This is a max patch that I have been working on for a while. There is an ongoing discussion on the C74 forums about the lack of fully featured synth examples, so I thought I would polish this up and put it out there. It's loosely modelled on a Casio CZ101 and uses phase distortion synthesis, which is a kind of FM. The UI is purely functional. It doesn't use any externals.
Free to use in non-commercial projects.