8bitworkshop/gen/platform/sound_konami.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const baseplatform_1 = require("../common/baseplatform");
const emu_1 = require("../common/emu");
var KONAMISOUND_PRESETS = [];
var KonamiSoundPlatform = function (mainElement) {
    this.__proto__ = new baseplatform_1.BaseZ80Platform();
    var cpu, ram, rom, membus, iobus;
    var audio, master;
    var video, timer;
    var interruptPending = 0;
    var psgRegister = 0;
    var psg;
    var cpuFrequency = 14318000 / 8;
    var ioTimerFrequency = 1789750 / 1280;
    var cpuCyclesPerFrame = cpuFrequency / 60;
    var cpuCyclesPerTimer = cpuFrequency / ioTimerFrequency;
    this.getPresets = function () {
        return KONAMISOUND_PRESETS;
    };
    this.start = function () {
        ram = new emu_1.RAM(0x400);
        membus = {
            read: (0, emu_1.newAddressDecoder)([
                [0x0000, 0x3fff, 0x3fff, function (a) { return rom ? rom[a] : null; }],
                [0x4000, 0x5fff, 0x3ff, function (a) { return ram.mem[a]; }]
            ]),
            write: (0, emu_1.newAddressDecoder)([
                [0x4000, 0x5fff, 0x3ff, function (a, v) { ram.mem[a] = v; }],
            ]),
            isContended: function () { return false; },
        };
        iobus = {
            read: function (addr) {
                if (addr & 0x40) {
                    if (psgRegister == 0xf) { // timer
                        var bit = (cpu.getTstates() / cpuCyclesPerTimer) & 1;
                        return bit ? 0xff : 0x00; // 0x00, 0x10, 0x20, 0x30, 0x40, 0x90, 0xa0, 0xb0, 0xa0, 0xd0
                    }
                    return psg.readRegister(psgRegister) & 0xff;
                }
                return 0;
            },
            write: function (addr, val) {
                if (addr & 0x80) {
                    psgRegister = val & 0xf;
                    //console.log('PSG reg', psgRegister);
                }
                if (addr & 0x40) {
                    psg.writeRegisterAY(psgRegister, val & 0xff);
                    //console.log('PSG write', psgRegister, val);
                }
            }
        };
        this.readAddress = membus.read;
        cpu = this.newCPU(membus, iobus);
        psg = new PsgDeviceChannel();
        master = new MasterChannel();
        psg.setMode(PsgDeviceChannel.MODE_SIGNED);
        psg.setDevice(PsgDeviceChannel.DEVICE_AY_3_8910);
        master.addChannel(psg);
        audio = new AudioLooper(512);
        audio.setChannel(master);
        //audio = new SampleAudio(psg.sampleRate);
        video = new emu_1.RasterVideo(mainElement, 256, 256);
        video.create();
        video.setKeyboardEvents(function (key, code, flags) {
            var intr = (key - 49);
            if (intr >= 0 && (flags & 1)) {
                psg.writeRegister(14, intr);
                psg.writeRegister(15, 0x80);
                cpu.setIFF1(1);
                cpu.requestInterrupt(0x38);
                /*
                console.log(cpu.saveState());
                console.log(hex(intr * 8), cpu.getIFF1(), cpu.getIM());
                cpu.runFrame(cpu.getTstates() + 1);
                console.log(cpu.saveState());
                */
            }
        });
        timer = new emu_1.AnimationTimer(60, () => {
            if (!this.isRunning())
                return;
            var debugCond = this.getDebugCallback();
            var targetTstates = cpu.getTstates() + cpuCyclesPerFrame;
            if (debugCond) {
                while (cpu.getTstates() < targetTstates) {
                    if (debugCond && debugCond()) {
                        debugCond = null;
                    }
                    cpu.runFrame(cpu.getTstates() + 1);
                }
            }
            else {
                cpu.runFrame(targetTstates);
            }
        });
    };
    this.loadROM = function (title, data) {
        rom = (0, emu_1.padBytes)(data, 0x4000);
        cpu.reset();
    };
    this.loadState = function (state) {
        cpu.loadState(state.c);
        ram.mem.set(state.b);
    };
    this.saveState = function () {
        return {
            c: this.getCPUState(),
            b: ram.mem.slice(0),
        };
    };
    this.getCPUState = function () {
        return cpu.saveState();
    };
    this.isRunning = function () {
        return timer && timer.isRunning();
    };
    this.pause = function () {
        timer.stop();
        //audio.stop();
    };
    this.resume = function () {
        timer.start();
        audio.activate();
    };
    this.reset = function () {
        cpu.reset();
        if (!this.getDebugCallback())
            cpu.setTstates(0); // TODO?
    };
};
emu_1.PLATFORMS['sound_konami'] = KonamiSoundPlatform;
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