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GBA Timers: Fix deserializing count-up timers

This commit is contained in:
Vicki Pfau 2020-02-25 18:03:07 -08:00
parent 77a67f8904
commit 03d85b44d2
2 changed files with 6 additions and 8 deletions
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1
CHANGES
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@ -12,6 +12,7 @@ Emulation fixes:
- GBA SIO: Fix Multiplayer busy bit
- GBA SIO: Fix double-unloading active driver
- GBA SIO: Fix copying Normal mode transfer values
- GBA Timers: Fix deserializing count-up timers
- GBA Video: Latch scanline at end of Hblank (fixes mgba.io/i/1319)
- GBA Video: Fix Hblank timing
Other fixes:

13
src/gba/io.c
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@ -964,16 +964,13 @@ void GBAIODeserialize(struct GBA* gba, const struct GBASerializedState* state) {
for (i = 0; i < 4; ++i) {
LOAD_16(gba->timers[i].reload, 0, &state->timers[i].reload);
LOAD_32(gba->timers[i].flags, 0, &state->timers[i].flags);
if (i > 0 && GBATimerFlagsIsCountUp(gba->timers[i].flags)) {
// Overwrite invalid values in savestate
gba->timers[i].lastEvent = 0;
} else {
LOAD_32(when, 0, &state->timers[i].lastEvent);
gba->timers[i].lastEvent = when + mTimingCurrentTime(&gba->timing);
}
LOAD_32(when, 0, &state->timers[i].lastEvent);
gba->timers[i].lastEvent = when + mTimingCurrentTime(&gba->timing);
LOAD_32(when, 0, &state->timers[i].nextEvent);
if (GBATimerFlagsIsEnable(gba->timers[i].flags)) {
if ((i < 1 || !GBATimerFlagsIsCountUp(gba->timers[i].flags)) && GBATimerFlagsIsEnable(gba->timers[i].flags)) {
mTimingSchedule(&gba->timing, &gba->timers[i].event, when);
} else {
gba->timers[i].event.when = when + mTimingCurrentTime(&gba->timing);
}
LOAD_16(gba->memory.dma[i].reg, (REG_DMA0CNT_HI + i * 12), state->io);