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-rw-r--r--src/mame/audio/gottlieb.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mame/audio/gottlieb.h b/src/mame/audio/gottlieb.h
index aa712c02130..8977c3181ab 100644
--- a/src/mame/audio/gottlieb.h
+++ b/src/mame/audio/gottlieb.h
@@ -140,6 +140,7 @@ public:
// internal communications
uint8_t speech_data_r();
uint8_t audio_data_r();
+ uint8_t signal_audio_nmi_r();
void signal_audio_nmi_w(uint8_t data);
void nmi_rate_w(uint8_t data);
CUSTOM_INPUT_MEMBER( speech_drq_custom_r );