Worked on enhancing the Spice86 emulator by implementing comprehensive DOS file date and time attribute handling. Focused on C# and emulator development, the work involved creating an INT 21h 57h interrupt handler to support both retrieval and modification of DOS file attributes. Utilities were developed to convert between legacy DOS date/time formats and modern .NET DateTime objects, ensuring seamless integration within the emulator’s workflow. The new handler was wired into the interrupt dispatch table, enabling accurate file attribute management for DOS applications. This feature deepened Spice86’s DOS internals support, leveraging bitwise operations and robust integration with the existing codebase.