@mesprit It's just the way to make things easier. On barely every mashine BASIC will show Hello World with
10 print "Hello World"The CPU instructions for doing this are different so you might need a different BASIC interpreter for every "system".
But this is also very abstractive - but hope you get it.
Imho you can use a Pi0/1 image on a Pi2/3 revision but you will loose benefits for some optimized emulators. That's what @mitu said in his previous posting.