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-rw-r--r--src/mame/drivers/px4.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mame/drivers/px4.cpp b/src/mame/drivers/px4.cpp
index 2c191086c26..4b574a738d7 100644
--- a/src/mame/drivers/px4.cpp
+++ b/src/mame/drivers/px4.cpp
@@ -22,6 +22,7 @@
#include "machine/ram.h"
#include "machine/timer.h"
#include "sound/spkrdev.h"
+#include "sound/wave.h"
#include "diserial.h"
#include "emupal.h"
@@ -1507,6 +1508,7 @@ void px4_state::px4(machine_config &config)
// sound hardware
SPEAKER(config, "mono").front_center();
SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 1.0);
+ WAVE(config, "wave", m_ext_cas).add_route(ALL_OUTPUTS, "mono", 0.05);
TIMER(config, "one_sec").configure_periodic(FUNC(px4_state::upd7508_1sec_callback), attotime::from_seconds(1));
TIMER(config, "frc").configure_periodic(FUNC(px4_state::frc_tick), attotime::from_hz(XTAL(7'372'800) / 2 / 6));