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GBA: Fix rewind boundary conditions

This commit is contained in:
Jeffrey Pfau 2015-01-05 22:56:56 -08:00
parent c0c4d21b68
commit d0f4584f74
1 changed files with 2 additions and 2 deletions
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4
src/gba/gba-serialize.c
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@ -262,7 +262,7 @@ void GBARewind(struct GBAThread* thread, int nStates) {
if (!state) {
return;
}
thread->rewindBufferSize -= nStates;
thread->rewindBufferWriteOffset = (offset + thread->rewindBufferCapacity - nStates) % thread->rewindBufferCapacity;
thread->rewindBufferSize -= nStates - 1;
thread->rewindBufferWriteOffset = (offset + 1) % thread->rewindBufferCapacity;
GBADeserialize(thread->gba, state);
}