My original AMOS map editor called Turbo Plus Scene Editor that I wrote in AMOS BASIC when I was a wee lad of 20 years old.
These are Blitz Basic and AMOS files.
The original version was called "Game Mapper" and was written (or maybe re-written...can't remember) in Blitz Basic. In the folder "SceneEditor_Demo" is the AMOS version.
It's technically the "DEMO" version that is on the disk. But a short edit of the code (at the top) will remove the demo restrictions. :-)
Anyway, these are not ASCII text files so you will need AMOS or BB to view them. If there is any demand, I may fire up the Amiga and save the files out as text (I may do that anyway).
Let me know if you have questions!