Comment by blkhawk

Actually it was very much a legal thing. For example i can point to GEM that had to have its windows glued down because of this. See GEM 1 https://en.wikipedia.org/wiki/GEM_(desktop_environment)#/med... vs GEM2 https://en.wikipedia.org/wiki/GEM_(desktop_environment)#/med...

Apple sued Digital Research and later Microsoft when they enabled overlapping windows for windows 2.0.

Also lol a 286 with 256kb of ram - that is a very very weird combination you would never see in a desktop. Generally early IBM PC compatibles might have just 512KB of ram but around 1985 and later 640KB really became the norm even on 8088 and 8086 based systems. I am not counting stuff that really didn't get anywhere like the PCjr and that thing was much earlier in 1983.

286 based systems once they became more common started a 1mb RAM.