Efficient implementations of wide logic functions (e.g., priority encoders, AND gates, OR gates) in programmable ICs include carry chain multiplexers driven by dual-output programmable function generators. A function generator having two output signals is programmed to generate first and second function...http://www.google.com/patents/US7205790?utm_source=gb-gplus-sharePatent US7205790 - Programmable integrated circuit providing efficient implementations of wide logic functions
