// license:BSD-3-Clause // copyright-holders:Olivier Galibert /************************************************************************* formats/coupedsk.cpp SAM Coupe disk image formats **************************************************************************/ #include "coupedsk.h" #include "ioprocs.h" const floppy_image_format_t::desc_e mgt_format::desc_10[] = { { MFM, 0x4e, 60 }, { SECTOR_LOOP_START, 0, 9 }, { MFM, 0x00, 12 }, { CRC_CCITT_START, 1 }, { RAW, 0x4489, 3 }, { MFM, 0xfe, 1 }, { TRACK_ID }, { HEAD_ID }, { SECTOR_ID }, { SIZE_ID }, { CRC_END, 1 }, { CRC, 1 }, { MFM, 0x4e, 22 }, { MFM, 0x00, 12 }, { CRC_CCITT_START, 2 }, { RAW, 0x4489, 3 }, { MFM, 0xfb, 1 }, { SECTOR_DATA, -1 }, { CRC_END, 2 }, { CRC, 2 }, { MFM, 0x4e, 24 }, { SECTOR_LOOP_END }, { MFM, 0x4e, 210 }, { END } }; mgt_format::mgt_format() { } const char *mgt_format::name() const noexcept { return "mgt"; } const char *mgt_format::description() const noexcept { return "Sam Coupe MGT image format"; } const char *mgt_format::extensions() const noexcept { return "mgt,dsk"; } bool mgt_format::supports_save() const noexcept { return true; } int mgt_format::identify(util::random_read &io, uint32_t form_factor, const std::vector &variants) const { uint64_t size; if(io.length(size)) return 0; if(/*size == 737280 || */ size == 819200) return FIFID_SIZE; return 0; } bool mgt_format::load(util::random_read &io, uint32_t form_factor, const std::vector &variants, floppy_image &image) const { uint64_t size; if(io.length(size)) return false; int const sector_count = (size == 737280) ? 9 : 10; uint8_t sectdata[10*512]; desc_s sectors[10]; for(int i=0; i &variants, const floppy_image &image) const { int track_count, head_count, sector_count; get_geometry_mfm_pc(image, 2000, track_count, head_count, sector_count); if(sector_count > 10) sector_count = 10; else if(sector_count < 9) sector_count = 9; uint8_t sectdata[10*512]; int track_size = sector_count*512; for(int head=0; head < 2; head++) { for(int track=0; track < 80; track++) { get_track_data_mfm_pc(track, head, image, 2000, 512, sector_count, sectdata); /*auto const [err, actual] =*/ write_at(io, (track*2+head)*track_size, sectdata, track_size); // FIXME: check for errors } } return true; } const mgt_format FLOPPY_MGT_FORMAT;