A bus interface module ("BIM") connectable to a debug bus is described. In one embodiment, the BIM comprises a plurality of BIM segments connected in a ring such that an output of each BIM is connected to an input of a next BIM via the debug bus, the BIM comprising logic for receiving data from a previous...http://www.google.co.uk/patents/US20040193962?utm_source=gb-gplus-sharePatent US20040193962 - Bus interface module