采用查询方式将下列测试电文送到辅串口发送器，经过内部自环接受，显示在屏幕上，通信速率选用4800波特，无校验传输，一桢字符有8个数据位，2个停止位，按下任意键时测试结束(2)　　虚页的个数可以事先给定（例如10个），对这些虚页访问的页地址流（其长度可以事先给定，例如20次虚页访问）可以由程序随机产生，也可以事先保存在文件中。

(3)　　要求程序运行时屏幕能显示出置换过程中的状态信息并输出访问结束时的页面命中率。

-Query mode using the following test message to the serial transmitter Des internal self-Central acceptable, displayed on the screen, choose 4800 baud communication rate, no parity transmission, a character-ching, 8 data bits, 2 stop place, press any key at the end of the test (2) the number of virtual pages can be given in advance (for example, 10), access to these virtual page address of the page flow (the length can be given in advance, for example, 20 virtual pages to visit ) can be randomly generated by the procedure can also be pre-stored in the file. (3) the requirements to run when the screen shows the process of replacement of the state information and the output end of the visit of the page hit rate.