Post-Efabless Silicon on SkyWater, GlobalFoundries, and IHP (Tim Edwards) @FOSSiFoundation

Uploaded May 2026 | Updated September 2026, 3 weeks ago

After the shutdown of Efabless in February 2025, Cadence ran their first shuttle on Sky130 with a generous invitation to the open source silicon community. I submitted five chips, to recover some of the silicon lost in the Efabless shutdown. Subsequently, I ported "openframe" designs to GF180MCU on Wafer.Space and SG13CMOS5L on IHP. I will present on challenges of the tapeouts, resolutions, and upcoming work.

Post-Efabless Silicon on SkyWater, GlobalFoundries, and IHP (Tim Edwards)

Project Arrakeen: One API to rule all PDKs (Staf Verhaegen)

Realising low cost and simple IC design - ChipFoundry and ChipFlow collaboration (Rob Taylor)

SERV - A quick talk about a small CPU (Olof Kindgren)

UMI: Universal Memory Interface - Andreas Olofsson (Latch_2024)

Sustainable open silicon communities (Frans Skarman)

Full Custom - Drawing Transistors The Hard Way (Nanik Adnani)

Resizing Your Expectations: Mastering Timing Closure with OpenROADs Evolving Optimizer (M. Guthaus)

RF Front-end receiver design for 2.4GH/5GHz WiFi application - Jabeom Koo (Latch_2024)

DRAM simulation with the simulator DRAMSys (Matthias Jung)

Next big step for Verilator: towards four-state logic and UVM compatibility (Krzysztof Bieganski)