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gen_latch: add boost interleave conf setting

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This commit is contained in:
hap 2022-08-31 00:50:02 +02:00
parent f6942dd17a
commit 229ea4b3a1
7 changed files with 14 additions and 6 deletions
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6
src/devices/machine/gen_latch.cpp
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@ -35,6 +35,7 @@ generic_latch_base_device::generic_latch_base_device(const machine_config &mconf
device_t(mconfig, type, tag, owner, clock),
m_separate_acknowledge(false),
m_latch_written(false),
m_boost_after_write(attotime::zero),
m_data_pending_cb(*this)
{
}
@ -91,6 +92,11 @@ void generic_latch_base_device::set_latch_written(bool latch_written)
{
m_latch_written = latch_written;
m_data_pending_cb(latch_written ? 1 : 0);
// MAME can't time travel in case of tight back and forth comms.
// Instead of adding perfect quantum, boosting interleave may work around it.
if (latch_written && !m_boost_after_write.is_zero())
machine().scheduler().boost_interleave(attotime::zero, m_boost_after_write);
}
}

2
src/devices/machine/gen_latch.h
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@ -33,6 +33,7 @@ public:
// configuration
auto data_pending_callback() { return m_data_pending_cb.bind(); }
void set_separate_acknowledge(bool ack) { m_separate_acknowledge = ack; }
void boost_after_write(attotime duration) { m_boost_after_write = duration; }
DECLARE_READ_LINE_MEMBER(pending_r);
@ -55,6 +56,7 @@ private:
bool m_separate_acknowledge;
bool m_latch_written;
attotime m_boost_after_write;
devcb_write_line m_data_pending_cb;
};

2
src/emu/gamedrv.h
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@ -208,7 +208,7 @@ driver_device_creator< \
///
/// Use this macro to define most systems intended for public use,
/// including arcade games, gambling machines, vending machines, and
/// information kiosks. Muse be used in the global namespace.
/// information kiosks. Must be used in the global namespace.
///
/// Creates an appropriately named and populated #game_driver structure
/// describing the system.

2
src/mame/atari/atarisy1.cpp
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@ -778,7 +778,7 @@ void atarisy1_state::atarisy1(machine_config &config)
GENERIC_LATCH_8(config, m_soundlatch);
m_soundlatch->data_pending_callback().set_inputline(m_audiocpu, m6502_device::NMI_LINE);
m_soundlatch->data_pending_callback().append([this](int state) { if (state) machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(100)); });
m_soundlatch->boost_after_write(attotime::from_usec(100));
GENERIC_LATCH_8(config, m_mainlatch);
m_mainlatch->data_pending_callback().set_inputline(m_maincpu, M68K_IRQ_6);

2
src/mame/atari/atarisy2.cpp
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@ -1259,7 +1259,7 @@ void atarisy2_state::atarisy2(machine_config &config)
GENERIC_LATCH_8(config, m_soundlatch);
m_soundlatch->data_pending_callback().set_inputline(m_audiocpu, m6502_device::NMI_LINE);
m_soundlatch->data_pending_callback().append([this](int state) { if (state) machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(200)); });
m_soundlatch->boost_after_write(attotime::from_usec(200)); // apb3 fails the self-test with a 100 µs delay or less
GENERIC_LATCH_8(config, m_mainlatch);

2
src/mame/atari/gauntlet.cpp
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@ -507,7 +507,7 @@ void gauntlet_state::gauntlet_base(machine_config &config)
GENERIC_LATCH_8(config, m_soundlatch);
m_soundlatch->data_pending_callback().set_inputline(m_audiocpu, m6502_device::NMI_LINE);
m_soundlatch->data_pending_callback().append([this](int state) { if (state) machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(100)); });
m_soundlatch->boost_after_write(attotime::from_usec(100));
GENERIC_LATCH_8(config, m_mainlatch);
m_mainlatch->data_pending_callback().set_inputline(m_maincpu, M68K_IRQ_6);

4
src/mame/atari/starwars.cpp
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@ -315,11 +315,11 @@ void starwars_state::starwars(machine_config &config)
GENERIC_LATCH_8(config, m_soundlatch);
m_soundlatch->data_pending_callback().set(m_riot, FUNC(riot6532_device::pa7_w));
m_soundlatch->data_pending_callback().append([this](int state) { if (state) machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(100)); });
m_soundlatch->boost_after_write(attotime::from_usec(100));
GENERIC_LATCH_8(config, m_mainlatch);
m_mainlatch->data_pending_callback().set(m_riot, FUNC(riot6532_device::pa6_w));
m_mainlatch->data_pending_callback().append([this](int state) { if (state) machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(100)); });
m_mainlatch->boost_after_write(attotime::from_usec(100));
}