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Fixed stuck decrementer interrupt.

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This commit is contained in:
Michael Zapf 2013-10-21 18:42:10 +00:00
parent 81c146cc3b
commit ac3c6db75e
1 changed files with 8 additions and 4 deletions
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12
src/emu/cpu/tms9900/tms9995.c
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@ -1353,10 +1353,13 @@ void tms9995_device::int_prefetch_and_decode()
{ {
m_int_pending = 0; m_int_pending = 0;
if (m_int1_active && intmask >= 1 && check_int) m_int_pending |= PENDING_LEVEL1; if (check_int)
if (m_int_overflow && intmask >= 2 && check_int) m_int_pending |= PENDING_OVERFLOW; {
if (m_int_decrementer && intmask >= 3 && check_int) m_int_pending |= PENDING_DECR; if (m_int1_active && intmask >= 1) m_int_pending |= PENDING_LEVEL1;
if (m_int4_active && intmask >= 4 && check_int) m_int_pending |= PENDING_LEVEL4; if (m_int_overflow && intmask >= 2) m_int_pending |= PENDING_OVERFLOW;
if (m_int_decrementer && intmask >= 3) m_int_pending |= PENDING_DECR;
if (m_int4_active && intmask >= 4) m_int_pending |= PENDING_LEVEL4;
}
if (m_int_pending!=0) if (m_int_pending!=0)
{ {
@ -2057,6 +2060,7 @@ void tms9995_device::trigger_decrementer()
m_int_decrementer = true; m_int_decrementer = true;
} }
} }
else m_int_decrementer = false;
} }
} }