The Synchronous Message Exchange (SME) model, is a programming model, which closely resembles the CSP model and which is suitable for describing hardware. This paper aims to combine the theory taught in a machine architecture class, with the SME model, by implementing a MIPS processor using SME. I show how to construct the components of a MIPS processor as SME processes, and how to connect them by using SME busses. Furthermore, I show how to extend the processor, by introducing additional instructions and by pipelining the processor.