|
请教s3c44b0x的cache问题<br />请教s3c44b0x的cache问题<br />数据手册的191页上写道:<br />Cache Replace Operation<br />After a system is initialized, the value of CS is set to "0000", signifying that the contents of set 0, set1, set2 and set<br />3 cache memories are invalid. When a cache fill occurs, the value of CS is changed to "0110" at the specified line,<br />which signifies that only set 0 is valid. When the subsequent cache fill occurs, the value of CS will be "0011" at the<br />specified line, which represents that contents of both set 0 and set 2 are valid. When the subsequent cache fill<br />occurs, the value of CS will be "0101" at the specified line, which represents that contents of set 0, set 1, and set 2<br />are valid. And succesive cache fill make CS "1000" at the specified line, which represents that all caches are valid.<br />========================================================================<br />我不理解的地方:<br />1. CS是什么东西?没有解释啊.<br />2. 为什么CS的内容为0110时,选择set 0,有什么规律或原则?<br /><br /><br />请教各位了. |
|
楼主
