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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/*********************************************************************
formats/d64_dsk.h
Commodore 4040/1541/1551 sector disk image format
*********************************************************************/
#ifndef D64_DSK_H_
#define D64_DSK_H_
#include "flopimg.h"
class d64_format : public floppy_image_format_t {
public:
struct format {
UINT32 form_factor; // See floppy_image for possible values
UINT32 variant; // See floppy_image for possible values
UINT16 sector_count;
UINT8 track_count;
UINT8 head_count;
UINT16 sector_base_size;
UINT8 gap_1;
UINT8 gap_2;
};
d64_format();
d64_format(const format *formats);
virtual const char *name() const;
virtual const char *description() const;
virtual const char *extensions() const;
virtual int identify(io_generic *io, UINT32 form_factor);
virtual bool load(io_generic *io, UINT32 form_factor, floppy_image *image);
virtual bool save(io_generic *io, floppy_image *image);
virtual bool supports_save() const { return true; }
protected:
enum
{
ERROR_00 = 1,
ERROR_20, /* header block not found */
ERROR_21, /* no sync character */
ERROR_22, /* data block not present */
ERROR_23, /* checksum error in data block */
ERROR_24, /* write verify (on format) UNIMPLEMENTED */
ERROR_25, /* write verify error UNIMPLEMENTED */
ERROR_26, /* write protect on UNIMPLEMENTED */
ERROR_27, /* checksum error in header block */
ERROR_28, /* write error UNIMPLEMENTED */
ERROR_29, /* disk ID mismatch */
ERROR_74, /* disk not ready (no device 1) UNIMPLEMENTED */
};
const format *formats;
int find_size(io_generic *io, UINT32 form_factor);
virtual int get_physical_track(const format &f, int head, int track);
virtual UINT32 get_cell_size(const format &f, int track);
virtual int get_sectors_per_track(const format &f, int track);
virtual int get_disk_id_offset(const format &f);
void get_disk_id(const format &f, io_generic *io, UINT8 &id1, UINT8 &id2);
virtual int get_image_offset(const format &f, int head, int track);
int compute_track_size(const format &f, int track);
virtual int get_gap2(const format &f, int head, int track) { return f.gap_2; }
virtual floppy_image_format_t::desc_e* get_sector_desc(const format &f, int ¤t_size, int sector_count, UINT8 id1, UINT8 id2, int gap_2);
void build_sector_description(const format &f, UINT8 *sectdata, UINT32 sect_offs, UINT32 error_offs, desc_s *sectors, int sector_count) const;
virtual void fix_end_gap(floppy_image_format_t::desc_e* desc, int remaining_size);
void extract_sectors(floppy_image *image, const format &f, desc_s *sdesc, int track, int head, int sector_count);
static const format file_formats[];
static const UINT32 cell_size[];
static const int sectors_per_track[];
static const int speed_zone[];
};
extern const floppy_format_type FLOPPY_D64_FORMAT;
#endif
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