Converted PC8080 to ES6
This commit is contained in:
Jeff Parsons
Jeff Parsons
parent
d930b31c53
commit
0f680839f7
27 changed files with 11054 additions and 10896 deletions
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@ -28,80 +28,337 @@
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"use strict";
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if (NODE) {
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var str = require("../../shared/lib/strlib");
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var web = require("../../shared/lib/weblib");
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var DumpAPI = require("../../shared/lib/dumpapi");
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var Component = require("../../shared/lib/component");
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var PC8080 = require("./defines");
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var Memory8080 = require("./memory");
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}
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var Str = require("../../shared/es6/strlib");
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var Web = require("../../shared/es6/weblib");
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var DumpAPI = require("../../shared/es6/dumpapi");
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var Component = require("../../shared/es6/component");
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var PC8080 = require("./defines");
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var Memory8080 = require("./memory");
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/**
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* ROM8080(parmsROM)
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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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* The ROM8080 component expects the following (parmsROM) properties:
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*
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* addr: physical address of ROM
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* size: amount of ROM, in bytes
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* alias: physical alias address (null if none)
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* file: name of ROM data file
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*
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* NOTE: The ROM data will not be copied into place until the Bus is ready (see initBus()) AND the
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* ROM data file has finished loading (see doneLoad()).
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*
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* Also, while the size parameter may seem redundant, I consider it useful to confirm that the ROM you received
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* is the ROM you expected.
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*
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* @constructor
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* @extends Component
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* @param {Object} parmsROM
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* @unrestricted
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*/
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function ROM8080(parmsROM)
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{
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Component.call(this, "ROM", parmsROM, ROM8080);
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this.abROM = null;
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this.addrROM = parmsROM['addr'];
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this.sizeROM = parmsROM['size'];
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/*
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* The new 'alias' property can now be EITHER a single physical address (like 'addr') OR an array of
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* physical addresses; eg:
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class ROM8080 extends Component {
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/**
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* ROM8080(parmsROM)
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*
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* [0xf0000,0xffff0000,0xffff8000]
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* The ROM8080 component expects the following (parmsROM) properties:
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*
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* We could have overloaded 'addr' to accomplish the same thing, but I think it's better to have any
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* aliased locations listed under a separate property.
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* addr: physical address of ROM
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* size: amount of ROM, in bytes
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* alias: physical alias address (null if none)
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* file: name of ROM data file
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*
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* Most ROMs are not aliased, in which case the 'alias' property should have the default value of null.
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* NOTE: The ROM data will not be copied into place until the Bus is ready (see initBus()) AND the
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* ROM data file has finished loading (see doneLoad()).
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*
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* Also, while the size parameter may seem redundant, I consider it useful to confirm that the ROM you received
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* is the ROM you expected.
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*
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* @this {ROM8080}
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* @param {Object} parmsROM
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*/
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this.addrAlias = parmsROM['alias'];
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constructor(parmsROM)
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{
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super("ROM", parmsROM, ROM8080);
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this.sFilePath = parmsROM['file'];
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this.sFileName = str.getBaseName(this.sFilePath);
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this.abROM = null;
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this.addrROM = parmsROM['addr'];
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this.sizeROM = parmsROM['size'];
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if (this.sFilePath) {
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var sFileURL = this.sFilePath;
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if (DEBUG) this.log('load("' + sFileURL + '")');
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/*
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* If the selected ROM file has a ".json" extension, then we assume it's pre-converted
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* JSON-encoded ROM data, so we load it as-is; ditto for ROM files with a ".hex" extension.
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* Otherwise, we ask our server-side ROM converter to return the file in a JSON-compatible format.
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* The new 'alias' property can now be EITHER a single physical address (like 'addr') OR an array of
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* physical addresses; eg:
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*
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* [0xf0000,0xffff0000,0xffff8000]
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*
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* We could have overloaded 'addr' to accomplish the same thing, but I think it's better to have any
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* aliased locations listed under a separate property.
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*
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* Most ROMs are not aliased, in which case the 'alias' property should have the default value of null.
