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author smf- <smf-@users.noreply.github.com>2016-10-17 16:03:29 +0100
committer smf- <smf-@users.noreply.github.com>2016-10-17 16:04:02 +0100
commit36944269bd6fe1fb47822a2112c524b13c4b27f2 (patch)
treec1b29a760bb9a1e222a9390fbc34fe09d407ae91 /src/mame/drivers/shangkid.cpp
parent8676fc0d8dd0c3ccf2925075d86338da099ce148 (diff)
DAC WIP, started documenting the DACs in use. [smf]
ataxx: Fixed missing sound channel caused by one dac not being hooked up and one dac being hooked up to two addresses. bestbest: Fixed high pitch screech caused by incorrect addressing (two dacs weren't hooked up and two were hooked up to two addresses). cchasm: Fixed static noise generation caused by feeding the same bit to both dacs. cheekyms: Slightly improved sound by implementing sound triggers as 8 x 1 bit dacs instead of 1 x 8 bit dac. galeb: Fixed sound by implementing it according to http://www.deltasoft.com.hr/retro/galebemu.htm & implemented enough of LOAD/SAVE to stop it hanging. hard drivin: (all games in driver) Improved 12 bit controls, although centre still goes out of sync. mea8000: Converted to a sound device. megaphx: Fixed noisy samples due to wrong format. microvsn: Fixed sound pitch caused by incorrect usage of write_signed8(). seicross: Changed to a 4 bit dac as samples are packed nibble. spaceg: Preliminary sound using space invaders samples. suna8: Changed to a 4 bit dac as samples are packed nibble. vcombat: Fixed static during machine gun fire due to incorrect dc offset removal. vectrex: Fixed noisy samples due to wrong format. wheelfir: Fixed sound, eeprom & analogue steering wheel and brake pedal.
Diffstat (limited to 'src/mame/drivers/shangkid.cpp')
-rw-r--r--src/mame/drivers/shangkid.cpp18
1 files changed, 10 insertions, 8 deletions
diff --git a/src/mame/drivers/shangkid.cpp b/src/mame/drivers/shangkid.cpp
index 8bb8482aee4..1a5adeee78b 100644
--- a/src/mame/drivers/shangkid.cpp
+++ b/src/mame/drivers/shangkid.cpp
@@ -51,10 +51,11 @@ Games by Nihon Game/Culture Brain:
*/
#include "emu.h"
+#include "includes/shangkid.h"
#include "cpu/z80/z80.h"
#include "sound/ay8910.h"
#include "sound/dac.h"
-#include "includes/shangkid.h"
+#include "sound/volt_reg.h"
/***************************************************************************************/
@@ -339,7 +340,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( sound_portmap, AS_IO, 8, shangkid_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
- AM_RANGE(0x00, 0x00) AM_READ(soundlatch_r) AM_DEVWRITE("dac", dac_device, write_unsigned8)
+ AM_RANGE(0x00, 0x00) AM_READ(soundlatch_r) AM_DEVWRITE("dac", dac_byte_interface, write)
ADDRESS_MAP_END
/***************************************************************************************/
@@ -378,15 +379,16 @@ static MACHINE_CONFIG_START( chinhero, shangkid_state )
MCFG_VIDEO_START_OVERRIDE(shangkid_state,shangkid)
/* sound hardware */
- MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SPEAKER_STANDARD_MONO("speaker")
- MCFG_DAC_ADD("dac")
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+ MCFG_SOUND_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 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)
MCFG_SOUND_ADD("aysnd", AY8910, XTAL_18_432MHz/12) /* verified on pcb */
MCFG_AY8910_PORT_A_WRITE_CB(WRITE8(shangkid_state, chinhero_ay8910_porta_w))
MCFG_AY8910_PORT_B_WRITE_CB(WRITE8(shangkid_state, ay8910_portb_w))
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.10)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.1)
MACHINE_CONFIG_END
@@ -459,10 +461,10 @@ static MACHINE_CONFIG_START( dynamski, shangkid_state )
MCFG_PALETTE_INIT_OWNER(shangkid_state,dynamski)
/* sound hardware */
- MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SPEAKER_STANDARD_MONO("speaker")
MCFG_SOUND_ADD("aysnd", AY8910, 2000000)
- MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.10)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.1)
MACHINE_CONFIG_END
/***************************************************************************************/