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-rw-r--r--src/lib/formats/afs_dsk.cpp60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/lib/formats/afs_dsk.cpp b/src/lib/formats/afs_dsk.cpp
new file mode 100644
index 00000000000..5e1ff5aa66c
--- /dev/null
+++ b/src/lib/formats/afs_dsk.cpp
@@ -0,0 +1,60 @@
+// license:GPL-2.0+
+// copyright-holders:Nigel Barnes
+/***************************************************************************
+
+ Acorn FileStore
+
+ Disk image formats
+
+***************************************************************************/
+
+#include "afs_dsk.h"
+
+
+afs_format::afs_format() : wd177x_format(formats)
+{
+}
+
+const char *afs_format::name() const
+{
+ return "afs";
+}
+
+const char *afs_format::description() const
+{
+ return "Acorn FileStore disk image";
+}
+
+const char *afs_format::extensions() const
+{
+ return "adl,img";
+}
+
+int afs_format::identify(io_generic *io, UINT32 form_factor)
+{
+ int type = find_size(io, form_factor);
+
+ if (type != -1)
+ return 50;
+ return 0;
+}
+
+int afs_format::get_image_offset(const format &f, int head, int track)
+{
+ if (f.sector_base_id == -1)
+ return (track * f.head_count + head) * compute_track_size(f);
+ else
+ return (f.track_count * head + track) * compute_track_size(f);
+}
+
+const afs_format::format afs_format::formats[] =
+{
+ { // 640K 3 1/2 inch 80 track double sided double density (interleaved) - gaps unverified
+ floppy_image::FF_35, floppy_image::DSQD, floppy_image::MFM,
+ 2000, 16, 80, 2, 256, {}, -1, { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }, 60, 22, 43
+ },
+ {}
+};
+
+
+const floppy_format_type FLOPPY_AFS_FORMAT = &floppy_image_format_creator<afs_format>;