summaryrefslogtreecommitdiffstatshomepage
path: root/src/lib/formats/naslite_dsk.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/formats/naslite_dsk.cpp')
-rw-r--r--src/lib/formats/naslite_dsk.cpp55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/lib/formats/naslite_dsk.cpp b/src/lib/formats/naslite_dsk.cpp
new file mode 100644
index 00000000000..342407a7c95
--- /dev/null
+++ b/src/lib/formats/naslite_dsk.cpp
@@ -0,0 +1,55 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/*********************************************************************
+
+ formats/naslite_dsk.c
+
+ NASLite 1.72MB with funky interleaving format
+
+*********************************************************************/
+
+#include <assert.h>
+
+#include "formats/naslite_dsk.h"
+
+naslite_format::naslite_format() : upd765_format(formats)
+{
+}
+
+const char *naslite_format::name() const
+{
+ return "NASLite";
+}
+
+const char *naslite_format::description() const
+{
+ return "NASLite disk image";
+}
+
+const char *naslite_format::extensions() const
+{
+ return "img";
+}
+
+const naslite_format::format naslite_format::formats[] = {
+ {
+ floppy_image::FF_35, floppy_image::DSHD, floppy_image::MFM,
+ 1000, 21, 82, 2, 512, {}, -1, { 0x01, 0x0c, 0x02, 0x0d, 0x03, 0x0e, 0x04, 0x0f, 0x05, 0x10, 0x06, 0x11, 0x07, 0x12, 0x08, 0x13, 0x09, 0x14, 0x0a, 0x15, 0x0b }, 80, 50, 22, 0xc
+ },
+ {}
+};
+
+void naslite_format::build_sector_description(const format &f, UINT8 *sectdata, desc_s *sectors, int track, int head) const
+{
+ for(int i=0; i<f.sector_count; i++) {
+ int cur_offset = 0;
+ for(int j=0; j<f.sector_count; j++)
+ if(f.per_sector_id[j] < f.per_sector_id[i])
+ cur_offset += f.sector_base_size ? f.sector_base_size : f.per_sector_size[j];
+ sectors[i].data = sectdata + cur_offset;
+ sectors[i].size = f.sector_base_size ? f.sector_base_size : f.per_sector_size[i];
+ sectors[i].sector_id = f.per_sector_id[(i + (track * 0x0a) + (head * 0x11)) % f.sector_count];
+ }
+}
+
+const floppy_format_type FLOPPY_NASLITE_FORMAT = &floppy_image_format_creator<naslite_format>;