Example #1
0
// Handle the EE transfer.
static __fi void HandleEETransfer()
{
	if(sif0dma.chcr.STR == false)
	{
		//DevCon.Warning("Replacement for irq prevention hack EE SIF0");
		sif0.ee.end = false;
		sif0.ee.busy = false;
		return;
	}

	if (dmacRegs.ctrl.STS == STS_SIF0)
	{
		DevCon.Warning("SIF0 stall control");
	}

	/*if (sif0dma.qwc == 0)
		if (sif0dma.chcr.MOD == NORMAL_MODE)
			if (!sif0.ee.end){
				DevCon.Warning("sif0 irq prevented");
				done = true;
				return;
			}*/

	if (sif0dma.qwc <= 0)
	{
		if ((sif0dma.chcr.MOD == NORMAL_MODE) || sif0.ee.end)
		{
			// Stop transferring ee, and signal an interrupt.
			done = true;
			EndEE();
		}
		else if (sif0.fifo.size >= 4) // Read a tag
		{
			// Read Fifo into an ee tag, transfer it to sif0dma
			// and process it.
			ProcessEETag();
		}
	}

	if (sif0dma.qwc > 0) // If we're writing something, continue to do so.
	{
		// Write from Fifo to EE.
		if (sif0.fifo.size > 0)
		{
			WriteFifoToEE();
		}
	}
}
Example #2
0
File: Sif1.cpp Project: tsiru/pcsx2
// Handle the EE transfer.
static __fi void HandleEETransfer()
{
	if(sif1dma.chcr.STR == false)
	{
		//DevCon.Warning("Replacement for irq prevention hack EE SIF1");
		sif1.ee.end = false;
		sif1.ee.busy = false;
		return;
	}
	if (dmacRegs.ctrl.STD == STD_SIF1)
	{
		DevCon.Warning("SIF1 stall control"); // STD == fromSIF1
	}

	/*if (sif1dma.qwc == 0)
		if (sif1dma.chcr.MOD == NORMAL_MODE)
			if (!sif1.ee.end){
				DevCon.Warning("sif1 irq prevented CHCR %x QWC %x", sif1dma.chcr, sif1dma.qwc);
				done = true;
				return;
			}*/

	// If there's no more to transfer.
	if (sif1dma.qwc <= 0)
	{
		// If NORMAL mode or end of CHAIN then stop DMA.
		if ((sif1dma.chcr.MOD == NORMAL_MODE) || sif1.ee.end)
		{
			done = true;
			EndEE();
		}
		else
		{
			done = false;
			if (!ProcessEETag()) return;
		}
	}
	else
	{
		if (sif1.fifo.sif_free() > 0)
		{
			WriteEEtoFifo();
		}
	}
}