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Subject: Re: [geda-user] Pin mapping (separate symbols from mappings)
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From: John Doty <jpd AT noqsi DOT com>
In-Reply-To: <201510192110.t9JLAFKG007281@envy.delorie.com>
Date: Mon, 19 Oct 2015 17:03:37 -0600
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On Oct 19, 2015, at 3:10 PM, DJ Delorie <dj AT delorie DOT com> wrote:

>=20
>> You can't do that in gnetlist unless you already have a refdes to =
start from.
>=20
> Where did you get the idea that we didn't?
>=20

You wrote:

> My sample schematic would have U1-1 and U1-1.

So you don=92t really have a refdes to start from: it doesn=92t identify =
the component.

You also wrote:

> If the tool *requires* that each symbol be unique, then either...
>=20
> 1. It must not let the user provide non-unique symbols, or
>=20
> 2. It must produce a hard error when it detects non-unique symbols, or
>=20
> 3. It must provide some user-independent way of making the symbols =
unique.
>=20
> gaf currently does none of these.

But that=92s not how geda-gaf works. Choosing refdeses is part of how =
the user communicates her intentions.

We could have better DRC: gnet-drc2 does not properly model the =
capabilities of the kit, finding lots of errors where there are none. =
The real errors are hidden in the spew, but should be detectable with =
better logic.

You also wrote:

> What I want is a way to reliably map an instance of a device with its
> schematic symbol, without the user having to jump through hoops to
> satisfy some hidden "rule" about how to create schematics.

How is it hard for a user to understand that symbols need to be =
distinguishable at the schematic level? And that when merging symbols =
into one package, they=92ll get the package=92s refdes and their own pin =
numbers. I don=92t think it=92s that hard.

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



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