mirror of
https://github.com/pkimpel/retro-b5500.git
synced 2026-02-12 19:27:39 +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.
227 lines
8.7 KiB
JavaScript
227 lines
8.7 KiB
JavaScript
/***********************************************************************
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* retro-b5500/emulator B5500DummyPrinter.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 (DUMMY) Line Printer Peripheral Unit module.
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*
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* Defines a Line Printer peripheral unit type. Journals all output to
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* console.log() as well as the pritner window.
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*
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************************************************************************
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* 2013-06-11 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 B5500DummyPrinter(mnemonic, unitIndex, designate, statusChange, signal) {
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/* Constructor for the DummyPrinter object */
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var that = this;
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var h = screen.availHeight*0.60;
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var w = 900;
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var s;
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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,. Printer Finished)
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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.paper = null;
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this.endOfPaper = null;
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this.window = window.open("/B5500/webUI/B5500DummyPrinter.html", mnemonic,
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s = "scrollbars,resizable,width=" + w + ",height=" + h +
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",left=0,top=" + (screen.availHeight - h));
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this.window.addEventListener("load", function windowOnLoad() {
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that.printerOnload();
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}, false);
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}
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B5500DummyPrinter.prototype.linesPerMinute = 1040; // B329 line printer
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B5500DummyPrinter.maxScrollLines = 150000; // Maximum printer scrollback (about a box of paper)
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/**************************************/
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B5500DummyPrinter.prototype.$$ = function $$(e) {
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return this.doc.getElementById(e);
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};
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/**************************************/
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B5500DummyPrinter.prototype.clear = function clear() {
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/* Initializes (and if necessary, creates) the printer 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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};
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/**************************************/
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B5500DummyPrinter.prototype.ripPaper = function ripPaper(ev) {
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/* Handles an event to clear the "paper" from the printer */
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if (this.window.confirm("Do you want to clear the \"paper\" from the printer?")) {
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while (this.paper.firstChild) {
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this.paper.removeChild(this.paper.firstChild);
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}
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}
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};
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/**************************************/
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B5500DummyPrinter.prototype.appendLine = function appendLine(text) {
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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(text || "");
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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.paper.appendChild(line);
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};
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/**************************************/
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B5500DummyPrinter.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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B5500DummyPrinter.prototype.printerOnload = function printerOnload() {
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/* Initializes the line printer 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.paper = this.doc.createElement("pre");
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this.doc.body.appendChild(this.paper);
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this.endOfPaper = this.doc.createElement("div");
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this.doc.body.appendChild(this.endOfPaper);
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this.window.addEventListener("click", function windowOnClick(ev) {
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if (ev.detail == 2) { // check for left-button double-click
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that.ripPaper(ev);
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}
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}, false);
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this.window.addEventListener("beforeunload", this.beforeUnload, false);
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this.statusChange(1);
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};
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/**************************************/
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B5500DummyPrinter.prototype.read = function read(finish, buffer, length, mode, control) {
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/* Initiates a read operation on the unit */
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console.log("READ: L=" + length + ", M=" + mode + ", C=" + control + " : " +
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String.fromCharCode.apply(null, buffer.subarray(0, length)));
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finish(0x04, 0);
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};
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/**************************************/
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B5500DummyPrinter.prototype.space = function space(finish, length, control) {
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/* Initiates a space operation on the unit */
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console.log("SPACE: L=" + length + ", M=" + mode + ", C=" + control + " : " +
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String.fromCharCode.apply(null, buffer.subarray(0, length)));
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finish(0x04, 0);
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};
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/**************************************/
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B5500DummyPrinter.prototype.write = function write(finish, buffer, length, mode, control) {
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/* Initiates a write operation on the unit */
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var text;
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var that = this;
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this.errorMask = 0;
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text = String.fromCharCode.apply(null, buffer.subarray(0, length));
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//console.log("WRITE: L=" + length + ", M=" + mode + ", C=" + control + " : " + text);
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if (length || control) {
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this.appendLine(text + "\n");
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if (control > 1) {
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this.appendLine("\n");
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} else if (control < 0) {
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this.paper.appendChild(this.doc.createElement("hr"));
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}
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}
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this.timer = setTimeout(this.signal,
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60000/this.linesPerMinute + this.initiateStamp - new Date().getTime());
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finish(this.errorMask, 0);
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this.endOfPaper.scrollIntoView();
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};
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/**************************************/
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B5500DummyPrinter.prototype.erase = function erase(finish, length) {
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/* Initiates an erase operation on the unit */
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console.log("ERASE: L=" + length + ", M=" + mode + ", C=" + control + " : " +
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String.fromCharCode.apply(null, buffer.subarray(0, length)));
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finish(0x04, 0);
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};
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/**************************************/
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B5500DummyPrinter.prototype.rewind = function rewind(finish) {
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/* Initiates a rewind operation on the unit */
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console.log("REWIND: L=" + length + ", M=" + mode + ", C=" + control + " : " +
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String.fromCharCode.apply(null, buffer.subarray(0, length)));
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finish(0x04, 0);
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};
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/**************************************/
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B5500DummyPrinter.prototype.readCheck = function readCheck(finish, length, control) {
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/* Initiates a read check operation on the unit */
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console.log("READCK: L=" + length + ", M=" + mode + ", C=" + control + " : " +
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String.fromCharCode.apply(null, buffer.subarray(0, length)));
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finish(0x04, 0);
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};
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/**************************************/
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B5500DummyPrinter.prototype.readInterrogate = function readInterrogate(finish, control) {
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/* Initiates a read interrogate operation on the unit */
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console.log("READIG: L=" + length + ", M=" + mode + ", C=" + control + " : " +
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String.fromCharCode.apply(null, buffer.subarray(0, length)));
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finish(0x04, 0);
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};
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/**************************************/
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B5500DummyPrinter.prototype.writeInterrogate = function writeInterrogate(finish, control) {
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/* Initiates a write interrogate operation on the unit */
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console.log("WRITEG: L=" + length + ", M=" + mode + ", C=" + control + " : " +
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String.fromCharCode.apply(null, buffer.subarray(0, length)));
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finish(0x04, 0);
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};
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/**************************************/
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B5500DummyPrinter.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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}; |