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Diffstat (limited to 'src/mame/drivers/4004clk.cpp')
-rw-r--r--src/mame/drivers/4004clk.cpp3
1 files changed, 0 insertions, 3 deletions
diff --git a/src/mame/drivers/4004clk.cpp b/src/mame/drivers/4004clk.cpp
index 6190be43acd..08f7610c997 100644
--- a/src/mame/drivers/4004clk.cpp
+++ b/src/mame/drivers/4004clk.cpp
@@ -12,7 +12,6 @@
#include "cpu/mcs40/mcs40.h"
#include "machine/clock.h"
#include "sound/dac.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
#include "4004clk.lh"
@@ -151,8 +150,6 @@ void nixieclock_state::_4004clk(machine_config &config)
/* sound hardware */
SPEAKER(config, "speaker").front_center();
DAC_1BIT(config, "dac", 0).add_route(ALL_OUTPUTS, "speaker", 0.25);
- voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref", 0));
- vref.add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
clock_device &clk(CLOCK(config, "clk", 60));
clk.signal_handler().set_inputline("maincpu", I4004_TEST_LINE);