AROS on Raspberry Pi: the FOSS recreation of AmigaOS revived on modern silicon

AROS - Amiga Research Operating System, the free and open source reimplementation of AmigaOS - has just been ported to Raspberry Pi. The operating system that revolutionized preemptive multitasking on microcomputers in the 1980s is now alive on hardware costing just 35 euros.

A Shared Memory

We still remember the first time we saw an Amiga in action. While the PC world struggled with MS-DOS's command line, the Amiga displayed smooth color animations, played multiple audio tracks simultaneously, and handled multitasking effortlessly. It was magic—true preemptive multitasking on a consumer machine, back in 1985.

Forty years later, AROS—Amiga Research OS System, pronounced “A-ROS”—has arrived on Raspberry Pi. And we’re not going to pretend it didn’t put a smile on our faces.

AROS: The Grand Rebuild

AROS (Amiga Research OS) is an open-source project launched in the 1990s with an ambitious goal: to rebuild AmigaOS from scratch, API-compatible, without touching Commodore’s (later Amiga Inc.’s, then Hyperion Entertainment’s) original proprietary code. The result was meant to be a free system, portable to modern hardware, while remaining compatible with existing Amiga software.

For a long time, the project stayed in the shadows, running mainly on x86 and a few specific ARM architectures. Its port to Raspberry Pi—reported by The Register—marks a concrete milestone: the Pi is the world’s most widespread hobbyist hardware, with a community of millions of makers, retro enthusiasts, and developers.

What This Means Technically

AmigaOS was remarkable for its time in several ways:

• Exec: a microkernel with true priority-based preemptive multitasking, right from the Amiga 1000 (1985)
• Intuition: the window and screen manager, with the concept of “screens” that prefigured modern virtual workspaces
• Exec messages & ports: an elegant inter-process messaging system allowing lightweight synchronization between tasks via typed messages—a design that foreshadowed modern event-driven architectures

AROS reimplements all of this in C, without using any original code. Today on Raspberry Pi, that means you can run Amiga applications compiled for AROS directly on modern ARM hardware—without classical emulation.

The distinction is important: this isn’t UAE (the Amiga emulator) running the original 68000. AROS is a native rewrite. Software compiled for AROS runs in native code on the host processor (ARM, in the case of the Pi).

Why This Is Good News for the Retro Scene

The Amiga retro scene is surprisingly alive. Projects like the Vampire (FPGA accelerator for Amiga), MorphOS, AmigaOS 4, and AROS continue to draw passionate communities still developing new games and applications for the system.

The Raspberry Pi as a target platform opens doors: dirt-cheap cost, easy access for newcomers, and a rich ecosystem of peripherals (GPIO, audio, HDMI video) enabling creative setups. You can imagine AROS arcade cabinets, demos, art installations—the kind of things the Amiga demoscene has always loved.

To remember: AROS on Raspberry Pi is an invitation to rediscover what computing was like when design mattered more than benchmarks. For whom: Amiga lovers and OS history buffs. For everyone else: proof that free software can resurrect any architecture.