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Diffstat (limited to 'src/mame/drivers/bombjack.cpp')
-rw-r--r--src/mame/drivers/bombjack.cpp16
1 files changed, 10 insertions, 6 deletions
diff --git a/src/mame/drivers/bombjack.cpp b/src/mame/drivers/bombjack.cpp
index fd188f131ad..6b3485bf4a1 100644
--- a/src/mame/drivers/bombjack.cpp
+++ b/src/mame/drivers/bombjack.cpp
@@ -125,7 +125,9 @@ READ8_MEMBER(bombjack_state::soundlatch_read_and_clear)
WRITE8_MEMBER(bombjack_state::irq_mask_w)
{
- m_nmi_mask = data & 1;
+ m_nmi_mask = BIT(data, 0);
+ if (!m_nmi_mask)
+ m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
}
void bombjack_state::main_map(address_map &map)
@@ -330,19 +332,21 @@ GFXDECODE_END
void bombjack_state::machine_start()
{
save_item(NAME(m_background_image));
+ save_item(NAME(m_nmi_mask));
}
void bombjack_state::machine_reset()
{
m_background_image = 0;
+ m_nmi_mask = false;
}
-INTERRUPT_GEN_MEMBER(bombjack_state::vblank_irq)
+WRITE_LINE_MEMBER(bombjack_state::vblank_irq)
{
- if(m_nmi_mask)
- device.execute().set_input_line(INPUT_LINE_NMI, PULSE_LINE);
+ if (state && m_nmi_mask)
+ m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
}
MACHINE_CONFIG_START(bombjack_state::bombjack)
@@ -350,12 +354,10 @@ MACHINE_CONFIG_START(bombjack_state::bombjack)
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z80, XTAL(4'000'000)) /* Confirmed from PCB */
MCFG_CPU_PROGRAM_MAP(main_map)
- MCFG_CPU_VBLANK_INT_DRIVER("screen", bombjack_state, vblank_irq)
MCFG_CPU_ADD("audiocpu", Z80, XTAL(12'000'000)/4) /* Confirmed from PCB */
MCFG_CPU_PROGRAM_MAP(audio_map)
MCFG_CPU_IO_MAP(audio_io_map)
- MCFG_CPU_VBLANK_INT_DRIVER("screen", bombjack_state, nmi_line_pulse)
MCFG_GENERIC_LATCH_8_ADD("soundlatch")
@@ -367,6 +369,8 @@ MACHINE_CONFIG_START(bombjack_state::bombjack)
MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
MCFG_SCREEN_UPDATE_DRIVER(bombjack_state, screen_update_bombjack)
MCFG_SCREEN_PALETTE("palette")
+ MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(bombjack_state, vblank_irq))
+ MCFG_DEVCB_CHAIN_OUTPUT(INPUTLINE("audiocpu", INPUT_LINE_NMI))
MCFG_GFXDECODE_ADD("gfxdecode", "palette", bombjack)
MCFG_PALETTE_ADD("palette", 128)