mixedsignal_2 will be the connectrules. It doesn't appear to be in the tar file - I had a quick scan around and couldn't find it elsewhere, but that's because it's using the mixedsignal_2 connectrules compiled into the connectLib that comes with IUS.
You should find the code in:
<IUSinstDir>/tools/affirma_ams/etc/connect_lib/crules2.v
If your IUS installation had the "configuration" step done after installation (which you really should do), and you have $AMSHOME pointing at your IUS installation root, the connectLib library should be found - it should be in the connect_lib directory. In the example, the cds.lib looks like this:
Code:include $AMSHOME/tools/inca/files/cds.lib
define worklib ./worklib
Using my configured installation, I was able to run "run-me" without doing anything else (I have $AMSHOME set too).
Regards,
Andrew.