836 lines
22 KiB
JavaScript
836 lines
22 KiB
JavaScript
"use strict";
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// Emulator classes
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var PLATFORMS = {};
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function noise() {
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return (Math.random() * 256) & 0xff;
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}
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function __createCanvas(mainElement, width, height) {
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// TODO
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var fsElement = document.createElement('div');
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fsElement.style.position = "relative";
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fsElement.style.padding = "5%";
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fsElement.style.overflow = "hidden";
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fsElement.style.background = "black";
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var canvas = document.createElement('canvas');
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canvas.width = width;
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canvas.height = height;
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canvas.style['class'] = "emuvideo";
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canvas.style.width = "100%";
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canvas.style.height = "100%";
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canvas.tabIndex = "-1"; // Make it focusable
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fsElement.appendChild(canvas);
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mainElement.appendChild(fsElement);
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return canvas;
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}
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var RasterVideo = function(mainElement, width, height, options) {
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var self = this;
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var canvas, ctx;
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var imageData, arraybuf, buf8, datau32;
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this.create = function() {
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self.canvas = canvas = __createCanvas(mainElement, width, height);
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if (options && options.rotate) {
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// TODO: aspect ratio?
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canvas.style.transform = "rotate("+options.rotate+"deg)";
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if (canvas.width > canvas.height)
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canvas.style.paddingTop = canvas.style.paddingBottom = "10%";
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else
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canvas.style.paddingLeft = canvas.style.paddingRight = "10%";
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}
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ctx = canvas.getContext('2d');
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imageData = ctx.createImageData(width, height);
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/*
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arraybuf = new ArrayBuffer(imageData.data.length);
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buf8 = new Uint8Array(arraybuf); // TODO: Uint8ClampedArray
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datau32 = new Uint32Array(arraybuf);
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*/
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buf8 = imageData.data;
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datau32 = new Uint32Array(imageData.data.buffer);
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}
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// TODO: common function (canvas)
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this.setKeyboardEvents = function(callback) {
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canvas.onkeydown = function(e) {
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callback(e.which, 0, 1|_metakeyflags(e));
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};
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canvas.onkeyup = function(e) {
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callback(e.which, 0, 0|_metakeyflags(e));
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};
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canvas.onkeypress = function(e) {
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callback(e.which, e.charCode, 1|_metakeyflags(e));
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};
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};
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this.getFrameData = function() {
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return datau32;
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}
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this.updateFrame = function(sx, sy, dx, dy, width, height) {
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//imageData.data.set(buf8); // TODO: slow w/ partial updates
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if (width && height)
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ctx.putImageData(imageData, sx, sy, dx, dy, width, height);
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else
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ctx.putImageData(imageData, 0, 0);
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}
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/*
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mainElement.style.position = "relative";
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mainElement.style.overflow = "hidden";
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mainElement.style.outline = "none";
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mainElement.tabIndex = "-1"; // Make it focusable
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borderElement = document.createElement('div');
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borderElement.style.position = "relative";
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borderElement.style.overflow = "hidden";
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borderElement.style.background = "black";
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borderElement.style.border = "0 solid black";
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borderElement.style.borderWidth = "" + borderTop + "px " + borderLateral + "px " + borderBottom + "px";
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if (Javatari.SCREEN_CONTROL_BAR === 2) {
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borderElement.style.borderImage = "url(" + IMAGE_PATH + "screenborder.png) " +
