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Diffstat (limited to 'src/mame/drivers/m72.cpp')
-rw-r--r--src/mame/drivers/m72.cpp4
1 files changed, 0 insertions, 4 deletions
diff --git a/src/mame/drivers/m72.cpp b/src/mame/drivers/m72.cpp
index 98505de4549..95aec5fba02 100644
--- a/src/mame/drivers/m72.cpp
+++ b/src/mame/drivers/m72.cpp
@@ -197,7 +197,6 @@ other supported games as well.
#include "machine/irem_cpu.h"
#include "machine/rstbuf.h"
#include "sound/ym2151.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
@@ -1825,9 +1824,6 @@ void m72_state::m72_audio_chips(machine_config &config)
ymsnd.add_route(ALL_OUTPUTS, "speaker", 1.0);
DAC_8BIT_R2R(config, "dac", 0).add_route(ALL_OUTPUTS, "speaker", 0.3); // unknown DAC
- voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref", 0));
- vref.add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
- vref.add_route(0, "dac", -1.0, DAC_VREF_NEG_INPUT);
}
void m72_state::m72_base(machine_config &config)