Communication control device and a communication system using th

Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation

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710 22, 710 52, 710 53, 710 71, 710128, 710129, G06F 1300

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active

059999993

ABSTRACT:
The communication control device allows a plurality of data items to be transferred to and from external devices, such as a CPU and a memory, via an external bus having a different data bus width in DMA (direct memory access) transfer mode. DMA transfer is controlled by the DMA controller provided in the communication control device. The DMA controller produces a signal indicating that a plurality of data items are continual.

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