Richard, Fix the routed net & clines before re-routing/autoroute. Fixing doesn't rip up routed trace during autoroute. Alternate, you may create boundary in the region you want to route & write rules accordingly. Hope it helps Trilok Budathoki GE Energy Email: trilok.budathoki@xxxxxx -----Original Message----- From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of richard moffat Sent: Friday, July 28, 2006 12:00 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Specctra autorouter - protecting some / ripping up others Hello all We have a partially-routed board, with some very carefully hand-routed traces and some other routed lower-speed lines. We wish to try autorouting the rest (with constraints thrown in, of course), but protecting the most critical lines. I believe Specctra, by default, protects all previously-routed wires. What do I write in the .do file to tell it it's OK to rip up and re-route some wires? Cheers, Richard __________________________ Richard Moffat PCB CAD Manager Allied Telesis Labs ph. +64 (3) 3393000 richard.moffat@xxxxxxxxxxxxxxxxxxx NOTICE: This message contains privileged and confidential information intended only for the use of the addressee named above. If you are not the intended recipient of this message you are hereby notified that you must not disseminate, copy or take any action in reliance on it. If you have received this message in error please notify Allied Telesis Labs Ltd immediately. Any views expressed in this message are those of the individual sender, except where the sender has the authority to issue and specifically states them to be the views of Allied Telesis Labs. ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list go to http://www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx ----------------------------------------------------------- ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list go to http://www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx -----------------------------------------------------------