mirror of
https://github.com/sehugg/8bitworkshop.git
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galaxian: updated to use Machine interface, fixed apple2 test
This commit is contained in:
Steven Hugg
parent
d068dc0433
commit
0f284531db
@ -511,21 +511,38 @@ export class SampledAudio {
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import { SampledAudioSink } from "./devices";
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interface TssChannel {
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setBufferLength(len : number) : void;
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setSampleRate(rate : number) : void;
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getBuffer() : number[];
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generate(numSamples : number) : void;
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}
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export class TssChannelAdapter {
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channel;
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channels : TssChannel[];
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audioGain = 1.0 / 8192;
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constructor(channel, oversample:number, sampleRate:number) {
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this.channel = channel;
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channel.setBufferLength(oversample*2);
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channel.setSampleRate(sampleRate);
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bufferLength : number;
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constructor(chans, oversample:number, sampleRate:number) {
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this.bufferLength = oversample * 2;
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this.channels = chans.generate ? [chans] : chans; // array or single channel
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this.channels.forEach((c) => {
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c.setBufferLength(this.bufferLength);
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c.setSampleRate(sampleRate);
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});
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}
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generate(sink:SampledAudioSink) {
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var buf = this.channel.getBuffer();
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var l = buf.length;
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this.channel.generate(l);
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for (let i=0; i<l; i+=2)
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sink.feedSample(buf[i] * this.audioGain, 1);
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//if (Math.random() < 0.001) console.log(sink);
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var l = this.bufferLength;
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var bufs = this.channels.map((ch) => ch.getBuffer());
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this.channels.forEach((ch) => {
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ch.generate(l);
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});
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for (let i=0; i<l; i+=2) {
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var total = 0;
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bufs.forEach((buf) => total += buf[i]);
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sink.feedSample(total * this.audioGain, 1);
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};
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}
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}
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@ -33,6 +33,7 @@ interface AppleIIState extends AppleIIStateBase, AppleIIControlsState {
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interface SlotDevice extends Bus {
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readROM(address: number) : number;
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readConst(address: number) : number;
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}
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export class AppleII extends BasicScanlineMachine {
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@ -81,6 +82,9 @@ export class AppleII extends BasicScanlineMachine {
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default: return 0;
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}
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},
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readConst: (a) => {
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return 0;
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},
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read: (a) => { return this.noise(); },
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write: (a,v) => { }
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};
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@ -176,7 +180,7 @@ export class AppleII extends BasicScanlineMachine {
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return this.ram[address + this.bank2rdoffset];
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} else if (address >= 0xc100 && address < 0xc800) {
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var slot = (address >> 8) & 7;
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return (this.slots[slot] && this.slots[slot].readROM(address & 0xff)) | 0;
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return (this.slots[slot] && this.slots[slot].readConst(address & 0xff)) | 0;
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} else {
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return 0;
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}
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@ -231,7 +235,8 @@ export class AppleII extends BasicScanlineMachine {
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return (this.slots[slot-8] && this.slots[slot-8].read(address & 0xf)) | 0;
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}
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} else if (address >= 0xc100 && address < 0xc800) {
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return this.readConst(address);
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var slot = (address >> 8) & 7;
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return (this.slots[slot] && this.slots[slot].readROM(address & 0xff)) | 0;
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}
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return this.noise();
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}
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@ -1091,6 +1096,7 @@ class DiskII extends DiskIIState implements SlotDevice, SavesState<DiskIIState>
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}
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readROM(address) { return DISKII_PROM[address]; }
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readConst(address) { return DISKII_PROM[address]; }
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read(address) { return this.doIO(address, 0); }
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write(address, value) { this.doIO(address, value); }
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406
src/machine/galaxian.ts
Normal file
406
src/machine/galaxian.ts
Normal file
@ -0,0 +1,406 @@
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import { Z80, Z80State } from "../common/cpu/ZilogZ80";
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import { BasicScanlineMachine } from "../common/devices";
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import { KeyFlags, newAddressDecoder, padBytes, noise, Keys, makeKeycodeMap, newKeyboardHandler, EmuHalt } from "../common/emu";
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import { TssChannelAdapter, MasterAudio, AY38910_Audio } from "../common/audio";
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import { hex } from "../common/util";
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const GALAXIAN_KEYCODE_MAP = makeKeycodeMap([
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[Keys.A, 0, 0x10], // P1
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[Keys.LEFT, 0, 0x4],
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[Keys.RIGHT, 0, 0x8],
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[Keys.P2_A, 1, 0x10], // P2
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[Keys.P2_LEFT, 1, 0x4],
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[Keys.P2_RIGHT, 1, 0x8],
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[Keys.SELECT, 0, 0x1],
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[Keys.START, 1, 0x1],
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[Keys.VK_2, 1, 0x2],
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]);
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const SCRAMBLE_KEYCODE_MAP = makeKeycodeMap([
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[Keys.UP, 0, -0x1], // P1
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[Keys.B, 0, -0x2], // fire
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[Keys.VK_7, 0, -0x4], // credit
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[Keys.A, 0, -0x8], // bomb
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[Keys.RIGHT, 0, -0x10],
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[Keys.LEFT, 0, -0x20],
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[Keys.VK_6, 0, -0x40],
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[Keys.SELECT, 0, -0x80],
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[Keys.START, 1, -0x80],
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[Keys.VK_2, 1, -0x40],
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[Keys.DOWN, 2, -0x40],
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//[Keys.VK_UP, 2, -0x10],
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]);
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const bitcolors = [
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0x000021, 0x000047, 0x000097, // red
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0x002100, 0x004700, 0x009700, // green
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0x510000, 0xae0000 // blue
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];
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const GalaxianVideo = function (rom: Uint8Array, vram: Uint8Array, oram: Uint8Array, palette: Uint32Array, options) {
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var gfxBase = options.gfxBase || 0x2800;
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this.missileWidth = options.missileWidth || 4;
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this.missileOffset = options.missileOffset || 0;
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this.showOffscreenObjects = false;
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this.frameCounter = 0;
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this.starsEnabled = 0;
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var stars = [];
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for (var i = 0; i < 256; i++)
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stars[i] = noise();
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this.advanceFrame = function () {
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this.frameCounter = (this.frameCounter + 1) & 0xff;
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}
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this.drawScanline = function (pixels, sl) {
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var pixofs = sl * 264;
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// hide offscreen on left + right (b/c rotated)
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if (!this.showOffscreenObjects && (sl < 16 || sl >= 240)) {
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for (var i = 0; i < 264; i++)
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pixels[pixofs + i] = 0xff000000;
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return; // offscreen
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}
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// draw tiles
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var outi = pixofs; // starting output pixel in frame buffer
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for (var xx = 0; xx < 32; xx++) {
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var xofs = xx;
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var scroll = oram[xofs * 2]; // even entries control scroll position
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var attrib = oram[xofs * 2 + 1]; // odd entries control the color base
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var sl2 = (sl + scroll) & 0xff;
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var vramofs = (sl2 >> 3) << 5; // offset in VRAM
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var yy = sl2 & 7; // y offset within tile
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var tile = vram[vramofs + xofs]; // TODO: why undefined?
