Re: gEDA-user: net= attributes, symbols and schematics

[Stephen Williams <steve@xxxxxxxxxx>]

I was thinking about multi-part symbols, actually. It would be
kool to draw a symbol for all the business pins and another symbol
for the power pins. Then I could have a sheet just for power/gnd.
But I wondered about netlisting and refdes support. Bummer that
renumbering doesn't preserve relationships.

Kai-Martin Knaak wrote:
> On Wed, 14 Oct 2009 15:58:14 -0700, Stephen Williams wrote:
> 
>> I'm planing a circuit where some chips have a wide variety of different
>> power supply requirements. I'm debating with myself whether I should
>> create symbols that have net= attributes for all the various power
>> types, or if I should attach attributes from outside the symbol, or
>> create pins for all the various power types of the chip, or whatever.
> 
> Invisible information in the schematic is bad(tm). That's why I prefer 
> separated power symbols. These explicitly wear all the power pins a 
> component needs. They can be put somewhere in the backwaters of the 
> sheet. That way I avoid cluttering of the schematic but still have all 
> the power pins visible in print.
> 
> However, support for such multi part symbols is not complete, yet. 
> Renumber does not honor shared refdeses. The part with the footprint 
> attribute has to be inserted last. 


-- 
Steve Williams                "The woods are lovely, dark and deep.
steve at icarus.com           But I have promises to keep,
http://www.icarus.com         and lines to code before I sleep,
http://www.picturel.com       And lines to code before I sleep."


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