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Diffstat (limited to 'src/mame/audio/harddriv.cpp')
-rw-r--r--src/mame/audio/harddriv.cpp4
1 files changed, 1 insertions, 3 deletions
diff --git a/src/mame/audio/harddriv.cpp b/src/mame/audio/harddriv.cpp
index 06677fbf79e..167a698a1b7 100644
--- a/src/mame/audio/harddriv.cpp
+++ b/src/mame/audio/harddriv.cpp
@@ -11,7 +11,6 @@
#include "machine/atarigen.h"
#include "cpu/tms32010/tms32010.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
@@ -453,6 +452,5 @@ MACHINE_CONFIG_MEMBER( harddriv_sound_board_device::device_add_mconfig )
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", AM6012, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5) // ls374d.75e + ls374d.90e + am6012
- 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)
MACHINE_CONFIG_END