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Diffstat (limited to 'src/mame/drivers/galaxian.cpp')
-rw-r--r--src/mame/drivers/galaxian.cpp7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/mame/drivers/galaxian.cpp b/src/mame/drivers/galaxian.cpp
index a1d6e5800b7..2a1972a75fc 100644
--- a/src/mame/drivers/galaxian.cpp
+++ b/src/mame/drivers/galaxian.cpp
@@ -664,6 +664,7 @@ TODO:
#include "machine/watchdog.h"
#include "sound/discrete.h"
#include "sound/sn76496.h"
+#include "sound/volt_reg.h"
#include "screen.h"
#include "speaker.h"
@@ -5985,7 +5986,8 @@ static MACHINE_CONFIG_DERIVED( kingball, mooncrst )
/* sound hardware */
MCFG_SOUND_ADD("dac", DAC_4BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.53) // unknown DAC
- 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) MCFG_SOUND_ROUTE_EX(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
MACHINE_CONFIG_END
@@ -6168,7 +6170,8 @@ static MACHINE_CONFIG_DERIVED( sfx, scramble_base )
/* DAC for the sample player */
MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 1.0) // 16-pin IC (not identified by schematics)
- 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) MCFG_SOUND_ROUTE_EX(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
MACHINE_CONFIG_END