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var color0 = (attrib & 7) << 2;
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var addr = gfxBase + (tile << 3) + yy;
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var data1 = rom[addr];
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var data2 = rom[addr + 0x800];
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for (var i = 0; i < 8; i++) {
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var bm = 128 >> i;
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var color = color0 + ((data1 & bm) ? 1 : 0) + ((data2 & bm) ? 2 : 0);
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pixels[outi] = palette[color];
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outi++;
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}
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}
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// draw sprites
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for (var sprnum = 7; sprnum >= 0; sprnum--) {
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var base = (sprnum << 2) + 0x40;
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var base0 = oram[base];
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var sy = 240 - (base0 - ((sprnum < 3) ? 1 : 0)); // the first three sprites match against y-1
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var yy = (sl - sy);
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if (yy >= 0 && yy < 16) {
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var sx = oram[base + 3] + 1; // +1 pixel offset from tiles
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if (sx == 0 && !this.showOffscreenObjects) {
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continue; // drawn off-buffer
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}
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var code = oram[base + 1];
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var flipx = code & 0x40; // TODO: flipx
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if (code & 0x80) // flipy
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yy = 15 - yy;
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code &= 0x3f;
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var color0 = (oram[base + 2] & 7) << 2;
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var addr = gfxBase + (code << 5) + (yy < 8 ? yy : yy + 8);
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outi = pixofs + sx; //<< 1
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var data1 = rom[addr];
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var data2 = rom[addr + 0x800];
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for (var i = 0; i < 8; i++) {
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var bm = 128 >> i;
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var color = ((data1 & bm) ? 1 : 0) + ((data2 & bm) ? 2 : 0);
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if (color)
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pixels[flipx ? (outi + 15 - i) : (outi + i)] = palette[color0 + color];
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}
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var data1 = rom[addr + 8];
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var data2 = rom[addr + 0x808];
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for (var i = 0; i < 8; i++) {
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var bm = 128 >> i;
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var color = ((data1 & bm) ? 1 : 0) + ((data2 & bm) ? 2 : 0);
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if (color)
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pixels[flipx ? (outi + 7 - i) : (outi + i + 8)] = palette[color0 + color];
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}
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}
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}
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// draw bullets/shells
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var shell = 0xff;
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var missile = 0xff;
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for (var which = 0; which < 8; which++) {
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var sy = oram[0x60 + (which << 2) + 1];
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if (((sy + sl - ((which < 3) ? 1 : 0)) & 0xff) == 0xff) {
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if (which != 7)
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shell = which;
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else
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missile = which;
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}
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}
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for (var i = 0; i < 2; i++) {
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which = i ? missile : shell;
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if (which != 0xff) {
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var sx = 255 - oram[0x60 + (which << 2) + 3];
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var outi = pixofs + sx - this.missileOffset;
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var col = which == 7 ? 0xffffff00 : 0xffffffff;
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for (var j = 0; j < this.missileWidth; j++)
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pixels[outi++] = col;
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}
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}
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// draw stars
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if (this.starsEnabled) {
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var starx = ((this.frameCounter + stars[sl & 0xff]) & 0xff);
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if ((starx + sl) & 0x10) {
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var outi = pixofs + starx;
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if ((pixels[outi] & 0xffffff) == 0) {
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pixels[outi] = palette[sl & 0x1f];
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}
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}
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}
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}
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}
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const XTAL = 18432000.0;
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const scanlinesPerFrame = 264;
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const cpuFrequency = XTAL / 6; // 3.072 MHz
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const hsyncFrequency = XTAL / 3 / 192 / 2; // 16 kHz
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const vsyncFrequency = hsyncFrequency / 132 / 2; // 60.606060 Hz
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const vblankDuration = 1 / vsyncFrequency * (20 / 132); // 2500 us
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const cpuCyclesPerLine = cpuFrequency / hsyncFrequency;
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const INITIAL_WATCHDOG = 8;
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const audioOversample = 2;
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const audioSampleRate = 60 * scanlinesPerFrame; // why not hsync?
