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mainsnk: Soundlatch modernization (nw)

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This commit is contained in:
AJR 2017-09-01 15:21:22 -04:00
parent a233dbf1de
commit 5a8f4874ae
2 changed files with 8 additions and 28 deletions
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32
src/mame/drivers/mainsnk.cpp
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@ -118,29 +118,12 @@ cc_p14.j2 8192 0xedc6a1eb M5L2764k
#include "speaker.h"
void mainsnk_state::machine_start()
{
save_item(NAME(m_sound_cpu_busy));
}
WRITE8_MEMBER(mainsnk_state::sound_command_w)
{
m_sound_cpu_busy = 1;
m_soundlatch->write(space, 0, data);
m_audiocpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
}
READ8_MEMBER(mainsnk_state::sound_ack_r)
{
m_sound_cpu_busy = 0;
m_audiocpu->set_input_line(0, CLEAR_LINE);
return 0xff;
}
CUSTOM_INPUT_MEMBER(mainsnk_state::sound_r)
{
return (m_sound_cpu_busy) ? 0x01 : 0x00;
}
static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, mainsnk_state )
@ -152,7 +135,7 @@ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, mainsnk_state )
AM_RANGE(0xc400, 0xc400) AM_READ_PORT("DSW1")
AM_RANGE(0xc500, 0xc500) AM_READ_PORT("DSW2")
AM_RANGE(0xc600, 0xc600) AM_WRITE(c600_w)
AM_RANGE(0xc700, 0xc700) AM_WRITE(sound_command_w)
AM_RANGE(0xc700, 0xc700) AM_DEVWRITE("soundlatch", generic_latch_8_device, write)
AM_RANGE(0xd800, 0xdbff) AM_RAM_WRITE(bgram_w) AM_SHARE("bgram")
AM_RANGE(0xdc00, 0xe7ff) AM_RAM
AM_RANGE(0xe800, 0xefff) AM_RAM AM_SHARE("spriteram")
@ -163,7 +146,7 @@ static ADDRESS_MAP_START( sound_map, AS_PROGRAM, 8, mainsnk_state )
AM_RANGE(0x0000, 0x7fff) AM_ROM
AM_RANGE(0x8000, 0x87ff) AM_RAM
AM_RANGE(0xa000, 0xa000) AM_DEVREAD("soundlatch", generic_latch_8_device, read)
AM_RANGE(0xc000, 0xc000) AM_READ(sound_ack_r)
AM_RANGE(0xc000, 0xc000) AM_DEVREAD("soundlatch", generic_latch_8_device, acknowledge_r)
AM_RANGE(0xe000, 0xe001) AM_DEVWRITE("ay1", ay8910_device, address_data_w)
AM_RANGE(0xe002, 0xe003) AM_WRITENOP // ? always FFFF, snkwave leftover?
AM_RANGE(0xe008, 0xe009) AM_DEVWRITE("ay2", ay8910_device, address_data_w)
@ -171,7 +154,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( sound_portmap, AS_IO, 8, mainsnk_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x00) AM_READNOP
AM_RANGE(0x00, 0x00) AM_READ(sound_ack_r)
ADDRESS_MAP_END
@ -183,7 +166,7 @@ static INPUT_PORTS_START( mainsnk )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_SERVICE1 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, mainsnk_state, sound_r, nullptr) /* sound CPU status */
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_READ_LINE_DEVICE_MEMBER("soundlatch", generic_latch_8_device, pending_r) /* sound CPU status */
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE )
@ -277,7 +260,7 @@ static INPUT_PORTS_START( canvas )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_SERVICE1 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, mainsnk_state, sound_r, nullptr) /* sound CPU status */
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_READ_LINE_DEVICE_MEMBER("soundlatch", generic_latch_8_device, pending_r) /* sound CPU status */
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE )
@ -398,7 +381,7 @@ static MACHINE_CONFIG_START( mainsnk )
MCFG_CPU_ADD("audiocpu", Z80,4000000)
MCFG_CPU_PROGRAM_MAP(sound_map)
MCFG_CPU_IO_MAP(sound_portmap)
MCFG_CPU_PERIODIC_INT_DRIVER(mainsnk_state, irq0_line_hold, 244)
MCFG_CPU_PERIODIC_INT_DRIVER(mainsnk_state, irq0_line_assert, 244)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
@ -416,6 +399,7 @@ static MACHINE_CONFIG_START( mainsnk )
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_GENERIC_LATCH_8_ADD("soundlatch")
MCFG_GENERIC_LATCH_DATA_PENDING_CB(INPUTLINE("audiocpu", INPUT_LINE_NMI))
MCFG_SOUND_ADD("ay1", AY8910, 2000000)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.35)

4
src/mame/includes/mainsnk.h
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@ -32,19 +32,15 @@ public:
int m_sound_cpu_busy;
uint32_t m_bg_tile_offset;
DECLARE_WRITE8_MEMBER(sound_command_w);
DECLARE_READ8_MEMBER(sound_ack_r);
DECLARE_WRITE8_MEMBER(c600_w);
DECLARE_WRITE8_MEMBER(fgram_w);
DECLARE_WRITE8_MEMBER(bgram_w);
DECLARE_CUSTOM_INPUT_MEMBER(sound_r);
TILEMAP_MAPPER_MEMBER(marvins_tx_scan_cols);
TILE_GET_INFO_MEMBER(get_tx_tile_info);
TILE_GET_INFO_MEMBER(get_bg_tile_info);
virtual void machine_start() override;
virtual void video_start() override;
DECLARE_PALETTE_INIT(mainsnk);