Re: gEDA-user: VDD/VSS net confusion

[John Doty <jpd@xxxxxxxxxxxxx>]

On Jun 16, 2008, at 1:50 PM, Brian Fuller wrote:

> Sorry, I typed that up real quick once I noticed that there was no  
> immediate option to take a schematic and squish it into a symbol. I  
> was wondering if there were any plans to have such an option,  
> something I've seen regularly on much more expensive, albeit not as  
> high quality suites.

We call it "hierarchy". Put I/O tags on your schematic, create the  
symbol, refer to the schematic with the source= attribute. Match  
refdes= attributes on the I/O tags to pinlabel= on the symbol.

Very useful!

>
> I tried to gnetlist my counter, and got quite an error list. When  
> you say add nets, do you mean I need a dotted point on the wired  
> connections?
>
> -Sorry, I've always been forced to use my school's tools and lately  
> I've been really wanting to get more into the Geda project, any  
> advice would be appreciated
>
> -BAF
>
> On Mon, Jun 16, 2008 at 12:14 PM, Brian Fuller <brian@xxxxxxxxxx>  
> wrote:
> I saw the question and made a real quick counter, but was hoping to  
> modularize parts of it.
> I was wondering how tough it would be to export simple parts of  
> gscheme schematics into component files. Such as exporting a simple  
> S-R latch to be able to easily create a D-FF to quickly work up to  
> a binary counter.
>
> Any suggestions?
>
> On Mon, Jun 16, 2008 at 11:48 AM, John Luciani <jluciani@xxxxxxxxx>  
> wrote:
> On Mon, Jun 16, 2008 at 2:38 PM, Peter Clifton <pcjc2@xxxxxxxxx>  
> wrote:
> On Mon, 2008-06-16 at 13:34 -0400, John Luciani wrote:
> > There are a number of places in your schematic where the active
> > end of one symbol pin is placed on top of the active end of another.
> > You need
> > to move the symbols apart and connect the pins with nets.
> >
> > This should fix a number of your netlist problems.
>
> Not true?
>
> My mistake. I had thought that butting pins didn't connect.
>
> Maybe I was thinking of a different EDA tool. With Orcad
> I got into the habit of placing a net for all pin to pin connections.
> I have always placed nets since.
>
> (* jcl *)
>
>
> -- 
> http://www.luciani.org
>
>
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John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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