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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, 0 insertions, 4 deletions
diff --git a/src/devices/bus/msx_cart/konami.cpp b/src/devices/bus/msx_cart/konami.cpp
index f2caa5f6940..022f45a4c2a 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"
@@ -489,9 +488,6 @@ void msx_cart_synthesizer_device::device_add_mconfig(machine_config &config)
// 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'.
SPEAKER(config, "speaker").front_center();
DAC_8BIT_R2R(config, m_dac, 0).add_route(ALL_OUTPUTS, "speaker", 0.1); // unknown DAC
- voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref"));
- vref.add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
- vref.add_route(0, "dac", -1.0, DAC_VREF_NEG_INPUT);
}