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Mail Archives: geda-user/2016/01/26/15:54:48

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Date: Tue, 26 Jan 2016 11:54:35 -0900
Message-ID: <CAC4O8c8gGbVXz5AXZ6q7CStLWueUCKnCHYDd=_9G4W8iUarFYg@mail.gmail.com>
Subject: Re: [geda-user] The nature of gEDA users
From: "Britton Kerin (britton DOT kerin AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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On Tue, Jan 26, 2016 at 11:34 AM, John Doty <jpd AT noqsi DOT com> wrote:
>
> On Jan 26, 2016, at 1:18 PM, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>
>>>> Frankly, PCB is not a
>>>> high-end package and custom ASIC users are not our target audience.
>>>
>>> But gschem can do schematic capture for ASIC even though that’s not its target. The difference is that gschem doesn’t limit what you can draw. It’s quirky and limits *how* you can express what you need, but I’ve never found it incapable of expressing a circuit. It gives you a few crude primitives and a few ways to compose more complex objects from simple objects. A few layers of that, and you have a 6000 component mixed-signal ASIC.
>>
>> A few crude primitives to compose more complex objects is the only thing available in pcb
>
> I disagree. Pcb doesn’t have truly primitive objects. If it did, there would be nothing to prevent a user from simply drawing a buried via.

How exactly do you propose that they draw the hole plating that makes
it a via, short of 3D CAD?  How to limit it's layer span?  You can
draw whatever you want on layers, it just doesn't get you what you
want.  Submerged pads or insulation drawing won't get you what you
want either.
Either some special codes have to know what via means wrt layers, or
you need general 3D CAD.

Britton

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