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715ea6ffaa
Like the DOS 3.3 sector order issues in #49, this change fixes the order of the physical sectors on the ProDOS disk when nibblized. This change also adds tests similar to the DOS 3.3 tests to verify the sector order. Because the DOS 3.3 and ProDOS tests are so similar, the utility methods have been refactored into their own file.
52 lines
1.8 KiB
JavaScript
52 lines
1.8 KiB
JavaScript
/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation. No representations are made about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*/
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import { explodeSector16, PO } from './format_utils';
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import { bytify } from '../util';
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/**
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* Returns a `Disk` object from ProDOS-ordered image data.
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* @param {*} options the disk image and options
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* @returns {import('./format_utils').Disk}
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*/
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export default function ProDOS(options) {
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var { data, name, rawData, volume, readOnly } = options;
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var disk = {
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format: 'nib',
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name,
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volume: volume || 254,
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tracks: [],
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readOnly: readOnly || false,
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trackMap: null,
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rawTracks: null
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};
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for (var physical_track = 0; physical_track < 35; physical_track++) {
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var track = [];
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for (var physical_sector = 0; physical_sector < 16; physical_sector++) {
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const prodos_sector = PO[physical_sector];
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var sector;
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if (rawData) {
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var off = (16 * physical_track + prodos_sector) * 256;
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sector = new Uint8Array(rawData.slice(off, off + 256));
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} else {
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sector = data[physical_track][prodos_sector];
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}
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track = track.concat(
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explodeSector16(volume, physical_track, physical_sector, sector)
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);
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}
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disk.tracks[physical_track] = bytify(track);
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}
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return disk;
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}
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