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borderTop + " " + borderLateral + " " + borderBottom + " repeat stretch";
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}
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fsElement = document.createElement('div');
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fsElement.style.position = "relative";
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fsElement.style.width = "100%";
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fsElement.style.height = "100%";
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fsElement.style.overflow = "hidden";
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fsElement.style.background = "black";
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document.addEventListener("fullscreenchange", fullScreenChanged);
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document.addEventListener("webkitfullscreenchange", fullScreenChanged);
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document.addEventListener("mozfullscreenchange", fullScreenChanged);
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document.addEventListener("msfullscreenchange", fullScreenChanged);
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borderElement.appendChild(fsElement);
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canvas.style.position = "absolute";
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canvas.style.display = "block";
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canvas.style.left = canvas.style.right = 0;
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canvas.style.top = canvas.style.bottom = 0;
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canvas.style.margin = "auto";
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canvas.tabIndex = "-1"; // Make it focusable
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canvas.style.outline = "none";
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fsElement.appendChild(canvas);
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setElementsSizes(jt.CanvasDisplay.DEFAULT_STARTING_WIDTH, jt.CanvasDisplay.DEFAULT_STARTING_HEIGHT);
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mainElement.appendChild(borderElement);
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*/
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}
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var VectorVideo = function(mainElement, width, height) {
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var self = this;
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var canvas, ctx;
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var persistenceAlpha = 0.5;
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var jitter = 1.0;
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var gamma = 0.8;
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var sx = width/1024.0;
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var sy = height/1024.0;
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this.create = function() {
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canvas = __createCanvas(mainElement, width, height);
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ctx = canvas.getContext('2d');
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}
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// TODO: common function (canvas)
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this.setKeyboardEvents = function(callback) {
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canvas.onkeydown = function(e) {
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callback(e.which, 0, 1|_metakeyflags(e));
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};
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canvas.onkeyup = function(e) {
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callback(e.which, 0, 0|_metakeyflags(e));
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};
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canvas.onkeypress = function(e) {
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callback(e.which, e.charCode, 1|_metakeyflags(e));
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};
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};
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this.clear = function() {
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ctx.globalCompositeOperation = 'source-over';
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ctx.globalAlpha = persistenceAlpha;
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ctx.fillStyle = '#000000';
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ctx.fillRect(0, 0, width, height);
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ctx.globalAlpha = 1.0;
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ctx.globalCompositeOperation = 'lighter';
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}
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var COLORS = [
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'#111111',
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'#1111ff',
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'#11ff11',
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'#11ffff',
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'#ff1111',
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'#ff11ff',
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'#ffff11',
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'#ffffff'
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];
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this.drawLine = function(x1, y1, x2, y2, intensity, color) {
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//console.log(x1, y1, x2, y2, intensity);
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if (intensity > 0) {
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// TODO: landscape vs portrait
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var alpha = Math.pow(intensity / 255.0, gamma);
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ctx.globalAlpha = alpha;
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ctx.beginPath();
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// TODO: bright dots
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var jx = jitter * (Math.random() - 0.5);
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var jy = jitter * (Math.random() - 0.5);
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x1 += jx;
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x2 += jx;
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y1 += jy;
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y2 += jy;
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ctx.moveTo(x1*sx, height-y1*sy);
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if (x1 == x2 && y1 == y2)
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ctx.lineTo(x2*sx+1, height-y2*sy);
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else
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ctx.lineTo(x2*sx, height-y2*sy);
