36 lines
995 B
TypeScript
36 lines
995 B
TypeScript
import { NibbleDisk, DiskOptions, ENCODING_NIBBLE } from './types';
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import { memory } from '../types';
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/**
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* Returns a `Disk` object from raw nibble image data.
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* @param options the disk image and options
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* @returns A nibblized disk
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*/
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export default function createDiskFromNibble(options: DiskOptions): NibbleDisk {
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const { data, name, side, rawData, volume, readOnly } = options;
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const disk: NibbleDisk = {
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format: 'nib',
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encoding: ENCODING_NIBBLE,
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name,
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side,
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volume: volume || 254,
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readOnly: readOnly || false,
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tracks: []
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};
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for (let t = 0; t < 35; t++) {
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let track: memory;
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if (rawData) {
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const off = t * 0x1a00;
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track = new Uint8Array(rawData.slice(off, off + 0x1a00));
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} else if (data) {
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track = data[t][0];
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} else {
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throw new Error('Requires data or rawData');
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}
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disk.tracks[t] = track;
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}
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return disk;
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}
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