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export class GalaxianMachine extends BasicScanlineMachine {
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options = {};
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palBase = 0x3800;
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keyMap = GALAXIAN_KEYCODE_MAP;
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cpuFrequency = cpuFrequency;
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canvasWidth = 264;
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numTotalScanlines = 264;
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numVisibleScanlines = 264;
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defaultROMSize = 0x4000;
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sampleRate = audioSampleRate * audioOversample;
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cpuCyclesPerLine = cpuCyclesPerLine | 0;
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rotate = 90;
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cpu: Z80 = new Z80();
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ram = new Uint8Array(0x800);
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vram = new Uint8Array(0x400);
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oram = new Uint8Array(0x100);
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palette: Uint32Array;
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gfx; // GalaxianVideo
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audioadapter;
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psg1: AY38910_Audio;
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psg2: AY38910_Audio;
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watchdog_counter: number = 0;
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interruptEnabled: number = 0;
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defaultInputs: number[] = [0xe, 0x8, 0x0];
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constructor() {
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super();
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var audio = new MasterAudio();
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this.psg1 = new AY38910_Audio(audio);
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this.psg2 = new AY38910_Audio(audio);
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this.audioadapter = new TssChannelAdapter([this.psg1.psg, this.psg2.psg], audioOversample, this.sampleRate);
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this.init();
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}
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init() {
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this.rom = new Uint8Array(this.defaultROMSize);
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this.palette = new Uint32Array(new ArrayBuffer(32 * 4));
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this.gfx = new GalaxianVideo(this.rom, this.vram, this.oram, this.palette, this.options);
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this.connectCPUMemoryBus(this);
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this.connectCPUIOBus(this.newIOBus());
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this.inputs.set(this.defaultInputs);
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this.handler = newKeyboardHandler(this.inputs, this.keyMap);
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}
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read = newAddressDecoder([
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[0x0000, 0x3fff, 0, (a) => { return this.rom ? this.rom[a] : null; }],
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[0x4000, 0x47ff, 0x3ff, (a) => { return this.ram[a]; }],
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[0x5000, 0x57ff, 0x3ff, (a) => { return this.vram[a]; }],
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[0x5800, 0x5fff, 0xff, (a) => { return this.oram[a]; }],
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[0x6000, 0x6000, 0, (a) => { return this.inputs[0]; }],
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[0x6800, 0x6800, 0, (a) => { return this.inputs[1]; }],
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[0x7000, 0x7000, 0, (a) => { return this.inputs[2]; }],
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[0x7800, 0x7800, 0, (a) => { this.watchdog_counter = INITIAL_WATCHDOG; }],
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]);
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readConst(a : number) {
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return (a < 0x7000) ? this.read(a) : null;
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}
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write = newAddressDecoder([
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[0x4000, 0x47ff, 0x3ff, (a, v) => { this.ram[a] = v; }],
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[0x5000, 0x57ff, 0x3ff, (a, v) => { this.vram[a] = v; }],
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[0x5800, 0x5fff, 0xff, (a, v) => { this.oram[a] = v; }],
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//[0x6004, 0x6007, 0x3, function(a,v) => { }], // lfo freq
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//[0x6800, 0x6807, 0x7, function(a,v) => { }], // sound
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//[0x7800, 0x7800, 0x7, function(a,v) => { }], // pitch
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//[0x6000, 0x6003, 0x3, (a, v) => { this.outlatches[a] = v; }],
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[0x7001, 0x7001, 0, (a, v) => { this.interruptEnabled = v & 1; }],
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[0x7004, 0x7004, 0, (a, v) => { this.gfx.starsEnabled = v & 1; }],
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]);
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newIOBus() {
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return {
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read: (addr) => {
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return 0;
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},
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write: (addr, val) => {
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if (addr & 0x1) { this.psg1.selectRegister(val & 0xf); };
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if (addr & 0x2) { this.psg1.setData(val); };
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if (addr & 0x4) { this.psg2.selectRegister(val & 0xf); };
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if (addr & 0x8) { this.psg2.setData(val); };
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}
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};
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}
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reset() {
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super.reset();
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this.psg1.reset();
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this.psg2.reset();
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this.watchdog_counter = INITIAL_WATCHDOG;
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}
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startScanline() {
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this.audio && this.audioadapter && this.audioadapter.generate(this.audio);
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}
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drawScanline() {
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this.gfx.drawScanline(this.pixels, this.scanline);
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}
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advanceFrame(trap) {
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var steps = super.advanceFrame(trap);
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// advance graphics
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this.gfx.advanceFrame();
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// clear bottom of screen?
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if (!this.gfx.showOffscreenObjects) {
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for (var i = 0; i < 264; i++)
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this.pixels.fill(0xff000000, 256 + i * 264, 264 + i * 264);
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}
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// watchdog fired?
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if (this.watchdog_counter-- <= 0) {
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throw new EmuHalt("WATCHDOG FIRED");
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}
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// NMI interrupt @ 0x66
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if (this.interruptEnabled) { this.cpu.NMI(); }
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return steps;
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}
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loadROM(data) {
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this.rom.set(padBytes(data, this.defaultROMSize));
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for (var i = 0; i < 32; i++) {
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var b = this.rom[this.palBase + i];
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this.palette[i] = 0xff000000;
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for (var j = 0; j < 8; j++)
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if (((1 << j) & b))
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this.palette[i] += bitcolors[j];
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}
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}
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loadState(state) {
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super.loadState(state);
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this.vram.set(state.bv);
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this.oram.set(state.bo);
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this.watchdog_counter = state.wdc;
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this.interruptEnabled = state.ie;
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this.gfx.starsEnabled = state.se;
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this.gfx.frameCounter = state.fc;
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}
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saveState() {
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var state = super.saveState();
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state['bv'] = this.vram.slice(0);
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state['bo'] = this.oram.slice(0);
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state['fc'] = this.gfx.frameCounter;
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state['ie'] = this.interruptEnabled;
|
||||
state['se'] = this.gfx.starsEnabled;
|
||||
state['wdc'] = this.watchdog_counter;
|
||||
return state;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
export class GalaxianScrambleMachine extends GalaxianMachine {
|
||||
|
||||
defaultROMSize = 0x5020;
|
||||
palBase = 0x5000;
|
||||
scramble = true;
|
||||
keyMap = SCRAMBLE_KEYCODE_MAP;
|
||||
options = {
|
||||
gfxBase: 0x4000,
|
||||
missileWidth: 1,
|
||||
missileOffset: 6,
|
||||
};
|
||||
defaultInputs = [0xff, 0xfc, 0xf1];
|
||||
|
||||
constructor() {
|
||||
super();
|
||||
this.init(); // TODO: why do we have to call twice?
