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-rw-r--r--src/mame/drivers/sbasketb.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/sbasketb.cpp b/src/mame/drivers/sbasketb.cpp
index aa8a755f3af..86194b70412 100644
--- a/src/mame/drivers/sbasketb.cpp
+++ b/src/mame/drivers/sbasketb.cpp
@@ -52,6 +52,7 @@ CPU/Video Board Parts:
#include "machine/konami1.h"
#include "machine/watchdog.h"
#include "sound/dac.h"
+#include "sound/volt_reg.h"
#include "screen.h"
#include "speaker.h"
@@ -234,7 +235,8 @@ static MACHINE_CONFIG_START( sbasketb )
MCFG_SOUND_ADD("trackfld_audio", TRACKFLD_AUDIO, 0)
MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.4) // unknown DAC
- 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_SOUND_ADD("snsnd", SN76489, XTAL_14_31818MHz / 8)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 1.0)