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

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.