| 摘要 |
PURPOSE: To improve an effective data transfer speed by executing data transfer processing between a data processing unit and a data input/output device in the data transfer system between the data processing unit and the data input/ output device. CONSTITUTION: A data input/output device 2 receives data from plural connected destinations through plural virtual channels on a physical channel, stores the data for each connected destination and transfers the data to a data processing unit 1 in the unit of frames. In this case, the data processing unit 1 informs a reception buffer area to the data input/output device 2 in advance. When the data input/output device 2 receives data frames, the data input/output device 2 transfers data to an area in the reception buffer area to be informed after an area of the reception data transferred precedingly to the data processing unit 1 and informs the reception of data frames at the end of the transfer. |
