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Diffstat (limited to 'src/mame/drivers/bw12.cpp')
-rw-r--r--src/mame/drivers/bw12.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/bw12.cpp b/src/mame/drivers/bw12.cpp
index f7568b048c2..744e85edfb6 100644
--- a/src/mame/drivers/bw12.cpp
+++ b/src/mame/drivers/bw12.cpp
@@ -29,6 +29,7 @@
#include "includes/bw12.h"
#include "bus/rs232/rs232.h"
#include "sound/dac.h"
+#include "sound/volt_reg.h"
#include "screen.h"
#include "softlist.h"
#include "speaker.h"
@@ -567,7 +568,8 @@ static MACHINE_CONFIG_START( common )
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", MC1408, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.125) // ls273.ic5 + mc1408.ic4
- 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)
/* devices */
MCFG_TIMER_DRIVER_ADD(FLOPPY_TIMER_TAG, bw12_state, floppy_motor_off_tick)