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Improved Controller Synthesis from Esterel

Soviani, Cristian; Zeng, Jia; Edwards, Stephen A.

We present a new procedure for automatically synthesizing controllers from high-level Esterel specifications. Unlike existing \textsc{rtl} synthesis approaches, this approach frees the designer from tedious bit-level state encoding and certain types of inter-machine communication. Experimental results suggest that even with a fairly primitive state assignment heuristic, our compiler consistently produces smaller, slightly faster circuits that the existing Esterel compiler. We mainly attribute this to a different style of distributing state bits throughout the circuit. Initial results are encouraging, but some hand-optimized encodings suggest room for a better state assignment algorithm. We are confident that such improvements will make our technique even more practical.

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Academic Units
Computer Science
Publisher
Department of Computer Science, Columbia University
Series
Columbia University Computer Science Technical Reports, CUCS-015-04
Published Here
April 26, 2011