diff options
Diffstat (limited to 'src/mame/drivers/bombjack.cpp')
-rw-r--r-- | src/mame/drivers/bombjack.cpp | 16 |
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) |