|
||||
}
|
||||
|
||||
read = newAddressDecoder([
|
||||
[0x0000, 0x3fff, 0, (a) => { return this.rom[a]; }],
|
||||
[0x4000, 0x47ff, 0x7ff, (a) => { return this.ram[a]; }],
|
||||
[0x4800, 0x4fff, 0x3ff, (a) => { return this.vram[a]; }],
|
||||
[0x5000, 0x5fff, 0xff, (a) => { return this.oram[a]; }],
|
||||
[0x7000, 0x7000, 0, (a) => { this.watchdog_counter = INITIAL_WATCHDOG; }],
|
||||
[0x7800, 0x7800, 0, (a) => { this.watchdog_counter = INITIAL_WATCHDOG; }],
|
||||
//[0x8000, 0x820f, 0, function(a) { return noise(); }], // TODO: remove
|
||||
[0x8100, 0x8100, 0, (a) => { return this.inputs[0]; }],
|
||||
[0x8101, 0x8101, 0, (a) => { return this.inputs[1]; }],
|
||||
[0x8102, 0x8102, 0, (a) => { return this.inputs[2] | this.scramble_protection_alt_r(); }],
|
||||
[0x8202, 0x8202, 0, (a) => { return this.m_protection_result; }], // scramble (protection)
|
||||
[0x9100, 0x9100, 0, (a) => { return this.inputs[0]; }],
|
||||
[0x9101, 0x9101, 0, (a) => { return this.inputs[1]; }],
|
||||
[0x9102, 0x9102, 0, (a) => { return this.inputs[2] | this.scramble_protection_alt_r(); }],
|
||||
[0x9212, 0x9212, 0, (a) => { return this.m_protection_result; }], // scramble (protection)
|
||||
//[0, 0xffff, 0, function(a) { console.log(hex(a)); return 0; }]
|
||||
]);
|
||||
write = newAddressDecoder([
|
||||
[0x4000, 0x47ff, 0x7ff, (a, v) => { this.ram[a] = v; }],
|
||||
[0x4800, 0x4fff, 0x3ff, (a, v) => { this.vram[a] = v; }],
|
||||
[0x5000, 0x5fff, 0xff, (a, v) => { this.oram[a] = v; }],
|
||||
[0x6801, 0x6801, 0, (a, v) => { this.interruptEnabled = v & 1; /*console.log(a,v,cpu.getPC().toString(16));*/ }],
|
||||
[0x6802, 0x6802, 0, (a, v) => { /* TODO: coin counter */ }],
|
||||
[0x6803, 0x6803, 0, (a, v) => { /* TODO: backgroundColor = (v & 1) ? 0xFF000056 : 0xFF000000; */ }],
|
||||
[0x6804, 0x6804, 0, (a, v) => { this.gfx.starsEnabled = v & 1; }],
|
||||
[0x6808, 0x6808, 0, (a, v) => { this.gfx.missileWidth = v; }], // not on h/w
|
||||
[0x6809, 0x6809, 0, (a, v) => { this.gfx.missileOffset = v; }], // not on h/w
|
||||
[0x8202, 0x8202, 0, this.scramble_protection_w.bind(this)],
|
||||
//[0x8100, 0x8103, 0, function(a,v){ /* PPI 0 */ }],
|
||||
//[0x8200, 0x8203, 0, function(a,v){ /* PPI 1 */ }],
|
||||
//[0, 0xffff, 0, function(a,v) { console.log(hex(a),hex(v)); }]
|
||||
]);
|
||||
|
||||
m_protection_state = 0;
|
||||
m_protection_result = 0;
|
||||
scramble_protection_w(addr, data) {
|
||||
/*
|
||||
This is not fully understood; the low 4 bits of port C are
|
||||
inputs; the upper 4 bits are outputs. Scramble main set always
|
||||
writes sequences of 3 or more nibbles to the low port and
|
||||
expects certain results in the upper nibble afterwards.
|
||||
*/
|
||||
this.m_protection_state = (this.m_protection_state << 4) | (data & 0x0f);
|
||||
switch (this.m_protection_state & 0xfff) {
|
||||
/* scramble */
|
||||
case 0xf09: this.m_protection_result = 0xff; break;
|
||||
case 0xa49: this.m_protection_result = 0xbf; break;
|
||||
case 0x319: this.m_protection_result = 0x4f; break;
|
||||
case 0x5c9: this.m_protection_result = 0x6f; break;
|
||||
|
||||
/* scrambls */
|
||||
case 0x246: this.m_protection_result ^= 0x80; break;
|
||||
case 0xb5f: this.m_protection_result = 0x6f; break;
|
||||
}
|
||||
}
|
||||
scramble_protection_alt_r() {
|
||||
var bit = (this.m_protection_result >> 7) & 1;
|
||||
return (bit << 5) | ((bit ^ 1) << 7);
|
||||
}
|
||||
}
|
||||
@ -1,442 +1,34 @@
|
||||
|
||||
import { Platform, BaseZ80Platform } from "../common/baseplatform";
|
||||
import { PLATFORMS, RAM, newAddressDecoder, padBytes, noise, setKeyboardFromMap, AnimationTimer, RasterVideo, Keys, makeKeycodeMap } from "../common/emu";
|
||||
import { hex } from "../common/util";
|
||||
import { MasterAudio, AY38910_Audio } from "../common/audio";
|
||||
import { Platform } from "../common/baseplatform";
|
||||
import { PLATFORMS } from "../common/emu";
|
||||
import { GalaxianMachine, GalaxianScrambleMachine } from "../machine/galaxian";
|
||||
import { BaseZ80MachinePlatform } from "../common/baseplatform";
|
||||
|
||||
const GALAXIAN_PRESETS = [
|
||||
{ id: 'gfxtest.c', name: 'Graphics Test' },
|
||||
{ id: 'shoot2.c', name: 'Solarian Game' },
|
||||
];
|
||||
|
||||
const GALAXIAN_KEYCODE_MAP = makeKeycodeMap([
|
||||
[Keys.A, 0, 0x10], // P1
|
||||
[Keys.LEFT, 0, 0x4],
