mirror of https://github.com/trudnai/Steve2.git
127 lines
2.5 KiB
C
127 lines
2.5 KiB
C
//
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// woz.h
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// A2Mac
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//
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// Created by Tamas Rudnai on 2/15/20.
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// Copyright © 2020 GameAlloy. All rights reserved.
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//
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#ifndef woz_h
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#define woz_h
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#include <stdio.h>
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#include "common.h"
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#define DISKII_MAXTRACKS 80
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#define DISKII_PHASES 4
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#define WOZ1_MAGIC 0x315A4F57
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#define WOZ2_MAGIC 0x325A4F57
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#define WOZ_INFO_CHUNK_ID 0x4F464E49
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#define WOZ_TMAP_CHUNK_ID 0x50414D54
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#define WOZ_TRKS_CHUNK_ID 0x534B5254
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#define WOZ_META_CHUNK_ID 0x4154454D
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#pragma pack(push)
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#pragma pack(1)
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typedef struct woz_header_s {
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uint32_t magic;
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uint8_t no7;
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char lineend [3];
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uint32_t crc;
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} woz_header_t;
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typedef struct woz_chunk_header_s {
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uint32_t magic;
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uint32_t size;
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} woz_chunk_header_t;
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// chunk data only
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typedef struct woz_info_s {
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uint8_t version;
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uint8_t disk_type; // 1 = 5.25, 2 = 3.5
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uint8_t is_write_protected;
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uint8_t sync; // 1 = Cross track sync
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uint8_t cleaned; // 1 = MC3470 fake bits removed
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char creator [32]; // Name of software created this file (UTF-8, 0x20 padded, NOT zero terminated)
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} woz_info_t;
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// chunk data only
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typedef struct woz_tmap_s {
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uint8_t phase [DISKII_MAXTRACKS * DISKII_PHASES];
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} woz_tmap_t;
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#define WOZ_TRACK_BYTE_COUNT 6646
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// chunk data only
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typedef struct woz_track_s {
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uint8_t data [WOZ_TRACK_BYTE_COUNT];
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uint16_t bytes_used;
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uint16_t bit_count;
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uint16_t splice_point;
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uint8_t splice_nibble;
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uint8_t splice_bit_count;
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uint16_t reserved;
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} woz_track_t;
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// chunk data only
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typedef woz_track_t woz_trks_t[DISKII_MAXTRACKS];
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#pragma pack(pop)
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#define __NO__WOZ_REAL_SPIN2
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#ifdef WOZ_REAL_SPIN
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typedef union {
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struct {
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uint8_t next;
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uint8_t data;
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uint8_t prev;
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uint8_t shift;
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};
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struct {
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uint32_t lower : 31;
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uint32_t valid : 1;
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};
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uint32_t shift32;
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} WOZread_t;
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#else // WOZ_REAL_SPIN
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typedef union {
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struct {
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uint8_t data;
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uint8_t shift;
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};
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struct {
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uint16_t lower15 : 15;
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uint16_t valid : 1;
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};
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uint16_t shift16;
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} WOZread_t;
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#endif // WOZ_REAL_SPIN
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extern WOZread_t WOZread;
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extern uint8_t WOZlatch;
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//extern woz_header_t woz_header;
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//extern woz_chunk_header_t woz_chunk_header;
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//extern woz_tmap_t woz_tmap;
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//extern woz_trks_t woz_trks;
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extern uint8_t woz_read(void);
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extern void woz_loadFile( const char * filename );
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#endif /* woz_h */
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