| 摘要 |
PROBLEM TO BE SOLVED: To provide a data transfer device in which while suppressing increase in a circuit size or wiring, DMA transfer executed by a plurality of programs in a concurrent and parallel manner is performed.SOLUTION: Data transfer between a memory storing data and a DMA device is performed by a plurality of programs as follows: A data transfer command instructed from the CPU is stored in a storage medium, and addresses of the storage means, in which data transfer commands respectively corresponding to a plurality of programs are stored, are set in a plurality of counters. While changing over a plurality of counters on the basis of a data transfer request from a DMA device, DMA data transfer between a memory and the DMA device is performed in accordance with the data transfer command stored in the storage means by using addresses set in the plurality of counters. At this occasion, a counter identifier of a counter storing an address of a data transfer command to be executed is output to the DMA device. |
