Richard Gadd has made a version fixed with a patched MasterDOS so they work with just 1Mb in slot 1. They have also been converted to work on B-DOS (and handle switching records if installed on HDD in the case of Top Gun) and with just 512Kb.
If external memory is detected they also use additional code to handle storing of the data files (as raw code) in external memory (in place of the MasterDOS RAM disk and LOAD operations).
