// license:BSD-3-Clause // copyright-holders:Nathan Woods /********************************************************************* formats/pc_dsk.c PC disk images *********************************************************************/ #include "formats/pc_dsk.h" #include "ioprocs.h" #include pc_format::pc_format() : upd765_format(formats) { } const char *pc_format::name() const { return "pc"; } const char *pc_format::description() const { return "PC floppy disk image"; } const char *pc_format::extensions() const { return "dsk,ima,img,ufi,360"; } int pc_format::identify(util::random_read &io, uint32_t form_factor, const std::vector &variants) { uint64_t size; if (io.length(size)) { return 0; } /* some 360K images have a 512-byte header */ if (size == 368640 + 0x200) { file_header_skip_bytes = 0x200; } /* Disk Copy 4.2 images have an 84-byte header */ if (size == 1474560 + 84) { file_header_skip_bytes = 84; } /* some 1.44MB images have a 1024-byte footer */ if (size == 1474560 + 0x400) { file_footer_skip_bytes = 0x400; } return upd765_format::identify(io, form_factor, variants); } const pc_format::format pc_format::formats[] = { { /* 160K 5 1/4 inch double density single sided */ floppy_image::FF_525, floppy_image::SSDD, floppy_image::MFM, 2000, 8, 40, 1, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 320K 5 1/4 inch double density */ floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, 2000, 8, 40, 2, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 180K 5 1/4 inch double density single sided */ floppy_image::FF_525, floppy_image::SSDD, floppy_image::MFM, 2000, 9, 40, 1, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 360K 5 1/4 inch double density */ floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, 2000, 9, 40, 2, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 360K 5 1/4 inch double density, 41 tracks */ floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, 2000, 9, 41, 2, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 360K 5 1/4 inch double density, 42 tracks */ floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, 2000, 9, 42, 2, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 400K 5 1/4 inch double density - gaps unverified */ floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, 2000, 10, 40, 2, 512, {}, 1, {}, 80, 50, 22, 36 }, { /* 720K 5 1/4 inch quad density - gaps unverified */ floppy_image::FF_525, floppy_image::DSQD, floppy_image::MFM, 2000, 9, 80, 2, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 1200K 5 1/4 inch high density */ floppy_image::FF_525, floppy_image::DSHD, floppy_image::MFM, 1200, 15, 80, 2, 512, {}, 1, {}, 80, 50, 22, 84 }, { /* 720K 3 1/2 inch double density */ floppy_image::FF_35, floppy_image::DSDD, floppy_image::MFM, 2000, 9, 80, 2, 512, {}, 1, {}, 80, 50, 22, 80 }, { /* 1200K 3 1/2 inch high density (japanese variant) - gaps unverified */ floppy_image::FF_35, floppy_image::DSHD, floppy_image::MFM, 1000, 15, 80, 2, 512, {}, 1, {}, 80, 50, 22, 84 }, { /* 1440K 3 1/2 inch high density */ floppy_image::FF_35, floppy_image::DSHD, floppy_image::MFM, 1000, 18, 80, 2, 512, {}, 1, {}, 80, 50, 22, 108 }, { /* Microsoft DMF 1680K 3 1/2 inch high density - gaps unverified */ floppy_image::FF_35, floppy_image::DSHD, floppy_image::MFM, 1000, 21, 80, 2, 512, {}, 1, {}, 80, 50, 22, 0xc }, { /* 2880K 3 1/2 inch extended density - gaps unverified */ floppy_image::FF_35, floppy_image::DSED, floppy_image::MFM, 500, 36, 80, 2, 512, {}, 1, {}, 80, 50, 41, 80 }, {} }; const floppy_format_type FLOPPY_PC_FORMAT = &floppy_image_format_creator;