| 摘要 |
PURPOSE:To simplify the access control of a common resource by connecting plural arithmetic units in parallel to the output side of an instruction register and controlling these arithmetic units independently of and synchronously with each other. CONSTITUTION:The machine word instructions read out of a main memory 1 are supplied to address map ROMs 40a and 40b via a data bus 2 and an instruction register 3. These ROMs 40a and 40b produce independently addresses of control memories 60a and 60b storing microinstructions to be executed by instruction executing parts 90a and 90b. In other words, arithmetic units 200a and 200b are connected in parallel to the output side of the register 3 and actuated in each working range independently of each other.
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