A Method of Reduction of the Microinstructions of Synchronous Digital Systems

of the combined addressing because of the large number of unconditional transfers that must be entered to insure the correct function of the automaton [4, 5, 7, 8]. The present method is based on dividing the MI into subsets to minimize the MI numbers. The Combined Microinstructions (CMI) are used in MicroProgram Memory (MPM). The control words can be stored, with the following format, in various devices such as Programmable Logic Array (PLA), read only memory (ROM) and others. See Figure 1 below: ABSTRACT: In this paper, the author presents a method to synthesize the Algorithm State Machines (ASM) for synchronous digital systems using Combined Addressing. In This proposed method, the microinstructions are divided into subsets, and thus the Numbers of microinstructions are apparently minimized and the throughput time of the automation is reduced.