// license:BSD-3-Clause // copyright-holders: F. Ulivi /********************************************************************* img_dsk.h "IMG" disk format for SSDD & SSSD Intel MDS-II 8" disks *********************************************************************/ #ifndef MAME_FORMATS_IMG_DSK_H #define MAME_FORMATS_IMG_DSK_H #pragma once #include "flopimg.h" #include class img_format : public floppy_image_format_t { public: // Geometry constants static constexpr unsigned TRACKS = 77; static constexpr unsigned HEADS = 1; static constexpr unsigned SECTORS = 52; static constexpr unsigned SECTORS_FM = 26; static constexpr unsigned SECTOR_SIZE = 128; img_format(); virtual int identify(util::random_read &io, uint32_t form_factor, const std::vector &variants) const override; virtual bool load(util::random_read &io, uint32_t form_factor, const std::vector &variants, floppy_image &image) const override; virtual bool save(util::random_read_write &io, const std::vector &variants, const floppy_image &image) const override; virtual const char *name() const noexcept override; virtual const char *description() const noexcept override; virtual const char *extensions() const noexcept override; virtual bool supports_save() const noexcept override; private: static std::vector interleaved_sectors(unsigned sects, unsigned il_factor); static void write_mmfm_bit(std::vector &buffer , bool data_bit , bool clock_bit , uint16_t &crc); static void write_mmfm_byte(std::vector &buffer , uint8_t data , uint16_t &crc , uint8_t clock = 0); static void write_sync(std::vector &buffer); static void write_crc(std::vector &buffer , uint16_t crc); static void write_gap(std::vector &buffer , unsigned size_00 , unsigned size_ff); static void write_sector(std::vector &buffer , uint8_t track_no , uint8_t sect_no , const uint8_t *sect_data); static void fill_with_gap4(std::vector &buffer); static std::vector get_next_id_n_block(const std::vector &bitstream , int& pos , int& start_pos); static bool get_next_sector(const std::vector &bitstream , int& pos , unsigned& track , unsigned& sector , uint8_t *sector_data); }; extern const img_format FLOPPY_IMG_FORMAT; #endif // MAME_FORMATS_IMG_DSK_H