I got my hands on a Roland SC-55 at local recycling center. I changed the battery inside and checked the rom version when I got home and it was 2.00 rom version. it is not MK2 but MK1 with 2.00 rom if I have understood correctly. I read in other threads that rom 2.00 is not ideal for old games.

Anyone can tell in what games unit with rom 2.00 has problems with and what are games that it would still be good for if they exist?