diff options
| author | 2024-03-19 01:26:23 +0100 | |
|---|---|---|
| committer | 2024-03-19 01:26:35 +0100 | |
| commit | c545ac9eb6407348fe28f2cc3f70d07dcece915c (patch) | |
| tree | 16cdba3f563d1b972a4ef6fb84eb281ce38e79dd /src/devices/cpu/h8/h8_timer8.cpp | |
| parent | 3b7969802f84e98d53456403931d94338962b007 (diff) | |
h8_timer: compare match event was off by 1
Diffstat (limited to 'src/devices/cpu/h8/h8_timer8.cpp')
| -rw-r--r-- | src/devices/cpu/h8/h8_timer8.cpp | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/src/devices/cpu/h8/h8_timer8.cpp b/src/devices/cpu/h8/h8_timer8.cpp index f96a7c8b938..16f0ee757a1 100644 --- a/src/devices/cpu/h8/h8_timer8.cpp +++ b/src/devices/cpu/h8/h8_timer8.cpp @@ -265,10 +265,9 @@ void h8_timer8_channel_device::update_counter(u64 cur_time, u64 delta) } else m_tcnt = tt % m_counter_cycle; - if(m_tcnt == m_tcor[0] || (tt == m_tcor[0] && tt == m_counter_cycle)) { + if(u8 cmp = m_tcor[0] + 1; m_tcnt == cmp || (tt == cmp && tt == m_counter_cycle)) { if(m_chained_timer) m_chained_timer->chained_timer_tcora(); - if(!(m_tcsr & TCSR_CMFA)) { m_tcsr |= TCSR_CMFA; if(m_tcr & TCR_CMIEA) @@ -276,10 +275,12 @@ void h8_timer8_channel_device::update_counter(u64 cur_time, u64 delta) } } - if(!(m_tcsr & TCSR_CMFB) && (tt == m_tcor[1] || m_tcnt == m_tcor[1])) { - m_tcsr |= TCSR_CMFB; - if(m_tcr & TCR_CMIEB) - m_intc->internal_interrupt(m_irq_cb); + if(u8 cmp = m_tcor[1] + 1; m_tcnt == cmp || (tt == cmp && tt == m_counter_cycle)) { + if(!(m_tcsr & TCSR_CMFB)) { + m_tcsr |= TCSR_CMFB; + if(m_tcr & TCR_CMIEB) + m_intc->internal_interrupt(m_irq_cb); + } } if(tt >= 0x100 && (m_counter_cycle == 0x100 || prev >= m_counter_cycle)) { @@ -309,23 +310,24 @@ void h8_timer8_channel_device::recalc_event(u64 cur_time) cur_time = m_cpu->total_cycles(); u32 event_delay = 0xffffffff; - if((m_clear_type == CLEAR_A || m_clear_type == CLEAR_B) && m_tcor[m_clear_type - CLEAR_A]) - m_counter_cycle = m_tcor[m_clear_type - CLEAR_A]; + if(m_clear_type == CLEAR_A || m_clear_type == CLEAR_B) + m_counter_cycle = m_tcor[m_clear_type - CLEAR_A] + 1; else m_counter_cycle = 0x100; if(m_counter_cycle == 0x100 || m_tcnt >= m_counter_cycle) event_delay = 0x100 - m_tcnt; - for(auto &elem : m_tcor) { + for(auto &tcor : m_tcor) { u32 new_delay = 0xffffffff; - if(elem > m_tcnt) { - if(m_tcnt >= m_counter_cycle || elem <= m_counter_cycle) - new_delay = elem - m_tcnt; - } else if(elem <= m_counter_cycle) { + u8 cmp = tcor + 1; + if(cmp > m_tcnt) { + if(m_tcnt >= m_counter_cycle || cmp <= m_counter_cycle) + new_delay = cmp - m_tcnt; + } else if(cmp <= m_counter_cycle) { if(m_tcnt < m_counter_cycle) - new_delay = (m_counter_cycle - m_tcnt) + elem; + new_delay = (m_counter_cycle - m_tcnt) + cmp; else - new_delay = (0x100 - m_tcnt) + elem; + new_delay = (0x100 - m_tcnt) + cmp; } if(event_delay > new_delay) event_delay = new_delay; |