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*/
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var sFileExt = str.getExtension(this.sFileName);
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if (sFileExt != DumpAPI.FORMAT.JSON && sFileExt != DumpAPI.FORMAT.HEX) {
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sFileURL = web.getHost() + DumpAPI.ENDPOINT + '?' + DumpAPI.QUERY.FILE + '=' + this.sFilePath + '&' + DumpAPI.QUERY.FORMAT + '=' + DumpAPI.FORMAT.BYTES + '&' + DumpAPI.QUERY.DECIMAL + '=true';
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this.addrAlias = parmsROM['alias'];
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this.sFilePath = parmsROM['file'];
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this.sFileName = Str.getBaseName(this.sFilePath);
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if (this.sFilePath) {
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var sFileURL = this.sFilePath;
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if (DEBUG) this.log('load("' + sFileURL + '")');
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/*
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* If the selected ROM file has a ".json" extension, then we assume it's pre-converted
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* JSON-encoded ROM data, so we load it as-is; ditto for ROM files with a ".hex" extension.
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* Otherwise, we ask our server-side ROM converter to return the file in a JSON-compatible format.
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*/
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var sFileExt = Str.getExtension(this.sFileName);
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if (sFileExt != DumpAPI.FORMAT.JSON && sFileExt != DumpAPI.FORMAT.HEX) {
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sFileURL = Web.getHost() + DumpAPI.ENDPOINT + '?' + DumpAPI.QUERY.FILE + '=' + this.sFilePath + '&' + DumpAPI.QUERY.FORMAT + '=' + DumpAPI.FORMAT.BYTES + '&' + DumpAPI.QUERY.DECIMAL + '=true';
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}
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var rom = this;
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Web.getResource(sFileURL, null, true, function(sURL, sResponse, nErrorCode) {
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rom.doneLoad(sURL, sResponse, nErrorCode);
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});
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}
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}
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/**
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* initBus(cmp, bus, cpu, dbg)
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*
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* @this {ROM8080}
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* @param {Computer8080} cmp
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* @param {Bus8080} bus
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* @param {CPUState8080} cpu
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* @param {Debugger8080} dbg
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*/
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initBus(cmp, bus, cpu, dbg)
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{
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this.bus = bus;
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this.cpu = cpu;
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this.dbg = dbg;
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this.copyROM();
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}
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/**
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* powerUp(data, fRepower)
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*
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* @this {ROM8080}
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* @param {Object|null} data
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* @param {boolean} [fRepower]
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* @return {boolean} true if successful, false if failure
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*/
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powerUp(data, fRepower)
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{
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if (this.aSymbols) {
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if (this.dbg) {
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this.dbg.addSymbols(this.id, this.addrROM, this.sizeROM, this.aSymbols);
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}
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/*
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* Our only role in the handling of symbols is to hand them off to the Debugger at our
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* first opportunity. Now that we've done that, our copy of the symbols, if any, are toast.
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*/
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delete this.aSymbols;
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}
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return true;
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}
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/**
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* powerDown(fSave, fShutdown)
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*
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* Since we have nothing to do on powerDown(), and no state to return, we could simply omit
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* this function. But it doesn't hurt anything, and maybe we'll use our state to save something
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* useful down the road, like user-defined symbols (ie, symbols that the Debugger may have
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* created, above and beyond those symbols we automatically loaded, if any, along with the ROM).
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*
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* @this {ROM8080}
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* @param {boolean} [fSave]
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* @param {boolean} [fShutdown]
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* @return {Object|boolean} component state if fSave; otherwise, true if successful, false if failure
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*/
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powerDown(fSave, fShutdown)
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{
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return true;
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}
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/**
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* doneLoad(sURL, sROMData, nErrorCode)
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*
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* @this {ROM8080}
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* @param {string} sURL
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* @param {string} sROMData
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* @param {number} nErrorCode (response from server if anything other than 200)
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*/
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doneLoad(sURL, sROMData, nErrorCode)
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{
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if (nErrorCode) {
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this.notice("Unable to load system ROM (error " + nErrorCode + ": " + sURL + ")");
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return;
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}
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Component.addMachineResource(this.idMachine, sURL, sROMData);
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if (sROMData.charAt(0) == "[" || sROMData.charAt(0) == "{") {
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try {
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/*
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* The most likely source of any exception will be here: parsing the JSON-encoded ROM data.
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*/
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var rom = eval("(" + sROMData + ")");
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var ab = rom['bytes'];
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var adw = rom['data'];
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if (ab) {
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this.abROM = ab;
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}
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else if (adw) {
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/*
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* Convert all the DWORDs into BYTEs, so that subsequent code only has to deal with abROM.
