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System: Basic timings for GPU scanout

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This commit is contained in:
Connor McLaughlin
2019-09-17 14:25:25 +10:00
parent 9475c281bd
commit f47688b61f
7 changed files with 268 additions and 34 deletions
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17
src/pse/system.cpp
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@ -53,6 +53,8 @@ bool System::DoState(StateWrapper& sw)
void System::Reset()
{
SetSliceTicks(1);
m_cpu->Reset();
m_bus->Reset();
m_dma->Reset();
@ -75,14 +77,13 @@ bool System::SaveState(ByteStream* state)
void System::RunFrame()
{
u32 current_frame_number = m_frame_number;
u32 ticks = 0;
while (current_frame_number == m_frame_number && ticks < (44100 * 300))
while (current_frame_number == m_frame_number)
{
m_cpu->Execute();
ticks++;
}
const TickCount pending_ticks = m_cpu->Execute();
m_gpu->Flush();
// run pending ticks from CPU for other components
m_gpu->Execute(pending_ticks);
}
}
bool System::LoadEXE(const char* filename)
@ -172,3 +173,7 @@ bool System::LoadEXE(const char* filename)
return true;
}
void System::SetSliceTicks(TickCount downcount)
{
m_cpu->SetSliceTicks(downcount);
}