Dasko/snes9x
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Timings.IRQTriggerCycles is 3.5 dot clocks.

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This commit is contained in:
Brandon Wright 2018-09-09 16:15:38 -05:00
parent ddde0c2dc7
commit c61d81269a
2 changed files with 4 additions and 4 deletions
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2
memmap.cpp
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@ -3820,7 +3820,7 @@ void CMemory::ApplyROMFixes (void)
Timings.HDMAStart = SNES_HDMA_START_HC + Settings.HDMATimingHack - 100;
Timings.HBlankStart = SNES_HBLANK_START_HC + Timings.HDMAStart - SNES_HDMA_START_HC;
Timings.IRQTriggerCycles = 10;
Timings.IRQTriggerCycles = 14;
if (!Settings.DisableGameSpecificHacks)
{

6
ppu.cpp
View File

@ -306,7 +306,7 @@ static int CyclesUntilNext (int hc, int vc)
void S9xUpdateIRQPositions (bool initial)
{
PPU.HTimerPosition = PPU.IRQHBeamPos * ONE_DOT_CYCLE + Timings.IRQTriggerCycles;
PPU.HTimerPosition = (PPU.IRQHBeamPos + 1) * ONE_DOT_CYCLE + Timings.IRQTriggerCycles;
PPU.HTimerPosition -= PPU.IRQHBeamPos ? 0 : ONE_DOT_CYCLE;
PPU.HTimerPosition += PPU.IRQHBeamPos > 322 ? (ONE_DOT_CYCLE / 2) : 0;
PPU.HTimerPosition += PPU.IRQHBeamPos > 326 ? (ONE_DOT_CYCLE / 2) : 0;
@ -341,9 +341,9 @@ void S9xUpdateIRQPositions (bool initial)
else if (!PPU.HTimerEnabled && PPU.VTimerEnabled)
{
if (CPU.V_Counter == PPU.VTimerPosition && initial)
Timings.NextIRQTimer = CPU.Cycles + Timings.IRQTriggerCycles;
Timings.NextIRQTimer = CPU.Cycles + Timings.IRQTriggerCycles - ONE_DOT_CYCLE;
else
Timings.NextIRQTimer = CyclesUntilNext (Timings.IRQTriggerCycles, PPU.VTimerPosition);
Timings.NextIRQTimer = CyclesUntilNext (Timings.IRQTriggerCycles - ONE_DOT_CYCLE, PPU.VTimerPosition);
}
else
{