Formal Development of NoC Systems in B

When developing complex Network-on-Chip (NoC) systems we need to ensure that they satisfy their functional requirements. This can be achieved by developing the systems in a structured way using a formal method with tool support. We use the B Action Systems formalism for this purpose. We give a general formal framework for the development of NoC systems avoiding architectures with complex controllers and complex arbiter modules for deciding the routing path of a data packet. The development is performed in a stepwise manner composing more advanced routing components out of simpler units.