This paper is concerned with a software simulation of movement of the human body. This simulation is being designed to drive a system for computer animation as part of a larger program concerned with the translation of movement notation into animated graphics. The simulation is based on a model of the human body as a network of special-purpose processors -- one processor situated at each joint of the body -- each with an instruction set designed around a set of "primitive movement concepts." We shall discuss the extent to which all these processors may employ the same architecture and the function of the network structure.