Unified DMA

Electrical computers and digital data processing systems: input/ – Input/output data processing – Direct memory accessing

Reexamination Certificate

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Details

C710S001000, C710S026000, C710S031000

Reexamination Certificate

active

07496695

ABSTRACT:
In one embodiment, an apparatus comprises a first interface circuit, a direct memory access (DMA) controller coupled to the first interface circuit, and a host coupled to the DMA controller. The first interface circuit is configured to communicate on an interface according to a protocol. The host comprises at least one address space mapped, at least in part, to a plurality of memory locations in a memory system of the host. The DMA controller is configured to perform DMA transfers between the first interface circuit and the address space, and the DMA controller is further configured to perform DMA transfers between a first plurality of the plurality of memory locations and a second plurality of the plurality of memory locations.

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