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https://github.com/holub/mame
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52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
/*********************************************************************
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formats/wd177x_sk.h
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helper for simple wd177x-formatted disk images
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*********************************************************************/
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#ifndef WD177X_DSK_H
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#define WD177X_DSK_H
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#include "flopimg.h"
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class wd177x_format : public floppy_image_format_t
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{
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public:
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struct format {
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UINT32 form_factor; // See floppy_image for possible values
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UINT32 variant; // See floppy_image for possible values
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int cell_size; // See floppy_image_format_t for details
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int sector_count;
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int track_count;
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int head_count;
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int sector_base_size;
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int per_sector_size[40]; // if sector_base_size is 0
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int sector_base_id; // 0 or 1 usually, -1 if there's interleave
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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]
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int gap_1; // Usually around 80 - number of 4e between index and first IDAM sync
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int gap_2; // 22 for <=1.44Mb, 41 for 2.88Mb - number of 4e between sector header and data sync
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int gap_3; // Usually 84 - number of 4e between sector crc and next IDAM
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};
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// End the array with {}
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wd177x_format(const format *formats);
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virtual int identify(io_generic *io, UINT32 form_factor);
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virtual bool load(io_generic *io, UINT32 form_factor, floppy_image *image);
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virtual bool save(io_generic *io, floppy_image *image);
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virtual bool supports_save() const;
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private:
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const format *formats;
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int find_size(io_generic *io, UINT32 form_factor);
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int compute_track_size(const format &f) const;
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void build_sector_description(const format &d, UINT8 *sectdata, desc_s *sectors) const;
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void check_compatibility(floppy_image *image, int *candidates, int &candidates_count);
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void extract_sectors(floppy_image *image, const format &f, desc_s *sdesc, int track, int head);
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};
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#endif /* WD177X_DSK_H */
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