Thanks. There is actually also an i386 version of the system in the repository, where I modified the kernel so it runs with Multiboot, making installations much easier. An essential achievement for both platforms were the stand-alone tools, i.e. I can compile and link the whole Oberon system on Linux or any other platform (see https://github.com/rochus-keller/op2/). I even implemented an IDE which I used for the development (see https://github.com/rochus-keller/activeoberon/).

Cool. Is macOS (Apple Silicon) also supported?

If not, well there's another reason to have a Linux VM ready :)

Technically yes, but since Apple locked down their OS completely, you might have to compile the tools yourself on your machine so the OS allows them to start at all.