| 摘要 |
PURPOSE:To simplify a procedure of a communication means for data delivering and receiving and a hardware and transfer a large amount of data in a short time by assigning a right of using a memory for data delivering and receiving to the other voluntarily. CONSTITUTION:In case of a MPU 3, 4 do no deliver and receive data, memory 5, 6 are not set any flag on the top part. Thereby MPU 3, 4 obtain the right of using memory 5, 6, and inverse a FF7, 8 and repeat an action to assign the right of using a memory voluntarily. In case of the data are transferred to the MPU 4 from the MPU 3, the transferred data is written and data flugs are set to the memory 5 after the right of using the memory 5 is given. After the completion of the data writing, a set signal is given to a FF7, and the FF7 is inverted to give the right of using the memory 5. By this means, data, i.e., transferred data corresponding to a data prominant flag of the memory 5 is read in the MPU 4. |
