| 摘要 |
PURPOSE:To conduct properly and quickly the communication between processors by providing two memories exclusively used between both the processors alternately in performing communication between a main processor and plural slave processors. CONSTITUTION:The main processor 1 is connected to the slave processors 2, 3 having two memories M1, M2 each by a bus line l. The processing is performed by using the memory M1 for the processor 1 and using the memory M2 for the processors 2, 3 exclusively. When the communication is necessary, the content of communication is written in the memories M1, M2 used by the own processor at present, the request of changeover is given to the opposite processor, and when the changeover is possible, the memories M1, M2 are changed over. After the changeover, the content of communication is read by using the memories M2, M1 used exclusively by the opposite processor before changeover. |
