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Diffstat (limited to 'src/mame/drivers/novagmcs48.cpp')
-rw-r--r--src/mame/drivers/novagmcs48.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/novagmcs48.cpp b/src/mame/drivers/novagmcs48.cpp
index 2f8dc95febe..d36a2d9e408 100644
--- a/src/mame/drivers/novagmcs48.cpp
+++ b/src/mame/drivers/novagmcs48.cpp
@@ -31,6 +31,7 @@ Otherwise, it's identical to Presto. The MCU internal ROM is same too.
#include "includes/novagbase.h"
#include "cpu/mcs48/mcs48.h"
+#include "sound/volt_reg.h"
#include "speaker.h"
// internal artwork
@@ -155,7 +156,8 @@ static MACHINE_CONFIG_START( presto )
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", DAC_1BIT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.25)
- 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)
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( octo, presto )