mirror of https://github.com/JorjBauer/aiie.git
45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
#ifdef TEENSYDUINO
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#include <Arduino.h>
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#else
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#endif
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#include "LRingBuffer.h"
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#define NIBTRACKSIZE 0x1A00
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// Minimum viable nibblized sector size. With GAP bytes, could be much longer.
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#define MINNIBSECTORSIZE (343 + 13 + 3)
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#define nib1(a) (((a & 0xAA) >> 1) | 0xAA)
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#define nib2(b) (((b & 0x55) ) | 0xAA)
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#define denib(a, b) ((((a) & ~0xAA) << 1) | ((b) & ~0xAA))
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#define GAP 0xFF
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enum {
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dosDisk = 0,
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prodosDisk = 1,
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nibDisk = 2
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};
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enum nibErr {
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errorNone = 0,
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errorShortTrack = 1,
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errorMissingSectors = 2
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};
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void nibblizeTrack(LRingBuffer *trackBuffer, uint8_t *rawTrackBuffer,
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uint8_t diskType, int8_t track);
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nibErr denibblizeTrack(LRingBuffer *trackBuffer, uint8_t *rawTrackBuffer,
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uint8_t diskType, int8_t track);
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bool decodeData(LRingBuffer *trackBuffer, uint16_t startAt, uint8_t *output);
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void encodeData(LRingBuffer *trackBuffer, uint8_t *data);
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