verilog编写的异步fifo源代码，asyn_fifo.v为顶层，调用其他四个文件-asynchronous fifo prepared Verilog source code, asyn_fifo.v for top-level, call the other four documents

通过一个主时钟信号完成异步FIFO读写时钟信号的产生。编译通过实现功能。-Through a master clock signal the completion of asynchronous FIFO read and write clock signal generation. Compiler through the implementation function.

异步fifo在IC设计中，非常重要；是异步时钟域同步方法-Asynchronous fifo in IC design, is very important are asynchronous clock domain synchronization