Design of CMCU with EOLC and Encoding of Collections of Microoperations

The method of design of compositional microprogram control unit with codes sharing and collections of microoperations is proposed. The proposed method is based on application of special address transformer to form an address of microinstruction on the base of its representation as pair <code of operational linear chain, code of component>. The control algorithm is described using flow-chart with elementary operational linear chains. Such approach permits to use all positive features of codes sharing independently on characteristics of interpreted flow-chart of algorithm. The proposed method permits to decrease the size of control memory in comparison with all known methods of such control units design. An example of proposed method application is given.