模拟操作系统中的可变分区式内存管理,在模拟可变分区式存储管理时，采用最先适应算法实现主存的分配与回收，建立了已分配区表和未分配区表，等待队列。-Simulation of the operating system variable partition memory management, in a simulated variable partition storage management, the use of the first main memory algorithm to adapt