Carioca-A ´smart´ and flexible switch-box router

A two-dimensional router utilizing two layers is presented. The routing technique can be described as follows: After partitioning of the nets into a set of subnets, the construction is carried out on a step-by-step basis, which allows the system to dynamically take into account new information. This part has been implemented with a blackboard architecture. The router can handle pins that are not on a grid on one set of parallel edges. To provide a solution to a given problem, the router expands the switch-box by adding rows dynamically where they are needed. Many test cases have been run successfully, and some results, including Burstein´s difficult switch-box, are presented.<>