Re: gEDA-user: Power (and other non-graphical) pins

[John Doty <jpd@xxxxxxxxx>]

On Jan 12, 2009, at 1:50 PM, Joerg wrote:

> John Doty wrote:
>> On Jan 12, 2009, at 12:36 PM, Joerg wrote:
>>
>>> When you place the first instantation it'll be pins 1,2,3, the next
>>> one
>>> 5,6,7 and so on. But all are supplied via the common supply pins  
>>> 4 and
>>> 11. In gschem you only have two choices. Either you create a library
>>> model that repeats those pins 4 and 11 visibly for all four
>>> instantations or you create the library part with the power pins
>>> detached where none of the instantations show power pins. This  
>>> can be
>>> practical for auto-connecting digital stuff to a VCC rail but it
>>> doesn't
>>> work well in the analog world. Now you could also have pins 11 and
>>> 4 as
>>> a separate "fifth" device. Anyhow, neither method looks  
>>> professional,
>>> neither is industry practice, and all make schematics more
>>> difficult to
>>> understand for others. Especially for non-analog guys.
>>
>> Joerg,
>>
>> What do you think of the approach in:
>>
>> http://archives.seul.org/geda/dev/Nov-2008/msg00069.html
>>
>
> Thanks, but it says "useless with gschem", whatever that means.

It means you're just supposed to netlist it, not look at it.

> In the
> telephone.sch file I could only see a mike and a speaker with coil,  
> but
> no power pins.

Where did you expect to see the power pins? You don't want them on  
the main symbol, but you also don't want them on a separate symbol.  
This approach puts them in a text file, and gives you a way to merge  
such files into the net list.

You've told us what you don't want. That doesn't tell us what you want.

>
> In the end it's important that a decent power pin handling is  
> inside the
> program itself,

Why?

> not something that must be handled by letting a command
> line routine run over some files.

Monolithic programs are inflexible. gEDA's strength is radical  
flexibility.

>
> -- 
> Regards, Joerg
>
> http://www.analogconsultants.com/
>
> "gmail" domain blocked because of excessive spam.
> Use another domain or send PM.
>
>
>
> _______________________________________________
> geda-user mailing list
> geda-user@xxxxxxxxxxxxxx
> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
>

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user