[Oberon] 30th anniversary of Oberon

[Nemo Nusquam]

On 01/03/20 09:43, rochus.keller at bluewin.ch wrote:
> @ Joerg Straube
>
> Very interesting, thank you.
>
>  From your findings I conclude that these languages are not compatible, i.e. source code written in Oberon 87 cannot simply be recompiled with an Oberon 90 compiler; there are different key words, statements, built-in procedures and import/export concepts.
>
> I wonder whether the Oberon system was first implemented in Oberon 87 and then migrated to Oberon 90, or whether the authors gradualy modified the language during implementation and the result was an Oberon system implemented in what later was specified as  Oberon 90.
I cannot speak as to what the authors implemented but Ulm implemented 
the Oberon 88 version (http://www.mathematik.uni-ulm.de/oberon/) before 
the Oberon 89 came out.

N.