| 摘要 |
PROBLEM TO BE SOLVED: To provide a data transfer method and device, reducing a CPU load for data transfer without changing a bus connection configuration of a CPU to avoid a situation wherein a main bus is occupied for the data transfer. SOLUTION: In a system wherein a host interface 14, a peripheral device interface 16 and an intermediate buffer 15 are present, a data transfer start function 151 notifies the peripheral device interface 16 of a data transfer start signal by using a one-unit data transfer completion signal outputted from the host interface 14, or notifies the host interface 14 of the data transfer start signal by using a one-unit data transfer completion signal outputted from the peripheral device interface 16, excludes interposition of the CPU 11, and realizes acceleration of the data transfer between a host computer 13 and an external memory 17. COPYRIGHT: (C)2006,JPO&NCIPI
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