Take a look at https://github.com/winterheart/quasi88

[john-at-charpa]

Hiya Mike. I recently found the project in the title of this and did a bit of tweaking. It now builds on macOS, uses SDL2, and has CMake support (so it will find the Frameworks or MacPorts or Brew installs of SDL2). As far as I can tell the support is complete and builds natively on my M1. You may want to give that build a try too. Clone head so you get my CMake fix for macOS.