Function HDDReadFIFO

pcsx2/DEV9/DEV9.cpp:259–283

	dev9.fifo_bytes_write += read;
}
void HDDReadFIFO()
{
	pxAssert(dev9.ata->dmaReady && (dev9.if_ctrl & SPD_IF_ATA_DMAEN));
	pxAssert((dev9.if_ctrl & SPD_IF_READ) == 0);

	const int unread = (dev9.fifo_bytes_write - dev9.fifo_bytes_read);
	const int base = dev9.fifo_bytes_read % (SPD_DBUF_AVAIL_MAX * 512);

	pxAssert(unread <= SPD_DBUF_AVAIL_MAX * 512);

	int write;
	if (base + unread > SPD_DBUF_AVAIL_MAX * 512)
	{
		const int was = SPD_DBUF_AVAIL_MAX * 512 - base;
		write = dev9.ata->WriteDMAFromFIFO(dev9.fifo + base, was);
		if (write == was)
			write += dev9.ata->WriteDMAFromFIFO(dev9.fifo, unread - was);
	}
	else
	{
		write = dev9.ata->WriteDMAFromFIFO(dev9.fifo + base, unread);
	}

	dev9.fifo_bytes_read += write;
}
void IOPReadFIFO()
{
	pxAssert((dev9.dma_iop_ptr != nullptr) && (dev9.xfr_ctrl & SPD_XFR_DMAEN));