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ctx.strokeStyle = COLORS[color & 7];
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ctx.stroke();
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}
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}
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}
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var RAM = function(size) {
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var memArray = new ArrayBuffer(size);
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this.mem = new Uint8Array(memArray);
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}
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// TODO
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var AnimationTimer = function(frequencyHz, callback) {
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var intervalMsec = 1000.0 / frequencyHz;
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var curTime = 0;
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var running;
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var useReqAnimFrame = false; // TODO: disable on OS X
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function scheduleFrame() {
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if (useReqAnimFrame)
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window.requestAnimationFrame(nextFrame);
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else
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setTimeout(nextFrame, intervalMsec);
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}
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var nextFrame = function(timestamp) {
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// TODO: calculate framerate
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callback();
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if (running) {
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scheduleFrame();
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}
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}
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this.isRunning = function() {
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return running;
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}
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this.start = function() {
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if (!running) {
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running = true;
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scheduleFrame();
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}
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}
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this.stop = function() {
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running = false;
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}
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}
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//
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function cpuStateToLongString_6502(c) {
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function decodeFlags(c, flags) {
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var s = "";
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s += c.N ? " N" : " -";
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s += c.V ? " V" : " -";
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s += c.D ? " D" : " -";
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s += c.Z ? " Z" : " -";
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s += c.C ? " C" : " -";
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// s += c.I ? " I" : " -";
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return s;
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}
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return "PC " + hex(c.PC,4) + " " + decodeFlags(c) + "\n"
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+ " A " + hex(c.A) + " " + (c.R ? "" : "BUSY") + "\n"
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+ " X " + hex(c.X) + "\n"
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+ " Y " + hex(c.Y) + " " + "SP " + hex(c.SP) + "\n";
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}
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////// 6502
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var Base6502Platform = function() {
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this.newCPU = function(membus) {
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var cpu = new jt.M6502();
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cpu.connectBus(membus);
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return cpu;
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}
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this.getOpcodeMetadata = function(opcode, offset) {
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return Javatari.getOpcodeMetadata(opcode, offset); // TODO
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}
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this.getOriginPC = function() {
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return (this.readAddress(0xfffc) | (this.readAddress(0xfffd) << 8)) & 0xffff;
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}
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var onBreakpointHit;
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var debugCondition;
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var debugSavedState = null;
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var debugBreakState = null;
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var debugTargetClock = 0;
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var debugClock = 0;
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this.setDebugCondition = function(debugCond) {
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if (debugSavedState) {
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this.loadState(debugSavedState);
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} else {
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debugSavedState = this.saveState();
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}
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debugClock = 0;
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debugCondition = debugCond;
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debugBreakState = null;
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this.resume();
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}
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this.restartDebugState = function() {
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if (debugCondition && !debugBreakState) {
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debugSavedState = this.saveState();
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debugTargetClock -= debugClock;
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debugClock = 0;
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}
