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Diffstat (limited to 'src/mame/drivers/vg5k.cpp')
-rw-r--r--src/mame/drivers/vg5k.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/vg5k.cpp b/src/mame/drivers/vg5k.cpp
index bfbacb18346..be0261ff4c8 100644
--- a/src/mame/drivers/vg5k.cpp
+++ b/src/mame/drivers/vg5k.cpp
@@ -55,6 +55,7 @@
#include "machine/ram.h"
#include "machine/timer.h"
#include "sound/dac.h"
+#include "sound/volt_reg.h"
#include "sound/wave.h"
#include "video/ef9345.h"
@@ -385,7 +386,8 @@ static MACHINE_CONFIG_START( vg5k )
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", DAC_1BIT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.125)
- MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_POS_INPUT, 1.0) MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_NEG_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)
/* cassette */
MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")