474 lines
13 KiB
TypeScript
474 lines
13 KiB
TypeScript
"use strict";
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import { hex } from "./util";
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// external modules
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declare var jt, Javatari, Z80_fast, CPU6809;
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// Emulator classes
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export var PLATFORMS = {};
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export var frameUpdateFunction : (Canvas) => void = null;
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var _random_state = 1;
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export function noise() {
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let x = _random_state;
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x ^= x << 13;
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x ^= x >> 17;
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x ^= x << 5;
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return (_random_state = x) & 0xff;
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}
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export function getNoiseSeed() {
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return _random_state;
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}
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export function setNoiseSeed(x : number) {
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_random_state = x;
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}
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type KeyboardCallback = (which:number, charCode:number, flags:number) => void;
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function __createCanvas(mainElement:HTMLElement, width:number, height:number) : HTMLElement {
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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.classList.add("emuvideo");
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canvas.tabIndex = -1; // Make it focusable
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mainElement.appendChild(canvas);
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return canvas;
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}
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function _setKeyboardEvents(canvas:HTMLElement, callback:KeyboardCallback) {
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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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export var RasterVideo = function(mainElement:HTMLElement, width:number, height:number, options?) {
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var canvas, ctx;
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var imageData, arraybuf, buf8, datau32;
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this.setRotate = function(rotate) {
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if (rotate) {
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// TODO: aspect ratio?
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canvas.style.transform = "rotate("+rotate+"deg)";
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if (canvas.width < canvas.height)
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canvas.style.paddingLeft = canvas.style.paddingRight = "10%";
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} else {
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canvas.style.transform = null;
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canvas.style.paddingLeft = canvas.style.paddingRight = null;
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}
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}
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this.create = function() {
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this.canvas = canvas = __createCanvas(mainElement, width, height);
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if (options && options.rotate) {
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this.setRotate(options.rotate);
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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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buf8 = imageData.data;
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*/
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datau32 = new Uint32Array(imageData.data.buffer);
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}
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this.setKeyboardEvents = function(callback) {
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_setKeyboardEvents(canvas, callback);
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}
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this.getFrameData = function() { return datau32; }
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this.getContext = function() { return ctx; }
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this.updateFrame = function(sx:number, sy:number, dx:number, dy:number, width?:number, height?:number) {
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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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if (frameUpdateFunction) frameUpdateFunction(canvas);
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}
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}
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export var VectorVideo = function(mainElement:HTMLElement, width:number, height:number) {
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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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this.canvas = canvas = __createCanvas(mainElement, width, height);
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ctx = canvas.getContext('2d');
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}
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this.setKeyboardEvents = function(callback) {
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_setKeyboardEvents(canvas, callback);
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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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if (frameUpdateFunction) frameUpdateFunction(canvas);
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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:number, y1:number, x2:number, y2:number, intensity:number, color:number) {
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//console.log(x1,y1,x2,y2,intensity,color);
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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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export class RAM {
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mem : Uint8Array;
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constructor(size:number) {
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this.mem = new Uint8Array(new ArrayBuffer(size));
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}
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}
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export var AnimationTimer = function(frequencyHz:number, callback:() => void) {
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var intervalMsec = 1000.0 / frequencyHz;
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var running;
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var lastts = 0;
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var useReqAnimFrame = false; //window.requestAnimationFrame ? (frequencyHz>40) : false;
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var nframes, startts; // for FPS calc
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this.frameRate = frequencyHz;
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function scheduleFrame(msec:number) {
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if (useReqAnimFrame)
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window.requestAnimationFrame(nextFrame);
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else
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setTimeout(nextFrame, msec);
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}
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function nextFrame(ts:number) {
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if (!ts) ts = Date.now();
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if (ts - lastts < intervalMsec*10) {
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lastts += intervalMsec;
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} else {
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lastts = ts + intervalMsec; // frames skipped, catch up
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}
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if (running) {
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scheduleFrame(lastts - ts);
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}
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if (!useReqAnimFrame || lastts - ts > intervalMsec/2) {
