426 lines
10 KiB
JavaScript
426 lines
10 KiB
JavaScript
/**************************************************************************
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* SAE - Scripted Amiga Emulator
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*
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* https://github.com/naTmeg/ScriptedAmigaEmulator
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*
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* ©2012 Rupert Hausberger
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* Commercial use is prohibited.
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*
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**************************************************************************/
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function set_special(x) { AMIGA.spcflags |= x; }
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function clr_special(x) { AMIGA.spcflags &= ~x; }
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function Amiga() {
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this.info = {
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version: SAEV_Version+'.'+SAEV_Revision+'.'+SAEV_Revision_Sub,
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browser_name: BrowserDetect.browser,
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browser_version: BrowserDetect.version,
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os: BrowserDetect.OS,
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video:0,
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audio:0
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};
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this.config = new Config();
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this.mem = new Memory();
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this.expansion = new Expansion();
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this.input = new Input();
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this.serial = new Serial();
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this.events = new Events();
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this.disk = new Disk();
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this.cia = new CIA();
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this.rtc = new RTC();
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this.custom = new Custom();
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this.blitter = new Blitter();
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this.copper = new Copper();
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this.playfield = new Playfield();
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this.video = new Vide0();
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this.audio = new Audi0();
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this.cpu = new CPU();
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this.state = ST_STOP;
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this.delay = 0;
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this.spcflags = 0;
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//this.loading = 0;
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this.intena = 0;
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this.intreq = 0;
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this.dmacon = 0;
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this.adkcon = 0;
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this.info.video = this.video.available;
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this.info.audio = this.audio.available;
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/*---------------------------------*/
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this.setup = function () {
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this.mem.setup();
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this.expansion.setup();
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this.events.setup();
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this.playfield.setup();
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this.video.setup();
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this.cia.setup();
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this.rtc.setup();
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this.input.setup();
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this.disk.setup();
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this.audio.setup();
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this.custom.setup();
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this.cpu.setup();
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};
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this.cleanup = function () {
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this.audio.cleanup();
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this.video.cleanup();
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this.playfield.cleanup();
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this.input.cleanup();
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};
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this.reset = function () {
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BUG.info('Amiga.reset()');
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this.delay = 0;
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this.spcflags = 0;
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//this.loading = 0;
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this.intena = 0;
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this.intreq = 0;
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this.dmacon = 0;
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this.adkcon = 0;
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this.expansion.reset();
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this.events.reset();
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this.playfield.reset();
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this.cia.reset();
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this.disk.reset();
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this.input.reset();
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this.serial.reset();
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this.blitter.reset();
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this.copper.reset();
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this.audio.reset();
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this.custom.reset();
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this.cpu.reset(this.mem.rom.lower);
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};
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this.dump = function () {
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this.cpu.dump();
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//this.cia.dump();
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};
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/*---------------------------------*/
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/*this.waitForStart = function() {
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if (this.loading)
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setTimeout('AMIGA.waitForStart()', 10);
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else {
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this.reset();
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this.state = ST_CYCLE;
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setTimeout('AMIGA.cycle()', 0);
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}
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}
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this.start = function() {
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this.setup();
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this.waitForStart();
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}*/
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this.start = function () {
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if (this.state == ST_STOP) {
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this.setup();
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this.reset();
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this.state = ST_CYCLE;
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setTimeout('AMIGA.cycle()', 0);
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}
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};
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this.stop = function () {
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if (this.state != ST_STOP) {
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this.state = ST_STOP;
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this.cleanup();
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}
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};
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this.pause = function (state) {
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if (this.state != ST_STOP) {
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this.state = state ? ST_PAUSE : ST_CYCLE;
