Function SIF0Dma

pcsx2/Sif0.cpp:293–329

Transfer IOP to EE, putting data in the fifo as an intermediate step.

// Transfer IOP to EE, putting data in the fifo as an intermediate step.
__fi void SIF0Dma()
{
	int BusyCheck = 0;
	Sif0Init();

	do
	{
		//I realise this is very hacky in a way but its an easy way of checking if both are doing something
		BusyCheck = 0;

		if (sif0.iop.counter == 0 && sif0.iop.writeJunk && sif0.fifo.sif_free() >= sif0.iop.writeJunk)
		{
			SIF_LOG("Writing Junk %d", sif0.iop.writeJunk);
			sif0.fifo.writeJunk(sif0.iop.writeJunk);
			sif0.iop.writeJunk = 0;
		}

		if (sif0.iop.busy)
		{
			if(sif0.fifo.sif_free() > 0 || (sif0.iop.end && sif0.iop.counter == 0))
			{
				BusyCheck++;
				HandleIOPTransfer();
			}
		}
		if (sif0.ee.busy)
		{
			if(sif0.fifo.size >= 4 || (sif0.ee.end && sif0ch.qwc == 0))
			{
				BusyCheck++;
				HandleEETransfer();
			}
		}
	} while (/*!done && */BusyCheck > 0); // Substituting (sif0.ee.busy || sif0.iop.busy) breaks things.

	Sif0End();
}

__fi void  sif0Interrupt()
{