I am working on a port of neslisp to the commodore 64. Commodore64 and nes (nintendo entertainment system) have the same processor to program for. You can compile it for both these architectures with cc65 (http://www.cc65.org). I have placed the project at Sourceforge. Here's the link : https://sf.net/projects/neslispc64

The supported lisp syntax is still the same, keywords are stored in the moose.config file. Read the README for more information.