delorie.com/archives/browse.cgi   search  
Mail Archives: geda-user/2016/01/26/14:54:03

X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-TCPREMOTEIP: 207.224.51.38
X-Authenticated-UID: jpd AT noqsi DOT com
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\))
Subject: [geda-user] The nature of gEDA users
X-Pgp-Agent: GPGMail 2.5.2
From: John Doty <jpd AT noqsi DOT com>
In-Reply-To: <201601261804.u0QI4KEQ009550@envy.delorie.com>
Date: Tue, 26 Jan 2016 12:53:45 -0700
Message-Id: <E7D351BF-5BBB-41AC-B996-D5E27079A82C@noqsi.com>
References: <alpine DOT DEB DOT 2 DOT 00 DOT 1601180756390 DOT 9035 AT igor2priv> <alpine DOT DEB DOT 2 DOT 00 DOT 1601260416150 DOT 9035 AT igor2priv> <56A751EC DOT 8030402 AT iae DOT nl> <20160126124701 DOT 0d061912c7e078ced9d4e6cb AT gmail DOT com> <CANEvwqgs3YFnt7m8mA1DN6X2KdWbyr4zpXCVH321vDo1f7CyxA AT mail DOT gmail DOT com> <201601261804 DOT u0QI4KEQ009550 AT envy DOT delorie DOT com>
To: geda-user AT delorie DOT com
X-Mailer: Apple Mail (2.1878.6)
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

--Apple-Mail=_7220D447-67CC-426A-A7B4-AE6161CBCA64
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
	charset=windows-1252


On Jan 26, 2016, at 11:04 AM, DJ Delorie <dj AT delorie DOT com> wrote:

>=20
>> In this day and age to say blind/buried vias are not needed is =
ridiculous.
>> The fact is ANY design that requires even one FPGA, custom ASIC or
>> medium to large BGA needs blind/buried vias.
>>=20
>> This is factual and is easy vetted.
>=20
> If you can afford a custom ASIC, you can afford a top-end EDA package,
> and a FAB that supports high-end features.

Not true. In my world, I have to do much of the EDA work in the the =
proposal and feasibility study phases. Shoestring budgets, or no budget =
at all. A big company covers this by having lots going at once, but =
Noqsi Aerospace is a tiny company (3 people at the moment, the largest =
we=92ve ever been). For our current biggest project, we went through two =
years of doing a lot of work for zero pay (but now it=92s paying off). =
We couldn=92t have afforded a top-end package during those years. We =
worked with a board designer who used Osmond PCB: not high-end, but it =
has blind and buried vias. He was much faster and more accurate than the =
big-$$ contractors who use the high-end software.


>  Frankly, PCB is not a
> high-end package and custom ASIC users are not our target audience.

But gschem can do schematic capture for ASIC even though that=92s not =
its target. The difference is that gschem doesn=92t limit what you can =
draw. It=92s quirky and limits *how* you can express what you need, but =
I=92ve never found it incapable of expressing a circuit. It gives you a =
few crude primitives and a few ways to compose more complex objects from =
simple objects. A few layers of that, and you have a 6000 component =
mixed-signal ASIC.

Pcb says to the user =93my way or the highway=94. Gschem says =93live =
with my quirks, and I=92ll help you do anything=94.

>=20
> I can't afford any of that tech.  Heck, I can barely afford 4-layer
> boards with 6/6 rules.  There's a huge community of designers that
> can't (or won't) afford high tech features in their boards.

I never thought I=92d do ASIC design until a customer asked me to try =
it.

Yogi Berra =97 'It's tough to make predictions, especially about the =
future.=92

>=20
> So you can say "this is factual" but it's not.  It may be a
> requirement for a subset of our potential user base, but it's not
> ridiculous to assume that many people just aren't going to use them.
> Until we decide to support that tech, we're simply targetting the
> "many people" who don't need them.
>=20

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com



--Apple-Mail=_7220D447-67CC-426A-A7B4-AE6161CBCA64
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
	filename=signature.asc
Content-Type: application/pgp-signature;
	name=signature.asc
Content-Description: Message signed with OpenPGP using GPGMail

-----BEGIN PGP SIGNATURE-----
Comment: GPGTools - https://gpgtools.org
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=lfZh
-----END PGP SIGNATURE-----

--Apple-Mail=_7220D447-67CC-426A-A7B4-AE6161CBCA64--

- Raw text -


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