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-rw-r--r--src/lib/formats/ppg_dsk.cpp67
1 files changed, 67 insertions, 0 deletions
diff --git a/src/lib/formats/ppg_dsk.cpp b/src/lib/formats/ppg_dsk.cpp
new file mode 100644
index 00000000000..dd08a841e00
--- /dev/null
+++ b/src/lib/formats/ppg_dsk.cpp
@@ -0,0 +1,67 @@
+// license:BSD-3-Clause
+// copyright-holders:Sergey Svishchev
+/*********************************************************************
+
+ formats/ppg_dsk.c
+
+ PPG Waveterm formats
+
+*********************************************************************/
+
+#include <assert.h>
+
+#include "formats/ppg_dsk.h"
+
+ppg_format::ppg_format() : wd177x_format(formats)
+{
+}
+
+const char *ppg_format::name() const
+{
+ return "ppg";
+}
+
+const char *ppg_format::description() const
+{
+ return "PPG Waveterm disk image";
+}
+
+const char *ppg_format::extensions() const
+{
+ return "wta";
+}
+
+const ppg_format::format ppg_format::formats[] = {
+ // .dsk formats used by flexemu. gaps unverified.
+ { floppy_image::FF_525, floppy_image::SSDD, floppy_image::MFM,
+ 2000, 10, 35, 1, 256, {}, 1, {}, 32, 22, 31 },
+ { floppy_image::FF_525, floppy_image::SSDD, floppy_image::MFM,
+ 2000, 10, 40, 1, 256, {}, 1, {}, 32, 22, 31 },
+ { floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM,
+ 2000, 10, 35, 2, 256, {}, 1, {}, 32, 22, 31 },
+ { floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM,
+ 2000, 10, 40, 2, 256, {}, 1, {}, 32, 22, 31 },
+ { floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM,
+ 2000, 20, 35, 2, 256, {}, 1, {}, 32, 2, 2 },
+ { floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM,
+ 2000, 20, 40, 2, 256, {}, 1, {}, 32, 2, 2 },
+
+ // .wta format used by PPG Waveterm A transfer software. gaps unverified.
+ { floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM,
+ 2000, 16, 77, 2, 256, {}, 1, {}, 32, 22, 31 },
+ {}
+};
+
+void ppg_format::build_sector_description(const format &f, uint8_t *sectdata, desc_s *sectors, int track, int head) const
+{
+ int cur_offset = 0;
+
+ for (int i=0; i<f.sector_count; i++) {
+ sectors[i].data = sectdata + cur_offset;
+ sectors[i].size = f.sector_base_size ? f.sector_base_size : f.per_sector_size[i];
+ cur_offset += sectors[i].size;
+ sectors[i].sector_id = i + f.sector_base_id + (head * f.sector_count);
+ }
+}
+
+const floppy_format_type FLOPPY_PPG_FORMAT = &floppy_image_format_creator<ppg_format>;