Transmit and receive data are stored in buffer regions defined in first and second memories of a system residing on a network. The buffer regions are pointed to by multiple descriptor rings that are also stored in the memories. In accordance with one aspect of the invention, the two memories reside on...http://www.google.com.mx/patents/US5136582?utm_source=gb-gplus-sharePatent US5136582 - Memory management system and method for network controller
