apple2js/js/formats/do.js

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/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
import { explodeSector16, _DO } from './format_utils';
import { bytify } from '../util';
export default function DOS(options) {
var { data, name, rawData, volume, readOnly } = options;
var disk = {
format: 'dsk',
name,
volume,
readOnly,
tracks: [],
trackMap: null,
rawTracks: null
};
for (var t = 0; t < 35; t++) {
var track = [];
for (var s = 0; s < 16; s++) {
var _s = 15 - s;
var sector;
if (rawData) {
var off = (16 * t + _s) * 256;
sector = new Uint8Array(rawData.slice(off, off + 256));
} else {
sector = data[t][_s];
}
track = track.concat(
explodeSector16(volume, t, _DO[_s], sector)
);
}
disk.tracks[t] = bytify(track);
}
return disk;
}