| 摘要 |
PURPOSE:To connect plural data transmitting/receiving devices to a common bus and to attain transfer of various data by providing which can be used even for limit of transfer of a DMA device to the data transmitting/receiving device and transferring the data on said memory directly to the data transmitting/receiving device. CONSTITUTION:A high-speed data transmitting/receiving device 40 is provided for a data processing system, and the data supplied from outside are stored temporarily to a memory 44 for reception data. When this storage of data is through, a central processing part 10 identifies data transmitting/receiving devices 301 and 302 of the receiver side for data stored in an optional area of the memory 44 through a memory reading circuit 45 for reception data. Then the direct access is supplied to transmission/reception data processing parts 311 and 312 of devices 301 and 302, and data are transferred with no intervention of a shared memory 20. The plural data transmitting/receiving devices are connected to a common bus 50 to transfer various data at a high speed. |
