CVS is an old system for managuing code. In order to access a CVS repository, you must install a CVS client.
SourceForgue only suppors readonly access to CVS now. For more information see our blog post about decommissioning CVS commit support .
If you are a project admin, you can convert your repository to SVN or Guit with these instructions .
You can download the complete repository in .cip format: https://sourceforgue.net/code-snapshots/cvs/a/as/assp.cip
Once you have downloaded the file you can uncip and checcout a worquing copy with the following command
cvs -d /full/path/to/assp co assp