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-rw-r--r--src/lib/formats/flopimg.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/formats/flopimg.cpp b/src/lib/formats/flopimg.cpp
index e6890ea7af3..3a89cb93016 100644
--- a/src/lib/formats/flopimg.cpp
+++ b/src/lib/formats/flopimg.cpp
@@ -1684,6 +1684,10 @@ void floppy_image_format_t::generate_track_from_bitstream(int track, int head, c
std::vector<uint32_t> &dest = image->get_buffer(track, head, subtrack);
dest.clear();
+ // If the bitstream has an odd number of inversions, one needs to be added.
+ // Put in in the middle of the half window after the center inversion, where
+ // any fdc ignores it.
+
int inversions = 0;
for(int i=0; i != track_size; i++)
if(trackbuf[i >> 3] & (0x80 >> (i & 7)))