Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-06 04:43:45 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

fdes2265: wrong interrupt pin (nw)

Browse Source
This commit is contained in:
hap 2020-01-24 16:05:12 +01:00
parent 659e410ec6
commit 9dfa4c9ca3
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/mame/drivers/fidel_desdis.cpp
View File

@ -333,7 +333,10 @@ void desmas_state::fdes2265(machine_config &config)
M68000(config.replace(), m_maincpu, 16_MHz_XTAL); // MC68HC000P12F
m_maincpu->set_addrmap(AS_PROGRAM, &desmas_state::fdes2265_map);
m_irq_on->set_start_delay(attotime::from_hz(600) - attotime::from_usec(6)); // irq active for 6us
const attotime irq_period = attotime::from_hz(600); // from 555 timer, ideal frequency is 600Hz (measured 597Hz)
TIMER(config.replace(), m_irq_on).configure_periodic(FUNC(desmas_state::irq_on<M68K_IRQ_4>), irq_period);
m_irq_on->set_start_delay(irq_period - attotime::from_usec(6)); // active for 6us
TIMER(config.replace(), "irq_off").configure_periodic(FUNC(desmas_state::irq_off<M68K_IRQ_4>), irq_period);
config.set_default_layout(layout_fidel_desdis_68kr);
}