Bert Status report 4/4

This week, I focused on the architectural refinement and continued validation of the system. I completed a comprehensive refactor of the CPU and PPU codebases to improve modularity and maintainability while ensuring timing stability on the FPGA. Following this refactor, I transitioned to the next phase of APU testing; by identifying and resolving specific logic discrepancies, I successfully passed several additional functional test cases. Looking ahead to next week, I will continue to drive the APU toward full compliance and begin implementing the memory mapper to expand cartridge functionality and overall system compatibility.