METHOD AND DEVICE FOR CONTROLLING DMA TRANSFER

摘要

PROBLEM TO BE SOLVED: To provide a system that allows data in DMA transfer to be referred to and reduces the waiting time of a CPU in DMA transfer. SOLUTION: The system comprises a detection means 12 to detect a request from a CPU 70 for reference to the data of DMA transfer object and uses a device 10 for controlling DMA transfer, that lets the CPU 70 refer to the data for which the request for reference has been detected prior to DMA transfer during execution. COPYRIGHT: (C)2004,JPO