415 lines
13 KiB
TypeScript
415 lines
13 KiB
TypeScript
"use strict";
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import { Platform, Base6502Platform, BaseMAMEPlatform, getOpcodeMetadata_6502, cpuStateToLongString_6502, getToolForFilename_6502, dumpStackToString, ProfilerOutput } from "../baseplatform";
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import { PLATFORMS, RAM, newAddressDecoder, padBytes, noise, setKeyboardFromMap, AnimationTimer, RasterVideo, Keys, makeKeycodeMap, dumpRAM, KeyFlags, EmuHalt } from "../emu";
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import { hex, lpad, lzgmini, byteArrayToString } from "../util";
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import { CodeAnalyzer_nes } from "../analysis";
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import { SampleAudio } from "../audio";
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declare var jsnes : any;
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const JSNES_PRESETS = [
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{id:'hello.c', name:'Hello World'},
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{id:'scroll.c', name:'Scrolling'},
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{id:'vrambuffer.c', name:'VRAM Buffer'},
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{id:'sprites.c', name:'Sprites'},
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{id:'metasprites.c', name:'Metasprites'},
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{id:'flicker.c', name:'Flickering Sprites'},
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{id:'metacursor.c', name:'Controllers'},
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{id:'rletitle.c', name:'Title Screen RLE'},
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{id:'statusbar.c', name:'Split Status Bar'},
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{id:'horizmask.c', name:'Offscreen Scrolling'},
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{id:'monobitmap.c', name:'Monochrome Bitmap'},
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{id:'aputest.c', name:'Sound Tester'},
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{id:'music.c', name:'Music Player'},
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{id:'siegegame.c', name:'Siege Game'},
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{id:'shoot2.c', name:'Solarian Game'},
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{id:'climber.c', name:'Platform Game'},
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{id:'fami.c', name:'Famitone Demo'},
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{id:'bankswitch.c', name:'Bank Switching'},
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{id:'irq.c', name:'IRQ Scanline Counter'},
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{id:'ex0.asm', name:'Initialization (ASM)'},
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{id:'ex1.asm', name:'Hello World (ASM)'},
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{id:'ex2.asm', name:'Scrolling Demo (ASM)'},
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{id:'ex3.asm', name:'Sprite Demo (ASM)'},
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{id:'ex4.asm', name:'Controller Demo (ASM)'},
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{id:'musicdemo.asm', name:'Famitone Demo (ASM)'},
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{id:'scrollrt.asm', name:'Line-by-line Scrolling (ASM)'},
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{id:'xyscroll.asm', name:'XY Split Scrolling (ASM)'},
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];
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/// JSNES
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const JSNES_KEYCODE_MAP = makeKeycodeMap([
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[Keys.VK_X, 0, 0],
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[Keys.VK_Z, 0, 1],
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[Keys.VK_SPACE, 0, 2],
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[Keys.VK_ENTER, 0, 3],
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[Keys.VK_UP, 0, 4],
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[Keys.VK_DOWN, 0, 5],
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[Keys.VK_LEFT, 0, 6],
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[Keys.VK_RIGHT, 0, 7],
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[Keys.VK_Q, 1, 0],
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[Keys.VK_E, 1, 1],
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[Keys.VK_4, 1, 2],
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[Keys.VK_3, 1, 3],
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[Keys.VK_W, 1, 4],
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[Keys.VK_S, 1, 5],
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[Keys.VK_A, 1, 6],
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[Keys.VK_D, 1, 7],
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]);
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class JSNESPlatform extends Base6502Platform implements Platform {
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mainElement;
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nes;
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video;
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audio;
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timer;
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audioFrequency = 44030; //44100
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frameindex = 0;
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ntvideo;
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ntlastbuf;
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constructor(mainElement) {
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super();
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this.mainElement = mainElement;
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}
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getPresets() { return JSNES_PRESETS; }
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start() {
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this.debugPCDelta = 1;
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var debugbar = $("<div>").appendTo(this.mainElement);
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this.audio = new SampleAudio(this.audioFrequency);
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this.video = new RasterVideo(this.mainElement,256,224,{overscan:true});
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this.video.create();
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// debugging view
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this.ntvideo = new RasterVideo(this.mainElement,512,480,{overscan:false});
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this.ntvideo.create();
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$(this.ntvideo.canvas).hide();
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this.ntlastbuf = new Uint32Array(0x1000);
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// toggle buttons (TODO)
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$('<button>').text("Video").appendTo(debugbar).click(() => { $(this.video.canvas).toggle() });
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$('<button>').text("Nametable").appendTo(debugbar).click(() => { $(this.ntvideo.canvas).toggle() });
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var idata = this.video.getFrameData();
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this.nes = new jsnes.NES({
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onFrame: (frameBuffer : number[]) => {
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for (var i=0; i<frameBuffer.length; i++)
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idata[i] = frameBuffer[i] | 0xff000000;
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this.video.updateFrame();
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this.frameindex++;
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this.updateDebugViews();
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},
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onAudioSample: (left:number, right:number) => {
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if (this.frameindex < 10)
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this.audio.feedSample(0, 1); // avoid popping at powerup
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else
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this.audio.feedSample(left+right, 1);
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},
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onStatusUpdate: function(s) {
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console.log(s);
