用HDL语言编写的通用fifo源码，通过对fifo的宽度和深度进行配置，可以产生我们所需要的fifo，还包括fifo的测试程序和仿真Makefile脚本-with HDL prepared by the General fifo source, fifo of the breadth and depth configuration, can produce what we need fifo. also included fifo testing procedures and simulatio