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Diffstat (limited to 'src/devices/bus/isa/p1_sound.cpp')
-rw-r--r--src/devices/bus/isa/p1_sound.cpp4
1 files changed, 0 insertions, 4 deletions
diff --git a/src/devices/bus/isa/p1_sound.cpp b/src/devices/bus/isa/p1_sound.cpp
index 0a6c04bc04f..2c0700d6282 100644
--- a/src/devices/bus/isa/p1_sound.cpp
+++ b/src/devices/bus/isa/p1_sound.cpp
@@ -14,7 +14,6 @@
#include "emu.h"
#include "p1_sound.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
@@ -67,9 +66,6 @@ void p1_sound_device::device_add_mconfig(machine_config &config)
SPEAKER(config, "speaker").front_center();
FILTER_RC(config, m_filter).add_route(ALL_OUTPUTS, "speaker", 1.0);
DAC_8BIT_R2R(config, m_dac, 0).add_route(ALL_OUTPUTS, "filter", 0.5); // 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);
}