108 lines
4.6 KiB
JavaScript
108 lines
4.6 KiB
JavaScript
/**
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* @fileoverview PDP11-specific compile-time definitions.
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* @author <a href="mailto:Jeff@pcjs.org">Jeff Parsons</a>
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* @version 1.0
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* Created 2016-Sep-03
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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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* It has been adapted from the JavaScript PDP 11/70 Emulator v1.3 written by Paul Nankervis
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* (paulnank@hotmail.com) as of August 2016 from http://skn.noip.me/pdp11/pdp11.html. This code
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* may be used freely provided the original author name is acknowledged in any modified source code.
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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 source code file of every
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* copy or modified version of this work, and to display that copyright notice on every screen
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* that loads or runs any version of this software (see COPYRIGHT in /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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/**
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* @define {string}
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*/
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var APPCLASS = "pdp11"; // this @define is the default application class (eg, "pcx86", "c1pjs")
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/**
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* @define {string}
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*/
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var APPNAME = "PDP11"; // this @define is the default application name (eg, "PCx86", "C1Pjs")
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/**
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* @define {boolean}
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*
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* WARNING: DEBUGGER needs to accurately reflect whether or not the Debugger component is (or will be) loaded.
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* In the compiled case, we rely on the Closure Compiler to override DEBUGGER as appropriate. When it's *false*,
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* nearly all of debugger.js will be conditionally removed by the compiler, reducing it to little more than a
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* "type skeleton", which also solves some type-related warnings we would otherwise have if we tried to remove
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* debugger.js from the compilation process altogether.
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*
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* However, when we're in "development mode" and running uncompiled code in debugger-less configurations,
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* I would like to skip loading debugger.js altogether. When doing that, we must ALSO arrange for an additional file
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* (nodebugger.js) to be loaded immediately after this file, which *explicitly* overrides DEBUGGER with *false*.
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*/
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var DEBUGGER = true; // this @define is overridden by the Closure Compiler to remove Debugger-related support
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/**
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* @define {boolean}
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*
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* BYTEARRAYS is a Closure Compiler compile-time option that allocates an Array of numbers for every Memory block,
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* where each a number represents ONE byte; very wasteful, but potentially slightly faster.
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*
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* See the Memory component for details.
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*/
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var BYTEARRAYS = false;
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/**
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* TYPEDARRAYS enables use of typed arrays for Memory blocks. This used to be a compile-time-only option, but I've
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* added Memory access functions for typed arrays (see MemoryPDP11.afnTypedArray), so support can be enabled dynamically now.
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*
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* See the Memory component for details.
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*/
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var TYPEDARRAYS = (typeof ArrayBuffer !== 'undefined');
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/*
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* Combine all the shared globals and machine-specific globals into one machine-specific global object,
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* which all machine components should start using; eg: "if (PDP11.DEBUG) ..." instead of "if (DEBUG) ...".
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*/
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var PDP11 = {
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APPCLASS: APPCLASS,
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APPNAME: APPNAME,
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APPVERSION: APPVERSION, // shared
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BYTEARRAYS: BYTEARRAYS,
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COMPILED: COMPILED, // shared
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CSSCLASS: CSSCLASS, // shared
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DEBUG: DEBUG, // shared
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DEBUGGER: DEBUGGER,
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MAXDEBUG: MAXDEBUG, // shared
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PRIVATE: PRIVATE, // shared
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TYPEDARRAYS: TYPEDARRAYS,
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SITEHOST: SITEHOST, // shared
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XMLVERSION: XMLVERSION // shared
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};
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if (NODE) {
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global.APPCLASS = APPCLASS;
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global.APPNAME = APPNAME;
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global.DEBUGGER = DEBUGGER;
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global.BYTEARRAYS = BYTEARRAYS;
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global.TYPEDARRAYS = TYPEDARRAYS;
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global.PDP11 = PDP11;
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module.exports = PDP11;
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}
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