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}
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this.getDebugCallback = function() {
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return debugCondition;
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}
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this.setupDebug = function(callback) {
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onBreakpointHit = callback;
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}
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this.clearDebug = function() {
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debugSavedState = null;
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debugBreakState = null;
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debugTargetClock = 0;
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debugClock = 0;
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onBreakpointHit = null;
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debugCondition = null;
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}
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this.breakpointHit = function(targetClock) {
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debugTargetClock = targetClock;
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debugBreakState = this.saveState();
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debugBreakState.c.PC = (debugBreakState.c.PC-1) & 0xffff;
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console.log("Breakpoint at clk", debugClock, "PC", debugBreakState.c.PC.toString(16));
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this.pause();
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if (onBreakpointHit) {
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onBreakpointHit(debugBreakState);
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}
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}
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// TODO: lower bound of clock value
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this.step = function() {
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var self = this;
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var previousPC = -1;
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this.setDebugCondition(function() {
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if (debugClock++ > debugTargetClock) {
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var thisState = self.getCPUState();
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if (previousPC < 0) {
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previousPC = thisState.PC;
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} else {
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if (thisState.PC != previousPC && thisState.T == 0) {
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//console.log(previousPC.toString(16), thisPC.toString(16));
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self.breakpointHit(debugClock-1);
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return true;
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}
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}
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}
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return false;
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});
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}
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this.stepBack = function() {
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var self = this;
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var prevState;
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var prevClock;
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this.setDebugCondition(function() {
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if (debugClock++ >= debugTargetClock && prevState) {
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self.loadState(prevState);
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self.breakpointHit(prevClock-1);
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return true;
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} else if (debugClock > debugTargetClock-10 && debugClock < debugTargetClock) {
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if (self.getCPUState().T == 0) {
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prevState = self.saveState();
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prevClock = debugClock;
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}
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}
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return false;
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});
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}
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this.runEval = function(evalfunc) {
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var self = this;
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this.setDebugCondition(function() {
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if (debugClock++ > debugTargetClock) {
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var cpuState = self.getCPUState();
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cpuState.PC = (cpuState.PC-1)&0xffff;
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if (evalfunc(cpuState)) {
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self.breakpointHit(debugClock-1);
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return true;
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} else {
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return false;
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}
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}
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});
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}
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this.runUntilReturn = function() {
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var depth = 1;
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this.runEval(function(c) {
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if (depth <= 0 && c.T == 0)
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return true;
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if (c.o == 0x20)
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depth++;
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else if (c.o == 0x60 || c.o == 0x40)
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--depth;
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return false;
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});
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}
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this.disassemble = function(pc, read) {
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return disassemble6502(pc, read(pc), read(pc+1), read(pc+2));
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}