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*/
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this.abROM = new Array(adw.length * 4);
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for (var idw = 0, ib = 0; idw < adw.length; idw++) {
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this.abROM[ib++] = adw[idw] & 0xff;
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this.abROM[ib++] = (adw[idw] >> 8) & 0xff;
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this.abROM[ib++] = (adw[idw] >> 16) & 0xff;
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this.abROM[ib++] = (adw[idw] >> 24) & 0xff;
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}
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}
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else {
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this.abROM = rom;
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}
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this.aSymbols = rom['symbols'];
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if (!this.abROM.length) {
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Component.error("Empty ROM: " + sURL);
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return;
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}
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else if (this.abROM.length == 1) {
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Component.error(this.abROM[0]);
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return;
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}
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} catch (e) {
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this.notice("ROM data error: " + e.message);
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return;
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}
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}
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else {
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/*
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* Parse the ROM data manually; we assume it's in "simplified" hex form (a series of hex byte-values
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* separated by whitespace).
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*/
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var sHexData = sROMData.replace(/\n/gm, " ").replace(/ +$/, "");
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var asHexData = sHexData.split(" ");
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this.abROM = new Array(asHexData.length);
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for (var i = 0; i < asHexData.length; i++) {
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this.abROM[i] = Str.parseInt(asHexData[i], 16);
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}
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}
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this.copyROM();
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}
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/**
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* copyROM()
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*
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* This function is called by both initBus() and doneLoad(), but it cannot copy the the ROM data into place
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* until after initBus() has received the Bus component AND doneLoad() has received the abROM data. When both
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* those criteria are satisfied, the component becomes "ready".
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*
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* @this {ROM8080}
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*/
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copyROM()
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{
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if (!this.isReady()) {
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if (!this.sFilePath) {
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this.setReady();
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}
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else if (this.abROM && this.bus) {
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/*
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* If no explicit size was specified, then use whatever the actual size is.
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*/
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if (!this.sizeROM) {
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this.sizeROM = this.abROM.length;
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}
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if (this.abROM.length != this.sizeROM) {
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/*
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* Note that setError() sets the component's fError flag, which in turn prevents setReady() from
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* marking the component ready. TODO: Revisit this decision. On the one hand, it sounds like a
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* good idea to stop the machine in its tracks whenever a setError() occurs, but there may also be
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* times when we'd like to forge ahead anyway.
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*/
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this.setError("ROM size (" + Str.toHexLong(this.abROM.length) + ") does not match specified size (" + Str.toHexLong(this.sizeROM) + ")");
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}
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else if (this.addROM(this.addrROM)) {
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var aliases = [];
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if (typeof this.addrAlias == "number") {
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aliases.push(this.addrAlias);
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} else if (this.addrAlias != null && this.addrAlias.length) {
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aliases = this.addrAlias;
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}
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for (var i = 0; i < aliases.length; i++) {
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this.cloneROM(aliases[i]);
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}
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/*
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* We used to hang onto the original ROM data so that we could restore any bytes the CPU overwrote,
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* using memory write-notification handlers, but with the introduction of read-only memory blocks, that's
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* no longer necessary.
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*
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* TODO: Consider an option to retain the ROM data, and give the user some way of restoring ROMs.
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* That may be useful for "resumable" machines that save/restore all dirty block of memory, regardless
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* whether they're ROM or RAM. However, the only way to modify a machine's ROM is with the Debugger,
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* and Debugger users should know better.
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*/
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delete this.abROM;
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}
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this.setReady();
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}
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}
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}
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/**
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* addROM(addr)
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*
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* @this {ROM8080}
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* @param {number} addr
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* @return {boolean}
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*/
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addROM(addr)
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{
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if (this.bus.addMemory(addr, this.sizeROM, Memory8080.TYPE.ROM)) {
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if (DEBUG) this.log("addROM(): copying ROM to " + Str.toHexLong(addr) + " (" + Str.toHexLong(this.abROM.length) + " bytes)");
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var i;
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for (i = 0; i < this.abROM.length; i++) {
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this.bus.setByteDirect(addr + i, this.abROM[i]);
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}
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return true;
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}
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/*
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* We don't need to report an error here, because addMemory() already takes care of that.