|
||||
[Keys.RIGHT, 0, 0x8],
|
||||
[Keys.P2_A, 1, 0x10], // P2
|
||||
[Keys.P2_LEFT, 1, 0x4],
|
||||
[Keys.P2_RIGHT, 1, 0x8],
|
||||
[Keys.SELECT, 0, 0x1],
|
||||
[Keys.START, 1, 0x1],
|
||||
[Keys.VK_2, 1, 0x2],
|
||||
]);
|
||||
class GalaxianPlatform extends BaseZ80MachinePlatform<GalaxianMachine> implements Platform {
|
||||
|
||||
const SCRAMBLE_KEYCODE_MAP = makeKeycodeMap([
|
||||
[Keys.UP, 0, -0x1], // P1
|
||||
[Keys.B, 0, -0x2], // fire
|
||||
[Keys.VK_7, 0, -0x4], // credit
|
||||
[Keys.A, 0, -0x8], // bomb
|
||||
[Keys.RIGHT, 0, -0x10],
|
||||
[Keys.LEFT, 0, -0x20],
|
||||
[Keys.VK_6, 0, -0x40],
|
||||
[Keys.SELECT, 0, -0x80],
|
||||
[Keys.START, 1, -0x80],
|
||||
[Keys.VK_2, 1, -0x40],
|
||||
[Keys.DOWN, 2, -0x40],
|
||||
//[Keys.VK_UP, 2, -0x10],
|
||||
]);
|
||||
|
||||
const GalaxianVideo = function(rom:Uint8Array, vram:RAM, oram:RAM, palette:Uint32Array, options) {
|
||||
|
||||
var gfxBase = options.gfxBase || 0x2800;
|
||||
this.missileWidth = options.missileWidth || 4;
|
||||
this.missileOffset = options.missileOffset || 0;
|
||||
this.showOffscreenObjects = false;
|
||||
this.frameCounter = 0;
|
||||
this.starsEnabled = 0;
|
||||
var stars = [];
|
||||
for (var i = 0; i < 256; i++)
|
||||
stars[i] = noise();
|
||||
|
||||
this.advanceFrame = function() {
|
||||
this.frameCounter = (this.frameCounter + 1) & 0xff;
|
||||
}
|
||||
|
||||
this.drawScanline = function(pixels, sl) {
|
||||
if (sl < 16 && !this.showOffscreenObjects) return; // offscreen
|
||||
if (sl >= 240 && !this.showOffscreenObjects) return; // offscreen
|
||||
// draw tiles
|
||||
var pixofs = sl * 264;
|
||||
var outi = pixofs; // starting output pixel in frame buffer
|
||||
for (var xx = 0; xx < 32; xx++) {
|
||||
var xofs = xx;
|
||||
var scroll = oram.mem[xofs * 2]; // even entries control scroll position
|
||||
var attrib = oram.mem[xofs * 2 + 1]; // odd entries control the color base
|
||||
var sl2 = (sl + scroll) & 0xff;
|
||||
var vramofs = (sl2 >> 3) << 5; // offset in VRAM
|
||||
var yy = sl2 & 7; // y offset within tile
|
||||
var tile = vram.mem[vramofs + xofs]; // TODO: why undefined?
|
||||
var color0 = (attrib & 7) << 2;
|
||||
var addr = gfxBase + (tile << 3) + yy;
|
||||
var data1 = rom[addr];
|
||||
var data2 = rom[addr + 0x800];
|
||||
for (var i = 0; i < 8; i++) {
|
||||
var bm = 128 >> i;
|
||||
var color = color0 + ((data1 & bm) ? 1 : 0) + ((data2 & bm) ? 2 : 0);
|
||||
pixels[outi] = palette[color];
|
||||
outi++;
|
||||
}
|
||||
}
|
||||
// draw sprites
|
||||
for (var sprnum = 7; sprnum >= 0; sprnum--) {
|
||||
var base = (sprnum << 2) + 0x40;
|
||||
var base0 = oram.mem[base];
|
||||
var sy = 240 - (base0 - ((sprnum < 3) ? 1 : 0)); // the first three sprites match against y-1
|
||||
var yy = (sl - sy);
|
||||
if (yy >= 0 && yy < 16) {
|
||||
var sx = oram.mem[base + 3] + 1; // +1 pixel offset from tiles
|
||||
if (sx == 0 && !this.showOffscreenObjects)
|
||||
continue; // drawn off-buffer
|
||||
var code = oram.mem[base + 1];
|
||||
var flipx = code & 0x40; // TODO: flipx
|
||||
if (code & 0x80) // flipy
|
||||
yy = 15 - yy;
|
||||
code &= 0x3f;
|
||||
var color0 = (oram.mem[base + 2] & 7) << 2;
|
||||
var addr = gfxBase + (code << 5) + (yy < 8 ? yy : yy + 8);
|
||||
outi = pixofs + sx; //<< 1
|
||||
var data1 = rom[addr];
|
||||
var data2 = rom[addr + 0x800];
|
||||
for (var i = 0; i < 8; i++) {
|
||||
var bm = 128 >> i;
|
||||
var color = ((data1 & bm) ? 1 : 0) + ((data2 & bm) ? 2 : 0);
|
||||
if (color)
|
||||
pixels[flipx ? (outi + 15 - i) : (outi + i)] = palette[color0 + color];
|
||||
}
|
||||
var data1 = rom[addr + 8];
|
||||
var data2 = rom[addr + 0x808];
|
||||
for (var i = 0; i < 8; i++) {
|
||||
var bm = 128 >> i;
|
||||
var color = ((data1 & bm) ? 1 : 0) + ((data2 & bm) ? 2 : 0);
|
||||
if (color)
|
||||
pixels[flipx ? (outi + 7 - i) : (outi + i + 8)] = palette[color0 + color];
|
||||
}
|
||||
}
|
||||
}
|
||||
// draw bullets/shells
|
||||
var shell = 0xff;
|
||||
var missile = 0xff;
|
||||
for (var which = 0; which < 8; which++) {
|
||||
var sy = oram.mem[0x60 + (which << 2) + 1];
|
||||
if (((sy + sl - ((which < 3) ? 1 : 0)) & 0xff) == 0xff) {
|
||||
if (which != 7)
|
||||
shell = which;
|
||||
else
|
||||
missile = which;
|
||||
}
|
||||
}
|
||||
for (var i = 0; i < 2; i++) {
|
||||
which = i ? missile : shell;
|
||||
