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Diffstat (limited to 'src/devices/bus/msx_cart/konami.cpp')
-rw-r--r--src/devices/bus/msx_cart/konami.cpp4
1 files changed, 1 insertions, 3 deletions
diff --git a/src/devices/bus/msx_cart/konami.cpp b/src/devices/bus/msx_cart/konami.cpp
index 46633807d9c..a16ebe8b609 100644
--- a/src/devices/bus/msx_cart/konami.cpp
+++ b/src/devices/bus/msx_cart/konami.cpp
@@ -3,7 +3,6 @@
#include "emu.h"
#include "konami.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
@@ -476,8 +475,7 @@ MACHINE_CONFIG_MEMBER( msx_cart_synthesizer_device::device_add_mconfig )
// This is actually incorrect. The sound output is passed back into the MSX machine where it is mixed internally and output through the system 'speaker'.
MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.1) // 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