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if (running) {
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try {
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callback();
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} catch (e) {
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running = false;
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throw e;
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}
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}
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if (nframes == 0) startts = ts;
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if (nframes++ == 300) {
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console.log("Avg framerate: " + nframes*1000/(ts-startts) + " fps");
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}
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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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lastts = 0;
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nframes = 0;
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scheduleFrame(0);
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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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export function dumpRAM(ram:number[], ramofs:number, ramlen:number) : string {
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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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export const Keys = {
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VK_ESCAPE: {c: 27, n: "Esc"},
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VK_F1: {c: 112, n: "F1"},
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VK_F2: {c: 113, n: "F2"},
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VK_F3: {c: 114, n: "F3"},
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VK_F4: {c: 115, n: "F4"},
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VK_F5: {c: 116, n: "F5"},
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VK_F6: {c: 117, n: "F6"},
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VK_F7: {c: 118, n: "F7"},
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VK_F8: {c: 119, n: "F8"},
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VK_F9: {c: 120, n: "F9"},
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VK_F10: {c: 121, n: "F10"},
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VK_F11: {c: 122, n: "F11"},
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VK_F12: {c: 123, n: "F12"},
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VK_SCROLL_LOCK: {c: 145, n: "ScrLck"},
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VK_PAUSE: {c: 19, n: "Pause"},
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VK_QUOTE: {c: 192, n: "'"},
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VK_1: {c: 49, n: "1"},
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VK_2: {c: 50, n: "2"},
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VK_3: {c: 51, n: "3"},
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VK_4: {c: 52, n: "4"},
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VK_5: {c: 53, n: "5"},
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VK_6: {c: 54, n: "6"},
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VK_7: {c: 55, n: "7"},
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VK_8: {c: 56, n: "8"},
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VK_9: {c: 57, n: "9"},
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VK_0: {c: 48, n: "0"},
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VK_MINUS: {c: 189, n: "-"},
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VK_MINUS2: {c: 173, n: "-"},
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VK_EQUALS: {c: 187, n: "="},
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VK_EQUALS2: {c: 61, n: "="},
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VK_BACK_SPACE: {c: 8, n: "Bkspc"},
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VK_TAB: {c: 9, n: "Tab"},
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VK_Q: {c: 81, n: "Q"},
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VK_W: {c: 87, n: "W"},
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VK_E: {c: 69, n: "E"},
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VK_R: {c: 82, n: "R"},
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VK_T: {c: 84, n: "T"},
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VK_Y: {c: 89, n: "Y"},
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VK_U: {c: 85, n: "U"},
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VK_I: {c: 73, n: "I"},
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VK_O: {c: 79, n: "O"},
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VK_P: {c: 80, n: "P"},
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VK_ACUTE: {c: 219, n: "´"},
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VK_OPEN_BRACKET: {c: 221, n: "["},
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VK_CLOSE_BRACKET: {c: 220, n: "]"},
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VK_CAPS_LOCK: {c: 20, n: "CpsLck"},
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VK_A: {c: 65, n: "A"},
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VK_S: {c: 83, n: "S"},
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VK_D: {c: 68, n: "D"},
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VK_F: {c: 70, n: "F"},
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VK_G: {c: 71, n: "G"},
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VK_H: {c: 72, n: "H"},
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VK_J: {c: 74, n: "J"},
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VK_K: {c: 75, n: "K"},
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VK_L: {c: 76, n: "L"},
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VK_CEDILLA: {c: 186, n: "Ç"},
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VK_TILDE: {c: 222, n: "~"},
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VK_ENTER: {c: 13, n: "Enter"},
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VK_SHIFT: {c: 16, n: "Shift"},
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VK_BACK_SLASH: {c: 226, n: "\\"},
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VK_Z: {c: 90, n: "Z"},
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VK_X: {c: 88, n: "X"},
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VK_C: {c: 67, n: "C"},
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VK_V: {c: 86, n: "V"},
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VK_B: {c: 66, n: "B"},
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VK_N: {c: 78, n: "N"},
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VK_M: {c: 77, n: "M"},
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VK_COMMA: {c: 188, n: "] ="},
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VK_PERIOD: {c: 190, n: "."},
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VK_SEMICOLON: {c: 191, n: ";"},
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VK_SLASH: {c: 193, n: "/"},
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VK_CONTROL: {c: 17, n: "Ctrl"},
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VK_ALT: {c: 18, n: "Alt"},
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VK_SPACE: {c: 32, n: "Space"},
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VK_INSERT: {c: 45, n: "Ins"},
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VK_DELETE: {c: 46, n: "Del"},
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VK_HOME: {c: 36, n: "Home"},
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VK_END: {c: 35, n: "End"},
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VK_PAGE_UP: {c: 33, n: "PgUp"},
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VK_PAGE_DOWN: {c: 34, n: "PgDown"},
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VK_UP: {c: 38, n: "Up"},
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VK_DOWN: {c: 40, n: "Down"},
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VK_LEFT: {c: 37, n: "Left"},
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VK_RIGHT: {c: 39, n: "Right"},
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VK_NUM_LOCK: {c: 144, n: "Num"},
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VK_DIVIDE: {c: 111, n: "Num /"},
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VK_MULTIPLY: {c: 106, n: "Num *"},
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VK_SUBTRACT: {c: 109, n: "Num -"},
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VK_ADD: {c: 107, n: "Num +"},
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VK_DECIMAL: {c: 194, n: "Num ."},
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VK_NUMPAD0: {c: 96, n: "Num 0"},
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VK_NUMPAD1: {c: 97, n: "Num 1"},
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VK_NUMPAD2: {c: 98, n: "Num 2"},
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VK_NUMPAD3: {c: 99, n: "Num 3"},
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VK_NUMPAD4: {c: 100, n: "Num 4"},
