diff options
Diffstat (limited to 'src/mame/drivers/4004clk.cpp')
-rw-r--r-- | src/mame/drivers/4004clk.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/4004clk.cpp b/src/mame/drivers/4004clk.cpp index 32a93d14ec8..c363e32bfa3 100644 --- a/src/mame/drivers/4004clk.cpp +++ b/src/mame/drivers/4004clk.cpp @@ -12,6 +12,7 @@ #include "cpu/mcs40/mcs40.h" #include "machine/clock.h" #include "sound/dac.h" +#include "sound/volt_reg.h" #include "speaker.h" #include "4004clk.lh" @@ -138,7 +139,8 @@ static MACHINE_CONFIG_START( 4004clk ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("speaker") MCFG_SOUND_ADD("dac", DAC_1BIT, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.25) - MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_POS_INPUT, 1.0) + 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_CLOCK_ADD("clk", 60) MCFG_CLOCK_SIGNAL_HANDLER(INPUTLINE("maincpu", I4004_TEST_LINE)) |