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this.cpuStateToLongString = function(c) {
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return cpuStateToLongString_6502(c);
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}
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this.getToolForFilename = function(fn) {
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if (fn.endsWith(".pla")) return "plasm";
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if (fn.endsWith(".c")) return "cc65";
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if (fn.endsWith(".s")) return "ca65";
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return "dasm";
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}
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}
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function dumpRAM(ram, ramofs, ramlen) {
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var s = "";
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// TODO: show scrollable RAM for other platforms
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for (var ofs=0; ofs<ramlen; ofs+=0x10) {
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s += '$' + hex(ofs+ramofs) + ':';
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for (var i=0; i<0x10; i++) {
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if (ofs+i < ram.length) {
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if (i == 8) s += " ";
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s += " " + hex(ram[ofs+i]);
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}
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}
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s += "\n";
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}
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return s;
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}
|
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|
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////// Z80
|
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|
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function cpuStateToLongString_Z80(c) {
|
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function decodeFlags(flags) {
|
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var flagspec = "SZ-H-VNC";
|
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var s = "";
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for (var i=0; i<8; i++)
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s += (flags & (128>>i)) ? flagspec.slice(i,i+1) : "-";
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return s; // TODO
|
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}
|
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return "PC " + hex(c.PC,4) + " " + decodeFlags(c.AF) + "\n"
|
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+ "SP " + hex(c.SP,4) + " IR " + hex(c.IR,4) + "\n"
|
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+ "IX " + hex(c.IX,4) + " IY " + hex(c.IY,4) + "\n"
|
||
+ "AF " + hex(c.AF,4) + " BC " + hex(c.BC,4) + "\n"
|
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+ "DE " + hex(c.DE,4) + " HL " + hex(c.HL,4) + "\n"
|
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;
|
||
}
|
||
|
||
|
||
var BaseZ80Platform = function() {
|
||
|
||
window.buildZ80({
|
||
applyContention: false // TODO???
|
||
});
|
||
|
||
// TODO: refactor w/ platforms
|
||
this.newCPU = function(membus, iobus) {
|
||
return window.Z80({
|
||
display: {},
|
||
memory: membus,
|
||
ioBus: iobus
|
||
});
|
||
}
|
||
|
||
// TODO: refactor other parts into here
|
||
this.runCPU = function(cpu, cycles) {
|
||
var debugCond = this.getDebugCallback();
|
||
var targetTstates = cpu.getTstates() + cycles;
|
||
if (debugCond) { // || trace) {
|
||
while (cpu.getTstates() < targetTstates) {
|
||
//_trace(); // TODO
|
||
if (debugCond && debugCond()) {
|
||
debugCond = null;
|
||
break;
|
||
}
|
||
cpu.runFrame(cpu.getTstates() + 1);
|
||
}
|
||
} else {
|
||
cpu.runFrame(targetTstates);
|
||
}
|
||
return cpu.getTstates() - targetTstates;
|
||
}
|
||
|
||
var onBreakpointHit;
|
||
var debugCondition;
|
||
var debugSavedState = null;
|
||
var debugBreakState = null;
|
||
var debugTargetClock = 0;
|
||
|
||
this.setDebugCondition = function(debugCond) {
|
||
if (debugSavedState) {
|
||
this.loadState(debugSavedState);
|
||
} else {
|
||
debugSavedState = this.saveState();
|
||
}
|
||
debugCondition = debugCond;
|
||
debugBreakState = null;
|
||
this.resume();
|
||
}
|
||
this.restartDebugState = function() {
|
||
if (debugCondition && !debugBreakState) {
|
||
debugSavedState = this.saveState();
|
||
if (debugTargetClock > 0)
|
||
debugTargetClock -= debugSavedState.c.T;
|
||
debugSavedState.c.T = 0;
|
||
this.loadState(debugSavedState);
|
||
}
|
||
}
|
||
this.getDebugCallback = function() {
|
||
return debugCondition;
|
||
}
|
||
this.setupDebug = function(callback) {
|
||
onBreakpointHit = callback;
|
||
}
|
||
this.clearDebug = function() {
|
||
debugSavedState = null;
|
||
debugBreakState = null;
|
||
debugTargetClock = 0;
|
||
onBreakpointHit = null;
|
||
debugCondition = null;
|
||
}
|
||
this.breakpointHit = function(targetClock) {
|
||
debugTargetClock = targetClock;
|
||
debugBreakState = this.saveState();
|
||
//debugBreakState.c.PC = (debugBreakState.c.PC-1) & 0xffff;
|
||
console.log("Breakpoint at clk", debugBreakState.c.T, "PC", debugBreakState.c.PC.toString(16));
|
||
this.pause();
|
||
if (onBreakpointHit) {
|
||
onBreakpointHit(debugBreakState);
|
||
}
|
||
}
|
||
this.wasBreakpointHit = function() {
|
||
return debugBreakState != null;
|
||
}
|
||
// TODO: lower bound of clock value
|
||
this.step = function() {
|
||
var self = this;
|
||
this.setDebugCondition(function() {
|
||
var cpuState = self.getCPUState();
|
||
if (cpuState.T > debugTargetClock) {
|
||
self.breakpointHit(cpuState.T);
|
||
return true;
|
||
}
|
||
return false;
|
||
});
|
||
}
|
||
this.stepBack = function() {
|
||
var self = this;
|
||
var prevState;
|
||
var prevClock;
|
||
this.setDebugCondition(function() {
|
||
var cpuState = self.getCPUState();
|
||
var debugClock = cpuState.T;
|
||
if (debugClock >= debugTargetClock && prevState) {
|
||
self.loadState(prevState);
|
||
self.breakpointHit(prevClock);
|
||
return true;
|
||
} else if (debugClock > debugTargetClock-20 && debugClock < debugTargetClock) {
|
||
prevState = self.saveState();
|
||
prevClock = debugClock;
|
||
}
|
||
return false;
|
||
});
|
||
}
|
||
this.runEval = function(evalfunc) {
|
||
var self = this;
|
||
this.setDebugCondition(function() {
|
||
var cpuState = self.getCPUState();
|
||
if (cpuState.T > debugTargetClock) {
|
||
if (evalfunc(cpuState)) {
|
||
self.breakpointHit(cpuState.T);
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
});
|
||
}
|
||
this.runUntilReturn = function() {
|
||
var self = this;
|
||
var depth = 1;
|
||
this.runEval(function(c) {
|
||
if (depth <= 0)
|
||
return true;
|
||
var op = self.readAddress(c.PC);
|
||
if (op == 0xcd) // CALL
|
||
depth++;
|
||
else if (op == 0xc0 || op == 0xc8 || op == 0xc9 || op == 0xd0) // RET (TODO?)
