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-rw-r--r--setup/sound.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/setup/sound.h b/setup/sound.h
index 6c366151..eb386d6f 100644
--- a/setup/sound.h
+++ b/setup/sound.h
@@ -44,6 +44,7 @@ extern int snd_musicdevice;
extern int musicVolume;
extern int snd_samplerate;
+extern int opl_io_port;
extern int use_libsamplerate;