General Description: After I create a component on a site that has a "Do Not Allow Components to be Placed at This Site" constraint on it, the following warning is reported:
"NG:FPGAEditor:251 - Cannot place component "$COMP_#" at site "CLB_R#C#.S#" -- it is prohibited."
解决方案
The tool should not allow a component to be added to a prohibited site.
To work around this issue, add the component to another site.