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The paper addresses firmware implementation of multiple-output combinational and sequential Boolean functions based on cascades of Look-Up Tables (LUTs). A LUT cascade is described as a means of compact representation of a large class of Boolean functions, which reduces their evaluation to multiple indirect memory accesses. A LUT-oriented decomposition technique is illustrated on several examples. A specialized micro-engine is proposed for sequential processing of LUT cascades by means of multi-way branching. The presented method provides high performance micro-programmed control for embedded applications.
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