Method IORead

source/Mockingboard.cpp:644–649

// Echo+ mode - Phasor's 2nd 6522 is mapped to every 16-byte offset in $Cnxx (Echo+ has a single 6522 controlling two AY-3-8913's)

BYTE __stdcall MockingboardCard::IORead(WORD PC, WORD nAddr, BYTE bWrite, BYTE nValue, ULONG nExecutedCycles)
{
	UINT slot = (nAddr >> 8) & 0xf;
	MockingboardCard* pCard = (MockingboardCard*)MemGetSlotParameters(slot);
	return pCard->IOReadInternal(PC, nAddr, bWrite, nValue, nExecutedCycles);
}

BYTE MockingboardCard::IOReadInternal(WORD PC, WORD nAddr, BYTE bWrite, BYTE nValue, ULONG nExecutedCycles)
{