Adafruit iconAdafruitSep 29, 2026

Onyx: a multi-process OS for the Raspberry Pi 4, built on Circle

Developer stephaneweg posted Onyx on the Raspberry Pi Forums, a homemade multi-process operating system for the Raspberry Pi 4 in AArch64, using Circle as its hardware layer. Every app runs in its own translation tables with its own ASID, calls into a kernel API table, and gets its own window.

Onyx: a multi-process OS for the Raspberry Pi 4, built on Circle

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Developer stephaneweg posted Onyx on the Raspberry Pi Forums, a homemade multi-process operating system for the Raspberry Pi 4 in AArch64, using Circle as its hardware layer.

Every app runs in its own translation tables with its own ASID, calls into a kernel API table, and gets its own window.

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Developer stephaneweg posted Onyx on the Raspberry Pi Forums, a homemade multi-process operating system for the Raspberry Pi 4 in AArch64, using Circle as its hardware layer. Every app runs in its own translation tables with its own ASID, calls into a kernel API table, and gets its own window.

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