Steve, been there done that, just a matter of days ago myself. Never have found the solution for absolute certainty, largely I just ignore it. One thing to check for in the PCB database is a duplicate net. I have quite often found a duplicate net when I have this problem. During synchronization the synchronizer toggles back and forth between the two nets is my theory. I believe that I deleted the net that had the least nodes and transferred those nodes to the other occurrence of the net.
Sincerely, Brad Velander. Lead PCB Designer Norsat International Inc. Microwave Products Tel (604) 292-9089 (direct line) Fax (604) 292-9010 email: [EMAIL PROTECTED] http://www.norsat.com See us at Booth 323 at Satellite 2002 in Washington, DC March 6-8. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 1:58 PM To: Protel EDA Forum Subject: [PEDA] Netlist load anomaly Today must be my day for Protel wierdness. After a marathon session of editing BOM info via spreadsheet, I'm not sure it's worth the bother. Takes almost as long to clean up after it as it would to just do all the edits directly in PCB. Fundamentally, this should not be an "export" operation, but rather just an alternate view of the original database. However, that's not the point of this post. Now that I've got the schematic all tidied up, I'm trying to load the netlist to the PCB. Everything now loads cleanly, except for one pin. I can load the netlist, and then immediately reload the exact same netlist. All errors are resolved, and there are no macros generated the second time, as I'd expect - EXCEPT!! There is one pin giving me fits. Every netlist load, I get a macro "Removing U111-2 from net A0" followed immediately by "Adding U111-2 to net A0". There is nothing unusual about U111, either in the schematic symbol or the PCB footprint - no duplicate pins or pads, and the other instance of the exact same schematic symbol and its corresponding exact same footprint show no problems. And all the rest of that particular net loads with no problem. I see nothing funny in the netlist file around U111 nor A0. I know about the problem with duplicate-named pads, where the connection will toggle back and forth between the pads with each netlist load, but this seems not to be the problem here. On the theory that using a ground power object on the pin might behave differently, I even went to the other instance of this part and removed its ground and temporarily placed a port symbol there, but the other part still shows no problem, while this pin gets removed and reattached every netlist load. Any hints? Steve Hendrix * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *