewriter, Courier New, Courier, monospace}" +
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"</style>";
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this.outHopper = this.doc.createElement("pre");
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this.outHopperFrame.contentDocument.body.appendChild(this.outHopper);
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this.armEOF(false);
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this.setReaderReady(false);
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this.$$("CRFileSelector").addEventListener("change", function(ev) {
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that.fileSelector_onChange(ev);
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}, false);
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this.$$("CRStartBtn").addEventListener("click", function(ev) {
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that.CRStartBtn_onclick(ev);
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}, false);
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this.$$("CRStopBtn").addEventListener("click", function(ev) {
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that.CRStopBtn_onclick(ev);
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}, false);
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this.$$("CREOFBtn").addEventListener("click", function(ev) {
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that.CREOFBtn_onclick(ev);
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}, false);
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this.$$("CRProgressBar").addEventListener("click", function(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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setTimeout(function() {
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that.busy = false;
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finish(that.errorMask, length);
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}, 60000/this.cardsPerMinute);
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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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