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Date: Tue, 20 Oct 2015 02:44:07 +0000
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Subject: Re: [geda-user] A lesson from gnet-makefile
From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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On Mon, Oct 19, 2015 at 9:04 PM, Svenn Are Bjerkem
(svenn DOT bjerkem AT googlemail DOT com) [via geda-user AT delorie DOT com]
<geda-user AT delorie DOT com> wrote:
> On 19 October 2015 at 22:02, Evan Foss (evanfoss AT gmail DOT com) [via
> geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>> Not everything Cadence has done is good.
>
> Most things Cadence has done has been pure evil, that's how they
> manage to stay one of the big three. For most small eda tool vendors
> it has been plug into Composer, or die. Be conform to Composer, or
> die. Try to replace Composer, and you will die. (after being bought by
> Cadence or fought by Cadence i court).
>
> All the semiconductor jobs I have had has been using Composer. There
> are other tools, but somehow they all stick to Composer. It's like
> Office and Microsoft.
>
> Now I am doing FPGA so I have a more relaxed relationship to Cadence.
> Problem is just the same: I want to capture the structure of my design
> by schematic and fill the leaf nodes with VHDL behavioural code.
> Problem is just that VHDL is not popular on the other side of the
> Pond. There are some issues with buspins and netlisting, and I am not
> understanding at all what is going on behind the code. Most of the
> devs here seems only interested in making printed circuit boards, so I
> try to back up those who target a generic front end editing tool with
> mostly the same capabilities that Composer gave as a schematic capture
> tool. Cadence may be evil, but Composer as a tool is a pure
> productivity tool. It has to be if you want to create custom
> schematics for ASICs with thousands (and more) of transistors.

Cool.

> If the guile API in gschem is covering enough exposed functionality,
> the netlisting could probably be done in scheme from within gschem,
> short-cutting gnetlist, but I don't know enough about the inner
> workings of gschem to even dream of doing that. I am currently at the
> level of cadar to re-learn lisp. Long way to go.

For a number of reasons gschem only understands connections.
Understanding of netlists is in gnetlist.

> --
> Svenn



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