|
||
--depth;
|
||
return false;
|
||
});
|
||
}
|
||
this.cpuStateToLongString = function(c) {
|
||
return cpuStateToLongString_Z80(c);
|
||
}
|
||
this.getToolForFilename = function(fn) {
|
||
if (fn.endsWith(".c")) return "sdcc";
|
||
if (fn.endsWith(".s")) return "sdasz80";
|
||
return "z80asm";
|
||
}
|
||
// TODO
|
||
//this.getOpcodeMetadata = function() { }
|
||
}
|
||
|
||
////// 6809
|
||
|
||
function cpuStateToLongString_6809(c) {
|
||
function decodeFlags(flags) {
|
||
var flagspec = "EFHINZVC";
|
||
var s = "";
|
||
for (var i=0; i<8; i++)
|
||
s += (flags & (128>>i)) ? flagspec.slice(i,i+1) : "-";
|
||
return s; // TODO
|
||
}
|
||
return "PC " + hex(c.PC,4) + " " + decodeFlags(c.CC) + "\n"
|
||
+ "SP " + hex(c.SP,4) + "\n"
|
||
+ " A " + hex(c.A,2) + "\n"
|
||
+ " B " + hex(c.B,2) + "\n"
|
||
+ " X " + hex(c.X,4) + "\n"
|
||
+ " Y " + hex(c.Y,4) + "\n"
|
||
+ " U " + hex(c.U,4) + "\n"
|
||
;
|
||
}
|
||
|
||
var Base6809Platform = function() {
|
||
this.__proto__ = new BaseZ80Platform();
|
||
|
||
this.newCPU = function(membus) {
|
||
var cpu = new CPU6809();
|
||
cpu.init(membus.write, membus.read, 0);
|
||
return cpu;
|
||
}
|
||
|
||
this.runUntilReturn = function() {
|
||
var self = this;
|
||
var depth = 1;
|
||
self.runEval(function(c) {
|
||
if (depth <= 0)
|
||
return true;
|
||
var op = self.readAddress(c.PC);
|
||
// TODO: 6809 opcodes
|
||
if (op == 0x9d || op == 0xad || op == 0xbd) // CALL
|
||
depth++;
|
||
else if (op == 0x3b || op == 0x39) // RET
|
||
--depth;
|
||
return false;
|
||
});
|
||
}
|
||
this.cpuStateToLongString = function(c) {
|
||
return cpuStateToLongString_6809(c);
|
||
}
|
||
this.getToolForFilename = function(fn) {
|
||
return "xasm6809";
|
||
}
|
||
this.disassemble = function(pc, read) {
|
||
// TODO: don't create new CPU
|
||
return new CPU6809().disasm(read(pc), read(pc+1), read(pc+2), read(pc+3), read(pc+4), pc);
|
||
}
|
||
//this.getOpcodeMetadata = function() { }
|
||
}
|
||
|
||
//////////
|
||
|
||
var Keys = {
|
||
VK_ESCAPE: {c: 27, n: "Esc"},
|
||
VK_F1: {c: 112, n: "F1"},
|
||
VK_F2: {c: 113, n: "F2"},
|
||
VK_F3: {c: 114, n: "F3"},
|
||
VK_F4: {c: 115, n: "F4"},
|
||
VK_F5: {c: 116, n: "F5"},
|
||
VK_F6: {c: 117, n: "F6"},
|
||
VK_F7: {c: 118, n: "F7"},
|
||
VK_F8: {c: 119, n: "F8"},
|
||
VK_F9: {c: 120, n: "F9"},
|
||
VK_F10: {c: 121, n: "F10"},
|
||
VK_F11: {c: 122, n: "F11"},
|
||
VK_F12: {c: 123, n: "F12"},
|
||
VK_SCROLL_LOCK: {c: 145, n: "ScrLck"},
