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GBA: Process multiple timer events at once, if necessary

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This commit is contained in:
Jeffrey Pfau 2015-08-11 21:15:09 -07:00
parent ebfcc70b3d
commit 4fd479897c
3 changed files with 6 additions and 1 deletions
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1
CHANGES
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@ -122,6 +122,7 @@ Misc:
- Qt: Set window path to loaded ROM
- GBA Memory: Run multiple DMAs in a tight loop if they all occur before present
- GBA Audio: Process multiple audio events at once, if necessary
- GBA: Process multiple timer events at once, if necessary
0.2.1: (2015-05-13)
Bugfixes:

2
src/gba/gba.c
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@ -244,7 +244,7 @@ static int32_t GBATimersProcessEvents(struct GBA* gba, int32_t cycles) {
if (timer->enable) {
timer->nextEvent -= cycles;
timer->lastEvent -= cycles;
if (timer->nextEvent <= 0) {
while (timer->nextEvent <= 0) {
timer->lastEvent = timer->nextEvent;
timer->nextEvent += timer->overflowInterval;
gba->memory.io[REG_TM0CNT_LO >> 1] = timer->reload;

4
src/gba/serialize.c
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@ -103,6 +103,10 @@ bool GBADeserialize(struct GBA* gba, const struct GBASerializedState* state) {
GBALog(gba, GBA_LOG_WARN, "Savestate is corrupted: overflowInterval is negative");
error = true;
}
if (state->timers[0].nextEvent < 0 || state->timers[1].nextEvent < 0 || state->timers[2].nextEvent < 0 || state->timers[3].nextEvent < 0) {
GBALog(gba, GBA_LOG_WARN, "Savestate is corrupted: timer nextEvent is negative");
error = true;
}
if (state->audio.eventDiff < 0) {
GBALog(gba, GBA_LOG_WARN, "Savestate is corrupted: audio eventDiff is negative");
error = true;