62 lines
1.2 KiB
TypeScript
62 lines
1.2 KiB
TypeScript
import { MemoryPages, byte, word } from 'js/types';
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import { assertByte } from './asserts';
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export type Log = [address: word, value: byte, types: 'read'|'write'];
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export class TestMemory implements MemoryPages {
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private data: Buffer;
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private logging: boolean = false;
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private log: Log[] = [];
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constructor(private size: number) {
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this.data = Buffer.alloc(size << 8);
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}
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start() {
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return 0;
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}
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end() {
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return this.size - 1;
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}
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read(page: byte, off: byte) {
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assertByte(page);
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assertByte(off);
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const val = this.data[(page << 8) | off];
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if (this.logging) {
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this.log.push([page << 8 | off, val, 'read']);
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}
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return val;
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}
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write(page: byte, off: byte, val: byte) {
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assertByte(page);
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assertByte(off);
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assertByte(val);
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if (this.logging) {
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this.log.push([page << 8 | off, val, 'write']);
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}
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this.data[(page << 8) | off] = val;
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}
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reset() {
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this.log = [];
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}
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logStart() {
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this.log = [];
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this.logging = true;
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}
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logStop() {
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this.logging = false;
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}
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getLog() {
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return this.log;
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}
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}
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