diff options
Diffstat (limited to 'src/lib/formats/esq16_dsk.cpp')
-rw-r--r-- | src/lib/formats/esq16_dsk.cpp | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/src/lib/formats/esq16_dsk.cpp b/src/lib/formats/esq16_dsk.cpp new file mode 100644 index 00000000000..517bb756577 --- /dev/null +++ b/src/lib/formats/esq16_dsk.cpp @@ -0,0 +1,154 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont, Olivier Galibert +/********************************************************************* + + formats/esq16_dsk.c + + Formats for 16-bit Ensoniq synthesizers and samplers + + Disk is PC MFM, 80 tracks, double-sided, with 10 sectors per track + +*********************************************************************/ + +#include <assert.h> + +#include "flopimg.h" +#include "formats/esq16_dsk.h" + +const floppy_image_format_t::desc_e esqimg_format::esq_10_desc[] = { + { MFM, 0x4e, 80 }, + { MFM, 0x00, 12 }, + { RAW, 0x5224, 3 }, + { MFM, 0xfc, 1 }, + { MFM, 0x4e, 50 }, + { MFM, 0x00, 12 }, + { SECTOR_LOOP_START, 0, 9 }, + { 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 } +}; + +esqimg_format::esqimg_format() +{ +} + +const char *esqimg_format::name() const +{ + return "esq16"; +} + +const char *esqimg_format::description() const +{ + return "Ensoniq VFX-SD/SD-1/EPS-16 floppy disk image"; +} + +const char *esqimg_format::extensions() const +{ + return "img"; +} + +bool esqimg_format::supports_save() const +{ + return true; +} + +void esqimg_format::find_size(io_generic *io, UINT8 &track_count, UINT8 &head_count, UINT8 §or_count) +{ + UINT64 size = io_generic_size(io); + track_count = 80; + head_count = 2; + sector_count = 10; + + UINT32 expected_size = 512 * track_count*head_count*sector_count; + if (size == expected_size) + { + return; + } + + track_count = head_count = sector_count = 0; +} + +int esqimg_format::identify(io_generic *io, UINT32 form_factor) +{ + UINT8 track_count, head_count, sector_count; + find_size(io, track_count, head_count, sector_count); + + if(track_count) + return 50; + return 0; +} + +bool esqimg_format::load(io_generic *io, UINT32 form_factor, floppy_image *image) +{ + UINT8 track_count, head_count, sector_count; + find_size(io, track_count, head_count, sector_count); + + UINT8 sectdata[10*512]; + desc_s sectors[10]; + for(int i=0; i<sector_count; i++) { + sectors[i].data = sectdata + 512*i; + sectors[i].size = 512; + sectors[i].sector_id = i; + } + + int track_size = sector_count*512; + for(int track=0; track < track_count; track++) { + for(int head=0; head < head_count; head++) { + io_generic_read(io, sectdata, (track*head_count + head)*track_size, track_size); + generate_track(esq_10_desc, track, head, sectors, sector_count, 110528, image); + } + } + + image->set_variant(floppy_image::DSDD); + + return true; +} + +bool esqimg_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 = 2; + + if(sector_count != 10) + sector_count = 10; + + UINT8 sectdata[11*512]; + int track_size = sector_count*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_ESQIMG_FORMAT = &floppy_image_format_creator<esqimg_format>; |