Those are old instructions. It should work (and does for me) if you just check the box in Autoroute | Setup for "lock all pre-routes". If you later do Tools | Unroute | All, be sure to choose "No" for unrouting locked primitives.
Does the board pass DRC completely (with "unrouted nets" un-checked) before you start autorouter? Do you use the grid that the autorouter recommends when you start it? Before SP6 I used to have a lot of autorouter problems, and I found Unroute All to be unreliable after autorouter failures. I would always make a backup copy of the board before autorouting, and go back to that INSTEAD of doing Unroute All. I haven't had this problem since SP6, but if your particular board is having autorouter problems, I'd suggest doing that, just in case Unroute can't handle it. > -----Original Message----- > From: Robison Michael R CNIN [mailto:[EMAIL PROTECTED]] > Sent: Monday, February 04, 2002 2:48 PM > To: 'Protel EDA Forum' > Subject: [PEDA] autoroute endless loop... > > > hello, > > for the first time i've attempted to lock down some > pre-laid traces and then have the autorouter finish > the job. i believe that i've followed the directions > on p.576-577 of the protel99 design book by clicking > one of the laid traces, locking it, and then extending > that to all the traces using global. i then did the > same with the vias. > > my problem is that autoroute is now locked into a loop > flashing back and forth between vias and contentions > and shape router/hot spots, and its not routing any > more traces. > > this is a fairly wide open board, so i'm not sure why > its hung up. i wouldn't be surprised if i have wrongly > locked the pre-laid traces/vias. > > thank you, miker * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
