- Initialized the snes_tile8 structure to zero in UnpackBppTile for safety. - Reordered loops in UnpackBppTile to process rows before columns, improving readability. - Corrected bit manipulation logic in both UnpackBppTile and PackBppTile to ensure accurate color value handling. - Enhanced test cases for 2bpp and 4bpp tile unpacking to validate expected results, improving test coverage.