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Diffstat (limited to 'src/devices/bus/isa/dectalk.cpp')
-rw-r--r--src/devices/bus/isa/dectalk.cpp4
1 files changed, 1 insertions, 3 deletions
diff --git a/src/devices/bus/isa/dectalk.cpp b/src/devices/bus/isa/dectalk.cpp
index 4b0811bdbea..bb3f0b91603 100644
--- a/src/devices/bus/isa/dectalk.cpp
+++ b/src/devices/bus/isa/dectalk.cpp
@@ -3,7 +3,6 @@
#include "emu.h"
#include "dectalk.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
@@ -166,8 +165,7 @@ MACHINE_CONFIG_MEMBER( dectalk_isa_device::device_add_mconfig )
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", DAC_12BIT_R2R, 0) MCFG_SOUND_ROUTE(0, "speaker", 1.0) // unknown DAC
- 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
WRITE8_MEMBER(dectalk_isa_device::write)