// license:BSD-3-Clause // copyright-holders: Ansgar Kückes, F. Ulivi /********************************************************************* hpi_dsk.h "HPI" disk format *********************************************************************/ #ifndef MAME_FORMATS_HPI_DSK_H #define MAME_FORMATS_HPI_DSK_H #pragma once #include "flopimg.h" #include #include class hpi_format : public floppy_image_format_t { public: // Geometry constants static constexpr unsigned HPI_TRACKS = 77; static constexpr unsigned HPI_9885_TRACKS = 67; // Tracks visible to HP9885 drives static constexpr unsigned HPI_HEADS = 2; static constexpr unsigned HPI_SECTORS = 30; static constexpr unsigned HPI_SECTOR_SIZE = 256; hpi_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: typedef std::array sector_list_t; static bool geometry_from_size(uint64_t image_size , unsigned& heads , unsigned& tracks); static void interleaved_sectors(unsigned il_factor , sector_list_t& sector_list); static void write_mmfm_bit(std::vector &buffer , bool data_bit , bool clock_bit); static void write_mmfm_byte(std::vector &buffer , uint8_t data , uint8_t clock = 0); static void write_sync(std::vector &buffer); static void write_crc(std::vector &buffer , uint16_t crc); static void write_sector(std::vector &buffer , uint8_t track_no , uint8_t sect_head_no , const uint8_t *sect_data); static void fill_with_gap3(std::vector &buffer); static unsigned chs_to_lba(unsigned cylinder , unsigned head , unsigned sector , unsigned heads); 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& head , unsigned& sector , uint8_t *sector_data); static const uint8_t m_track_skew[ HPI_SECTORS - 1 ][ HPI_HEADS ]; }; extern const hpi_format FLOPPY_HPI_FORMAT; #endif // MAME_FORMATS_HPI_DSK_H