Re: gEDA-user: Strange behavior with input-1.sym and output-1.sym?

[John Doty <jpd@xxxxxxxxx>]

On May 6, 2009, at 4:26 PM, Stefan Salewski wrote:

> On Wed, 2009-05-06 at 18:20 -0400, dfro@xxxxxxxxx wrote:
>> Adding the graphical=1 attribute made input-1.sym and output-1.sym  
>> work.
>>
>> None of the symbols in the Input/output(generic) directory have a
>> graphical=1 component.
>>
>> I wonder why input-2.sym and output-2.sym work without graphical=1?
>>
>> Dave
>
> My guess is, that we do not really need graphical=1 for in, out or  
> power
> symbols. I think my own symbols work fine without it.
>
> One important difference between your mentioned symbols: Some have
> already a net=INPUT:1 attribute, some not.
>
> Of course in or out symbols are useless without such an net  
> attribute --

Unless you're using them for hierarchical connections, in which case  
it's the refdes= attribute on the IO symbol that matches a pinlabel=  
attribute on a pin on the symbol representing the subcircuit. Which  
is why we have refdes=pinlabel on, e.g., input-1.sym to remind the  
designer what's going on.

The overloading of attributes in gEDA can be confusing...

> try inserting one. Of course you can use arbitrary names like
> net=myfunnynet:1

For simply naming nets, I think it's easier to attach a netname= to  
the net itself.

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




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