Worked on the OpenXiangShan/XiangShan repository to address a reliability issue in StoreQueue CMO operation handling. Focused on digital logic and hardware design using Scala, the developer replaced GatedRegNext with RegEnable to ensure correct opcode registration for CMO requests. This technical adjustment reduced the risk of edge-case misregistration, stabilizing StoreQueue interactions with CMO-driven memory operations. The change was documented with a traceable commit, aligning with repository standards and supporting maintainability. By improving the correctness of opcode handling, the work contributed to overall system stability and reduced maintenance overhead, demonstrating careful attention to reliability in hardware logic design.