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Save-state: fix for loading state not re-asserting pending IRQs for Mouse & SSC. (#677)

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NB. Small opt to CheckInterruptSources() to explicitly test sg_Mouse.IsActive() first.
This commit is contained in:
tomcw 2019-08-26 20:10:33 +01:00
parent 94bbc5ec3d
commit d9a15c30da
4 changed files with 11 additions and 5 deletions
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3
source/CPU.cpp
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@ -426,7 +426,8 @@ static __forceinline void CheckInterruptSources(ULONG uExecutedCycles, const boo
}
MB_UpdateCycles(uExecutedCycles);
sg_Mouse.SetVBlank( !VideoGetVblBar(uExecutedCycles) );
if (sg_Mouse.IsActive())
sg_Mouse.SetVBlank( !VideoGetVblBar(uExecutedCycles) );
}
// GH#608: IRQ needs to occur within 17 cycles (6 opcodes) of configuring the timer interrupt

4
source/Mockingboard.cpp
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@ -2139,7 +2139,7 @@ bool MB_LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT slot, UINT version)
throw std::string("Card: Expected key: ") + std::string(unit);
LoadSnapshotSY6522(yamlLoadHelper, pMB->sy6522, version);
UpdateIFR(pMB, 0, pMB->sy6522.IFR); // Assert any pending IRQs
UpdateIFR(pMB, 0, pMB->sy6522.IFR); // Assert any pending IRQs (GH#677)
AY8910_LoadSnapshot(yamlLoadHelper, nDeviceNum, std::string(""));
LoadSnapshotSSI263(yamlLoadHelper, pMB->SpeechChip);
@ -2262,7 +2262,7 @@ bool Phasor_LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT slot, UINT version
throw std::string("Card: Expected key: ") + std::string(unit);
LoadSnapshotSY6522(yamlLoadHelper, pMB->sy6522, version);
UpdateIFR(pMB, 0, pMB->sy6522.IFR); // Assert any pending IRQs
UpdateIFR(pMB, 0, pMB->sy6522.IFR); // Assert any pending IRQs (GH#677)
AY8910_LoadSnapshot(yamlLoadHelper, nDeviceNum+0, std::string("-A"));
AY8910_LoadSnapshot(yamlLoadHelper, nDeviceNum+1, std::string("-B"));
LoadSnapshotSSI263(yamlLoadHelper, pMB->SpeechChip);

6
source/MouseInterface.cpp
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@ -473,8 +473,7 @@ void CMouseInterface::OnMouseEvent(bool bEventVBL)
void CMouseInterface::SetVBlank(bool bVBL)
{
if (!m_bActive)
return;
_ASSERT(m_bActive); // Only called from CheckInterruptSources(), which is guarded by an: if (sg_Mouse.IsActive())
if ( m_bVBL != bVBL )
{
@ -751,6 +750,9 @@ bool CMouseInterface::LoadSnapshot(class YamlLoadHelper& yamlLoadHelper, UINT sl
m_bButtons[1] = yamlLoadHelper.LoadBool(SS_YAML_KEY_BUTTON1);
m_bEnabled = yamlLoadHelper.LoadBool(SS_YAML_KEY_ENABLED); // MemInitializeIO() calls Initialize() which sets true
if (m_byState & STAT_INT_ALL) // GH#677
CpuIrqAssert(IS_MOUSE);
return true;
}

3
source/SerialComms.cpp
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@ -1469,6 +1469,9 @@ bool CSuperSerialCard::LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT slot, U
m_vbRxIrqPending = yamlLoadHelper.LoadBool(SS_YAML_KEY_RXIRQPENDING);
m_vbTxEmpty = yamlLoadHelper.LoadBool(SS_YAML_KEY_WRITTENTX);
if (m_vbTxIrqPending || m_vbRxIrqPending) // GH#677
CpuIrqAssert(IS_SSC);
std::string serialPortName = yamlLoadHelper.LoadString(SS_YAML_KEY_SERIALPORTNAME);
SetSerialPortName(serialPortName.c_str());