Re: gEDA-user: could not connect nets gschem/gsch2pcb/pcb

[John Doty <jpd@xxxxxxxxxxxxx>]

On Dec 20, 2007, at 2:47 PM, Steve Meier wrote:

> Well hierarchicaly I use presidence to determine the netname. The
> netname is set from the top out.
>
> So no having multiple netnames for the same net shouldn't always  
> trigger
> a drc error.

I have a recent board that needed just one part from the standard  
"74" library, a 7414. So, I placed an instance, attached a net=+3.3D: 
14 attribute to it, copied it five times, and slotted it. Kind of  
sloppy, but I was in a hurry. +3.3D is the system name for the net.  
Gnetist is unhappy:

Found a cpinlist head with a netname! [Vcc]
Found a cpinlist head with a netname! [Vcc]
Found a cpinlist head with a netname! [Vcc]
Found a cpinlist head with a netname! [Vcc]
Found a cpinlist head with a netname! [Vcc]
Found a cpinlist head with a netname! [Vcc]

However, the netlist appears to be OK.


>
> There should be a rule for which name to use under certain
> circumstances.
>
> One case where I used multiple net names for a single net was when a
> symbol had hidden pins for VCC and VDD. I had a power net for V3.3  
> and I
> conected a power symbol with its own hidden net of VCC  to the V3.3  
> Net
> just so that the symbol with the hidden nets would be added to the  
> net.
>
> I can not vouch if this would work for stock geda. And now I am
> wondering if I broke this in my latest efforts So I will go and check.
>
> Steve Meier
>
>
>
> On Thu, 2007-12-20 at 14:44 -0700, Andy Peters wrote:
>> On Dec 20, 2007, at 5:47 AM, Klaus Rudolph wrote:
>>
>>> Having multiple netnames should not be a problem and work  
>>> "sometimes".
>>
>> Methinks that having multiple netnames for the same net should ALWAYS
>> trigger a DRC error.
>>
>> -a
>>
>>
>>
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>
>
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John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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