Thanks all for your input. What I serendipidiously discovered was many short
fragments of wires scattered throughout this particular sheet which created
junctions between nodes that shouldn't have been connected. I went through
the hard copy to see what connections were valid and eliminated the wrong
connections. Viola.....fixed. Apparently Protels ERC checker did not pick up
the multiple connections for what ever reason. I even made sure the multiple
net name check was on. It may have to do with the sheet not having many net
labels on the connections....not sure.
Thanks again,

Lloyd Good
Engineering Systems Co-ordinator
GE Harris Energy Control Systems Canada Inc.
2728 Hopewell Place NE
Calgary, AB, Canada T1Y 7J7
* +1 (403) 214-4777
* +1 (403) 287-7946


-----Original Message-----
From: Terry Harris [mailto:[EMAIL PROTECTED]]
Sent: Monday, May 07, 2001 10:19 AM
To: Protel EDA Forum
Subject: Re: [PEDA] Netlist error?


On Mon, 07 May 2001 11:08:40 -0400, you wrote:

>I cleaned up this schematic from another designer who didn't realize power
>ports were global, so he placed ports on all the sheets routing GND, VCC
>etc. Now that it's all cleaned up, I get this disjointed GND net. The VCC
>net seems to be connecting as do all the other nets........huh?

Ahh, that could be a tricky area - I seem to remember something about using
port connections to isolate power nets between sheets. 

Like supplying static RAM with a battery backed VCC by placing it on a
separate sheet and connecting power with ports. 

There may even be an example in the handbook or somewhere. 

I don't know exactly how it was supposed to work or if it is still supposed
to work like that. Make double sure you don't have any GND ports left on
the sheet (or sheet symbols). 


Cheers, Terry.


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