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Diffstat (limited to 'src/mame/drivers/truco.cpp')
-rw-r--r--src/mame/drivers/truco.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/truco.cpp b/src/mame/drivers/truco.cpp
index 0601ef4443a..cf2bb59b5b6 100644
--- a/src/mame/drivers/truco.cpp
+++ b/src/mame/drivers/truco.cpp
@@ -206,6 +206,7 @@
#include "cpu/m6809/m6809.h"
#include "machine/6821pia.h"
+#include "sound/volt_reg.h"
#include "video/mc6845.h"
#include "screen.h"
#include "speaker.h"
@@ -453,7 +454,8 @@ static MACHINE_CONFIG_START( truco )
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", DAC_1BIT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.4)
- MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_POS_INPUT, 1.0)
+ MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
+ MCFG_SOUND_ROUTE_EX(0, "dac", 1.0, DAC_VREF_POS_INPUT)
MACHINE_CONFIG_END