No.
However,
See Gary Campbell's web /blog article about doing this on the shopbot. Requires building a jig, but is way worth it. Everything else is an obvious cheat by comparison.
I've been doing this for years and the speed/accuracy is unmatched for all other jigs/methods I've tried during my career. (Katie jig, Woodrat/router boss)

Here it is :

http://www.shopbotblog.com/2008/08/d...d-mortise-jig/

jeff