更改原理图后,进行正标,提示错误:there are errors .see logfile.BackAnnotation.txt.logfile中提示如下:presumably,this design has never been forword annotated in the ICDB environment.BackAnnotation can not proceed。& c# [- s4 z$ w7 ^ ^
请问一下,这是什么原因,应该怎么解决呢?谢谢!/ r/ J0 N Z8 `1 Z