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*/
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return false;
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}
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/**
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* cloneROM(addr)
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*
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* For ROMs with one or more alias addresses, we used to call addROM() for each address. However,
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* that obviously wasted memory, since each alias was an independent copy, and if you used the
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* Debugger to edit the ROM in one location, the changes would not appear in the other location(s).
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*
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* Now that the Bus component provides low-level getMemoryBlocks() and setMemoryBlocks() methods
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* to manually get and set the blocks of any memory range, it is now possible to create true aliases.
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*
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* @this {ROM8080}
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* @param {number} addr
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*/
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cloneROM(addr)
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{
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var aBlocks = this.bus.getMemoryBlocks(this.addrROM, this.sizeROM);
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this.bus.setMemoryBlocks(addr, this.sizeROM, aBlocks);
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}
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/**
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* ROM8080.init()
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*
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* This function operates on every HTML element of class "rom", extracting the
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* JSON-encoded parameters for the ROM8080 constructor from the element's "data-value"
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* attribute, invoking the constructor to create a ROM8080 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 aeROM = Component.getElementsByClass(document, PC8080.APPCLASS, "rom");
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for (var iROM = 0; iROM < aeROM.length; iROM++) {
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var eROM = aeROM[iROM];
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var parmsROM = Component.getComponentParms(eROM);
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var rom = new ROM8080(parmsROM);
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Component.bindComponentControls(rom, eROM, PC8080.APPCLASS);
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}
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var rom = this;
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web.getResource(sFileURL, null, true, function(sURL, sResponse, nErrorCode) {
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rom.doneLoad(sURL, sResponse, nErrorCode);
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});
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}
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}
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Component.subclass(ROM8080);
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/*
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* NOTE: There's currently no need for this component to have a reset() function, since
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* once the ROM data is loaded, it can't be changed, so there's nothing to reinitialize.
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@ -115,262 +372,9 @@ Component.subclass(ROM8080);
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* via bus.addMemory().
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*/
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/**
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* initBus(cmp, bus, cpu, dbg)
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*
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* @this {ROM8080}
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* @param {Computer8080} cmp
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* @param {Bus8080} bus
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* @param {CPUState8080} cpu
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* @param {Debugger8080} dbg
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*/
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ROM8080.prototype.initBus = function(cmp, bus, cpu, dbg)
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{
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this.bus = bus;
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this.cpu = cpu;
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this.dbg = dbg;
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this.copyROM();
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};
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/**
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* powerUp(data, fRepower)
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*
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* @this {ROM8080}
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* @param {Object|null} data
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* @param {boolean} [fRepower]
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* @return {boolean} true if successful, false if failure
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*/
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ROM8080.prototype.powerUp = function(data, fRepower)
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{
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if (this.aSymbols) {
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if (this.dbg) {
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this.dbg.addSymbols(this.id, this.addrROM, this.sizeROM, this.aSymbols);
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}
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/*
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* Our only role in the handling of symbols is to hand them off to the Debugger at our
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* first opportunity. Now that we've done that, our copy of the symbols, if any, are toast.
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*/
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delete this.aSymbols;
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}
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return true;
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};
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/**
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* powerDown(fSave, fShutdown)
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*
|
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* Since we have nothing to do on powerDown(), and no state to return, we could simply omit
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* this function. But it doesn't hurt anything, and maybe we'll use our state to save something
|
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* useful down the road, like user-defined symbols (ie, symbols that the Debugger may have
|
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* created, above and beyond those symbols we automatically loaded, if any, along with the ROM).
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*
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* @this {ROM8080}
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* @param {boolean} [fSave]
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* @param {boolean} [fShutdown]
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* @return {Object|boolean} component state if fSave; otherwise, true if successful, false if failure
|
||||
*/
|
||||
ROM8080.prototype.powerDown = function(fSave, fShutdown)
|
||||
{
|
||||
return true;
|
||||
};
|
||||
|
||||
/**
|
||||
* doneLoad(sURL, sROMData, nErrorCode)
|
||||
*
|
||||
* @this {ROM8080}
|
||||
* @param {string} sURL
|
||||
* @param {string} sROMData
|
||||
* @param {number} nErrorCode (response from server if anything other than 200)
|
||||
*/
|
||||
ROM8080.prototype.doneLoad = function(sURL, sROMData, nErrorCode)
|
||||
{
|
||||
if (nErrorCode) {
|
||||
this.notice("Unable to load system ROM (error " + nErrorCode + ": " + sURL + ")");
|
||||
return;
|
||||
}
|
||||
|
||||
Component.addMachineResource(this.idMachine, sURL, sROMData);
|
||||
|
||||
if (sROMData.charAt(0) == "[" || sROMData.charAt(0) == "{") {
|
||||
try {
|
||||
/*
|
||||
* The most likely source of any exception will be here: parsing the JSON-encoded ROM data.
