http://www.cadence.com/Community/forums/27.aspxFrom schematic to autorouting what are your challenges in producing high-speed designs?enCommunityServer 2007.1 (Build: 20917.1142)http://www.cadence.com/Community/forums/thread/18945.aspxThu, 02 Jul 2009 17:32:08 GMT75bcbcf9-38a3-4e2e-b84b-26c8c46a9500:18945PherricOxide0http://www.cadence.com/Community/forums/thread/18945.aspxhttp://www.cadence.com/Community/forums/commentrss.aspx?SectionID=27&PostID=18945<p>I have a placed and routed reuse module that I&#39;m attempting to connect to other modules, and use the auto-router to route between them. However, even when I choose to automatically route within Allegro PCB editor, even with the &quot;preserve existing routes&quot; option checked and the &quot;delete conflicts&quot; box unchecked, it will remove wires from inside the module due to clearance conflicts (at least I assume this is why, it has several hundred of them).&nbsp; </p><p>&nbsp;</p><p>Where do I set the clearence conflict rules for the automatic router within Allegro PCB editor? When I do a DRC update, I find no errors on the wires that are getting removed (busses), so I have no idea what to toggle in the constraint manage. I set line to line spacing down to nothing and are still getting problems. </p>