Exact two-level minimization of hazard-free logic with multiple-input changes

This paper describes a new method for exact hazard-free logic-minimization of Boolean functions. Given an incompletely-specified Boolean function, the method produces a minimum-cost sum-of-products implementation which is hazard-free for a given set of multiple-input changes, if such a solution exists. The method is a constrained version of the Quine-McCluskey algorithm. It has been automated and applied to a number of examples. Results are compared with results of a comparable non-hazard-free method (espresso-exact). Overhead due to hazard elimination is shown to be negligible.<
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