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-rw-r--r--src/mame/includes/metro.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/includes/metro.h b/src/mame/includes/metro.h
index cafc5701c94..aa8c8546299 100644
--- a/src/mame/includes/metro.h
+++ b/src/mame/includes/metro.h
@@ -110,7 +110,8 @@ private:
void irq_cause_w(offs_t offset, u8 data);
uint8_t irq_vector_r(offs_t offset);
DECLARE_WRITE16_MEMBER(mouja_irq_timer_ctrl_w);
- DECLARE_WRITE8_MEMBER(soundlatch_w);
+ DECLARE_WRITE8_MEMBER(sound_data_w);
+ TIMER_CALLBACK_MEMBER(sound_data_sync);
DECLARE_READ8_MEMBER(soundstatus_r);
DECLARE_WRITE8_MEMBER(soundstatus_w);
template<int Mask> DECLARE_WRITE8_MEMBER(upd7810_rombank_w);
@@ -227,6 +228,7 @@ private:
emu_timer *m_karatour_irq_timer;
/* sound related */
+ uint8_t m_sound_data;
uint16_t m_soundstatus;
int m_porta;
int m_portb;