107 lines
2.7 KiB
TypeScript
107 lines
2.7 KiB
TypeScript
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import { hasAudio, hasSerialIO, hasVideo, Machine } from "../common/baseplatform";
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import { SampledAudioSink, SerialIOInterface } from "../common/devices";
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global.atob = require('atob');
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global.btoa = require('btoa');
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class NullAudio implements SampledAudioSink {
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feedSample(value: number, count: number): void {
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}
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}
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// TODO: merge with platform
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class SerialTestHarness implements SerialIOInterface {
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bufferedRead: boolean = true;
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cyclesPerByte = 1000000 / (57600 / 8); // 138.88888 cycles
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maxOutputBytes = 4096;
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inputBytes: Uint8Array;
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outputBytes: number[];
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inputIndex: number;
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clk: number;
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bufin: string;
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clearToSend(): boolean {
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return this.outputBytes.length < this.maxOutputBytes;
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}
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sendByte(b: number) {
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if (this.clearToSend()) {
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this.outputBytes.push(b);
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}
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}
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byteAvailable(): boolean {
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return this.readIndex() > this.inputIndex;
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}
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recvByte(): number {
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var index = this.readIndex();
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this.inputIndex = index;
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var b = this.inputBytes[index] | 0;
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return b;
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}
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readIndex(): number {
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return this.bufferedRead ? (this.inputIndex + 1) : Math.floor(this.clk / this.cyclesPerByte);
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}
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reset() {
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this.inputIndex = -1;
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this.clk = 0;
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this.outputBytes = [];
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this.bufin = '';
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}
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advance(clocks: number) {
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this.clk += clocks;
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}
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}
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///
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export class MachineRunner {
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machine: Machine;
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pixels: Uint32Array;
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serial: SerialTestHarness;
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constructor(machine: Machine) {
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this.machine = machine;
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}
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setup() {
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if (hasVideo(this.machine)) {
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var vid = this.machine.getVideoParams();
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this.pixels = new Uint32Array(vid.width * vid.height);
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this.machine.connectVideo(this.pixels);
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}
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if (hasAudio(this.machine)) {
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this.machine.connectAudio(new NullAudio());
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}
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if (hasSerialIO(this.machine)) {
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this.serial = new SerialTestHarness();
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this.machine.connectSerialIO(this.serial);
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}
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this.machine.reset();
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}
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run() {
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this.machine.advanceFrame(null);
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}
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}
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async function loadMachine(modname: string, clsname: string): Promise<Machine> {
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var mod = await import('../machine/' + modname);
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var cls = mod[clsname];
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var machine = new cls();
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return machine;
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}
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async function runMachine() {
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var machine = await loadMachine(process.argv[2], process.argv[3]);
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var runner = new MachineRunner(machine);
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runner.setup();
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runner.run();
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console.log(runner.machine.saveState());
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}
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if (require.main === module) {
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runMachine();
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}
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