Does anybody have a system with multiple Tulips working happily?  
If so, what sort of paramters are you using? 

I added a DE504 (quad Tulip) to a Miata last night.  I haven't managed 
to get it to do anything useful.  I haven't tried all that hard yet.  

I've got one link that's a point-point to a DUnix box.  That should 
be simple enough.  But Murphy never sleeps...