设计了一个具有双时钟信号，双复位信号的FIFO，用于FPGA中的数据缓冲，RAM的定义是参数型，可以根据自己的需求，修改此参数，完成RAM的容量扩展。程序中有详细的说明-Designed a dual-clock signal, double reset signal FIFO, for the FPGA in the data buffer, RAM is defined as parameter type, according to their needs, and modify this