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-rw-r--r--src/devices/sound/volt_reg.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/devices/sound/volt_reg.h b/src/devices/sound/volt_reg.h
index f687b3a7713..6493dbc7bd4 100644
--- a/src/devices/sound/volt_reg.h
+++ b/src/devices/sound/volt_reg.h
@@ -22,6 +22,11 @@ class voltage_regulator_device : public device_t, public device_sound_interface
public:
void set_output(double analogue_dc) { m_output = (analogue_dc * 32768) / 5.0f; }
+ voltage_regulator_device(const machine_config &mconfig, const char *tag, device_t *owner)
+ : voltage_regulator_device(mconfig, tag, owner, (uint32_t)0)
+ {
+ }
+
voltage_regulator_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual bool issound() override { return false; }