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author AJR <ajrhacker@users.noreply.github.com>2017-07-04 23:14:15 -0400
committer AJR <ajrhacker@users.noreply.github.com>2018-01-10 02:11:14 -0500
commit1c6a7ab40ccd23b753777204c7a289e830b2adcb (patch)
treecef6154209fde4d65ecf098aea12b3093182573a /src/mame/drivers/equites.cpp
parent9ee066992dd0126b7ed7450d664bf055d527ab64 (diff)
New way to provide DAC reference inputs (nw)
- Introduce MCFG_SOUND_REFERENCE_INPUT to provide fixed inputs through the resampler, eliminating the need for the "voltage regulator" device - Replace memset use in sound.cpp with std::fill This was my third implementation of this concept. The previous two involved attaching sound streams to the dummy device (which required giving it device_sound_interface and other modifications).
Diffstat (limited to 'src/mame/drivers/equites.cpp')
-rw-r--r--src/mame/drivers/equites.cpp6
1 files changed, 2 insertions, 4 deletions
diff --git a/src/mame/drivers/equites.cpp b/src/mame/drivers/equites.cpp
index d10fbe2b4c6..35e2c922ba6 100644
--- a/src/mame/drivers/equites.cpp
+++ b/src/mame/drivers/equites.cpp
@@ -369,7 +369,6 @@ D
#include "machine/nvram.h"
#include "machine/watchdog.h"
#include "sound/ay8910.h"
-#include "sound/volt_reg.h"
#include "speaker.h"
#define FRQ_ADJUSTER_TAG "FRQ"
@@ -1067,10 +1066,9 @@ static MACHINE_CONFIG_START( common_sound )
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.15)
MCFG_SOUND_ADD("dac1", DAC_6BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5) // unknown DAC
+ MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_POS_INPUT, 1.0) MCFG_SOUND_REFERENCE_INPUT(DAC_VREF_NEG_INPUT, -1.0)
MCFG_SOUND_ADD("dac2", DAC_6BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5) // unknown DAC
- MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
- MCFG_SOUND_ROUTE_EX(0, "dac1", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "dac1", -1.0, DAC_VREF_NEG_INPUT)
- MCFG_SOUND_ROUTE_EX(0, "dac2", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "dac2", -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("samples", SAMPLES, 0)
MCFG_SAMPLES_CHANNELS(3)