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/*********************************************************************
formats/upd765_dsk.h
helper for simple upd765-formatted disk images
*********************************************************************/
#ifndef UPD765_DSK_H
#define UPD765_DSK_H
#include "flopimg.h"
class upd765_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
UINT32 encoding; // See floppy_image for possible values
int cell_size; // See floppy_image_format_t for details
int sector_count;
int track_count;
int head_count;
int sector_base_size;
int per_sector_size[40]; // if sector_base_size is 0
int sector_base_id; // 0 or 1 usually, -1 if there's interleave
int per_sector_id[40]; // if sector_base_id is -1. If both per are used, then sector per_sector_id[i] has size per_sector_size[i]
int gap_4a; // Usually 80 - number of 4e between index and IAM sync
int gap_1; // Usually 50 - number of 4e between IAM and first IDAM sync
int gap_2; // 22 for <=1.44Mb, 41 for 2.88Mb - number of 4e between sector header and data sync
int gap_3; // Usually 84 - number of 4e between sector crc and next IDAM
};
// End the array with {}
upd765_format(const format *formats);
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:
floppy_image_format_t::desc_e* get_desc_fm(const format &f, int ¤t_size, int &end_gap_index);
floppy_image_format_t::desc_e* get_desc_mfm(const format &f, int ¤t_size, int &end_gap_index);
int find_size(io_generic *io, UINT32 form_factor);
int compute_track_size(const format &f) const;
virtual void build_sector_description(const format &d, UINT8 *sectdata, desc_s *sectors, int track, int head) const;
void check_compatibility(floppy_image *image, std::vector<int> &candidates);
void extract_sectors(floppy_image *image, const format &f, desc_s *sdesc, int track, int head);
private:
const format *formats;
};
#endif /* UPD765_DSK_H */
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