HELLO; I use Quartus II web version 12.0 sp2 web edition to encode small program the order of TPs. when I compile the file itself with "Analyze Current File", everything goes well without error. But when I compile the whole project, I get this error: error (12007) top-level design entity "project" is undefined Thank you for helping me to solve this problem.
you have to select the toplevel vhdl file, right click -> set as toplevel
Iam using Quartus 12.1 web edition to compile a simple helloworld.v file and get the following error.Cannot find toplevel.v file.Please help. Error (12007): Top-level design entity "helloworld" is undefined
it worked thank you