Purpose of this program is making possible work with diverse versions of TOS without changing (EP)ROM's in machine. 1 MB of RAM is minimum requirement for use, because used TOS is placed in RAM, and it decreases available RAM for 192-256KB.
Program supports following TOS versions:
TOS 1.00 US, UK and German,
TOS 1.04 US, UK and German,
TOS 2.06 US, UK , German and UK 'Supertos' .