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Aegis – open-source FPGA silicon

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Why This Matters

Aegis represents a groundbreaking shift in FPGA development by offering a fully open-source silicon design, from fabric architecture to toolchain, enabling greater transparency, customization, and accessibility for the tech industry and consumers. This initiative could accelerate innovation, reduce costs, and foster a more open hardware ecosystem in FPGA technology.

Key Takeaways

Aegis

Aegis is a fully open-source FPGA, from the silicon up.

Existing open-source FPGA efforts either reverse-engineer proprietary architectures (Project IceStorm, Apicula) or build tooling around closed silicon (Yosys, nextpnr). The silicon itself has always been proprietary. Aegis starts at the other end: the fabric design is open, the toolchain is open, and the path to real silicon goes through open PDKs and shuttle services like wafer.space.

The project generates parameterized FPGA devices with LUT4, BRAM, DSP, SerDes, and clock management tiles, along with everything needed to synthesize user designs onto them and tape out the fabric itself to a foundry.

Devices

Aegis Terra 1

The first Aegis device, targeting GF180MCU via wafer.space.

Resource Count LUT4 ~2880 BRAM (128x8) 128 tiles DSP18 (18x18 MAC) 64 tiles I/O pads 224 SerDes 4 Clock tiles 2 (8 outputs) Routing tracks 4 per edge

nix build . # terra-1 # Generate IP (SV, JSON, chipdb, techmap) nix build . # terra-1-tapeout # Full RTL-to-GDS for fab submission

Toolchain

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