I think this just a standard Raspberry Pi Linux distro with an emulator for "Project Oberon 2013" preloaded.<p>Oberon has a tortured version history, so it takes a bit to explain what "Project Oberon 2013" is, but it's basically representative of Oberon in a very early stage of development.<p>This version was originally described by Wirth in his 1992 book "Project Oberon: The Design of an Operating System, a Compiler and a Computer". After his retirement he prepared a new edition, which came to be known as "Project Oberon 2013". For this edition he switched out the "computer" part -- the original used the now extremely obscure NS32000 CPU, the new edition used a custom RISC architecture implemented on an FPGA. But otherwise than this "implementation detail", the system was unchanged.<p>(And of course, given the FPGA source code, it's easy to build an emulator.)<p>But if you try this and it feels primitive -- it is. Later versions of Oberon got much fancier.