The both the GOG and Steam rereleases run under DosBox, so I wouldn't see a reason why DosBox would be banned. I only own the GOG release so I don't know if the two rereleases have the same DosBox config (side note: mac GOG version uses boxer (based off DosBox, but not the same) instead of DosBox only adding to the config confusion).
The main thing of note about differing DosBox configs (at least in my option) is the number of cpu cycles. Having too many cycles per millisecond will soft-lock the game, as you will automatically be forced back up the attic stairs whenever you finish depending them (A problem I faced on the original classic mac release running on a g3 macintosh). Also the lower the cpu cycles the easier it becomes to preform a sprint, although this is banned on SDA (But no default clock-speed is set, so their ban seems unnecessary). So I guess my own personal stance on cpu cycles is do whatever works I guess ¯_(ツ)_/¯
Been interested in this game for a few weeks now and I'm a bit sad no mod has said anything in this thread. So thought I'd put in my two cents on the matter. I have a lot of other questions as to the rules of each run, but I guess that's a topic for another thread.
I tried playing on 3DO- emulators. But it is incredibly unstable. Dosbox looks better and works correctly.
