// license:BSD-3-Clause // copyright-holders:R. Belmont, Olivier Galibert /********************************************************************* formats/esq8_dsk.c Formats for 8-bit Ensoniq synthesizers and samplers Disk is PC MFM, 40 tracks, single (Mirage) or double (SQ-80) sided, with 6 sectors per track. Sectors 0-4 are 1024 bytes, sector 5 is 512 bytes *********************************************************************/ #include #include "flopimg.h" #include "formats/esq8_dsk.h" const floppy_image_format_t::desc_e esq8img_format::esq_6_desc[] = { { MFM, 0x4e, 80 }, { MFM, 0x00, 12 }, { RAW, 0x5224, 3 }, { MFM, 0xfc, 1 }, { MFM, 0x4e, 50 }, { MFM, 0x00, 12 }, { SECTOR_LOOP_START, 0, 5 }, { 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, 84 }, { MFM, 0x00, 12 }, { SECTOR_LOOP_END }, { MFM, 0x4e, 170 }, { END } }; esq8img_format::esq8img_format() { } const char *esq8img_format::name() const { return "esq8"; } const char *esq8img_format::description() const { return "Ensoniq Mirage/SQ-80 floppy disk image"; } const char *esq8img_format::extensions() const { return "img"; } bool esq8img_format::supports_save() const { return true; } void esq8img_format::find_size(io_generic *io, int &track_count, int &head_count, int §or_count) { uint64_t size = io_generic_size(io); track_count = 80; head_count = 1; sector_count = 6; if (size == 5632 * 80) { return; } track_count = head_count = sector_count = 0; } int esq8img_format::identify(io_generic *io, uint32_t form_factor) { int track_count, head_count, sector_count; find_size(io, track_count, head_count, sector_count); if(track_count) return 50; return 0; } bool esq8img_format::load(io_generic *io, uint32_t form_factor, floppy_image *image) { int track_count, head_count, sector_count; find_size(io, track_count, head_count, sector_count); uint8_t sectdata[(5*1024) + 512]; desc_s sectors[6]; for(int i=0; iset_variant(floppy_image::DSDD); return true; } bool esq8img_format::save(io_generic *io, floppy_image *image) { int track_count, head_count, sector_count; get_geometry_mfm_pc(image, 2000, track_count, head_count, sector_count); if(track_count != 80) track_count = 80; // Happens for a fully unformatted floppy if(!head_count) head_count = 1; if(sector_count != 6) sector_count = 6; uint8_t sectdata[10*512]; int track_size = (5*1024) + 512; for(int track=0; track < track_count; track++) { for(int head=0; head < head_count; head++) { get_track_data_mfm_pc(track, head, image, 2000, 512, sector_count, sectdata); io_generic_write(io, sectdata, (track*head_count + head)*track_size, track_size); } } return true; } const floppy_format_type FLOPPY_ESQ8IMG_FORMAT = &floppy_image_format_creator;