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},
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//TODO: onBatteryRamWrite
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});
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//this.nes.ppu.showSpr0Hit = true;
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//this.nes.ppu.clipToTvSize = false;
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this.nes.stop = () => {
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// TODO: trigger breakpoint
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console.log(this.nes.cpu.toJSON());
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throw new EmuHalt("CPU STOPPED @ PC $" + hex(this.nes.cpu.REG_PC));
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};
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// insert debug hook
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this.nes.cpu._emulate = this.nes.cpu.emulate;
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this.nes.cpu.emulate = () => {
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var cycles = this.nes.cpu._emulate();
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this.evalDebugCondition();
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return cycles;
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}
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this.timer = new AnimationTimer(60, this.nextFrame.bind(this));
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// set keyboard map
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setKeyboardFromMap(this.video, [], JSNES_KEYCODE_MAP, (o,key,code,flags) => {
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if (flags & KeyFlags.KeyDown)
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this.nes.buttonDown(o.index+1, o.mask); // controller, button
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else if (flags & KeyFlags.KeyUp)
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this.nes.buttonUp(o.index+1, o.mask); // controller, button
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});
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//var s = ''; nes.ppu.palTable.curTable.forEach((rgb) => { s += "0x"+hex(rgb,6)+", "; }); console.log(s);
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}
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advance(novideo : boolean) {
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this.nes.frame();
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}
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updateDebugViews() {
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// don't update if view is hidden
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if (! $(this.ntvideo.canvas).is(":visible"))
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return;
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var a = 0;
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var attraddr = 0;
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var idata = this.ntvideo.getFrameData();
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var baseTile = this.nes.ppu.regS === 0 ? 0 : 256;
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for (var row=0; row<60; row++) {
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for (var col=0; col<64; col++) {
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a = 0x2000 + (col&31) + ((row%30)*32);
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if (col >= 32) a += 0x400;
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if (row >= 30) a += 0x800;
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var name = this.nes.ppu.mirroredLoad(a) + baseTile;
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var t = this.nes.ppu.ptTile[name];
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attraddr = (a & 0x2c00) | 0x3c0 | (a & 0x0C00) | ((a >> 4) & 0x38) | ((a >> 2) & 0x07);
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var attr = this.nes.ppu.mirroredLoad(attraddr);
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var tag = name ^ (attr<<9) ^ 0x80000000;
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if (tag != this.ntlastbuf[a & 0xfff]) {
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this.ntlastbuf[a & 0xfff] = tag;
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var i = row*64*8*8 + col*8;
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var j = 0;
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var attrshift = (col&2) + ((a&0x40)>>4);
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var coloradd = ((attr >> attrshift) & 3) << 2;
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for (var y=0; y<8; y++) {
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for (var x=0; x<8; x++) {
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var color = t.pix[j++];
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if (color) color += coloradd;
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var rgb = this.nes.ppu.imgPalette[color];
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idata[i++] = rgb | 0xff000000;
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}
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i += 64*8-8;
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}
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}
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}
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}
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this.ntvideo.updateFrame();
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}
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loadROM(title, data) {
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var romstr = byteArrayToString(data);
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this.nes.loadROM(romstr);
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this.frameindex = 0;
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}
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newCodeAnalyzer() {
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return new CodeAnalyzer_nes(this);
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}
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getOriginPC() { // TODO: is actually NMI
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return (this.readAddress(0xfffa) | (this.readAddress(0xfffb) << 8)) & 0xffff;
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}
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getDefaultExtension() { return ".c"; };
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reset() {
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//this.nes.cpu.reset(); // doesn't work right, crashes
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this.nes.cpu.requestIrq(this.nes.cpu.IRQ_RESET);
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}
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isRunning() {
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return this.timer.isRunning();
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}
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pause() {
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this.timer.stop();
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this.audio.stop();
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}
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resume() {
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this.timer.start();
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this.audio.start();
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}
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runToVsync() {
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var frame0 = this.frameindex;
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this.runEval((c) => { return this.frameindex>frame0; });
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}
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getRasterScanline() : number {
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return this.nes.ppu.scanline;
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}
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readVRAMAddress(addr : number) : number {
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return this.nes.ppu.vramMem[addr & 0x7fff];
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}
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getCPUState() {
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var c = this.nes.cpu.toJSON();
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this.copy6502REGvars(c);
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return c;
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}
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// TODO don't need to save ROM?
