[PCB_FORUM] Re: Specctra autorouter - protecting some / ripping up others

 There is also the soft protect mode. Where traces
are essentially fixed but can be moved if absolutely
necessary.


Jerry

-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Dave Seymour
Sent: Friday, July 28, 2006 9:21 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Specctra autorouter - protecting some / ripping
up others

Use the Fix property  in Allegro.

I believe that Specctra can never change the Fix property.
Protect and Unprotect in Specctra can allow changes
to the vias/nets while routing for the UN-fixed elements from
Allegro.

Hope this helps.

dave


richard moffat wrote:

>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
>
>  
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>Allied Telesis Labs
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-- 
Dave Seymour, CID+
Catapult Communications Inc.
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