本代码用verilog而不是直接在nios中用ip核来实现HY57V641620FTP-6的读写，时序完全正确，从串口输出来验证的数据完全正确。附带说明和参考资料。希望对您有帮助。-This code is used instead of directly in verilog ip core nios used to achieve HY57V641620FTP-6 reading and writing, the timing exactly right, from the serial d