// 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