if (which != 0xff) {
|
||||
var sx = 255 - oram.mem[0x60 + (which << 2) + 3];
|
||||
var outi = pixofs + sx - this.missileOffset;
|
||||
var col = which == 7 ? 0xffffff00 : 0xffffffff;
|
||||
for (var j = 0; j < this.missileWidth; j++)
|
||||
pixels[outi++] = col;
|
||||
}
|
||||
}
|
||||
// draw stars
|
||||
if (this.starsEnabled) {
|
||||
var starx = ((this.frameCounter + stars[sl & 0xff]) & 0xff);
|
||||
if ((starx + sl) & 0x10) {
|
||||
var outi = pixofs + starx;
|
||||
if ((pixels[outi] & 0xffffff) == 0) {
|
||||
pixels[outi] = palette[sl & 0x1f];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
const _GalaxianPlatform = function(mainElement, options) {
|
||||
options = options || {};
|
||||
var romSize = options.romSize || 0x4000;
|
||||
var palBase = options.palBase || 0x3800;
|
||||
var keyMap = options.keyMap || GALAXIAN_KEYCODE_MAP;
|
||||
|
||||
var cpu;
|
||||
var ram, vram, oram: RAM;
|
||||
var membus, iobus, rom, palette, outlatches;
|
||||
var video, audio, timer, pixels;
|
||||
var psg1, psg2;
|
||||
var inputs;
|
||||
var interruptEnabled = 0;
|
||||
var watchdog_counter;
|
||||
|
||||
var XTAL = 18432000.0;
|
||||
var scanlinesPerFrame = 264;
|
||||
var cpuFrequency = XTAL / 6; // 3.072 MHz
|
||||
var hsyncFrequency = XTAL / 3 / 192 / 2; // 16 kHz
|
||||
var vsyncFrequency = hsyncFrequency / 132 / 2; // 60.606060 Hz
|
||||
var vblankDuration = 1 / vsyncFrequency * (20 / 132); // 2500 us
|
||||
var cpuCyclesPerLine = cpuFrequency / hsyncFrequency;
|
||||
var INITIAL_WATCHDOG = 8;
|
||||
var gfx; // = new GalaxianVideo(rom, vram, oram, palette, options);
|
||||
|
||||
var m_protection_state = 0;
|
||||
var m_protection_result = 0;
|
||||
function scramble_protection_w(addr, data) {
|
||||
/*
|
||||
This is not fully understood; the low 4 bits of port C are
|
||||
inputs; the upper 4 bits are outputs. Scramble main set always
|
||||
writes sequences of 3 or more nibbles to the low port and
|
||||
expects certain results in the upper nibble afterwards.
|
||||
*/
|
||||
m_protection_state = (m_protection_state << 4) | (data & 0x0f);
|
||||
switch (m_protection_state & 0xfff) {
|
||||
/* scramble */
|
||||
case 0xf09: m_protection_result = 0xff; break;
|
||||
case 0xa49: m_protection_result = 0xbf; break;
|
||||
case 0x319: m_protection_result = 0x4f; break;
|
||||
case 0x5c9: m_protection_result = 0x6f; break;
|
||||
|
||||
/* scrambls */
|
||||
case 0x246: m_protection_result ^= 0x80; break;
|
||||
case 0xb5f: m_protection_result = 0x6f; break;
|
||||
}
|
||||
}
|
||||
function scramble_protection_alt_r() {
|
||||
var bit = (m_protection_result >> 7) & 1;
|
||||
return (bit << 5) | ((bit ^ 1) << 7);
|
||||
}
|
||||
|
||||
const bitcolors = [
|
||||
0x000021, 0x000047, 0x000097, // red
|
||||
0x002100, 0x004700, 0x009700, // green
|
||||
0x510000, 0xae0000 // blue
|
||||
];
|
||||
|
||||
class GalaxianPlatform extends BaseZ80Platform implements Platform {
|
||||
|
||||
scanline: number;
|
||||
poller;
|
||||
|
||||
getPresets() {
|
||||
return GALAXIAN_PRESETS;
|
||||
}
|
||||
|
||||
start() {
|
||||
ram = new RAM(0x800);
|
||||
vram = new RAM(0x400);
|
||||
oram = new RAM(0x100);
|
||||
rom = new Uint8Array(romSize);
|
||||
palette = new Uint32Array(new ArrayBuffer(32 * 4));
|
||||
gfx = new GalaxianVideo(rom, vram, oram, palette, options);
|
||||
|
||||
outlatches = new RAM(0x8);
|
||||
if (options.scramble) {
|
||||
inputs = [0xff, 0xfc, 0xf1];
|
||||
membus = {
|
||||
read: newAddressDecoder([
|
||||
[0x0000, 0x3fff, 0, function(a) { return rom ? rom[a] : null; }],
|
||||
[0x4000, 0x47ff, 0x7ff, function(a) { return ram.mem[a]; }],
|
||||
[0x4800, 0x4fff, 0x3ff, function(a) { return vram.mem[a]; }],
|
||||
[0x5000, 0x5fff, 0xff, function(a) { return oram.mem[a]; }],
|
||||
[0x7000, 0x7000, 0, function(a) { watchdog_counter = INITIAL_WATCHDOG; }],
|
||||
[0x7800, 0x7800, 0, function(a) { watchdog_counter = INITIAL_WATCHDOG; }],
|
||||
//[0x8000, 0x820f, 0, function(a) { return noise(); }], // TODO: remove
|
||||
[0x8100, 0x8100, 0, function(a) { return inputs[0]; }],
|
||||
[0x8101, 0x8101, 0, function(a) { return inputs[1]; }],
|
||||
[0x8102, 0x8102, 0, function(a) { return inputs[2] | scramble_protection_alt_r(); }],
|
||||
[0x8202, 0x8202, 0, function(a) { return m_protection_result; }], // scramble (protection)
|
||||
