Hi, I am offering my help for writing RTL, bench code in Verilog. I have experience writing code which is portable across various vendors (Altera, Xilinx, Lattice should also work). I should be able to read the Wiki on the weekend. As far as I was looking into various FPGA based logic analyzers, the main issue is not the FPGA code but the various devices used to interface to USB. I also have some spare FPGA boards, but not really logic analyzers specific board, so I am not sure if they fit.
Regards, Iztok Jeras On Tue, Apr 23, 2013 at 8:08 AM, Joel Holdsworth <[email protected]> wrote: > > > -------- Original Message -------- > Subject: Re: Demon Core > From: Ian Davis <[email protected]> > To: Joel Holdsworth <[email protected]> > CC: > > > Hi Joel, > > I've got a small site for the Logic Sniffer here: > http://mygizmos.org/ols/index.html > Please direct future contact to: [email protected] > > The Dangerous Prototypes website also has a support forum for Logic > Sniffer here: > http://dangerousprototypes.com/forum/viewforum.php?f=23 > > The demon core was released under GPL2 so feel free to leverage it on > those terms. > > Note the current Logic Sniffer fpga (XCV250E) is very full. Minor > changes should be fine, but adding anything major will doubtless be a > problem. It was designed for maximum logic density on Xilinx fpga's > only. Many of the design choices won't port easily to other fpga > vendors (like Altera). > > Now... not to dump on your idea, but you're going to face some > challenges. A couple points... > > First, the various vendors want to differentiate themselves. Assuming > similar advanced triggers, you should still expect differing numbers of > terms, range checks, edge checks, states, etc... Mostly because of > differing fpga flavors. Bigger parts = more features. > > Second, I based demon core on HP16550 style triggers. I doubt > HP/Agilent cares about an low volume open source project. Commercial > vendors however are viewed in an entirely different light. I have no > idea what HP/Agilent patents the demon core infringes upon -- assuming > any are still valid. Such concerns will give commercial vendors pause. > > In any case, I'll be happy to offer suggestions. Can't promise I'll > have the time to develop new logic though. > > Cheers! > -- Ian > > > > Joel Holdsworth wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> >> Dear Ian, >> >> Sorry to write to you on your work e-mail. I've been struggling to >> find any other contact details for you online. >> >> I'm writing to you from the sigrok open source project, which is a >> project about building an open source software suite to support all >> kinds of signal analysis devices including logic analyzers and MSOs. >> >> We are in the early stages of exploring the possibility of building a >> flexible/universal FPGA logic analyzer firmware. Our initial thoughts >> are being assembled here: http://sigrok.org/wiki/Fpgalafw >> >> - From my review of prexisting projects, it seems like your Demon core >> for the OLS is one of the more mature projects, so me may end up >> starting with this as a base, but I didn't want to do anything without >> first talking to you. >> >> I wondered if you would you like to participate in this effort in any >> way? Just hearing your thoughts or advice would be helpful, or if >> you'd like to get fully involved that would also be great. >> >> So let me know if you have any thoughts about this. >> >> Best Regards >> Joel Holdsworth >> >> >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v1.4.11 (GNU/Linux) >> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ >> >> iQEcBAEBAgAGBQJRdS40AAoJEIsWlGmq62IgWFYH/2l3UZoAkb4I402l2dgSc6S4 >> 92xwBN31grVGdrZsOxGqY6PdMI65bAV6dfwRZbvnO8m3jkzhOt5Y+rgSj9Eh0Srz >> 4fDTKJSuvPEd+O9SwnnpXJLW+zPgRDfG2Ru0tVdHHvFesHBrQraWU4Zsyr3Xh2eF >> BBAzkDq5Jhyec7/wjNm6xpSrQimN7nt/UjWTvslz+35B7LJaYulv5NGrdEmArG8o >> NecqW/iK4jP5KxZDWArx43cYCgGhRr+cGkBkx6w8Gi90EP5jQ9WjuDU5aEfdp9cX >> rgAio6f4wI5qNzZWySQjHr3cYx7Sghh2aOyukG9eK6Xh6hXfzz0VZYpcp6jDMcE= >> =Q2eF >> -----END PGP SIGNATURE----- >> >> > > ------------------------------------------------------------------------------ > Try New Relic Now & We'll Send You this Cool Shirt > New Relic is the only SaaS-based application performance monitoring service > that delivers powerful full stack analytics. Optimize and monitor your > browser, app, & servers with just a few lines of code. Try New Relic > and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr > _______________________________________________ > sigrok-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sigrok-devel ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
