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02174: dkongjr and clones + mario and clones + pestplce: Music speed regression

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This commit is contained in:
Aaron Giles 2008-08-29 06:01:09 +00:00
parent baf68b6e10
commit c3f7d110df
1 changed files with 2 additions and 1 deletions
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3
src/emu/cpu/mcs48/mcs48.c
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@ -844,10 +844,11 @@ static void burn_cycles(int count)
/* if the timer is enabled, accumulate prescaler cycles */ /* if the timer is enabled, accumulate prescaler cycles */
if (mcs48.timecount_enabled & TIMER_ENABLED) if (mcs48.timecount_enabled & TIMER_ENABLED)
{ {
UINT8 oldtimer = mcs48.timer;
mcs48.prescaler += count; mcs48.prescaler += count;
mcs48.timer += mcs48.prescaler >> 5; mcs48.timer += mcs48.prescaler >> 5;
mcs48.prescaler &= 0x1f; mcs48.prescaler &= 0x1f;
timerover = (mcs48.timer == 0); timerover = (oldtimer != 0 && mcs48.timer == 0);
} }
/* if the counter is enabled, poll the T1 test input once for each cycle */ /* if the counter is enabled, poll the T1 test input once for each cycle */