A multi-ported register cell. The register cell includes a base cell and a plurality of history cells, each of which is coupled to the base cell. Each of the plurality history cells is coupled to write to the base cell through a first port, and each of the plurality of history cells is coupled to receive...http://www.google.fr/patents/US7366032?utm_source=gb-gplus-shareBrevet US7366032 - Multi-ported register cell with randomly accessible history
Multi-ported register cell with randomly accessible history