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This paper describes a high-level synthesis system, called CAMAD, for transforming algorithms into hardware implementation structures at register-transfer level. The algorithms are used to specify the behaviors of the hardware to be designed. They are first translated into a formal representation model which is based on timed Petri nets and consists of separate but related descriptions of control and data path. The formal model is used as an intermediate design representation and supports an iterative transformation approach to high-level synthesis. The basic idea is that once the behavioral specification is translated into the initial design representation, it can be viewed as a primitive implementation. Correctness-preserving transformations are then used to successively transform the initial design into an efficient implementation. Selection of transformations is guided by an optimization strategy which makes design …