ISE14.7常见警告及处理方法

Xst:2677 – Node of sequential type is unconnected in block . 检查信号是否进行了声明,如果未声明,默认信号位宽为1bit。 WARNING:Xst:1290 – Hierarchical block is unconnected in block . It will be removed from the design. 查看RTL视图,检查模块连线情况,根据实际情况,将被优化的线路使用指令防止被优化即可。 WARNING:Xst:1710 – FF/Latch (without init value) has a consta