Rochus Keller has ported Oberon System 3 (ETH Oberon), a modular multitasking OS developed at ETH Zurich, to run natively on the Raspberry Pi 3B. A ready-to-flash SD card image is available. The port also works on Raspberry Pi 2B (v1.2+) and Zero 2, chosen for their shared hardware architecture and long production lifespans (3B until at least 2028, Zero 2 until at least 2030). Migration to Raspberry Pi 4 is also considered feasible.
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