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Date: Mon, 19 Nov 2012 11:05:25 -0500
Message-ID: <CAM2RGhSxYeWHz=ZMhZVTJyxw8k9Y+Mo-mZadrMrw76VN4tY+2A@mail.gmail.com>
Subject: Re: [geda-user] git mirror of gedasymbols.org
From: Evan Foss <evanfoss AT gmail DOT com>
To: geda-user AT delorie DOT com
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I will concede that right now the current mechanisms have a kind of
honesty in that what you enter into the gschem is very literally
translated into the SPICE code. However, the values as written in
SPICE are just a shorthand invented because of the primitive days
SPICE was written in. We don't typically write schematics for
documentation using that notation.

On Mon, Nov 19, 2012 at 11:02 AM, Evan Foss <evanfoss AT gmail DOT com> wrote:
> Seriously? You put an Omega at the end of a value for a resistance and
> people know what that means. Ditto for the mu before a capital F. Why
> would anyone put an SI unit for distance on an symbol in gschem? I
> have put max. distance values on some nets to remind myself not to
> make some signal paths too long but for that I usually use a comment=
> which the netlister strips off. I would prefer that there be a
> trace_length_max= or some such flag in gschem but it does not make any
> sense to add it until...
> 1. There is a C coded tool to bridge the meta data issue to PCB
> 2. There is a mechanism in PCB to use said information.
> Be we have already had this discussion.
>
> On Mon, Nov 19, 2012 at 9:31 AM, John Doty <jpd AT noqsi DOT com> wrote:
>>
>> On Nov 19, 2012, at 6:50 AM, Evan Foss wrote:
>>
>>> Oh when I used Omega on resistors the old ones would fail. SDB might
>>> have fixed it but there was some reason that I can not remember for
>>> not using it.
>>
>> How should "mΩ" be translated? What about "MΩ"? Should "m" by itself represent "meter" (SI) or "0.001" (SPICE). Is there a simple, comprehensible rule to distinguish SI unit designations needing translation from strings that might resemble them but shouldn't be translated?
>>
>> John Doty              Noqsi Aerospace, Ltd.
>> http://www.noqsi.com/
>> jpd AT noqsi DOT com
>>
>>
>>
>
>
>
> --
> Home
> http://evanfoss.googlepages.com/
> Work
> http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/



-- 
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http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/