Sam Castleberry developed a runtime assertion mechanism for the OpenXiangShan/Utility repository, targeting the detection of SRAM read-write conflicts in operational modes that prohibit such behavior. Leveraging skills in digital logic design, embedded systems, and hardware design, Sam implemented the AssertionFail feature in Scala to block invalid memory interactions before they could propagate to the SRAM macro. This approach reduced the risk of silicon misbehavior and streamlined debugging. The work included updating and expanding the test suite to validate the new assertion across various modes, resulting in improved runtime safety, enhanced test coverage, and greater maintainability for the Utility component.