Ian, Time works against me. Some boards of which I have Protel schematics, I have found the synchronizer to take hours. As much as 4 hours to use the synchronizer or to reload a netlist on top of one. If you use my crazy method, (clear netlist) not only is it fool proof, but it the entire process can be over and done with in 5- 15 minutes on large designs. The synchronizer is fine on small boards. We have one backplane, a designer recently took 4 hours to load a netlist. Using the synchronizer would have taken a week.
Mike Reagan EDSI Frederick MD ----- Original Message ----- From: Ian Wilson <[EMAIL PROTECTED]> To: Protel EDA Forum <[EMAIL PROTECTED]> Sent: Friday, February 14, 2003 12:14 AM Subject: Re: [PEDA] A Question About Netlist Compare and Partially Matched Nets. Protel 99SE SP6. > On 07:38 PM 13/02/2003 -0500, Mike Reagan said: > >John > >You are welcomed...but I should practice what I preach. I have been using > >this method with 99SE SP6 and have had flawless designs. Ok until last > >week , we got a board back with power and gnd were not connected to the > >input connector. The original ECO was a minor change, I imported a > >netlist, and since I knew what the ECO was, made the quick changes. Ran > >DRCs and sent gerbers. The problem was.....the footprint for the power > >connector had duplicate pin numbers. A second import of a netlist in > >Protel causes all of the pins to disconnect, at third import will cause > >only one of the pins to connect. Every subsequent import will cause > >differnet results . I already was aware of it but didnt see the connector. > >This will not show up as an error when you import the netlist either. > >Had I stuck with my fool proof method and not taken a shortcut ( because I > >made an assumption) I wouldnt have had mud in my face. Clear the > >netlist, import the netlist , connect copper, run drcs .....100 percent of > >the time and you will never have a problem. So said the fool of the week > >only because I made an assumption. > > > A solution to this issue, for some at least, is to use Update PCB (the > synchronizer) rather than netlist load. > > I know, Mike, that you get netlists often rather than P99SE sch so this is > not always a solution, but the synch deals with the duplicate pins > correctly, I think. I don't use duplicate pins (as it I don't like the > risks), but I think others have stated that the sycnh is OK but netlist > load has the oscillatory connect/disconnect behavior. > > Ian > > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
