Methods and cores using an existing processor implemented in a Programmable Logic Device (PLD) to emulate a target processor, where the existing and target processors support different instruction sets and conform to different bus interface protocols. A bus interface unit is coupled to an existing processor...http://www.google.co.uk/patents/US7480786?utm_source=gb-gplus-sharePatent US7480786 - Methods and cores using existing PLD processors to emulate processors having different instruction sets and bus protocols
