Modification of the microcommand addressing system in a control unit with code sharing

Abstract

This article proposes two modifications of the microcommand addressing system in a compositional microprogram control unit with code sharing. The modifications are based on using FSM pseudoequivalent states to reduce the number of rows in the FSM transition table and thereby to reduce the complexity of the combinational part of the device. Methods are proposed for synthesizing compositional control units with a modified microcommand addressing system. The research results are presented and appropriate fields of application of the methods proposed are considered.