I just started a GitHub repository that includes some modified source to Mark Sims’s excellent Lady Heather’s GPS Disciplined Oscillator Control Program
Most of the changes made were a port to SDL so it played nicely fullscreen with the Mac’s multiple screens and so I could do some trick scaling with the window contents to permit running a bunch of them at once and still see everything.
Previously, the MacOS version required X11, and there are all sorts of weird things that occur with X11 regarding full screen (such as, can’t actually get a real top to bottom full screen, can’t restore to the previous window size, etc.)
Anyhow, mostly fully working except for writing of screen shots, though I’ll have that done soon as well.
A zipped up binary with the required SDL dylib can be downloaded here.
Keep in mind that this is not a nice Mac app bundle – it’s a command line program that should be launched from the terminal.