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Mail Archives: geda-user/2020/12/09/14:31:35

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Subject: Re: [geda-user] SAB processing patches
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From: "Glenn (glimrick AT epilitimus DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Message-ID: <7f074abb-e7ae-275c-ee49-d06fc7f2a706@epilitimus.com>
Date: Wed, 9 Dec 2020 11:10:47 -0800
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John Doty wrote:
>
>
>> On Dec 9, 2020, at 12:42 AM, Glenn (glimrick AT epilitimus DOT com
>> <mailto:glimrick AT epilitimus DOT com>) [via geda-user AT delorie DOT com
>> <mailto:geda-user AT delorie DOT com>] <geda-user AT delorie DOT com
>> <mailto:geda-user AT delorie DOT com>> wrote:
>>
>>> So the gnetlist backend to generate the xspice netlist needs the
>>> bridge devices in the schematic (the sim context)
>
> Not true. With gnet-spice-noqsi, you may put the bridge devices either
> in a subcircuit that’s referenced by the spice-prototype attribute, or
> directly in the spice-prototype attribute.
>
>>> but other non
>>> simulation netlists (the ab context), e.g. pcd or partslist, need them
>>> removed. At the risk of starting another discusson, this is why the
>>> spice-noqsi backend was not going to work, it works in the sim
>>> context.
>
> The stuff in a spice-prototype attribute is ignored by every other
> netlister. That’s how you can keep the sims domain separate from from
> other domains.
>
>
Maybe a concrete case will help make my point.

Given the schematic (using a resistor in place of a bridge device):
v 20191008 2
C 40000 40000 0 0 0 title-B.sym
C 45600 46000 1 0 0 resistor-1.sym
{
T 45900 46400 5 10 0 0 0 0 1
device=RESISTOR
T 45800 46300 5 10 1 1 0 0 1
refdes=R1
}
C 47100 46000 1 0 0 resistor-1.sym
{
T 47400 46400 5 10 0 0 0 0 1
device=RESISTOR
T 47300 46300 5 10 1 1 0 0 1
refdes=R2
}
C 48500 46000 1 0 0 resistor-1.sym
{
T 48800 46400 5 10 0 0 0 0 1
device=RESISTOR
T 48700 46300 5 10 1 1 0 0 1
refdes=R3
}
N 46500 46100 47100 46100 4
N 48000 46100 48500 46100 4

How do I markup R2 using spice-noqsi so it goes away when I do

$gnetlist -p partslist1 -o - <the above schematic>

Glenn

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