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saveState() {
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//var s = $.extend(true, {}, this.nes);
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var s = this.nes.toJSON();
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s.c = s.cpu;
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this.copy6502REGvars(s.c);
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s.b = s.cpu.mem = s.cpu.mem.slice(0);
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s.ppu.vramMem = s.ppu.vramMem.slice(0);
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s.ppu.spriteMem = s.ppu.spriteMem.slice(0);
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s.ctrl = this.saveControlsState();
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return s;
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}
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loadState(state) {
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this.unfixPC(state.cpu);
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this.nes.fromJSON(state);
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this.fixPC(state.cpu);
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//this.nes.cpu.fromJSON(state.cpu);
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//this.nes.mmap.fromJSON(state.mmap);
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//this.nes.ppu.fromJSON(state.ppu);
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this.nes.cpu.mem = state.cpu.mem.slice(0);
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this.nes.ppu.vramMem = state.ppu.vramMem.slice(0);
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this.nes.ppu.spriteMem = state.ppu.spriteMem.slice(0);
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this.loadControlsState(state.ctrl);
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//$.extend(this.nes, state);
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}
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saveControlsState() {
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return {
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c1: this.nes.controllers[1].state.slice(0),
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c2: this.nes.controllers[2].state.slice(0),
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};
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}
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loadControlsState(state) {
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this.nes.controllers[1].state = state.c1;
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this.nes.controllers[2].state = state.c2;
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}
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readAddress(addr) {
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return this.nes.cpu.mem[addr] & 0xff;
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}
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copy6502REGvars(c) {
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c.T = 0;
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c.PC = c.REG_PC;
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this.fixPC(c);
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c.A = c.REG_ACC;
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c.X = c.REG_X;
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c.Y = c.REG_Y;
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c.SP = c.REG_SP & 0xff;
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c.Z = c.F_ZERO;
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c.N = c.F_SIGN;
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c.V = c.F_OVERFLOW;
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c.D = c.F_DECIMAL;
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c.C = c.F_CARRY;
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c.I = c.F_INTERRUPT;
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c.R = 1;
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c.o = this.readAddress(c.PC+1);
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return c;
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}
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getDebugCategories() {
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return super.getDebugCategories().concat(['PPU','Mapper']);
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}
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getDebugInfo(category, state) {
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switch (category) {
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case 'PPU': return this.ppuStateToLongString(state.ppu, state.b);
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case 'Mapper': return this.mapperStateToLongString(state.mmap, state.b);
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default: return super.getDebugInfo(category, state);
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}
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}
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ppuStateToLongString(ppu, mem) {
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var s = '';
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var PPUFLAGS = [
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["f_nmiOnVblank","NMI_ON_VBLANK"],
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["f_spVisibility","SPRITES"],
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["f_spClipping","NO_CLIP_SPRITES"],
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["f_dispType","MONOCHROME"],
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["f_bgVisibility","BACKGROUND"],
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["f_bgClipping","NO_CLIP_BACKGROUND"],
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];
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for (var i=0; i<PPUFLAGS.length; i++) {
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var flag = PPUFLAGS[i];
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s += (ppu[flag[0]] ? flag[1] : "-") + " ";
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if (i==2 || i==5) s += "\n";
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}
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var status = mem[0x2002];
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s += "\n Status ";
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s += (status & 0x80) ? "VBLANK " : "- ";
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s += (status & 0x40) ? "SPRITE0HIT " : "- ";
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s += "\n";
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if (ppu.f_color)
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s += " Tint " + ((ppu.f_color&1)?"RED ":"") + ((ppu.f_color&2)?"BLUE ":"") + ((ppu.f_color&4)?"GREEN ":"") + "\n";
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if (ppu.f_spVisibility) {
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s += "SprSize " + (ppu.f_spriteSize ? "8x16" : "8x8") + "\n";
