DPI-C is a powerful way to integrate C code with SystemVerilog. The interface is a simple function or task call, identical to a normal SystemVerilog function or task call. This paper will describe DPI-C usage, including imported calls, exported calls, context calls, input, output and inout arguments, call-by-reference and return values. This will be a good reference for beginners but also containing tips and advanced usage for the current DPI-C user.
