| 摘要 |
The memory space (118) accessible by a processor (28) is partitioned such that multiple memory regions map to the same physical memory. Processor accesses in one of the regions (120, 124) are regarded as normal accesses, and are satisfied from the memory or a read buffer (72, 74). If memory access is required, the processor is stalled until the desired data is returned from the memory. Processor accesses to the other region (122, 126) are regarded as requests to prefetch the data from the memory and place it into a read buffer without stalling the processor. The processor continues program execution while the data is being prefetched. At a later point in program execution, the processor requests the data via the first region. The data likely resides in the read buffer, and can therefore be provided to the processor quickly, resulting in improved performance.
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