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Diffstat (limited to 'src/mame/drivers/murogem.cpp')
-rw-r--r--src/mame/drivers/murogem.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/murogem.cpp b/src/mame/drivers/murogem.cpp
index 4f22c2aba2f..37adb074bc2 100644
--- a/src/mame/drivers/murogem.cpp
+++ b/src/mame/drivers/murogem.cpp
@@ -109,6 +109,7 @@ val (hex): 27 20 22 04 26 00 20 20 00 07 00 00 80 00 00 00 ns
#include "emu.h"
#include "cpu/m6800/m6800.h"
#include "sound/dac.h"
+#include "sound/volt_reg.h"
#include "video/mc6845.h"
#include "screen.h"
#include "speaker.h"
@@ -270,7 +271,8 @@ static MACHINE_CONFIG_START( murogem )
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", DAC_1BIT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.375)
- 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)
MACHINE_CONFIG_END