HISDL—a structure description language
The features of a language designed for the description of the structure of computer systems are described. The structure of a system is specified hierarchically as an interconnection of components with each component being a named instance of a component type. The system itself is another component type. The interconnection between components is specified in two ways: either by specifying all the ports that are connected together, or by specifying a component and the ports that are connected to its ports. A structure specification is a list of such connection specifications. The language has an iterative construct for specifying highly regular structures, and a conditional construct is also provided. A component type can be recursively specified while parameterization of component type specifications is supported. The latter is particularly useful for specifying classes of components of similar structure.