101 lines
3.6 KiB
JavaScript
101 lines
3.6 KiB
JavaScript
/**
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* @fileoverview This file implements the C1Pjs RAM component.
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* @author <a href="mailto:Jeff@pcjs.org">Jeff Parsons</a>
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* @copyright © Jeff Parsons 2012-2017
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*
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* This file is part of PCjs, a computer emulation software project at <http://pcjs.org/>.
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*
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* PCjs is free software: you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation, either version 3
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* of the License, or (at your option) any later version.
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*
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* PCjs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
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* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCjs. If not,
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* see <http://www.gnu.org/licenses/gpl.html>.
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*
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* You are required to include the above copyright notice in every modified copy of this work
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* and to display that copyright notice when the software starts running; see COPYRIGHT in
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* <http://pcjs.org/modules/shared/lib/defines.js>.
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*
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* Some PCjs files also attempt to load external resource files, such as character-image files,
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* ROM files, and disk image files. Those external resource files are not considered part of PCjs
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* for purposes of the GNU General Public License, and the author does not claim any copyright
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* as to their contents.
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*/
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"use strict";
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if (NODE) {
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var Web = require("../../shared/lib/weblib");
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var Component = require("../../shared/lib/component");
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}
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/**
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* TODO: The Closure Compiler treats ES6 classes as 'struct' rather than 'dict' by default,
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* which would force us to declare all class properties in the constructor, as well as prevent
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* us from defining any named properties. So, for now, we mark all our classes as 'unrestricted'.
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*
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* @unrestricted
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*/
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class C1PRAM extends Component {
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/**
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* C1PRAM(parmsRAM)
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*
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* The RAM component expects the following (parmsRAM) properties:
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*
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* size: amount of RAM, in bytes
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*
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* NOTE: We may make a note of the specified size, but we will not actually allocate
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* any memory for the RAM; we wait for the Computer object to tell us where our RAM is,
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* using the setBuffer() method.
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*
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* @this {C1PRAM}
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* @param {Object} parmsRAM
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*/
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constructor(parmsRAM)
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{
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super("C1PRAM", parmsRAM);
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}
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/**
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* @this {C1PRAM}
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* @param {Array} abMemory
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* @param {number} start
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* @param {number} end
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* @param {C1PCPU} cpu
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*/
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setBuffer(abMemory, start, end, cpu)
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{
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this.abMem = abMemory;
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// this.offRAM = start;
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// this.cbRAM = end - start + 1;
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this.setReady();
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}
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/**
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* C1PRAM.init()
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*
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* This function operates on every HTML element of class "ram", extracting the
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* JSON-encoded parameters for the C1PRAM constructor from the element's "data-value"
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* attribute, invoking the constructor to create a C1PRAM component, and then binding
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* any associated HTML controls to the new component.
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*/
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static init()
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{
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var aeRAM = Component.getElementsByClass(document, C1PJS.APPCLASS, "ram");
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for (var iRAM=0; iRAM < aeRAM.length; iRAM++) {
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var eRAM = aeRAM[iRAM];
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var parmsRAM = Component.getComponentParms(eRAM);
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var ram = new C1PRAM(parmsRAM);
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Component.bindComponentControls(ram, eRAM, C1PJS.APPCLASS);
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}
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}
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}
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/*
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* Initialize all the RAM modules on the page.
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*/
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Web.onInit(C1PRAM.init);
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