|
||||
*/
|
||||
var rom = eval("(" + sROMData + ")");
|
||||
var ab = rom['bytes'];
|
||||
var adw = rom['data'];
|
||||
|
||||
if (ab) {
|
||||
this.abROM = ab;
|
||||
}
|
||||
else if (adw) {
|
||||
/*
|
||||
* Convert all the DWORDs into BYTEs, so that subsequent code only has to deal with abROM.
|
||||
*/
|
||||
this.abROM = new Array(adw.length * 4);
|
||||
for (var idw = 0, ib = 0; idw < adw.length; idw++) {
|
||||
this.abROM[ib++] = adw[idw] & 0xff;
|
||||
this.abROM[ib++] = (adw[idw] >> 8) & 0xff;
|
||||
this.abROM[ib++] = (adw[idw] >> 16) & 0xff;
|
||||
this.abROM[ib++] = (adw[idw] >> 24) & 0xff;
|
||||
}
|
||||
}
|
||||
else {
|
||||
this.abROM = rom;
|
||||
}
|
||||
|
||||
this.aSymbols = rom['symbols'];
|
||||
|
||||
if (!this.abROM.length) {
|
||||
Component.error("Empty ROM: " + sURL);
|
||||
return;
|
||||
}
|
||||
else if (this.abROM.length == 1) {
|
||||
Component.error(this.abROM[0]);
|
||||
return;
|
||||
}
|
||||
} catch (e) {
|
||||
this.notice("ROM data error: " + e.message);
|
||||
return;
|
||||
}
|
||||
}
|
||||
else {
|
||||
/*
|
||||
* Parse the ROM data manually; we assume it's in "simplified" hex form (a series of hex byte-values
|
||||
* separated by whitespace).
|
||||
*/
|
||||
var sHexData = sROMData.replace(/\n/gm, " ").replace(/ +$/, "");
|
||||
var asHexData = sHexData.split(" ");
|
||||
this.abROM = new Array(asHexData.length);
|
||||
for (var i = 0; i < asHexData.length; i++) {
|
||||
this.abROM[i] = str.parseInt(asHexData[i], 16);
|
||||
}
|
||||
}
|
||||
this.copyROM();
|
||||
};
|
||||
|
||||
/**
|
||||
* copyROM()
|
||||
*
|
||||
* This function is called by both initBus() and doneLoad(), but it cannot copy the the ROM data into place
|
||||
* until after initBus() has received the Bus component AND doneLoad() has received the abROM data. When both
|
||||
* those criteria are satisfied, the component becomes "ready".
|
||||
*
|
||||
* @this {ROM8080}
|
||||
*/
|
||||
ROM8080.prototype.copyROM = function()
|
||||
{
|
||||
if (!this.isReady()) {
|
||||
if (!this.sFilePath) {
|
||||
this.setReady();
|
||||
}
|
||||
else if (this.abROM && this.bus) {
|
||||
/*
|
||||
* If no explicit size was specified, then use whatever the actual size is.
|
||||
*/
|
||||
if (!this.sizeROM) {
|
||||
this.sizeROM = this.abROM.length;
|
||||
}
|
||||
if (this.abROM.length != this.sizeROM) {
|
||||
/*
|
||||
* Note that setError() sets the component's fError flag, which in turn prevents setReady() from
|
||||
* marking the component ready. TODO: Revisit this decision. On the one hand, it sounds like a
|
||||
* good idea to stop the machine in its tracks whenever a setError() occurs, but there may also be
|
||||
* times when we'd like to forge ahead anyway.
