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/*********************************************************************
formats/d64_dsk.h
Commodore 2040/8050/1541 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
int dos;
int sector_count;
int track_count;
int head_count;
int gap_1;
int gap_2;
};
d64_format();
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;
protected:
enum
{
DOS_1,
DOS_2,
DOS_25
};
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 */
};
static const int SECTOR_SIZE = 256;
static const int DOS1_DISK_ID_OFFSET = 101144;
static const int DOS25_DISK_ID_OFFSET = 282136;
floppy_image_format_t::desc_e* get_sector_desc(const format &f, int ¤t_size, int track, int sector_count, UINT8 id1, UINT8 id2, int gap_2);
int find_size(io_generic *io, UINT32 form_factor);
int get_physical_track(const format &f, int track);
UINT32 get_cell_size(const format &f, int track);
int get_sectors_per_track(const format &f, int track);
void get_disk_id(const format &f, io_generic *io, UINT8 &id1, UINT8 &id2);
void build_sector_description(const format &f, UINT8 *sectdata, desc_s *sectors, int sector_count, UINT8 *errordata) const;
static const format formats[];
static const UINT32 dos1_cell_size[];
static const UINT32 dos25_cell_size[];
static const int dos1_speed_zone[];
static const int dos25_speed_zone[];
static const int dos1_sectors_per_track[];
static const int dos2_sectors_per_track[];
static const int dos25_sectors_per_track[];
};
extern const floppy_format_type FLOPPY_D64_FORMAT;
FLOPPY_IDENTIFY( d64_dsk_identify );
FLOPPY_IDENTIFY( d67_dsk_identify );
FLOPPY_IDENTIFY( d71_dsk_identify );
FLOPPY_IDENTIFY( d80_dsk_identify );
FLOPPY_IDENTIFY( d82_dsk_identify );
FLOPPY_CONSTRUCT( d64_dsk_construct );
#endif
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