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[maintenance] Add a note explaining why we aren't emulating CP clear register writes. 

For further reference, see also r700f5eabc752.
This commit is contained in:
NeoBrainX 2012-01-21 14:58:29 +01:00
parent 96d56cd8ef
commit 2d6d73df95
2 changed files with 9 additions and 5 deletions
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13
Source/Core/VideoCommon/Src/CommandProcessor.cpp
View File

@ -311,6 +311,7 @@ void Write16(const u16 _Value, const u32 _Address)
UCPClearReg tmpCtrl(_Value);
m_CPClearReg.Hex = tmpCtrl.Hex;
DEBUG_LOG(COMMANDPROCESSOR,"\t write to CLEAR_REGISTER : %04x", _Value);
SetCpClearRegister();
}
break;
@ -677,13 +678,15 @@ void SetCpControlRegister()
}
// NOTE: The implementation of this function should be correct, but we intentionally aren't using it at the moment.
// We don't emulate proper GP timing anyway at the moment, so this code would just slow down emulation.
void SetCpClearRegister()
{
if (IsOnThread())
{
if (!m_CPClearReg.ClearFifoUnderflow && m_CPClearReg.ClearFifoOverflow)
bProcessFifoToLoWatermark = true;
}
// if (IsOnThread())
// {
// if (!m_CPClearReg.ClearFifoUnderflow && m_CPClearReg.ClearFifoOverflow)
// bProcessFifoToLoWatermark = true;
// }
}
} // end of namespace CommandProcessor

1
Source/Core/VideoCommon/Src/CommandProcessor.h
View File

@ -158,6 +158,7 @@ void UpdateInterruptsFromVideoBackend(u64 userdata);
bool AllowIdleSkipping();
void SetCpClearRegister();
void SetCpControlRegister();
void SetCpStatusRegister();
void SetOverflowStatusFromGatherPipe();