Guidance on SPI Interface Stratix III with ADC DAC Loopback in Verilog

A quick search for "verilog spi module" returns plenty of links that should help. If you have some basic verilog understanding you should be able to fathom some of what's there. You might want to start by looking through this example (https://github.com/zouppen/simulavr/blob/master/examples/verilog/spi.v). Equally useful is this link (http://www.elecdude.com/2013/10/spi-verilog-code-master-slave-code-with.html). Note: these are both somewhat idealistic implementations and wouldn't be how I would implement an SPI interface for a real application. However, they should prove very useful exercises.