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Date: Wed, 6 Jan 2016 13:26:30 +0100
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] A fileformat library (Blind vias, pad stack)
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Precedence: bulk

> I think this is a common misunderstanding. The reason PCB doesn't support 
> burried/blind via is like 5% file format and 95% all-internal-code-in-pcb. 
> (The 5-95 split is an educated guess, not a fact, but I believe it's not 
> far from reality). The 95% includes everything from find.c and DRC to 
> export HIDs and GUI HIDs.
> 
> If we want blind/burried vias, we'll need to find how it is to be 
> represented in a save file eventually, but the bulk of the work won't be 
> around that part.
> 
> Regards,
> 
> Igor2

What do you think about group together a bunch of the ordinary drawing primitives and call it a: connection point, pad stack or pin? Do it need a new file format? Or could it be done with current file format maybe treated similar as a footprint?

Further out:

The same concept could be used both for ordinary pins and vias, only method to add them and what primitives to build them from would be different. Even though a drilled plated hole or a square of copper is the most common it would also be very general for the special cases.

Since there usually are at least a different first pin and in some cases a few more different connection points it would probably be useful to put them in a library with sub folders for different package type: LQFP, QFN, DIP, ...


Nicklas Karlsson