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lwriter.cpp: Invert the state of the SCC interrupt (#8389)

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Jeff Muizelaar 2021-08-01 20:35:38 -04:00 committed by GitHub
parent 385dd90d86
commit 84c1252ab9
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1 changed files with 3 additions and 1 deletions
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src/mame/drivers/lwriter.cpp
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@ -535,7 +535,9 @@ void lwriter_state::lwriter(machine_config &config)
m_scc->out_dtrb_callback().set(FUNC(lwriter_state::write_dtr));
m_scc->out_rtsb_callback().set("rs232b", FUNC(rs232_port_device::write_rts));
/* Interrupt */
m_scc->out_int_callback().set(m_via, FUNC(via6522_device::write_ca1));
// The "CA1 Latch/Interrupt Control" bit in VIA PCR gets set to "negative
// active edge" so we invert the SCC interrupt.
m_scc->out_int_callback().set(m_via, FUNC(via6522_device::write_ca1)).invert();
//m_scc->out_int_callback().set(FUNC(lwriter_state::scc_int));
rs232_port_device &rs232a(RS232_PORT(config, "rs232a", default_rs232_devices, "terminal"));