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bus/cbus/pc9801_26.cpp: approximate better mixing

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This commit is contained in:
angelosa 2024-11-02 12:04:43 +01:00
parent dad2f0c855
commit b993760cf3
1 changed files with 7 additions and 2 deletions
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9
src/devices/bus/cbus/pc9801_26.cpp
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@ -29,7 +29,6 @@ DEFINE_DEVICE_TYPE(PC9801_26, pc9801_26_device, "pc9801_26", "NEC PC-9801-26")
void pc9801_26_device::sound_irq(int state)
{
// TODO: sometimes misfired irq causes sound or even host hang
m_bus->int_w<5>(state);
}
@ -47,7 +46,13 @@ void pc9801_26_device::device_add_mconfig(machine_config &config)
//m_opn->port_b_read_callback().set(FUNC(pc8801_state::opn_portb_r));
//m_opn->port_a_write_callback().set(FUNC(pc8801_state::opn_porta_w));
m_opn->port_b_write_callback().set(FUNC(pc9801_26_device::opn_portb_w));
m_opn->add_route(ALL_OUTPUTS, "mono", 1.00);
// TODO: verify mixing on HW
// emerald stage 1 BGM uses ch. 3 for bassline, which sounds way more prominent
// than the others combined (0.25 1/4 ratio even?)
m_opn->add_route(0, "mono", 0.50);
m_opn->add_route(1, "mono", 0.50);
m_opn->add_route(2, "mono", 0.50);
m_opn->add_route(3, "mono", 1.00);
}
// to load a different bios for slots: