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-rw-r--r--src/mame/drivers/mappy.cpp1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/mame/drivers/mappy.cpp b/src/mame/drivers/mappy.cpp
index ee7d094cbb3..f41d55efb89 100644
--- a/src/mame/drivers/mappy.cpp
+++ b/src/mame/drivers/mappy.cpp
@@ -1417,7 +1417,6 @@ void mappy_state::grobda(machine_config &config)
/* sound hardware */
DAC_4BIT_BINARY_WEIGHTED(config, "dac", 0).add_route(ALL_OUTPUTS, "speaker", 0.275); // alternate route to 15XX-related DAC?
voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref", 0));
- vref.set_output(5.0);
vref.add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
vref.add_route(0, "dac", -1.0, DAC_VREF_NEG_INPUT);
}