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GB Timer: Fix low bit of DIV resetting

This commit is contained in:
Vicki Pfau 2018-02-03 21:47:10 -08:00
parent 0ce3b9a2b7
commit a382c1ee9b
2 changed files with 1 additions and 2 deletions
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1
cinema/gb/mooneye-gb/acceptance/timer/tim01_div_trigger/manifest.yml
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@ -1 +0,0 @@
fail: true

2
src/gb/timer.c
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@ -70,7 +70,7 @@ void GBTimerDivReset(struct GBTimer* timer) {
timer->nextDiv -= mTimingUntil(&timer->p->timing, &timer->event);
mTimingDeschedule(&timer->p->timing, &timer->event);
_GBTimerDivIncrement(timer, (timer->p->cpu->executionState + 1) & 3);
if (timer->internalDiv & (timer->timaPeriod >> 1)) {
if (((timer->internalDiv << 1) | ((timer->nextDiv >> 3) & 1)) & timer->timaPeriod) {
++timer->p->memory.io[REG_TIMA];
if (!timer->p->memory.io[REG_TIMA]) {
mTimingSchedule(&timer->p->timing, &timer->irq, 4 - ((timer->p->cpu->executionState + 1) & 3));