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Diffstat (limited to 'src/mame/audio/s11c_bg.cpp')
-rw-r--r--src/mame/audio/s11c_bg.cpp4
1 files changed, 1 insertions, 3 deletions
diff --git a/src/mame/audio/s11c_bg.cpp b/src/mame/audio/s11c_bg.cpp
index fb80c7ad1f0..05f7f52948f 100644
--- a/src/mame/audio/s11c_bg.cpp
+++ b/src/mame/audio/s11c_bg.cpp
@@ -10,7 +10,6 @@
#include "emu.h"
#include "s11c_bg.h"
#include "sound/dac.h"
-#include "sound/volt_reg.h"
DEFINE_DEVICE_TYPE(S11C_BG, s11c_bg_device, "s11c_bg", "Williams System 11C Background Music")
@@ -66,8 +65,7 @@ MACHINE_CONFIG_MEMBER( s11c_bg_device::device_add_mconfig )
MCFG_SOUND_ROUTE(ALL_OUTPUTS, DEVICE_SELF_OWNER, 0.25)
MCFG_SOUND_ADD("dac", MC1408, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, DEVICE_SELF_OWNER, 0.25)
- MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
- MCFG_SOUND_ROUTE_EX(0, "dac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
+ MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_POS_INPUT, 1.0) MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_NEG_INPUT, -1.0)
MCFG_SOUND_ADD("hc55516_bg", HC55516, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, DEVICE_SELF_OWNER, 0.5)