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author | hap <happppp@users.noreply.github.com> | 2020-01-24 15:55:11 +0100 |
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committer | hap <happppp@users.noreply.github.com> | 2020-01-24 15:55:24 +0100 |
commit | 659e410ec6674cd53b7e2bfe7fc85e8c005dbd18 (patch) | |
tree | 8e4910d6f62d6f5ac951eed2557cbd5d34ba6c38 /src/mame/drivers/fidel_as12.cpp | |
parent | b2c486b0c2530425eb14d3012c4403d5251559cf (diff) |
New working clones
------------------
Excel 68000 Mach IV 68020 Master 2325 [hap, Berger]
Diffstat (limited to 'src/mame/drivers/fidel_as12.cpp')
-rw-r--r-- | src/mame/drivers/fidel_as12.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/fidel_as12.cpp b/src/mame/drivers/fidel_as12.cpp index 5a578a71144..1e4cd37ee7e 100644 --- a/src/mame/drivers/fidel_as12.cpp +++ b/src/mame/drivers/fidel_as12.cpp @@ -215,7 +215,7 @@ void as12_state::as12(machine_config &config) m_maincpu->set_addrmap(AS_PROGRAM, &as12_state::div_trampoline); ADDRESS_MAP_BANK(config, m_mainmap).set_map(&as12_state::main_map).set_options(ENDIANNESS_LITTLE, 8, 16); - const attotime irq_period = attotime::from_hz(585); // from 556 timer (22nF, 110K, 1K) + const attotime irq_period = attotime::from_hz(600); // from 556 timer (22nF, 110K, 1K), ideal frequency is 600Hz TIMER(config, m_irq_on).configure_periodic(FUNC(as12_state::irq_on<M6502_IRQ_LINE>), irq_period); m_irq_on->set_start_delay(irq_period - attotime::from_nsec(15250)); // active for 15.25us TIMER(config, "irq_off").configure_periodic(FUNC(as12_state::irq_off<M6502_IRQ_LINE>), irq_period); |