During December 2024, Aerkiaga focused on maintenance and cross-tool consistency for the YosysHQ/yosys repository, specifically targeting the Gowin FPGA synthesis path. They addressed a bug in the ALU MULT mode by refining the calculation of the S output, ensuring its behavior matched that of nextpnr and resulting in consistent multiplication results across synthesis tools. This work required a strong understanding of FPGA design and hardware description languages, particularly SystemVerilog. By aligning the Gowin target’s output with established toolchains, Aerkiaga improved reliability for Gowin-based builds while maintaining existing functionality, demonstrating careful attention to compatibility and synthesis tool interoperability.