Mailing list archives : pcb-rnd

ID:4403
From:Bdale Garbee <bd...@gag.com>
Date:Tue, 29 Sep 2020 08:52:04 -0600
Subject:Re: [pcb-rnd] Back annotation
in-reply-to:4402 from Evan Foss <ev...@gmail.com>
replies: 4404 from ge...@igor2.repo.hu
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Evan Foss <evanfoss@gmail.com> writes:
 
> I think the output in the schematic capture program should look more
> like the drc window in pcb-rnd.
 
That's an interesting thought.
 
In the absence of working back annotation, it's not uncommon to see
something you want to change in the layout, go to the schematic to make
the changes, then forward annotate the netlist update and see the
changed rats.  I recall using systems with some level of functional back
annotation where "simple" changes like which of the 4 gates in a 7400
series gate package were used where could be trivially updated in the
schematic just by changing the section designation and letting the
resulting pin number changes ripple.  I can imagine how the changes I
personally am most often making, which are pin choices on SOCs or
connectors, could back annotate fairly cleanly.  But I've never
personally seen a working system where more complex / arbitrary changes
were able to be back annotated in a satisfactory way.
 
So I suspect there's some hybrid approach where simple things just
update and more complex things fall into a "hey, human, you figure it
out" path could make a lot of sense?
 
Bdale
 
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Reply subtree:
4403 Re: [pcb-rnd] Back annotation from Bdale Garbee <bd...@gag.com>
  4404 Re: [pcb-rnd] Back annotation from ge...@igor2.repo.hu