i have problems with getting starting and a perl script who can simulate page replacement in FIFO,LRU and OPTIMAL.i want the script to have the possibillities to have numbers of simultanious,the size of the memory,the number of adresses which the refference string should generate.the number of frames the proces shall have access to.And how long the refferace string shold be.Has been sitting here for weeks and wonder what to do.