| 摘要 |
<p>A data memory system includes a main memory and a copy-back cache. Each line of the cache has a context tag, which is compared with a current context number to test whether the line contains the required data. The cache can be flushed simply by resetting all the context tags to a null value, which ensures that the data cannot be accessed. However, it remains physically in the cache, and will eventually be copied back to the main memory when it is about to be overwritten with different data or when the physical address is next used.</p> |