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VK_NUMPAD5: {c: 101, n: "Num 5"},
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VK_NUMPAD6: {c: 102, n: "Num 6"},
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VK_NUMPAD7: {c: 103, n: "Num 7"},
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VK_NUMPAD8: {c: 104, n: "Num 8"},
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VK_NUMPAD9: {c: 105, n: "Num 9"},
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VK_NUMPAD_CENTER: {c: 12, n: "Num Cntr"}
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};
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function _metakeyflags(e) {
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return (e.shiftKey?2:0) | (e.ctrlKey?4:0) | (e.altKey?8:0) | (e.metaKey?16:0);
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}
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export function setKeyboardFromMap(video, switches, map, func?) {
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video.setKeyboardEvents(function(key,code,flags) {
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var o = map[key];
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if (o && func) {
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func(o, key, code, flags);
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}
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if (o) {
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//console.log(key,code,flags,o);
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var mask = o.mask;
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if (mask < 0) { // negative mask == active low
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mask = -mask;
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flags ^= 1;
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}
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if (flags & 1) {
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switches[o.index] |= mask;
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} else {
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switches[o.index] &= ~mask;
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}
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}
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});
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}
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export function makeKeycodeMap(table) {
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var map = {};
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for (var i=0; i<table.length; i++) {
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var entry = table[i];
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map[entry[0].c] = {index:entry[1], mask:entry[2]};
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}
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return map;
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}
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export function padBytes(data, len) {
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if (data.length > len) {
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throw Error("Data too long, " + data.length + " > " + len);
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}
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var r = new RAM(len);
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r.mem.set(data);
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return r.mem;
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}
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type AddressReadWriteFn = ((a:number) => number) | ((a:number,v:number) => void);
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type AddressDecoderEntry = [number, number, number, AddressReadWriteFn];
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type AddressDecoderOptions = {gmask?:number};
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// TODO: better performance, check values
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export function AddressDecoder(table : AddressDecoderEntry[], options?:AddressDecoderOptions) {
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var self = this;
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function makeFunction(lo, hi) {
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var s = "";
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if (options && options.gmask) {
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s += "a&=" + options.gmask + ";";
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}
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for (var i=0; i<table.length; i++) {
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var entry = table[i];
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var start = entry[0];
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var end = entry[1];
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var mask = entry[2];
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var func = entry[3];
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self['__fn'+i] = func;
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s += "if (a>=" + start + " && a<="+end + "){";
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if (mask) s += "a&="+mask+";";
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s += "return this.__fn"+i+"(a,v)&0xff;}\n";
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}
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s += "return 0;"; // TODO: noise()?
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return new Function('a', 'v', s);
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}
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return makeFunction(0x0, 0xffff).bind(self);
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}
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export function newAddressDecoder(table : AddressDecoderEntry[], options?:AddressDecoderOptions) : (a:number,v?:number) => number {
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return new (AddressDecoder as any)(table, options);
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}
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// STACK DUMP
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declare var addr2symbol; // address to symbol name map (TODO: import)
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function lookupSymbol(addr) {
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var start = addr;
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var foundsym;
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while (addr >= 0) {
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var sym = addr2symbol[addr];
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if (sym && sym.startsWith('_')) { // return first C symbol we find
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return addr2symbol[addr] + " + " + (start-addr);
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} else if (sym && !foundsym) { // cache first non-C symbol found
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foundsym = sym;
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}
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addr--;
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}
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return foundsym || "";
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}
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export function dumpStackToString(mem:number[], start:number, end:number, sp:number) : string {
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var s = "";
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var nraw = 0;
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//s = dumpRAM(mem.slice(start,start+end+1), start, end-start+1);
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while (sp < end) {
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sp++;
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// see if there's a JSR on the stack here
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// TODO: make work with roms and memory maps
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var addr = mem[sp] + mem[sp+1]*256;
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var opcode = mem[addr-2]; // might be out of bounds
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if (opcode == 0x20) { // JSR
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s += "\n$" + hex(sp) + ": ";
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s += hex(addr,4) + " " + lookupSymbol(addr);
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sp++;
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nraw = 0;
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} else {
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if (nraw == 0)
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s += "\n$" + hex(sp) + ": ";
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s += hex(mem[sp+1]) + " ";
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if (++nraw == 8) nraw = 0;
|
||
}
|
||
}
|
||
return s+"\n";
|
||
}
|