DMA controller, method, information processing system, and...

Details DMA controller, method, information processing system, and... DMA controller, method, information processing system, and...

2005-09-29

2009-12-29

Tsai, Henry W. H. (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S026000

Reexamination Certificate

active

07640375

ABSTRACT:
In a DMA control method in which a DMA controller transfers data in memory to an input/output device in accordance with the control information which is provided by a processing device to a DMA controller, a processing device implements a step in which the processing device sets an information block comprising the control information and the data in the memory; a step in which address information of the information block is provided by the processing device to the DMA controller; a step in which the DMA controller reads the information block from the memory based on the address information and extracts the control information; and a step in which the DMA controller transfers the data in the information block to the I/O device based on the control information.

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