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https://github.com/holub/mame
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94 lines
1.8 KiB
C
94 lines
1.8 KiB
C
/*********************************************************************
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formats/cpis_dsk.c
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Telenova Compis disk images
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*********************************************************************/
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#include <string.h>
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#include "formats/cpis_dsk.h"
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#include "formats/basicdsk.h"
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static int compis_get_tracks_and_sectors(floppy_image_legacy *floppy, int *tracks, int *sectors)
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{
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switch(floppy_image_size(floppy)) {
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case 0x50000: /* 320 KB */
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*tracks = 40;
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*sectors = 8;
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break;
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case 0x5a000: /* 360 KB */
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*tracks = 40;
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*sectors = 9;
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break;
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case 0xa0000: /* 640 KB */
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*tracks = 80;
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*sectors = 8;
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break;
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case 0xb4000: /* 720 KB */
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*tracks = 80;
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*sectors = 9;
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break;
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case 0x12c000: /* 1200 KB */
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*tracks = 80;
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*sectors = 15;
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break;
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default:
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return 0;
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}
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return 1;
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}
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static FLOPPY_IDENTIFY(compis_dsk_identify)
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{
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int dummy;
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*vote = compis_get_tracks_and_sectors(floppy, &dummy, &dummy) ? 100 : 0;
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return FLOPPY_ERROR_SUCCESS;
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}
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static FLOPPY_CONSTRUCT(compis_dsk_construct)
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{
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struct basicdsk_geometry geometry;
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memset(&geometry, 0, sizeof(geometry));
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geometry.heads = 1;
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geometry.first_sector_id = 1;
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geometry.sector_length = 512;
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if (params)
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{
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/* create */
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geometry.tracks = option_resolution_lookup_int(params, PARAM_TRACKS);
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geometry.sectors = option_resolution_lookup_int(params, PARAM_SECTORS);
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}
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else
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{
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/* open */
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if (!compis_get_tracks_and_sectors(floppy, &geometry.tracks, &geometry.sectors))
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return FLOPPY_ERROR_INVALIDIMAGE;
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}
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return basicdsk_construct(floppy, &geometry);
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}
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/* ----------------------------------------------------------------------- */
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LEGACY_FLOPPY_OPTIONS_START( compis )
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LEGACY_FLOPPY_OPTION( compis_dsk, "dsk", "Compis floppy disk image", compis_dsk_identify, compis_dsk_construct, NULL,
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TRACKS(40/[80])
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SECTORS(8/[9]/15))
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LEGACY_FLOPPY_OPTIONS_END
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