|
||||
*/
|
||||
this.setError("ROM size (" + str.toHexLong(this.abROM.length) + ") does not match specified size (" + str.toHexLong(this.sizeROM) + ")");
|
||||
}
|
||||
else if (this.addROM(this.addrROM)) {
|
||||
|
||||
var aliases = [];
|
||||
if (typeof this.addrAlias == "number") {
|
||||
aliases.push(this.addrAlias);
|
||||
} else if (this.addrAlias != null && this.addrAlias.length) {
|
||||
aliases = this.addrAlias;
|
||||
}
|
||||
for (var i = 0; i < aliases.length; i++) {
|
||||
this.cloneROM(aliases[i]);
|
||||
}
|
||||
/*
|
||||
* We used to hang onto the original ROM data so that we could restore any bytes the CPU overwrote,
|
||||
* using memory write-notification handlers, but with the introduction of read-only memory blocks, that's
|
||||
* no longer necessary.
|
||||
*
|
||||
* TODO: Consider an option to retain the ROM data, and give the user some way of restoring ROMs.
|
||||
* That may be useful for "resumable" machines that save/restore all dirty block of memory, regardless
|
||||
* whether they're ROM or RAM. However, the only way to modify a machine's ROM is with the Debugger,
|
||||
* and Debugger users should know better.
|
||||
*/
|
||||
delete this.abROM;
|
||||
}
|
||||
this.setReady();
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* addROM(addr)
|
||||
*
|
||||
* @this {ROM8080}
|
||||
* @param {number} addr
|
||||
* @return {boolean}
|
||||
*/
|
||||
ROM8080.prototype.addROM = function(addr)
|
||||
{
|
||||
if (this.bus.addMemory(addr, this.sizeROM, Memory8080.TYPE.ROM)) {
|
||||
if (DEBUG) this.log("addROM(): copying ROM to " + str.toHexLong(addr) + " (" + str.toHexLong(this.abROM.length) + " bytes)");
|
||||
var i;
|
||||
for (i = 0; i < this.abROM.length; i++) {
|
||||
this.bus.setByteDirect(addr + i, this.abROM[i]);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
/*
|
||||
* We don't need to report an error here, because addMemory() already takes care of that.
|
||||
*/
|
||||
return false;
|
||||
};
|
||||
|
||||
/**
|
||||
* cloneROM(addr)
|
||||
*
|
||||
* For ROMs with one or more alias addresses, we used to call addROM() for each address. However,
|
||||
* that obviously wasted memory, since each alias was an independent copy, and if you used the
|
||||
* Debugger to edit the ROM in one location, the changes would not appear in the other location(s).
|
||||
*
|
||||
* Now that the Bus component provides low-level getMemoryBlocks() and setMemoryBlocks() methods
|
||||
* to manually get and set the blocks of any memory range, it is now possible to create true aliases.
|
||||
*
|
||||
* @this {ROM8080}
|
||||
* @param {number} addr
|
||||
*/
|
||||
ROM8080.prototype.cloneROM = function(addr)
|
||||
{
|
||||
var aBlocks = this.bus.getMemoryBlocks(this.addrROM, this.sizeROM);
|
||||
this.bus.setMemoryBlocks(addr, this.sizeROM, aBlocks);
|
||||
};
|
||||
|
||||
/**
|
||||
* ROM8080.init()
|
||||
*
|
||||
* This function operates on every HTML element of class "rom", extracting the
|
||||
* JSON-encoded parameters for the ROM8080 constructor from the element's "data-value"
|
||||
* attribute, invoking the constructor to create a ROM8080 component, and then binding
|
||||
* any associated HTML controls to the new component.
|
||||
*/
|
||||
ROM8080.init = function()
|
||||
{
|
||||
var aeROM = Component.getElementsByClass(document, PC8080.APPCLASS, "rom");
|
||||
for (var iROM = 0; iROM < aeROM.length; iROM++) {
|
||||
var eROM = aeROM[iROM];
|
||||
var parmsROM = Component.getComponentParms(eROM);
|
||||
var rom = new ROM8080(parmsROM);
|
||||
Component.bindComponentControls(rom, eROM, PC8080.APPCLASS);
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* Initialize all the ROM8080 modules on the page.
|
||||
*/
|
||||
web.onInit(ROM8080.init);
|
||||
Web.onInit(ROM8080.init);
|
||||
|
||||
if (NODE) module.exports = ROM8080;
|
||||
module.exports = ROM8080;
|
||||
|
|
|
|||
Loading…
Reference in a new issue