The zdt project's CVS data is in read-only mode, so the project may have switched over to another source-code-management system. To check, visit the Project Summary Page for zdt and see if the menubar lists a newer code repository, such as SVN or Git.
The CVS data can be accessed as follows.
You can run a per-module CVS checkout via pserver protocol:
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.adso
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.annotator
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.annotator.feature
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.browser
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.browser.feature
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.dictionary
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.dictionary.feature
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.feature
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.flashcard
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.flashcard.feature
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.help
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.plecodict
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.sound
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.supermemo
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P com.digitbit.chinese.rcp.updatesite
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P org.apache.log4j
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P test
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P zdt
cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/zdt co -P zdt tests
You can view a list of files or copy all the CVS repository data via rsync (the 1st command lists the files, the 2nd copies):
rsync -a a.cvs.sourceforge.net::cvsroot/zdt/
rsync -ai a.cvs.sourceforge.net::cvsroot/zdt/ /my/local/dest/dir/
If you are a project admin for zdt, you can request that this page redirect to another repo on your project by submitting a support request.