On Thursday 05 May 2005 16:00, Lourens Veen wrote:
> So the upshot is that you can write your hardware description in
> Verilog, and simulate it using the free vpp, but if you want to
> actually put it into your OGP then you need the web pack for actually
> converting the net list into a bit stream that can be written to the
> chip. I can imagine hardware being developed by exchanging Verilog
> code over the web, and developers using free tools to simulate and
> test, and if there is at least one developer who can create
> "binaries" then it would be enough.

Sure it would.  But it should not take too much convincing for Xilinx to 
extend that privilege to all ogc owners, at least, owners of a card 
with the Xilinx part on it.  There are, of course, other options, a 
fact that I hope Xilinx will not overlook.

> I just found JBits (http://www-unix.ecs.umass.edu/~wxu/jbits/) as
> well, which if I understand correctly could replace the other bits,
> but it's rather limited and it doesn't support the 3S4000. Besides,
> being Java the question arises whether it will work with gcj and GNU
> classpath...

I happen to be dropping into the (former) Cygnus office tomorrow,  I'll 
give them the pointer and see if gcj handles it.  (Could even try it 
myself, or you could...)

> > > I'm probably in the minority here (and of course this won't be an
> > > issue for the ASIC) so don't let this weigh in too heavily, but
> > > I've gotten rid of all proprietary software, and I'm not going
> > > back. It's just way too much of a hassle.
> >
> > I am not sure at all that you are in the minority.  Time to take a
> > poll?
>
> Well I don't know too many hardware engineers, so I have no idea, but
> most people I know of in the software world are more like Linus (I
> don't care if it's Open Source as long as it works) than like RMS (I
> don't care if it works as long as it's Free Software). So I figured
> most interested people would be okay with a proprietary-but-gratis
> Xilinx WebPack. And with Icarus at least half of it will be free.

Well, last time I checked, you, me and Timothy were doing a lot of the 
actual grunt work.  And we all happen to believe in the free aspects of 
the project.  Mere coincidence, or?

> Anyway, is there an alternative option? A poll can't hurt I suppose,
> but what if everyone demands a fully free toolchain?

I don't have a problem with the Xilinx bitstream converter being 
non-free, after all it is tied to these specific chips.  I don't 
understand why it makes sense for Xilinx to restrict this code or the 
specifications underlying it, but I can live with that, particularly 
since the only alternative is to forget about the Xilinx part.

Regards,

Daniel
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