[0x9100, 0x9100, 0, function(a) { return inputs[0]; }],
|
||||
[0x9101, 0x9101, 0, function(a) { return inputs[1]; }],
|
||||
[0x9102, 0x9102, 0, function(a) { return inputs[2] | scramble_protection_alt_r(); }],
|
||||
[0x9212, 0x9212, 0, function(a) { return m_protection_result; }], // scramble (protection)
|
||||
//[0, 0xffff, 0, function(a) { console.log(hex(a)); return 0; }]
|
||||
]),
|
||||
write: newAddressDecoder([
|
||||
[0x4000, 0x47ff, 0x7ff, function(a, v) { ram.mem[a] = v; }],
|
||||
[0x4800, 0x4fff, 0x3ff, function(a, v) { vram.mem[a] = v; }],
|
||||
[0x5000, 0x5fff, 0xff, function(a, v) { oram.mem[a] = v; }],
|
||||
[0x6801, 0x6801, 0, function(a, v) { interruptEnabled = v & 1; /*console.log(a,v,cpu.getPC().toString(16));*/ }],
|
||||
[0x6802, 0x6802, 0, function(a, v) { /* TODO: coin counter */ }],
|
||||
[0x6803, 0x6803, 0, function(a, v) { /* TODO: backgroundColor = (v & 1) ? 0xFF000056 : 0xFF000000; */ }],
|
||||
[0x6804, 0x6804, 0, function(a, v) { gfx.starsEnabled = v & 1; }],
|
||||
[0x6808, 0x6808, 0, function(a, v) { gfx.missileWidth = v; }], // not on h/w
|
||||
[0x6809, 0x6809, 0, function(a, v) { gfx.missileOffset = v; }], // not on h/w
|
||||
[0x8202, 0x8202, 0, scramble_protection_w],
|
||||
//[0x8100, 0x8103, 0, function(a,v){ /* PPI 0 */ }],
|
||||
//[0x8200, 0x8203, 0, function(a,v){ /* PPI 1 */ }],
|
||||
//[0, 0xffff, 0, function(a,v) { console.log(hex(a),hex(v)); }]
|
||||
]),
|
||||
};
|
||||
} else {
|
||||
inputs = [0xe, 0x8, 0x0];
|
||||
membus = {
|
||||
read: newAddressDecoder([
|
||||
[0x0000, 0x3fff, 0, function(a) { return rom ? rom[a] : null; }],
|
||||
[0x4000, 0x47ff, 0x3ff, function(a) { return ram.mem[a]; }],
|
||||
[0x5000, 0x57ff, 0x3ff, function(a) { return vram.mem[a]; }],
|
||||
[0x5800, 0x5fff, 0xff, function(a) { return oram.mem[a]; }],
|
||||
[0x6000, 0x6000, 0, function(a) { return inputs[0]; }],
|
||||
[0x6800, 0x6800, 0, function(a) { return inputs[1]; }],
|
||||
[0x7000, 0x7000, 0, function(a) { return inputs[2]; }],
|
||||
[0x7800, 0x7800, 0, function(a) { watchdog_counter = INITIAL_WATCHDOG; }],
|
||||
]),
|
||||
write: newAddressDecoder([
|
||||
[0x4000, 0x47ff, 0x3ff, function(a, v) { ram.mem[a] = v; }],
|
||||
[0x5000, 0x57ff, 0x3ff, function(a, v) { vram.mem[a] = v; }],
|
||||
[0x5800, 0x5fff, 0xff, function(a, v) { oram.mem[a] = v; }],
|
||||
//[0x6004, 0x6007, 0x3, function(a,v) { }], // lfo freq
|
||||
//[0x6800, 0x6807, 0x7, function(a,v) { }], // sound
|
||||
//[0x7800, 0x7800, 0x7, function(a,v) { }], // pitch
|
||||
[0x6000, 0x6003, 0x3, function(a, v) { outlatches.mem[a] = v; }],
|
||||
[0x7001, 0x7001, 0, function(a, v) { interruptEnabled = v & 1; }],
|
||||
[0x7004, 0x7004, 0, function(a, v) { gfx.starsEnabled = v & 1; }],
|
||||
]),
|
||||
isContended: function() { return false; },
|
||||
};
|
||||
}
|
||||
audio = new MasterAudio();
|
||||
psg1 = new AY38910_Audio(audio);
|
||||
psg2 = new AY38910_Audio(audio);
|
||||
iobus = {
|
||||
read: function(addr) {
|
||||
return 0;
|
||||
},
|
||||
write: function(addr, val) {
|
||||
if (addr & 0x1) { psg1.selectRegister(val & 0xf); };
|
||||
if (addr & 0x2) { psg1.setData(val); };
|
||||
if (addr & 0x4) { psg2.selectRegister(val & 0xf); };
|
||||
if (addr & 0x8) { psg2.setData(val); };
|
||||
}
|
||||
};
|
||||
cpu = this.newCPU(membus, iobus);
|
||||
video = new RasterVideo(mainElement, 264, 264, { rotate: 90 });
|
||||
video.create();
|
||||
var idata = video.getFrameData();
|
||||
this.poller = setKeyboardFromMap(video, inputs, keyMap);
|
||||
pixels = video.getFrameData();
|
||||
timer = new AnimationTimer(60, this.nextFrame.bind(this));
|
||||
}
|
||||
|
||||
pollControls() { this.poller.poll(); }
|
||||
|
||||
readAddress(a) {
|
||||
return (a == 0x7000 || a == 0x7800) ? null : membus.read(a); // ignore watchdog
|
||||
}
|
||||
|
||||
advance(novideo: boolean) : number {
|
||||
var steps = 0;
|
||||
for (var sl = 0; sl < scanlinesPerFrame; sl++) {
|
||||
this.scanline = sl;
|
||||
if (!novideo) {
|
||||
gfx.drawScanline(pixels, sl);
|
||||
}
|
||||
steps += this.runCPU(cpu, cpuCyclesPerLine);
|
||||
}
|
||||
// visible area is 256x224 (before rotation)
|
||||
if (!novideo) {
|
||||
video.updateFrame(0, 0, 0, 0, gfx.showOffscreenObjects ? 264 : 256, 264);
|
||||
}
|
||||
gfx.advanceFrame();
|
||||
if (watchdog_counter-- <= 0) {
|
||||
