High-speed external memory system

Details High-speed external memory system High-speed external memory system

G - Physics

06

F

354/237

G06F 13/28 (2006.01)

Patent

CA 1178378

ABSTRACT OF THE DISCLOSURE In a high-speed external memory system which is equipped with a program mode for controlling a read/write operation of an internal control register and a memory of the external memory system by a central processing unit and a direct memory access mode permitting a direct access to a main memory, there are provided first and second location address registers. The memory addressing is performed by the first location address register in the direct memory access mode and by the second location address register in the program mode, whereby it is made possible to execute the read/write operation of the memory of the external memory system in the program mode during burst timing while in data transfer in the direct memory access mode, thus permitting high-efficiency data processing.

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