Eddie
The Freescale serial monitor is a good starting point - maybe it will do all that you require (?).
See the following for software and an application note on how to load it to an NE64 with a build-it-yourself BDM (using the NE64 DEMO board):
http://www.utasker.com/docs/documentation.html (under projects and application notes).
Regards
Mark Butcher