[Oberon] Comparison of Oberon & A2; was Clock and calendar in A2.

Josef Sedlacek sedlacek at swissonline.ch
Fri Jan 7 18:42:26 CET 2022


As I know the idea of active object comes from J. Gutknecht. In his 
group exciting system and applications have been developed. The thesis 
of Pieter Mueller describes the lowest level of the system with process 
creation and management on multi core hardware. Patrik Reali has written 
a compiler which used the multi threading. Then the Bluebottle system 
came from T. Frey - a big collection of applications also with 
fundamental features for example sequencers in the space of graphical 
objects and there properties. Together with the Fox compiler from F. 
Friedrich the system has developed to the A2 system which even contains 
a system of active cells where the FPGA hardware is also a part. In the 
recent time F. Negele developed a multi threading system without locks. 
All of that is truly worth understanding.

I hope I didn't forget anybody and when then I'm sorry.

Best regards

Josef Sedlacek

Am 07.01.2022 um 17:42 schrieb peter at easthope.ca:
> From: Josef Sedlacek sedlacek at swissonline.ch  Mon Jan 3 17:26:14 CET 2022
>> A2 keeps the basic idea of Oberon. The OS runtime is quite different.
>> ...
> For a novice, comparison is significant and completely non-obvious.
> Therefore I've concocted =8~) the third FAQ.
> https://en.wikibooks.org/wiki/Oberon#FAQ
> With no expertise in the topic, I've relied upon understanding the
> thesis of P.J.M.  Questionable understanding.  Comments and
> suggestions welcome.
> Thx,                               ... P.L.

Company:  Radiar, Dr. J. Sedlacek, CH-7554 Sent
Tel: +41 (81) 860 06 60

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