设计一个虚拟存储区和内存工作区,并使用下列算法计算页面失效次数.

（1）　　进先出的算法（FIFO）

（2）　　最近最少使用的算法（LRU）

（3）　　最佳淘汰算法(OPT)

　　在本实验中，页地址流长度为320，页面失效次数为每次访问相应指令时，该指令所对应的页不在内存的次数。

-Design of a virtual memory storage area and work area, and use the following algorithm for calculating the number of page failure. (1) into the algorithm, first-out (FIFO) (2) at least recently used algorithm (LRU) (3) the best out of algorithm (OPT ) In this experiment, the page address stream length of 320, the page number for each failure to visit the corresponding instructions, the instructions corresponding to the number of pages is not memory.