Processor controlled DMA controller for transferring instruction

Details Processor controlled DMA controller for transferring instruction Processor controlled DMA controller for transferring instruction

1989-01-25

1991-03-19

Lee, Thomas C.

Boots, shoes, and leggings

3642286, 3642423, 3642601, 3642629, 364263, G06F 1516, G06F 1338

Patent

active

050016245

ABSTRACT:
A data processing system including a processor that executes a plurality of instructions including at least one instruction that requires an external operation to be performed. The processor provides information for this external operation instruction to an external device and continues to execute instructions that do not require the results from this external operation. The external device receives the information from the processor, performs the external operation and provides the results to the processor. A further aspect of this data processing system is an interface that is interconnected between the processor and the external device. The processor provides the external operation information to the interface. The interface in turn provides the information to the external device and concurrently accesses data from the memory that will be required by the external device for performing the external operation.

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