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this.audio.pauseResume(state);
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}
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};
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/*this.insert = function(unit, name, data) {
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//this.disk.insert_data(unit, data);
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this.disk.insert(unit, name, data);
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this.config.floppy.drive[unit].name = name;
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}
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this.eject = function(unit) {
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if (this.config.floppy.drive[unit].name) {
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this.disk.eject(unit);
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//this.disk.eject_data(unit);
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this.config.floppy.drive[unit].name = null;
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BUG.info('amiga.eject() DF%d ejected', unit);
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} else
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BUG.info('amiga.eject() DF%d in empty', unit);
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}
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*/
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this.insert = function (unit) {
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if (this.state != ST_STOP)
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this.disk.insert(unit);
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};
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this.eject = function (unit) {
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if (this.state != ST_STOP)
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this.disk.eject(unit);
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};
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/*---------------------------------*/
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/* mainloop */
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this.cycle = function () {
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try {
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this.cpu.cycle();
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} catch (e) {
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if (e instanceof VSync) {
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//console.log(e.error, e.message);
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this.state = ST_IDLE;
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} else if (e instanceof FatalError) {
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this.state = ST_STOP;
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this.stop();
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this.config.hooks.error(e.error, e.message);
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} else /* normal exception */ {
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this.state = ST_STOP;
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this.stop();
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console.log(e);
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}
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}
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if (this.state == ST_IDLE) {
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this.state = ST_CYCLE;
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setTimeout('AMIGA.cycle()', this.delay);
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}
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else if (this.state == ST_PAUSE)
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AMIGA.cyclePause();
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else
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AMIGA.cycleExit();
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};
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this.cyclePause = function () {
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if (this.state == ST_CYCLE)
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setTimeout('AMIGA.cycle()', 0);
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else if (this.state == ST_PAUSE)
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setTimeout('AMIGA.cyclePause()', 500);
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else
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AMIGA.cycleExit();
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};
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this.cycleExit = function () {
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this.dump();
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//this.cia.dump();
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};
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/*---------------------------------*/
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this.dmaen = function (dmamask) {
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return ((this.dmacon & DMAF_DMAEN) != 0 && (this.dmacon & dmamask) != 0);
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};
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this.DMACONR = function (hpos) {
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this.playfield.decide_line(hpos);
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this.playfield.decide_fetch(hpos);
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this.dmacon &= ~(0x4000 | 0x2000);
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var iz = this.blitter.getIntZero();
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this.dmacon |= ((iz[0] ? 0 : 0x4000) | (iz[1] ? 0x2000 : 0));
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return this.dmacon;
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};
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this.DMACON = function (v, hpos) {
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var oldcon = this.dmacon;
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this.playfield.decide_line(hpos);
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this.playfield.decide_fetch(hpos);
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if (v & INTF_SETCLR)
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this.dmacon |= v & ~INTF_SETCLR;
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else
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this.dmacon &= ~v;
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this.dmacon &= 0x1fff;
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var changed = this.dmacon ^ oldcon;
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var oldcop = (oldcon & DMAF_COPEN) != 0 && (oldcon & DMAF_DMAEN) != 0;
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var newcop = (this.dmacon & DMAF_COPEN) != 0 && (this.dmacon & DMAF_DMAEN) != 0;
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if (oldcop != newcop) {
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if (newcop && !oldcop) {
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this.copper.compute_spcflag_copper(this.events.hpos());
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} else if (!newcop) {
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this.copper.enabled_thisline = false;
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clr_special(SPCFLAG_COPPER);
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}
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}
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if ((this.dmacon & DMAF_BLTPRI) > (oldcon & DMAF_BLTPRI) && this.blitter.getState() != BLT_done)
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set_special(SPCFLAG_BLTNASTY);
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if (this.dmaen(DMAF_BLTEN) && this.blitter.getState() == BLT_init)
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this.blitter.setState(BLT_work);
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if ((this.dmacon & (DMAF_BLTPRI | DMAF_BLTEN | DMAF_DMAEN)) != (DMAF_BLTPRI | DMAF_BLTEN | DMAF_DMAEN))
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clr_special(SPCFLAG_BLTNASTY);
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if (changed & (DMAF_DMAEN | 0x0f))
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this.audio.state_machine();
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if (changed & (DMAF_DMAEN | DMAF_BPLEN)) {
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this.playfield.update_ddf_change();
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if (this.dmaen(DMAF_BPLEN))
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this.playfield.maybe_start_bpl_dma(hpos);
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}
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this.events.schedule();
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};
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/*---------------------------------*/
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this.ADKCONR = function () {
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return this.adkcon;
