Abstract
A new CAD tool for digital combinatorial circuit design called DiCES and based on artificial intelligence techniques has been developed. It includes a logic synthesizer and minimizer to synthesize and simplify Boolean expressions with an arbitrary number of variables. A rule-based forward-driven expert subsystem is also provided to select the technology and design approach that best satisfy the user's design criteria, including minimization of area/number of gates, propagation delay/speed, cost/number of inputs, power dissipation, and flexibility/ease of modification. The system is implemented in Franz Lisp, running under Vax/Unix on a Vax 11 750 . The results which are included in this paper show that DiCES yields excellent simplified circuits at the expense of execution speed. Technology and design approach results are also satisfactory.
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