|
||
VK_PAUSE: {c: 19, n: "Pause"},
|
||
VK_QUOTE: {c: 192, n: "'"},
|
||
VK_1: {c: 49, n: "1"},
|
||
VK_2: {c: 50, n: "2"},
|
||
VK_3: {c: 51, n: "3"},
|
||
VK_4: {c: 52, n: "4"},
|
||
VK_5: {c: 53, n: "5"},
|
||
VK_6: {c: 54, n: "6"},
|
||
VK_7: {c: 55, n: "7"},
|
||
VK_8: {c: 56, n: "8"},
|
||
VK_9: {c: 57, n: "9"},
|
||
VK_0: {c: 48, n: "0"},
|
||
VK_MINUS: {c: 189, n: "-"},
|
||
VK_MINUS2: {c: 173, n: "-"},
|
||
VK_EQUALS: {c: 187, n: "="},
|
||
VK_EQUALS2: {c: 61, n: "="},
|
||
VK_BACK_SPACE: {c: 8, n: "Bkspc"},
|
||
VK_TAB: {c: 9, n: "Tab"},
|
||
VK_Q: {c: 81, n: "Q"},
|
||
VK_W: {c: 87, n: "W"},
|
||
VK_E: {c: 69, n: "E"},
|
||
VK_R: {c: 82, n: "R"},
|
||
VK_T: {c: 84, n: "T"},
|
||
VK_Y: {c: 89, n: "Y"},
|
||
VK_U: {c: 85, n: "U"},
|
||
VK_I: {c: 73, n: "I"},
|
||
VK_O: {c: 79, n: "O"},
|
||
VK_P: {c: 80, n: "P"},
|
||
VK_ACUTE: {c: 219, n: "´"},
|
||
VK_OPEN_BRACKET: {c: 221, n: "["},
|
||
VK_CLOSE_BRACKET: {c: 220, n: "]"},
|
||
VK_CAPS_LOCK: {c: 20, n: "CpsLck"},
|
||
VK_A: {c: 65, n: "A"},
|
||
VK_S: {c: 83, n: "S"},
|
||
VK_D: {c: 68, n: "D"},
|
||
VK_F: {c: 70, n: "F"},
|
||
VK_G: {c: 71, n: "G"},
|
||
VK_H: {c: 72, n: "H"},
|
||
VK_J: {c: 74, n: "J"},
|
||
VK_K: {c: 75, n: "K"},
|
||
VK_L: {c: 76, n: "L"},
|
||
VK_CEDILLA: {c: 186, n: "Ç"},
|
||
VK_TILDE: {c: 222, n: "~"},
|
||
VK_ENTER: {c: 13, n: "Enter"},
|
||
VK_SHIFT: {c: 16, n: "Shift"},
|
||
VK_BACK_SLASH: {c: 226, n: "\\"},
|
||
VK_Z: {c: 90, n: "Z"},
|
||
VK_X: {c: 88, n: "X"},
|
||
VK_C: {c: 67, n: "C"},
|
||
VK_V: {c: 86, n: "V"},
|
||
VK_B: {c: 66, n: "B"},
|
||
VK_N: {c: 78, n: "N"},
|
||
VK_M: {c: 77, n: "M"},
|
||
VK_COMMA: {c: 188, n: "] ="},
|
||
VK_PERIOD: {c: 190, n: "."},
|
||
VK_SEMICOLON: {c: 191, n: ";"},
|
||
VK_SLASH: {c: 193, n: "/"},
|
||
VK_CONTROL: {c: 17, n: "Ctrl"},
|
||
VK_ALT: {c: 18, n: "Alt"},
|
||
VK_SPACE: {c: 32, n: "Space"},
|
||
VK_INSERT: {c: 45, n: "Ins"},
|
||
VK_DELETE: {c: 46, n: "Del"},
|
||
VK_HOME: {c: 36, n: "Home"},
|
||
VK_END: {c: 35, n: "End"},
|
||
VK_PAGE_UP: {c: 33, n: "PgUp"},
|
||
VK_PAGE_DOWN: {c: 34, n: "PgDown"},
|
||
VK_UP: {c: 38, n: "Up"},
|
||
VK_DOWN: {c: 40, n: "Down"},
|
||
VK_LEFT: {c: 37, n: "Left"},
|
||
VK_RIGHT: {c: 39, n: "Right"},
|
||
VK_NUM_LOCK: {c: 144, n: "Num"},
|
||
VK_DIVIDE: {c: 111, n: "Num /"},
|
||
VK_MULTIPLY: {c: 106, n: "Num *"},
|
||
VK_SUBTRACT: {c: 109, n: "Num -"},
|
||
VK_ADD: {c: 107, n: "Num +"},
|
||
VK_DECIMAL: {c: 194, n: "Num ."},
|
||
