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From:	"Glenn (glimrick AT epilitimus DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Date:	Sun, 7 Mar 2021 20:02:09 -0800
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Kai-Martin Knaak wrote:
> "Glenn (glimrick AT epilitimus DOT com) [via geda-user AT delorie DOT com]"
> <geda-user AT delorie DOT com> schrieb am  6. March 2021:
>
>>> What motivated you to take the effort? 
>>> What kind of project will benefit the most from the backend?  
>> Short answer is like SAB,
>                        ^^^
> hu?
SAB is another geda add-on I wrote. Specifically it provides a mechanism
for altering the netlist prior to backend processing. It uses attributes
on components to mark up the schematic. Because it operates
independently of the backend it works with any backend. My initial
reason for writing it was to be able to draw a schematic with all the
simulation-only components present (e.g spice models, node bridges, etc)
and then remove them from the netlist when doing things like
transferring the design to pcb. But still be able to go back, make a
change to the design, and simulate it without the overhead of having to
add and remove the simulation components at each iteration, or maintain
multiple versions of the design. Of course like most things I write it
kind of grew as the possibilities revealed themselves.

SAB stands for Simulation/As-Built. You can find it on my repo at
http://epilitimus.com/git_repos/geda-gaf.git in the sab branch. Roland
has been looking it over as he has the time. See the README file in
examples/SAB for more information.

xspice doesn't require SAB, nor the other way around, but I think they
complement each other very nicely.

Ultimately I write these tools so I can use them and just publish them
as I think others might find them useful as well.

Glenn

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