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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/kingobox.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/kingobox.cpp')
-rw-r--r--src/mame/drivers/kingobox.cpp7
1 files changed, 2 insertions, 5 deletions
diff --git a/src/mame/drivers/kingobox.cpp b/src/mame/drivers/kingobox.cpp
index f6f117c04c9..e874a50c2db 100644
--- a/src/mame/drivers/kingobox.cpp
+++ b/src/mame/drivers/kingobox.cpp
@@ -24,7 +24,6 @@ Main CPU:
#include "machine/clock.h"
#include "sound/ay8910.h"
#include "sound/dac.h"
-#include "sound/volt_reg.h"
#include "screen.h"
#include "speaker.h"
@@ -506,8 +505,7 @@ static MACHINE_CONFIG_START( kingofb )
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.25)
MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.125) // 100K (R30-44 even)/200K (R31-45 odd) ladder network
- 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)
MACHINE_CONFIG_END
@@ -565,8 +563,7 @@ static MACHINE_CONFIG_START( ringking )
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.25)
MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.125) // unknown DAC
- 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)
MACHINE_CONFIG_END