VK_NUMPAD0: {c: 96, n: "Num 0"},
|
||
VK_NUMPAD1: {c: 97, n: "Num 1"},
|
||
VK_NUMPAD2: {c: 98, n: "Num 2"},
|
||
VK_NUMPAD3: {c: 99, n: "Num 3"},
|
||
VK_NUMPAD4: {c: 100, n: "Num 4"},
|
||
VK_NUMPAD5: {c: 101, n: "Num 5"},
|
||
VK_NUMPAD6: {c: 102, n: "Num 6"},
|
||
VK_NUMPAD7: {c: 103, n: "Num 7"},
|
||
VK_NUMPAD8: {c: 104, n: "Num 8"},
|
||
VK_NUMPAD9: {c: 105, n: "Num 9"},
|
||
VK_NUMPAD_CENTER: {c: 12, n: "Num Cntr"}
|
||
};
|
||
|
||
function _metakeyflags(e) {
|
||
return (e.shiftKey?2:0) | (e.ctrlKey?4:0) | (e.altKey?8:0) | (e.metaKey?16:0);
|
||
}
|
||
|
||
function setKeyboardFromMap(video, switches, map, func) {
|
||
video.setKeyboardEvents(function(key,code,flags) {
|
||
var o = map[key];
|
||
if (o && func) {
|
||
func(o, key, code, flags);
|
||
}
|
||
if (o) {
|
||
//console.log(key,code,flags,o);
|
||
var mask = o.mask;
|
||
if (mask < 0) { // negative mask == active low
|
||
mask = -mask;
|
||
flags ^= 1;
|
||
}
|
||
if (flags & 1) {
|
||
switches[o.index] |= mask;
|
||
} else {
|
||
switches[o.index] &= ~mask;
|
||
}
|
||
}
|
||
});
|
||
}
|
||
|
||
function makeKeycodeMap(table) {
|
||
var map = {};
|
||
for (var i=0; i<table.length; i++) {
|
||
var entry = table[i];
|
||
map[entry[0].c] = {index:entry[1], mask:entry[2]};
|
||
}
|
||
return map;
|
||
}
|
||
|
||
function padBytes(data, len) {
|
||
if (data.length > len) {
|
||
throw Error("Data too long, " + data.length + " > " + len);
|
||
}
|
||
var r = new RAM(len);
|
||
r.mem.set(data);
|
||
return r.mem;
|
||
}
|
||
|
||
// TODO: better performance, check values
|
||
function AddressDecoder(table, options) {
|
||
var self = this;
|
||
function makeFunction(lo, hi) {
|
||
var s = "";
|
||
if (options && options.gmask) {
|
||
s += "a&=" + options.gmask + ";";
|
||
}
|
||
for (var i=0; i<table.length; i++) {
|
||
var entry = table[i];
|
||
var start = entry[0];
|
||
var end = entry[1];
|
||
var mask = entry[2];
|
||
var func = entry[3];
|
||
self['__fn'+i] = func;
|
||
s += "if (a>=" + start + " && a<="+end + "){";
|
||
if (mask) s += "a&="+mask+";";
|
||
s += "return this.__fn"+i+"(a,v)&0xff;}\n";
|
||
}
|
||
s += "return 0;"; // TODO: noise()?
|
||
return new Function('a', 'v', s);
|
||
}
|
||
return makeFunction(0x0, 0xffff).bind(self);
|
||
}
|
||
|
||
var BusProbe = function(bus) {
|
||
this.read = function(a) {
|
||
var val = bus.read(a);
|
||
return val;
|
||
}
|
||
this.write = function(a,v) {
|
||
return bus.write(a,v);
|
||
}
|
||
}
|