A microprogramming language-directed microarchitecture

A microarchitecture designed for high performance, control store efficiency, and ease of microprogramming is described. These objectives were achieved by orienting the design to support the requirements of a powerful higher-level-like microprogramming language. 1, 2 The language is machine dependent and achieves efficiency of execution and space, as well as compactness of expression through relatively powerful constructs such as partial field operations and by permitting appropriate suboptions to be coupled with each of the various constructs. The relative utility of the various constructs is indicated by a statistical analysis of an actual emulator.