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twin16.cpp: Correct polarity of uPD7759 ST line writes

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This commit is contained in:
AJR 2023-05-07 18:28:02 -04:00
parent 63117eb131
commit 8dbba0b525
1 changed files with 5 additions and 2 deletions
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7
src/mame/konami/twin16.cpp
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@ -150,12 +150,12 @@ uint8_t twin16_state::upd_busy_r()
void twin16_state::upd_reset_w(uint8_t data)
{
m_upd7759->reset_w(data & 2);
m_upd7759->reset_w(BIT(data, 1));
}
void twin16_state::upd_start_w(uint8_t data)
{
m_upd7759->start_w(data & 1);
m_upd7759->start_w(!BIT(data, 0));
}
/* Memory Maps */
@ -634,6 +634,9 @@ void twin16_state::machine_reset()
{
m_CPUA_register = 0;
m_CPUB_register = 0;
m_upd7759->reset_w(0);
m_upd7759->start_w(1);
}
void twin16_state::machine_start()