mirror of
https://github.com/holub/mame
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151 lines
3.3 KiB
C
151 lines
3.3 KiB
C
/*********************************************************************
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formats/esq16_dsk.c
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Formats for 16-bit Ensoniq synthesizers and samplers
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Disk is PC MFM, 80 tracks, double-sided, with 10 sectors per track
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*********************************************************************/
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#include "emu.h"
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#include "flopimg.h"
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#include "formats/esq16_dsk.h"
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const floppy_image_format_t::desc_e esqimg_format::esq_10_desc[] = {
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{ MFM, 0x4e, 80 },
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{ MFM, 0x00, 12 },
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{ RAW, 0x5224, 3 },
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{ MFM, 0xfc, 1 },
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{ MFM, 0x4e, 50 },
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{ MFM, 0x00, 12 },
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{ SECTOR_LOOP_START, 0, 9 },
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{ CRC_CCITT_START, 1 },
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{ RAW, 0x4489, 3 },
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{ MFM, 0xfe, 1 },
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{ TRACK_ID },
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{ HEAD_ID },
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{ SECTOR_ID },
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{ SIZE_ID },
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{ CRC_END, 1 },
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{ CRC, 1 },
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{ MFM, 0x4e, 22 },
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{ MFM, 0x00, 12 },
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{ CRC_CCITT_START, 2 },
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{ RAW, 0x4489, 3 },
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{ MFM, 0xfb, 1 },
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{ SECTOR_DATA, -1 },
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{ CRC_END, 2 },
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{ CRC, 2 },
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{ MFM, 0x4e, 84 },
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{ MFM, 0x00, 12 },
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{ SECTOR_LOOP_END },
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{ MFM, 0x4e, 170 },
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{ END }
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};
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esqimg_format::esqimg_format()
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{
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}
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const char *esqimg_format::name() const
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{
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return "img";
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}
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const char *esqimg_format::description() const
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{
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return "Ensoniq VFX-SD/SD-1/EPS-16 floppy disk image";
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}
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const char *esqimg_format::extensions() const
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{
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return "img";
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}
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bool esqimg_format::supports_save() const
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{
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return true;
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}
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void esqimg_format::find_size(io_generic *io, int &track_count, int &head_count, int §or_count)
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{
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int size = io_generic_size(io);
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track_count = 80;
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head_count = 2;
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sector_count = 10;
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if (size == 512*track_count*head_count*sector_count)
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{
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return;
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}
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track_count = head_count = sector_count = 0;
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}
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int esqimg_format::identify(io_generic *io, UINT32 form_factor)
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{
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int track_count, head_count, sector_count;
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find_size(io, track_count, head_count, sector_count);
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if(track_count)
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return 50;
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return 0;
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}
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bool esqimg_format::load(io_generic *io, UINT32 form_factor, floppy_image *image)
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{
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int track_count, head_count, sector_count;
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find_size(io, track_count, head_count, sector_count);
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UINT8 sectdata[10*512];
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desc_s sectors[10];
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for(int i=0; i<sector_count; i++) {
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sectors[i].data = sectdata + 512*i;
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sectors[i].size = 512;
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sectors[i].sector_id = i;
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}
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int track_size = sector_count*512;
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for(int track=0; track < track_count; track++) {
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for(int head=0; head < head_count; head++) {
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io_generic_read(io, sectdata, (track*head_count + head)*track_size, track_size);
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generate_track(esq_10_desc, track, head, sectors, sector_count, 110528, image);
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}
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}
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image->set_variant(floppy_image::DSDD);
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return true;
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}
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bool esqimg_format::save(io_generic *io, floppy_image *image)
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{
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int track_count, head_count, sector_count;
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get_geometry_mfm_pc(image, 2000, track_count, head_count, sector_count);
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if(track_count != 80)
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track_count = 80;
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// Happens for a fully unformatted floppy
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if(!head_count)
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head_count = 2;
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if(sector_count != 10)
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sector_count = 10;
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UINT8 sectdata[11*512];
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int track_size = sector_count*512;
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for(int track=0; track < track_count; track++) {
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for(int head=0; head < head_count; head++) {
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get_track_data_mfm_pc(track, head, image, 2000, 512, sector_count, sectdata);
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io_generic_write(io, sectdata, (track*head_count + head)*track_size, track_size);
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}
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}
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return true;
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}
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const floppy_format_type FLOPPY_ESQIMG_FORMAT = &floppy_image_format_creator<esqimg_format>;
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