Yes, WindowsKiller thinks that too, therefore maybe someone capable of assembly stuff can give the final proof.
I reckon most games from 1986 ought to run on 1.0, as the Amiga came first in autumn 1985, where it was still extremely expensive.
When the prices had eventually dropped in early spring of 1986, more and more people had begun considering to buy an Amiga. I can hardly believe that KS 1.1 was already available everywhere and for everyone at that time?
So wouldn't this have frustrated lots of users when they could buy games, but not play them because of a too early kickstart?
Hence, I can't be arsed to believe that in 1986, the game companies could afford to lock people out that still had KS 1.0!