This paper describes the T-Ruby system for designing VLSI circuits, starting from formal specifications in which they are described in terms of relational abstractions of their behaviour. The design process involves correctness-preserving transformations based on proved equivalences between relations, together with the addition of constr:sints. A class of implementable relations is defined. The tool enables such relations to be simulated or ti~anslated into a circuit description in VHDL. The

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... '31 'g n process is illustrated by the derivation of a circuit for 2-dimensional convolution. Authorized licensed use limited to: Danmarks Tekniske Informationscenter. Downloaded on March 02,2010 at 05:54:41 EST from IEEE Xplore. Restrictions apply.