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A timing-constrained incremental routing algorithm for symmetrical FPGAs

in this paper we present a timing-constrained routing algorithm for symmetrical FPGAs which embodies a novel incremental routing strategy that combines global and detailed routing, and a routing resource allocation algorithm that takes into account both the characteristics of the routing resources and timing information. Experimental results confirm that the algorithm reduces delay along the longest path in the circuit, uses routing resources efficiently, and requires low CPU time.