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-rw-r--r--utils/gen_adldata/file_formats/load_wopl.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/utils/gen_adldata/file_formats/load_wopl.h b/utils/gen_adldata/file_formats/load_wopl.h
index d10d58f..d0c01d3 100644
--- a/utils/gen_adldata/file_formats/load_wopl.h
+++ b/utils/gen_adldata/file_formats/load_wopl.h
@@ -176,11 +176,11 @@ static bool LoadWopl(const char *fn, unsigned bank, const char *prefix)
tmp[0].diff = false;
tmp[1].diff = real4op && !tmp2.pseudo4op;
- int fine_tune = (int)data[offset + 37];
+ int8_t fine_tune = (int8_t)data[offset + 37];
if(fine_tune != 0)
{
// Simulate behavior of DMX second voice detune
- tmp2.voice2_fine_tune = (double)((fine_tune >> 1) - 64) / 32.0;
+ tmp2.voice2_fine_tune = (double)((((int)fine_tune + 128) >> 1) - 64) / 32.0;
}
uint32_t gmno = is_percussion ? i + 128 : i;