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-rw-r--r--trunk/src/lib/formats/coupedsk.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/trunk/src/lib/formats/coupedsk.c b/trunk/src/lib/formats/coupedsk.c
new file mode 100644
index 00000000000..32297663170
--- /dev/null
+++ b/trunk/src/lib/formats/coupedsk.c
@@ -0,0 +1,122 @@
+/*************************************************************************
+
+ formats/coupedsk.c
+
+ SAM Coupe disk image formats
+
+**************************************************************************/
+
+#include "emu.h"
+#include "formats/coupedsk.h"
+#include "flopimg.h"
+
+const floppy_image_format_t::desc_e mgt_format::desc_10[] = {
+ { MFM, 0x4e, 60 },
+ { SECTOR_LOOP_START, 0, 9 },
+ { MFM, 0x00, 12 },
+ { 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, 24 },
+ { SECTOR_LOOP_END },
+ { MFM, 0x4e, 210 },
+ { END }
+};
+
+mgt_format::mgt_format()
+{
+}
+
+const char *mgt_format::name() const
+{
+ return "mgt";
+}
+
+const char *mgt_format::description() const
+{
+ return "Sam Coupe MGT image format";
+}
+
+const char *mgt_format::extensions() const
+{
+ return "mgt,dsk";
+}
+
+bool mgt_format::supports_save() const
+{
+ return true;
+}
+
+int mgt_format::identify(io_generic *io, UINT32 form_factor)
+{
+ int size = io_generic_size(io);
+
+ if(/*size == 737280 || */ size == 819200)
+ return 50;
+
+ return 0;
+}
+
+bool mgt_format::load(io_generic *io, UINT32 form_factor, floppy_image *image)
+{
+ int size = io_generic_size(io);
+ int sector_count = size == 737280 ? 9 : 10;
+
+ 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 + 1;
+ }
+
+ int track_size = sector_count*512;
+ for(int head=0; head < 2; head++) {
+ for(int track=0; track < 80; track++) {
+ io_generic_read(io, sectdata, (track*2+head)*track_size, track_size);
+ generate_track(desc_10, track, head, sectors, sector_count+1, 100000, image);
+ }
+ }
+
+ image->set_variant(floppy_image::DSDD);
+ return true;
+}
+
+bool mgt_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(sector_count > 10)
+ sector_count = 10;
+ else if(sector_count < 9)
+ sector_count = 9;
+
+ UINT8 sectdata[10*512];
+ int track_size = sector_count*512;
+
+ for(int head=0; head < 2; head++) {
+ for(int track=0; track < 80; track++) {
+ get_track_data_mfm_pc(track, head, image, 2000, 512, sector_count, sectdata);
+ io_generic_write(io, sectdata, (head*80 + track)*track_size, track_size);
+ }
+ }
+
+ return true;
+}
+
+const floppy_format_type FLOPPY_MGT_FORMAT = &floppy_image_format_creator<mgt_format>;