Method and apparatus for performing direct memory access (dma) byte swapping
CA 2249389 C · Owner: Micron Technology, Inc. · Inventors: Sriti, Mohammed
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for performing byte swapping using direct memory access (DMA) controller (101) is provided. In a computer system a DMA , controller for a peripheral component is coupled to system memory (20) via a bus (40). The DMA controller receives a command pointer (220) to initiate a memory access operation. The command pointer specifies the location of the first DMA command in a command list (24) to be executed by the DMA controller. Each DMA command includes an address word giving the starting address and length word indicating the number of data words to be accessed in memory. Because the data stored in memory is double-word aligned the two least , significant bits of …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 4, 1997 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2019.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.