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hvyunit: Generate sound IRQ from YM2203 rather than VBLANK

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This commit is contained in:
AJR 2019-09-05 20:45:06 -04:00
parent 8f28399938
commit f0d16af7c1
1 changed files with 3 additions and 2 deletions
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5
src/mame/drivers/hvyunit.cpp
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@ -635,7 +635,6 @@ void hvyunit_state::hvyunit(machine_config &config)
Z80(config, m_soundcpu, XTAL(12'000'000)/2); /* 6MHz verified on PCB */
m_soundcpu->set_addrmap(AS_PROGRAM, &hvyunit_state::sound_memory);
m_soundcpu->set_addrmap(AS_IO, &hvyunit_state::sound_io);
m_soundcpu->set_vblank_int("screen", FUNC(hvyunit_state::irq0_line_hold));
I80C51(config, m_mermaid, XTAL(12'000'000)/2); /* 6MHz verified on PCB */
m_mermaid->port_in_cb<0>().set(FUNC(hvyunit_state::mermaid_p0_r));
@ -675,7 +674,9 @@ void hvyunit_state::hvyunit(machine_config &config)
GENERIC_LATCH_8(config, m_soundlatch);
m_soundlatch->data_pending_callback().set_inputline(m_soundcpu, INPUT_LINE_NMI);
YM2203(config, "ymsnd", XTAL(12'000'000)/4).add_route(ALL_OUTPUTS, "mono", 0.80); /* 3MHz verified on PCB */
ym2203_device &ymsnd(YM2203(config, "ymsnd", XTAL(12'000'000)/4)); // 3MHz verified on PCB
ymsnd.irq_handler().set_inputline(m_soundcpu, INPUT_LINE_IRQ0);
ymsnd.add_route(ALL_OUTPUTS, "mono", 0.80);
}