Re: [f-cpu] Re: Project short description

[Juergen Goeritz <goeritz@oekomm.de>]

On Fri, 7 Sep 2001, nicO wrote:

> Juergen Goeritz a écrit :
> > 
> > On Wed, 5 Sep 2001, nicO wrote:
> > >
> > > Personnaly i could see it when you want to create a product but a piece
> > > of it is to big for you or you didn't want to spend to much money for
> > > it. Your 'added value' aren't this part but the whole system. So you
> > > decide to use the GPL to be help to design this none-so-important part
> > > (from money back point of view). But then you use it to develop and sell
> > > your product. As IBM : devellop Linux to sell even more computers.
> > 
> > To my experience it is the other way round. Most new software
> > was derived from a preexisting work. IBM did take Linux because
> > it was already what it was - a very stable system. It is no
> > use, even for a big company, to develop the same thing anew,
> > maybe except you already have a very big customer base. IBM
> > lost their (PC) customer base already two times. I assume they
> > also will manage that a third time...
> > 
> 
> So you could see the developpement of the LEON. Europeen Space compagny
> can't develop a cpu them self, so ESA payed for one. 

No, ESA had a processor on SPARC V7 architecture licensed before
which started to be too slow and inflexible for new developments.
The idea now is to be able to build 'system on chip' designs for
space. That's why they started to develop a compilable source
code processor, the LEON. To be compatible to the old ERC32 they
decided to stay with SPARC V8 architecture.

There have been other designs, like Thor, that have not been
used because of less performance as far as I know. 

JG

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