| 摘要 |
PROBLEM TO BE SOLVED: To realize high data transfer performance while reducing a load on a CPU, etc.SOLUTION: In a bridge device as one embodiment of the invention, a receiving unit receives, from an external device, first transfer information in which a read address of a data storage device is specified. A first processing unit generates a first command for instructing readout of data on the basis of the first transfer information, and outputs the first command to a first controller. A data buffer holds the data read out by the first controller. A second processing unit generates a second command for instructing a second controller to read the data held by the data buffer, and outputs the second command to the second controller. If a predetermined exceptional event occurs, the data buffer outputs dummy data for the DMA transfer of the second controller so as to properly complete the DMA transfer without outputting the data held in the data buffer, and then notifies the external device of the occurrence of the exceptional event. |
