Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!nntp.club.cc.cmu.edu!micro-heart-of-gold.mit.edu!newsswitch.lcs.mit.edu!nntp.TheWorld.com!.POSTED!not-for-mail
From: jhallen@TheWorld.com (Joseph H Allen)
Newsgroups: comp.arch.embedded
Subject: Re: Open source FPGA toolchain ?, was: Re: Small, fast, resource-rich processor
Date: Mon, 30 Sep 2013 20:15:20 +0000 (UTC)
Organization: The World : www.TheWorld.com : Since 1989
Lines: 19
Message-ID: <l2cm4o$vql$1@pcls7.std.com>
References: <FcSdnVvNFdaFC63PnZ2dnUVZ5rOdnZ2d@giganews.com> <l2c5tb$nv8$1@dont-email.me> <l2chji$3fe$1@dont-email.me> <7x61tiayp8.fsf@ruckus.brouhaha.com>
NNTP-Posting-Host: shell01.theworld.com
X-Trace: pcls7.std.com 1380572120 32597 192.74.137.71 (30 Sep 2013 20:15:20 GMT)
X-Complaints-To: abuse@TheWorld.com
NNTP-Posting-Date: Mon, 30 Sep 2013 20:15:20 +0000 (UTC)
X-Newsreader: trn 4.0-test72 (19 April 1999)
Xref: csiph.com comp.arch.embedded:14013

In article <7x61tiayp8.fsf@ruckus.brouhaha.com>,
Paul Rubin  <no.email@nospam.invalid> wrote:
>Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> writes:
>> It doesn't stop me from looking, asking, and wishing however. :-)

>Some of the FPGA bitstream formats have been reverse engineered: a web
>search should find some info.  There are FOSS place and route tools but
>they don't generate bitstreams.

Another thing to point out: the place and route tools used by Xilinx and
Lattice were developed by NeoCAD- a company which reverse engineered the
Xilinx format in ~1991, did a better job than Xilinx's own tools of the time
(apr) and got bought by them.

-- 
/*  jhallen@world.std.com AB1GO */                        /* Joseph H. Allen */
int a[1817];main(z,p,q,r){for(p=80;q+p-80;p-=2*a[p])for(z=9;z--;)q=3&(r=time(0)
+r*57)/7,q=q?q-1?q-2?1-p%79?-1:0:p%79-77?1:0:p<1659?79:0:p>158?-79:0,q?!a[p+q*2
]?a[p+=a[p+=q]=q]=q:0:0;for(;q++-1817;)printf(q%79?"%c":"%c\n"," #"[!a[q-1]]);}