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};
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this.ADKCON = function (v, hpos) {
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if (this.config.audio.enabled)
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this.audio.update();
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this.disk.update(hpos);
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this.disk.update_adkcon(v);
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if (v & INTF_SETCLR)
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this.adkcon |= v & ~INTF_SETCLR;
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else
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this.adkcon &= ~v;
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this.audio.update_adkmasks();
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};
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/*---------------------------------*/
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this.INTENAR = function () {
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return this.intena;
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};
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this.INTENA = function (v) {
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if (v & INTF_SETCLR)
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this.intena |= v & ~INTF_SETCLR;
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else
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this.intena &= ~v;
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if (v & INTF_SETCLR)
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this.doint();
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};
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/*---------------------------------*/
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this.INTREQR = function () {
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return this.intreq;
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};
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this.INTREQ_0 = function (v) {
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var old = this.intreq;
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if (v & INTF_SETCLR)
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this.intreq |= v & ~INTF_SETCLR;
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else
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this.intreq &= ~v;
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if ((v & INTF_SETCLR) && this.intreq != old)
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this.doint();
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};
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this.INTREQ = function (v) {
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this.INTREQ_0(v);
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this.cia.rethink();
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};
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/*---------------------------------*/
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this.intlev = function () {
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var imask = this.intreq & this.intena;
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if (imask && (this.intena & INTF_INTEN)) {
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if (imask & 0x2000) return 6;
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if (imask & 0x1800) return 5;
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if (imask & 0x0780) return 4;
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if (imask & 0x0070) return 3;
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if (imask & 0x0008) return 2;
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if (imask & 0x0007) return 1;
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}
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return -1;
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};
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this.doint = function() {
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if (AMIGA.config.cpu.compatible)
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set_special(SPCFLAG_INT);
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else
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set_special(SPCFLAG_DOINT);
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}
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}
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/*-----------------------------------------------------------------------*/
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/* This API will change in the future. */
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var BUG = null;
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var AMIGA = null;
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function SAE(x) {
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try {
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switch (x.cmd) {
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case 'init':
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BUG = new Debug();
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BUG.info('API.init() SEA %d.%d.%d', SAEV_Version, SAEV_Revision, SAEV_Revision_Sub);
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AMIGA = new Amiga();
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//return AMIGA.config;
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break;
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case 'reset':
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BUG.info('API.reset()');
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AMIGA.reset();
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break;
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case 'start':
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BUG.info('API.start()');
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AMIGA.start();
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break;
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case 'stop':
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BUG.info('API.stop()');
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AMIGA.stop();
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break;
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case 'pause':
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BUG.info('API.pause() %d', x.state);
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AMIGA.pause(x.state);
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break;
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/*case 'insert':
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BUG.info('API.insert() DF%d, name "%s", length %d', x.unit, x.name, x.data.length);
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AMIGA.insert(x.unit, x.name, x.data);
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break;*/
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case 'insert':
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BUG.info('API.insert() DF%d', x.unit);
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AMIGA.insert(x.unit);
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break;
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case 'eject':
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BUG.info('API.eject() DF%d', x.unit);
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AMIGA.eject(x.unit);
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break;
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case 'getInfo':
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BUG.info('API.getInfo()');
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return AMIGA.info;
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case 'getConfig':
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BUG.info('API.getConfig()');
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return AMIGA.config;
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/*case 'setConfig':
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BUG.info('API.setConfig() size '+x.data.ext.size);
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AMIGA.config = x.data;
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break;*/
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}
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} catch (e) {
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if (e instanceof FatalError) {
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AMIGA.stop();
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//return { error:e.error, message:e.message };
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AMIGA.config.hooks.error(e.error, e.message);
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} else
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console.log(e);
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}
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//return SAEE_None;
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//return { error:SAEE_None, message:'' };
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return 0;
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}
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