A microprogrammed control unit of an information processing system having a control sequencer with dual microprogram counters for performing microdiagnostics simultaneously with performing macroprograms. The microdiagnostics comprise background and operability tests, the background tests being interleaved...http://www.google.fr/patents/US4841434?utm_source=gb-gplus-shareBrevet US4841434 - Control sequencer with dual microprogram counters for microdiagnostics
Control sequencer with dual microprogram counters for microdiagnostics
