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Diffstat (limited to 'src/mame/drivers/s6a.cpp')
-rw-r--r--src/mame/drivers/s6a.cpp4
1 files changed, 1 insertions, 3 deletions
diff --git a/src/mame/drivers/s6a.cpp b/src/mame/drivers/s6a.cpp
index 6e055c6b28e..0a1601d2e72 100644
--- a/src/mame/drivers/s6a.cpp
+++ b/src/mame/drivers/s6a.cpp
@@ -46,7 +46,6 @@ ToDo:
#include "machine/6821pia.h"
#include "sound/dac.h"
#include "sound/hc55516.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
#include "s6a.lh"
@@ -433,8 +432,7 @@ static MACHINE_CONFIG_START( s6a )
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", MC1408, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5)
- 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_SOUND_REFERENCE_INPUT(DAC_VREF_POS_INPUT, 1.0) MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_NEG_INPUT, -1.0)
MCFG_SPEAKER_STANDARD_MONO("speech")
MCFG_SOUND_ADD("hc55516", HC55516, 0)