delorie.com/archives/browse.cgi   search  
Mail Archives: geda-user/2016/08/02/21:04:27

X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=20120113;
h=mime-version:in-reply-to:references:from:date:message-id:subject:to;
bh=7fI7swexGH3DpfFybYu5BmsvW0p+aaq74PW3A+0BKgE=;
b=rVGMTbwz9CYd27I6zv4gLUcgMkon3RRLzswFDUWoFPi9olO97ap4YZncIeYrciZ0M1
HyEL8tln1J4ZpKyeZTtWJ8C858P7s+XDL0ynHmAY5C6RuZWXHWtLJuyV/0U/801IFqHr
l4n4ZFONqt84rStKoF0gih6jKWv7TqpEfLwn4/V8W6zUsZMqgDI7Np7bxy6fln+K0N1S
yO624cNZph8qnyAeF2GUtWXJsPHgASzySJxWrC3HrDKD1kxoPvWkXf7z9QdGA2bY/DiE
a5LYVz6uEGmSGnvR7o0kGfKnM9ogX5K4kF6gfuqbP4yDsxaZSeAtBQ4Jg2ekWtUm8U39
wsDA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=1e100.net; s=20130820;
h=x-gm-message-state:mime-version:in-reply-to:references:from:date
:message-id:subject:to;
bh=7fI7swexGH3DpfFybYu5BmsvW0p+aaq74PW3A+0BKgE=;
b=Ohea+dkN4G986XRsaZfbTLY0UOKa1twxVVQrrM6opNu/0lrB3UN+US/EAjQNQEj+Ty
+6Sc0F2IUFKXUbw4YyAx9vTUZ02/lWrAduREnAoEdh0L6G/8EDvKpU3QcqrZebMI+jwY
0K0/G0dIir5xMdI1q6o7EHdAw1Vr/ZoGUDEz90ZBIkVdLTpRRqT5qKo3W98l0jLUoK7b
mos4uPkr1j27LUjUeV53CORo2AI6i0BR4zsKF8xXi2Thd8qApIno/COD/rI/0z4Sf7ns
jt5Q41S+E5FUC7o/xf4dSbPiXnbU2T2nncpqIopcOioPRN45iRB1J/XPKW06X9fl2PNz
qjqA==
X-Gm-Message-State: AEkooutGQyYRy8dxDFEj+pAaze6WwAAxbg7uRXKgTRRqfLtoUIwA59E9RFRYei+5IQRfOEEqpu8pC9rKY13qgg==
X-Received: by 10.25.201.203 with SMTP id z194mr17733455lff.192.1470186192185;
Tue, 02 Aug 2016 18:03:12 -0700 (PDT)
MIME-Version: 1.0
In-Reply-To: <20160802233304.GA2086@recycle.lbl.gov>
References: <23abdc31 DOT 72365e7a DOT 572529a9 DOT 212e2 AT o2 DOT pl> <a5562efe70ac4b83b066facd19a46167 AT gwp>
<20160801162742 DOT GA27552 AT recycle DOT lbl DOT gov> <20160801184707 DOT 7b3dda2d3c0d13e103a5ec59 AT gmail DOT com>
<a7acaf21-df0d-d209-d053-fcc470762ea3 AT ecosensory DOT com> <s6n60rkz3g8 DOT fsf AT blaulicht DOT dmz DOT brux>
<201608012000 DOT u71K0pN2001967 AT envy DOT delorie DOT com> <CAHUm0tO1-ke5jcKsqYstiajENUis2f=nn5=jZkaNQ+HGDVg6zw AT mail DOT gmail DOT com>
<CAM2RGhSxV=-czyN-vNRRzy8r1OErBcYSdT+uZ=-R86bsWyRcdg AT mail DOT gmail DOT com> <20160802233304 DOT GA2086 AT recycle DOT lbl DOT gov>
From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date: Wed, 3 Aug 2016 01:03:11 +0000
Message-ID: <CAM2RGhRAFHxuUL4jBo5Yuqta2rMBVwDepi5tQ1-zR56UM6BKWQ@mail.gmail.com>
Subject: Re: [geda-user] Wilkinson splitter - how to implement and use?
To: gEDA users mailing list <geda-user AT delorie DOT com>
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com

On Tue, Aug 2, 2016 at 11:33 PM, Larry Doolittle
<ldoolitt AT recycle DOT lbl DOT gov> wrote:
> Evan -
>
> On Tue, Aug 02, 2016 at 04:47:05PM -0400, Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
>> On Mon, Aug 1, 2016 at 6:44 PM, Erich Heinzle (a1039181 AT gmail DOT com)
>> [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>> > If pcb were modified to honour the flag, I could easily add a "nodrc" flag
>> > as discussed to the non-pad line element outputs of the utility.
>> I think we need something more subtle than nodrc. Having DRC turned
>> off for a specific footprint or any other board area is just as bad as
>> having DRC return bogus warnings/errors.
>
> I agree in general.  For the copper structures wished for to handle
> star grounds and Wilkinson splitters, we actually want the layer
> to exist for DRC purposes, but not for netlist purposes.  So a
> "nonetlist" flag?

Pads need to be distinguished from "connection points" in DRC.
Footprints have pads, microwave structures have connection points.
There are a lot of differences.

>> The reality is that these structures are not footprints but functional
>> elements. They have design rules, just very different ones with higher
>> orders of complexity. We can't really have pcb process the full
>> complexity of these rules across the whole domain from DC to daylight
>> (or shorter) because of limitations in processing. It would also
>> require a level of developer time which is far past what pcb-* has
>> right now.
>
> Without diving into a more general capability set, this particular tweak
> _sounds_ simple enough to me.  But my limited experience poking around in
> the internals of the existing pcb code base makes me predict it will be
> difficult to do without breaking somethings else.  Maybe I'll look at
> pcb-rnd and see if that looks any more promising.
>
>   - Larry



-- 
Home
http://evanfoss.googlepages.com/
Work
http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2
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=Ta4p
-----END PGP PUBLIC KEY BLOCK-----

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019