[PCB_FORUM] Re: area constraints

There are 2 issues I have with them and they are major deficiencies is that 
they don't work with Specctra. So I just delete them before I go to route. 
Unfortunately though this cause problem with DRC that have to get fixed after 
route, but it is better than leaving them in because there is a performance hit 
on spectra and it just plain screws up the route to much with them in. Cadence 
also screwed up the diff pair implementation of them in 15.2. You will notice 
on your constraint form that it clearly states area constraints are not 
supported with diff pairs. I can understand how that got by with new diff pair 
implementation, and I can deal with it as I like the new diff pair features, 
but I can't under stand how they have completely decided to ignore integrating 
the are constraints into Specctra. I mean come on its been what 10 years now 
since they purchased the CCT router.

My 2 cents

-----Original Message-----
From: chris.ball@xxxxxxxxx [mailto:chris.ball@xxxxxxxxx]
Sent: Monday, May 16, 2005 9:26 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: area constraints



It's not available with the basic 'Studio' tool... is with the
'Performance' option and above.

I upgraded to Performance mainly for this feature and the other constraint
extras. No regrets. Works as advertised.

-Chris



                                                                                
                       
                       Kevin McCowan                                            
                       
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icu-pcb-forum@xxxxxxxxxxxxx             
                       Sent by:                          cc:                    
                       
                       icu-pcb-forum-bounce@freel        Subject:    
[PCB_FORUM] Re: area constraints  
                       ists.org                                                 
                       
                                                                                
                       
                       05/16/2005 09:19 AM                                      
                       
                       Please respond to                                        
                       
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Works great. What upgrades do you need for it?
Isn't it just there? Or do I have some special
higher powered version. I must admit that I don't
know what features are available with what, um,
versions. Area constraints make bga and other
real tight scenarios much easier to accomplish.

Kevin McCowan
Sr. PCB Designer
TSI Telsys

westfeldt wrote:
> Would like feedback on how well this function works.  I'm considering an
> upgrade.
>
> Patrick Westfeldt, Jr.
> North Boulder Circuit Design
> westfeldt_nbcd@xxxxxxxxx
> 720-406-0887
> c 720-272-5822
>
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