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Diffstat (limited to 'src/mame/drivers/s7.cpp')
-rw-r--r--src/mame/drivers/s7.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/s7.cpp b/src/mame/drivers/s7.cpp
index 63293ee0360..5bef3f1258e 100644
--- a/src/mame/drivers/s7.cpp
+++ b/src/mame/drivers/s7.cpp
@@ -63,6 +63,7 @@ ToDo:
#include "machine/6821pia.h"
#include "sound/dac.h"
#include "sound/hc55516.h"
+#include "sound/volt_reg.h"
#include "speaker.h"
#include "s7.lh"
@@ -485,7 +486,8 @@ static MACHINE_CONFIG_START( s7 )
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", MC1408, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5)
- 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)
MCFG_SPEAKER_STANDARD_MONO("speech")
MCFG_SOUND_ADD("hc55516", HC55516, 0)