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-rw-r--r--src/mame/drivers/ladyfrog.cpp8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mame/drivers/ladyfrog.cpp b/src/mame/drivers/ladyfrog.cpp
index fd79cf25778..f90b72446b3 100644
--- a/src/mame/drivers/ladyfrog.cpp
+++ b/src/mame/drivers/ladyfrog.cpp
@@ -53,6 +53,8 @@ Notes:
#include "cpu/z80/z80.h"
#include "sound/ay8910.h"
+#include "sound/dac.h"
+#include "sound/volt_reg.h"
#include "screen.h"
#include "speaker.h"
@@ -145,7 +147,7 @@ static ADDRESS_MAP_START( ladyfrog_sound_map, AS_PROGRAM, 8, ladyfrog_state )
AM_RANGE(0xd000, 0xd000) AM_DEVREAD("soundlatch", generic_latch_8_device, read) AM_WRITE(to_main_w)
AM_RANGE(0xd200, 0xd200) AM_READNOP AM_WRITE(nmi_enable_w)
AM_RANGE(0xd400, 0xd400) AM_WRITE(nmi_disable_w)
- AM_RANGE(0xd600, 0xd600) AM_WRITENOP
+ AM_RANGE(0xd600, 0xd600) AM_READNOP AM_DEVWRITE("dac", dac_byte_interface, write) /* signed 8-bit DAC - unknown read */
AM_RANGE(0xe000, 0xefff) AM_NOP
ADDRESS_MAP_END
@@ -331,6 +333,10 @@ static MACHINE_CONFIG_START( ladyfrog )
// pin 1 SOLO 8' not mapped
// pin 2 SOLO 16' not mapped
// pin 22 Noise Output not mapped
+
+ MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) // 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)
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( toucheme, ladyfrog )