That's all well and good...if the circuit is simple enough to accomodate such a 
manual process.

When, like in my latest design, I had one component (microcontroller) with 100 
pins, an Ethernet PHY chip with 64 pins and 4 ASICs with 44 pins each.  That 
was only the 6 core components.  There there were 2 bus connectors of 72 pins 
each and the associated glue logic.  I think you get the idea.

To complicate matters even more, several of the pins wuold change their 
functionality and direvtion depending upon configuration software/strapping.  
To manually inspect every single connection was just not feasible.  Oh, add to 
it that sometimes things APPEAR to be connected when they are not.

Greg




________________________________
From: David <[email protected]>
To: [email protected]
Sent: Wed, October 21, 2009 4:58:39 PM
Subject: [kicad-users] ERC checks

Hi,
I read a lot of posts in this forum about ERC errors produced by EESchema ERC 
function. Why do people waste so much time trying to find out why EESchema 
produces these errors instead of relying on basic electrical first principles? 
When I'm drawing a schematic I set all pins that cause me problems (in 
EESchema) to passive. Instead I rely on a thorough study of any device data 
sheets and Kirchoffs laws/electrical principles. I can understand if someone 
has not had any electronics training/experience but surely the designer of the 
circuit, i.e you, have a better understanding of how things should be connected.
Sorry for the rant.

David.



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