| 摘要 |
PURPOSE:To attain high speed transfer by making message transfer through a storing means that connects the body of a device and an interface. CONSTITUTION:Control information is transferred by direct control of microprocessors in the body 10 of the device and an interface 20 through the first or second storing means 31, 32. On the other hand, the third storing means 34 used for DMA transfer between memories in the body 10 of the device and the interface 20, the first DMA controller 12 that performs DMA transfer between the third storing means 34 and the first memory 31 and the second DMA controller 22 that makes DMA transfer between the third storing means 34 and the second memory 32 are provided and data are transferred from each microprocessor independently through the third storing means 34 by control by the first and second DMA controllers 12, 22. Thereby, messages can be transferred without using a common memory, and the transfer speed can be improved. |
