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Diffstat (limited to 'src/lib/formats/img_dsk.h')
-rw-r--r-- | src/lib/formats/img_dsk.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/lib/formats/img_dsk.h b/src/lib/formats/img_dsk.h new file mode 100644 index 00000000000..567a18b273d --- /dev/null +++ b/src/lib/formats/img_dsk.h @@ -0,0 +1,54 @@ +// 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 <vector> + +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<uint32_t> &variants) const override; + virtual bool load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image &image) const override; + virtual bool save(util::random_read_write &io, const std::vector<uint32_t> &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<uint8_t> interleaved_sectors(unsigned sects, unsigned il_factor); + static void write_mmfm_bit(std::vector<uint32_t> &buffer , bool data_bit , bool clock_bit , uint16_t &crc); + static void write_mmfm_byte(std::vector<uint32_t> &buffer , uint8_t data , uint16_t &crc , uint8_t clock = 0); + static void write_sync(std::vector<uint32_t> &buffer); + static void write_crc(std::vector<uint32_t> &buffer , uint16_t crc); + static void write_gap(std::vector<uint32_t> &buffer , unsigned size_00 , unsigned size_ff); + static void write_sector(std::vector<uint32_t> &buffer , uint8_t track_no , uint8_t sect_no , const uint8_t *sect_data); + static void fill_with_gap4(std::vector<uint32_t> &buffer); + static std::vector<uint8_t> get_next_id_n_block(const std::vector<bool> &bitstream , int& pos , int& start_pos); + static bool get_next_sector(const std::vector<bool> &bitstream , int& pos , unsigned& track , unsigned& sector , uint8_t *sector_data); +}; + +extern const img_format FLOPPY_IMG_FORMAT; + +#endif // MAME_FORMATS_IMG_DSK_H |