// 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 // Geometry constants constexpr unsigned HPI_TRACKS = 77; constexpr unsigned HPI_HEADS = 2; constexpr unsigned HPI_SECTORS = 30; constexpr unsigned HPI_SECTOR_SIZE = 256; class hpi_format : public floppy_image_format_t { public: hpi_format(); virtual int identify(io_generic *io, uint32_t form_factor) override; virtual bool load(io_generic *io, uint32_t form_factor, floppy_image *image) override; virtual bool save(io_generic *io, floppy_image *image) override; virtual const char *name() const override; virtual const char *description() const override; virtual const char *extensions() const override; virtual bool supports_save() const 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); void write_mmfm_bit(std::vector &buffer , bool data_bit , bool clock_bit); void write_mmfm_byte(std::vector &buffer , uint8_t data , uint8_t clock = 0); void write_sync(std::vector &buffer); void write_crc(std::vector &buffer , uint16_t crc); void write_sector(std::vector &buffer , uint8_t track_no , uint8_t sect_head_no , const uint8_t *sect_data); void fill_with_gap3(std::vector &buffer); static unsigned chs_to_lba(unsigned cylinder , unsigned head , unsigned sector , unsigned heads); std::vector get_next_id_n_block(const uint8_t *bitstream , int bitstream_size , int& pos , int& start_pos); bool get_next_sector(const uint8_t *bitstream , int bitstream_size , 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 floppy_format_type FLOPPY_HPI_FORMAT; #endif // MAME_FORMATS_HPI_DSK_H