这是一个32位微处理器的模拟程序，属于原型，实现的功能有限。POWPC620处理器的结构，以及体系结构，实现了指令的4发射、乱序执行。-This is a 32-bit microprocessor simulation procedures belong to the prototype, the implementation of limited functions. POWPC620 processor structure, as well as architecture, implementation of the Directive 4 launch, out-of-order implementation.