On Thu, Sep 10, 2009 at 17:09 +0000, Daniel Bolgheroni wrote:
> Hi,
>
> since Nick Holland touched on the DESIGN aspect in his e-mail regarding
> supporting OpenBSD, I think this article pretty much reflects the
> reality here.

>
http://www.osnews.com/story/22135/The_Problem_with_Design_and_Implementation
>
> Just think it's worth reading.

What came to my mind while reading this article is an almost 30yo
tale from the times of my first encounter with Unix release 6 on
PDP11.  I was studying CS at TU Berlin then and we had a OS Prof
Siggi Schindler (he's the reason why I use the 'y') who also
led a course on the ISO 7 layer model with practical applications.
AFAIR everything essentially boiled down to having a *precise
specification language*.  If you have such a language the only
thing left to do is building a machine that accepts this language
as it's programming language.  In this sense implementing a
specification in any existing programming language is equivalent
to implementing a subset of said machine on top of an existing
one.

Siggy
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