- If you are not using a custom disc or tape loader then during loading you will need to preserve the firmware memory regions. The easiest thing to do is start the game lower in memory (&0040), use the default screen at &c000-&ffff, and then once loaded copy data over these areas (provided you are not doing furthur loading/saving).
=====Investigation into a Speccy Port=====
Arnoldemu attempted a Speccy Port in 2022-2023 and the result is 'Mayhem'. The documentation with this game has comparisons and describes the decisions made when making this conversion. You can read about the elements of this journey.