A one-chip, integrated-circuit, microprogram sequence controller for use in a microprogrammed system having a data processing unit and a microprogram memory, that controls the order and execution of microinstructions within the microprogram memory. The controller is provided with two 16-bit microinstruction...http://www.google.com.au/patents/US4868735?utm_source=gb-gplus-sharePatent US4868735 - Interruptible structured microprogrammed sixteen-bit address sequence controller
