More Complex Polymorphic Circuits: A Way to Implementation of Smart Dependable Systems

Today, there are a lot of application areas, where a circuit, which is able to perform different functions in different situations, may be useful. Typically, polymorphic circuits provide very area-efficient implementation and have also embedded and distributed sensing of an environment state. It might be a useful attribute to be considered for a dependable system design. This paper is dealing with a more complex polymorphic circuits with dependability feature and their physical implementation. The actual experimental setup was based around reconfigurable polymorphic chip REPOMO32 as a target environment, which is primarily designed to be configured (besides the configuration bit stream itself) by means of using the level of power supply voltage (Vdd). A part of polymorphic FIR filter was mapped onto the resources available inside REPOMO32 chip. Obtained results indicate feasibility of a full-scale implementation comprising several REPOMO32 chips.