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lkage: Soundlatch modernization (nw)

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This commit is contained in:
AJR 2017-09-01 00:43:51 -04:00
parent a6682d49f1
commit 4f331f8e63
2 changed files with 16 additions and 34 deletions
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39
src/mame/drivers/lkage.cpp
View File

@ -101,34 +101,14 @@ TODO:
#define MCU_CLOCK (XTAL_12MHz/4)
TIMER_CALLBACK_MEMBER(lkage_state::nmi_callback)
{
if (m_sound_nmi_enable)
m_audiocpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
else
m_pending_nmi = 1;
}
WRITE8_MEMBER(lkage_state::lkage_sound_command_w)
{
m_soundlatch->write(space, offset, data);
machine().scheduler().synchronize(timer_expired_delegate(FUNC(lkage_state::nmi_callback),this), data);
}
WRITE8_MEMBER(lkage_state::lkage_sh_nmi_disable_w)
{
m_sound_nmi_enable = 0;
m_soundnmi->in_w<1>(0);
}
WRITE8_MEMBER(lkage_state::lkage_sh_nmi_enable_w)
{
m_sound_nmi_enable = 1;
if (m_pending_nmi)
{
/* probably wrong but commands may go lost otherwise */
m_audiocpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
m_pending_nmi = 0;
}
m_soundnmi->in_w<1>(1);
}
READ8_MEMBER(lkage_state::sound_status_r)
@ -141,7 +121,7 @@ static ADDRESS_MAP_START( lkage_map, AS_PROGRAM, 8, lkage_state )
AM_RANGE(0xe000, 0xe7ff) AM_RAM /* work ram */
AM_RANGE(0xe800, 0xefff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
AM_RANGE(0xf000, 0xf003) AM_RAM AM_SHARE("vreg") /* video registers */
AM_RANGE(0xf060, 0xf060) AM_WRITE(lkage_sound_command_w)
AM_RANGE(0xf060, 0xf060) AM_DEVWRITE("soundlatch", generic_latch_8_device, write)
AM_RANGE(0xf061, 0xf061) AM_WRITENOP AM_READ(sound_status_r)
AM_RANGE(0xf063, 0xf063) AM_WRITENOP /* pulsed; nmi on sound cpu? */
AM_RANGE(0xf080, 0xf080) AM_READ_PORT("DSW1")
@ -490,8 +470,6 @@ void lkage_state::machine_start()
save_item(NAME(m_mcu_ready));
save_item(NAME(m_mcu_val));
save_item(NAME(m_sound_nmi_enable));
save_item(NAME(m_pending_nmi));
}
void lkage_state::machine_reset()
@ -500,9 +478,8 @@ void lkage_state::machine_reset()
m_mcu_ready = 3;
m_mcu_val = 0;
m_sound_nmi_enable = 0;
m_pending_nmi = 0;
m_soundnmi->in_w<1>(0);
}
static MACHINE_CONFIG_START( lkage )
@ -538,6 +515,10 @@ static MACHINE_CONFIG_START( lkage )
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_GENERIC_LATCH_8_ADD("soundlatch")
MCFG_GENERIC_LATCH_DATA_PENDING_CB(DEVWRITELINE("soundnmi", input_merger_device, in_w<0>))
MCFG_INPUT_MERGER_ALL_HIGH("soundnmi")
MCFG_INPUT_MERGER_OUTPUT_HANDLER(INPUTLINE("audiocpu", INPUT_LINE_NMI))
MCFG_SOUND_ADD("ym1", YM2203, AUDIO_CLOCK )
MCFG_YM2203_IRQ_HANDLER(INPUTLINE("audiocpu", 0))
@ -585,6 +566,10 @@ static MACHINE_CONFIG_START( lkageb )
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_GENERIC_LATCH_8_ADD("soundlatch")
MCFG_GENERIC_LATCH_DATA_PENDING_CB(DEVWRITELINE("soundnmi", input_merger_device, in_w<0>))
MCFG_INPUT_MERGER_ALL_HIGH("soundnmi")
MCFG_INPUT_MERGER_OUTPUT_HANDLER(INPUTLINE("audiocpu", INPUT_LINE_NMI))
MCFG_SOUND_ADD("ym1", YM2203, AUDIO_CLOCK)
MCFG_YM2203_IRQ_HANDLER(INPUTLINE("audiocpu", 0))

11
src/mame/includes/lkage.h
View File

@ -2,6 +2,7 @@
// copyright-holders:Phil Stroffolino
#include "machine/gen_latch.h"
#include "machine/input_merger.h"
#include "machine/taito68705interface.h"
class lkage_state : public driver_device
@ -18,7 +19,8 @@ public:
m_bmcu(*this, "bmcu"),
m_gfxdecode(*this, "gfxdecode"),
m_palette(*this, "palette"),
m_soundlatch(*this, "soundlatch") { }
m_soundlatch(*this, "soundlatch"),
m_soundnmi(*this, "soundnmi") { }
required_shared_ptr<uint8_t> m_vreg;
required_shared_ptr<uint8_t> m_scroll;
@ -35,10 +37,6 @@ public:
int m_sprite_dx;
/* misc */
int m_sound_nmi_enable;
int m_pending_nmi;
/* lkageb fake mcu */
uint8_t m_mcu_val;
int m_mcu_ready; /* cpu data/mcu ready status */
@ -50,8 +48,8 @@ public:
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
required_device<generic_latch_8_device> m_soundlatch;
required_device<input_merger_device> m_soundnmi;
DECLARE_WRITE8_MEMBER(lkage_sound_command_w);
DECLARE_WRITE8_MEMBER(lkage_sh_nmi_disable_w);
DECLARE_WRITE8_MEMBER(lkage_sh_nmi_enable_w);
DECLARE_READ8_MEMBER(sound_status_r);
@ -71,6 +69,5 @@ public:
virtual void machine_reset() override;
virtual void video_start() override;
uint32_t screen_update_lkage(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
TIMER_CALLBACK_MEMBER(nmi_callback);
void draw_sprites( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect );
};