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author AJR <ajrhacker@users.noreply.github.com>2017-08-14 22:18:31 -0400
committer AJR <ajrhacker@users.noreply.github.com>2017-08-14 22:18:31 -0400
commite1954ba204fa82db4b46e475fce7ca016c881309 (patch)
tree17e58bb38d9ed843c2ea0a0c46123e57c859039b /src/mame/drivers/kingobox.cpp
parent43454c3c9adb6f7d2cb12c0b633b077d9c77744b (diff)
kingobox: DAC identification (nw)
Diffstat (limited to 'src/mame/drivers/kingobox.cpp')
-rw-r--r--src/mame/drivers/kingobox.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/kingobox.cpp b/src/mame/drivers/kingobox.cpp
index 294a86f435f..fbd8ac33a2e 100644
--- a/src/mame/drivers/kingobox.cpp
+++ b/src/mame/drivers/kingobox.cpp
@@ -507,7 +507,7 @@ static MACHINE_CONFIG_START( kingofb )
MCFG_AY8910_PORT_A_READ_CB(DEVREAD8("soundlatch", generic_latch_8_device, read))
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_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)
MACHINE_CONFIG_END