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-rw-r--r--src/mame/drivers/royalmah.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/royalmah.cpp b/src/mame/drivers/royalmah.cpp
index 167a85f7fee..16513c25fda 100644
--- a/src/mame/drivers/royalmah.cpp
+++ b/src/mame/drivers/royalmah.cpp
@@ -102,6 +102,7 @@ Stephh's notes (based on the games Z80 code and some tests) :
#include "machine/nvram.h"
#include "sound/ay8910.h"
#include "sound/dac.h"
+#include "sound/volt_reg.h"
#include "video/mc6845.h"
#include "screen.h"
#include "speaker.h"
@@ -3434,7 +3435,8 @@ static MACHINE_CONFIG_DERIVED( jansou, royalmah )
MCFG_GENERIC_LATCH_8_ADD("soundlatch")
MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.25) // 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)
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( dondenmj, royalmah )