The controls automation system

This paper discusses the specifications, programming implementation, and use of a design automation system that can be used in the development of any computer having read-only storage (ROS) controls. This system, called the Controls Automation System (CAS), designed concurrently with the IBM System/360 was used in the development of Models 40, 50, 65 and 67. The current version of CAS is used by IBM to aid in the design of all systems with ROS controls. The system has been found particularly attractive for the simulation of microprogram-controlled machines although its use is not restricted to them. The newly developed elements of this system are: 1) a programming language for describing the data flow of a machine; 2) a program for translating a variety" of microprogramming languages into a common one; and 3) a set of computer programs enabling the machines operation to be simulated on an IBM 7090/1401 computer. In addition, CAS has facilities for preparing microprogram design records in a form that is easy to use and understand, and it provides for rapid updating of design records.