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s += "SprBase $" + (ppu.f_spPatternTable ? "1000" : "0000") + "\n";
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}
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if (ppu.f_bgVisibility) {
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s += " BgBase $" + (ppu.f_bgPatternTable ? "1000" : "0000") + "\n";
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s += " NTBase $" + hex(ppu.f_nTblAddress*0x400+0x2000) + "\n";
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s += "AddrInc " + (ppu.f_addrInc ? "32" : "1") + "\n";
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}
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var scrollX = ppu.regFH + ppu.regHT*8;
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var scrollY = ppu.regFV + ppu.regVT*8;
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s += "ScrollX $" + hex(scrollX) + " (" + ppu.regHT + " * 8 + " + ppu.regFH + " = " + scrollX + ")\n";
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s += "ScrollY $" + hex(scrollY) + " (" + ppu.regVT + " * 8 + " + ppu.regFV + " = " + scrollY + ")\n";
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s += " Vstart $" + hex(ppu.vramTmpAddress,4) + "\n";
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s += "\n";
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s += " Scan Y: " + ppu.scanline + " X: " + ppu.curX + "\n";
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s += " VRAM " + (ppu.firstWrite?"@":"?") + " $" + hex(ppu.vramAddress,4) + "\n";
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/*
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var PPUREGS = [
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'cntFV',
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'cntV',
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'cntH',
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'cntVT',
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'cntHT',
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'regV',
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'regH',
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'regS',
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];
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s += "\n";
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for (var i=0; i<PPUREGS.length; i++) {
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var reg = PPUREGS[i];
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s += lpad(reg.toUpperCase(),7) + " $" + hex(ppu[reg]) + " (" + ppu[reg] + ")\n";
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}
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*/
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return s;
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}
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mapperStateToLongString(mmap, mem) {
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//console.log(mmap, mem);
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var s = "";
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if (this.nes.rom) {
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s += "Mapper " + this.nes.rom.mapperType + "\n";
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}
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if (mmap.irqCounter !== undefined) {
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s += "\nIRQ Counter: " + mmap.irqCounter;
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s += "\n IRQ Latch: " + mmap.irqLatchValue;
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s += "\n IRQ Reload: " + mmap.irqReload;
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s += "\n IRQ Enable: " + mmap.irqEnable;
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s += "\n PRG Select: " + mmap.prgAddressSelect;
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s += "\n CHR Select: " + mmap.chrAddressSelect;
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}
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s += "\n";
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return s;
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}
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}
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/// MAME support
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class NESMAMEPlatform extends BaseMAMEPlatform implements Platform {
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start() {
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}
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loadROM(title, data) {
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if (!this.started) {
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this.startModule(this.mainElement, {
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jsfile:'mamenes.js',
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//cfgfile:'nes.cfg',
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driver:'nes',
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width:256,
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height:240,
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romfn:'/emulator/cart.nes',
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romdata:new Uint8Array(data),
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preInit:function(_self) {
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},
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});
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} else {
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// look at iNES header for PRG and CHR ROM lengths
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var prgromlen = data[4] * 0x4000;
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var chrromlen = data[5] * 0x2000;
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this.loadROMFile(data);
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this.loadRegion(":nes_slot:cart:prg_rom", data.slice(0x10, 0x10+prgromlen));
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this.loadRegion(":nes_slot:cart:chr_rom", data.slice(0x10+prgromlen, 0x10+prgromlen+chrromlen));
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}
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}
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getPresets() { return JSNES_PRESETS; }
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getOpcodeMetadata = getOpcodeMetadata_6502;
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getToolForFilename = getToolForFilename_6502;
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getDefaultExtension() { return ".c"; };
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}
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///
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PLATFORMS['nes'] = JSNESPlatform;
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PLATFORMS['nes.mame'] = NESMAMEPlatform;
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