Electrical computers and digital data processing systems: input/ – Input/output data processing – Direct memory accessing
Reexamination Certificate
2007-04-03
2007-04-03
Fleming, Fritz (Department: 2181)
Electrical computers and digital data processing systems: input/
Input/output data processing
Direct memory accessing
C710S023000, C710S024000, C710S029000
Reexamination Certificate
active
10631590
ABSTRACT:
A method and an apparatus are provided for loading data to a local store of a processor in a computer system having a direct memory access (DMA) mechanism. A transfer of data is performed from a system memory of the computer system to the local store. The data is fetched from the system memory to a cache of the processor. A DMA load request is issued to request data. It is determined whether the requested data is found in the cache. Upon a determination that the requested data is found in the cache, the requested data is loaded directly from the cache to the local store.
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Fleming Fritz
Gerhardt Diana R.
Patel Niketa I.
Tkacs Stephen R.
Walder, Jr. Stephen J.
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