Microinstruction selection circuitry effects the selection of successive microinstructions of a sequence. Current and next PCs are stored in first and second registers. Current PC is provided to a memory from one register to fetch a current instruction from memory while a next PC is generated and stored...http://www.google.de/patents/US4360868?utm_source=gb-gplus-sharePatent US4360868 - Instruction prefetch means having first and second register for storing and providing a current PC while generating a next PC
Instruction prefetch means having first and second register for storing and ...