console.log("WATCHDOG FIRED, PC ", hex(cpu.getPC())); // TODO: alert on video
|
||||
this.reset();
|
||||
}
|
||||
// NMI interrupt @ 0x66
|
||||
if (interruptEnabled) { cpu.NMI(); }
|
||||
return steps;
|
||||
}
|
||||
|
||||
getRasterScanline() { return this.scanline; }
|
||||
|
||||
loadROM(title, data) {
|
||||
rom.set(padBytes(data, romSize));
|
||||
|
||||
for (var i = 0; i < 32; i++) {
|
||||
var b = rom[palBase + i];
|
||||
palette[i] = 0xff000000;
|
||||
for (var j = 0; j < 8; j++)
|
||||
if (((1 << j) & b))
|
||||
palette[i] += bitcolors[j];
|
||||
}
|
||||
|
||||
this.reset();
|
||||
}
|
||||
|
||||
loadState(state) {
|
||||
cpu.loadState(state.c);
|
||||
ram.mem.set(state.b);
|
||||
vram.mem.set(state.bv);
|
||||
oram.mem.set(state.bo);
|
||||
watchdog_counter = state.wdc;
|
||||
interruptEnabled = state.ie;
|
||||
gfx.starsEnabled = state.se;
|
||||
gfx.frameCounter = state.fc;
|
||||
inputs[0] = state.in0;
|
||||
inputs[1] = state.in1;
|
||||
inputs[2] = state.in2;
|
||||
}
|
||||
saveState() {
|
||||
return {
|
||||
c: this.getCPUState(),
|
||||
b: ram.mem.slice(0),
|
||||
bv: vram.mem.slice(0),
|
||||
bo: oram.mem.slice(0),
|
||||
fc: gfx.frameCounter,
|
||||
ie: interruptEnabled,
|
||||
se: gfx.starsEnabled,
|
||||
wdc: watchdog_counter,
|
||||
in0: inputs[0],
|
||||
in1: inputs[1],
|
||||
in2: inputs[2],
|
||||
};
|
||||
}
|
||||
loadControlsState(state) {
|
||||
inputs[0] = state.in0;
|
||||
inputs[1] = state.in1;
|
||||
inputs[2] = state.in2;
|
||||
}
|
||||
saveControlsState() {
|
||||
return {
|
||||
in0: inputs[0],
|
||||
in1: inputs[1],
|
||||
in2: inputs[2],
|
||||
};
|
||||
}
|
||||
getCPUState() {
|
||||
return cpu.saveState();
|
||||
}
|
||||
|
||||
isRunning() {
|
||||
return timer && timer.isRunning();
|
||||
}
|
||||
pause() {
|
||||
timer.stop();
|
||||
audio.stop();
|
||||
}
|
||||
resume() {
|
||||
timer.start();
|
||||
audio.start();
|
||||
}
|
||||
reset() {
|
||||
cpu.reset();
|
||||
watchdog_counter = INITIAL_WATCHDOG;
|
||||
}
|
||||
newMachine() { return new GalaxianMachine(); }
|
||||
getPresets() { return GALAXIAN_PRESETS; }
|
||||
getDefaultExtension() { return ".c"; };
|
||||
readAddress(a) { return this.machine.readConst(a); }
|
||||
readVRAMAddress(a) { return (a < 0x800) ? this.machine.vram[a] : this.machine.oram[a-0x800]; }
|
||||
// TODO loadBIOS(bios) { this.machine.loadBIOS(a); }
|
||||
getMemoryMap = function() { return { main:[
|
||||
{name:'Video RAM',start:0x5000,size:0x400,type:'ram'},
|
||||
{name:'Sprite RAM',start:0x5800,size:0x100,type:'ram'},
|
||||
{name:'I/O Registers',start:0x6000,size:0x2000,type:'io'},
|
||||
] } };
|
||||
}
|
||||
|
||||
return new GalaxianPlatform();
|
||||
}
|
||||
|
||||
const _GalaxianScramblePlatform = function(mainElement) {
|
||||
return _GalaxianPlatform(mainElement, {
|
||||
romSize: 0x5020,
|
||||
gfxBase: 0x4000,
|
||||
palBase: 0x5000,
|
||||
scramble: true,
|
||||
keyMap: SCRAMBLE_KEYCODE_MAP,
|
||||
missileWidth: 1,
|
||||
missileOffset: 6,
|
||||
});
|
||||
class GalaxianScramblePlatform extends GalaxianPlatform implements Platform {
|
||||
|
||||
newMachine() { return new GalaxianScrambleMachine(); }
|
||||
|
||||
}
|
||||
|
||||
PLATFORMS['galaxian'] = _GalaxianPlatform;
|
||||
PLATFORMS['galaxian-scramble'] = _GalaxianScramblePlatform;
|
||||
PLATFORMS['galaxian'] = GalaxianPlatform;
|
||||
PLATFORMS['galaxian-scramble'] = GalaxianScramblePlatform;
|
||||
|
||||
@ -48,6 +48,7 @@ var _atari8 = require('gen/platform/atari8.js');
|
||||
var _atari7800 = require('gen/platform/atari7800.js');
|
||||
var _coleco = require('gen/platform/coleco.js');
|
||||
var _sms = require('gen/platform/sms.js');
|
||||
var _c64 = require('gen/platform/c64.js');
|
||||
|
||||
//
|
||||
|
||||
@ -301,4 +302,14 @@ describe('Platform Replay', () => {
|
||||
assert.equal(0x1800, platform.saveState().maria.dll);
|
||||
assert.equal(39, platform.readAddress(0x81)); // player y pos
|
||||
});
|
||||
/* TODO
|
||||
it('Should run c64', () => {
|
||||
var platform = testPlatform('c64', 'sprites.dasm.rom', 92, (platform, frameno) => {
|
||||
if (frameno == 62) {
|
||||
keycallback(Keys.VK_DOWN.c, Keys.VK_DOWN.c, 1);
|
||||
}
|
||||
});
|
||||
assert.equal(39, platform.readAddress(0x81)); // player y pos
|
||||
});
|
||||
*/
|
||||
});
|
||||
|
||||
Loading…
Reference in New Issue
Block a user