UI System Requirements
 ----------------------------------------------------------------------------

        - IBM XT, AT, PS2 or compatibles
        - MS DOS 2.1 or higher
        - Floppy drive disk. Comes on 5. inch floppies but can
          be converted to 3.
        - 512K RAM; 640K recommended; does not support EMS
        - approximately 1.5 mg. disk space
        - supports most monitors; EGA not required (but it's more
          fun!)

        - 640K is mandatory to use this guide while using UI