对早期的一种小巧的模拟器jns的官方文档的翻译版。对研究模拟器原理有帮助，这是我个人的翻译，有错误欢迎指正。-Early simulator of a small jns translation of the official version of the document. Simulator to study the principle of help, this is my own translation, there is an error please correct me.