[time-nuts] CPLDs for clock dividers

[paul swed]

Its kind of funny. I have downloaded the software for Altera. Thats was a
nice simple process and will install. I will try to figure out the tar file
issue with Xilinx.
But all said and done I could have hand wired dividers hours and hours ago.
I guess with humor education can be painful.

On Fri, Feb 5, 2010 at 7:31 AM, Bob Camp <lists at cq.nu> wrote:

> Hi
>
> All of these packages have a *lot* of crazy optimizations you can do. The
> defaults work pretty well in Quartus with one exception.
>
> They are in the process of moving from their "classic timing analyzer" to
> another timing analyzer (TimeQuest?). Right now the classic analyzer is
> disabled by default, but it still sets it's self up ok for simple stuff. By
> default you will get error messages about "timing driven synthesis" unless
> you do a timing constraints file. If you just go to the timing analyzer
> section and flip over to the classic analyzer,  the messages will go away.
> You can go back and fiddle with timing files after you have the basic design
> in and running.
>
> The other alternative is of course to do the timing file first and then put
> in the design. Nothing wrong with that, if its the work flow you prefer.
>
> Bob
>
> On Feb 4, 2010, at 11:12 PM, paul swed wrote:
>
> > I used the link and the file downloaded reasonably
> > Install tomorrow
> > Thanks
> >
> > On Thu, Feb 4, 2010 at 8:31 PM, Luis Cupido <cupido at mail.ua.pt> wrote:
> >
> >> You may try Altera. Quatus web 9.1 is 1.5Gb and painless to setup.
> >>
> >>
> https://www.altera.com/support/software/download/altera_design/quartus_we/dnl-quartus_we.jsp
> >>
> >> lc.
> >> ct1dmk.
> >>
> >>
> >> paul swed wrote:
> >>
> >>> I also did the web install and need to go back and add more options.
> >>> How painful. Enough to drive me away from this project
> >>>
> >>> On Thu, Feb 4, 2010 at 6:26 PM, Gerhard Hoffmann <dk4xp at arcor.de>
> wrote:
> >>>
> >>> paul swed wrote:
> >>>>
> >>>> Well not having a lot of luck with the xilinx wise application.
> >>>>> Its a 6.5 GB tar and after a good 5 hr plus download the tar doesn't
> >>>>> open
> >>>>> with zipgenious
> >>>>> But 6.5 GB to work a cpld. Seems crazy to me.
> >>>>>
> >>>>>
> >>>>> I also had no luck two weeks ago with the single file download.
> >>>> The web install worked ok, however. It downloads many smaller
> >>>> files. I think my very slow DSL connection is to blame here.  :-(
> >>>>
> >>>> Two years ago, when I still lived in Berlin, Xilinx used to have one
> of
> >>>> the
> >>>> few servers that were capable to max out my (then) 16 MBit/s link.
> >>>>
> >>>>
> >>>> @ Ulrich:
> >>>> Did you see a show stopper with the Xilinx Coolrunners?
> >>>> I have used them before and liked them. Really fast and they
> >>>> consume close to no power. I'd like to deploy them for something
> >>>> jitter-critical very soon.
> >>>>
> >>>> regards, Gerhard dk4xp
> >>>>
> >>>>
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