piclist-bounces@mit.edu wrote:
> Peter wrote:
>> I love that kind of noise. vss connected to gnd is a failure to
>> rename pins and/or nets suitably imho.
> 
> Not really.  It only means that you have a supply and a power pin on
> the same net that have different names.  This can happen easily, and
> should be none of Eagle's business.

Have to disagree on that one. I will agree that it's annoying if all
your grounds are common....

> 
> For example, it's quite reasonble to call a ground symbol GND, and the
> negative supply pin of a PIC Vss.  

not in all cases, no. It is not at all uncommon or unusual to have
different "grounds" that are not common, or only common at one point.
One good example is separate analog/digital supplies. 

I had one case where I required an isolated supply to interface
with a line-operated product. I certainly did not want the 
line-equipment "ground" (or neutral, COM, EARTH, or any of the other 
terms encountered) tied to the user-operated equipment "ground". In
this case, I would have been upset if my schematic program did not 
warn me that I connected "GND" to "Vss"


-Phil Eisermann
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