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crimfght: audio cpu irq is cleared by the irq ack cycle

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This commit is contained in:
Dirk Best 2015-08-14 19:04:38 +02:00
parent b9877c12ec
commit 32fd6a0342
2 changed files with 6 additions and 5 deletions
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9
src/mame/drivers/crimfght.c
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@ -65,11 +65,11 @@ WRITE8_MEMBER(crimfght_state::sound_w)
m_audiocpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE);
}
READ8_MEMBER( crimfght_state::datain_r )
IRQ_CALLBACK_MEMBER( crimfght_state::audiocpu_irq_ack )
{
// reading the latch clears the irq
// irq ack cycle clears irq via flip-flop u86
m_audiocpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE);
return soundlatch_read(0);
return 0xff;
}
WRITE8_MEMBER(crimfght_state::ym2151_ct_w)
@ -112,7 +112,7 @@ static ADDRESS_MAP_START( crimfght_sound_map, AS_PROGRAM, 8, crimfght_state )
AM_RANGE(0x0000, 0x7fff) AM_ROM
AM_RANGE(0x8000, 0x87ff) AM_MIRROR(0x1800) AM_RAM
AM_RANGE(0xa000, 0xa001) AM_MIRROR(0x1ffe) AM_DEVREADWRITE("ymsnd", ym2151_device, read, write)
AM_RANGE(0xc000, 0xc000) AM_MIRROR(0x1fff) AM_READ(datain_r)
AM_RANGE(0xc000, 0xc000) AM_MIRROR(0x1fff) AM_READ(soundlatch_byte_r)
AM_RANGE(0xe000, 0xe00f) AM_MIRROR(0x1ff0) AM_DEVREADWRITE("k007232", k007232_device, read, write)
ADDRESS_MAP_END
@ -296,6 +296,7 @@ static MACHINE_CONFIG_START( crimfght, crimfght_state )
MCFG_CPU_ADD("audiocpu", Z80, XTAL_3_579545MHz) /* verified on pcb */
MCFG_CPU_PROGRAM_MAP(crimfght_sound_map)
MCFG_CPU_IRQ_ACKNOWLEDGE_DEVICE(DEVICE_SELF, crimfght_state, audiocpu_irq_ack)
MCFG_DEVICE_ADD("bank0000", ADDRESS_MAP_BANK, 0)
MCFG_DEVICE_PROGRAM_MAP(bank0000_map)

2
src/mame/includes/crimfght.h
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@ -38,7 +38,7 @@ public:
DECLARE_WRITE8_MEMBER(sound_w);
DECLARE_READ8_MEMBER(k052109_051960_r);
DECLARE_WRITE8_MEMBER(k052109_051960_w);
DECLARE_READ8_MEMBER(datain_r);
IRQ_CALLBACK_MEMBER(audiocpu_irq_ack);
DECLARE_WRITE8_MEMBER(ym2151_ct_w);
virtual void machine_start();
UINT32 screen_update_crimfght(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);