This has been a "feature" of allegro for a real long time. How can you guys not know it? I think I read somewhere in one of the help files that any net with over 50 connections is automatically rendered with the no_rat property to keep the ratsnests from becoming too complicated when they are displayed. You can delete it, of course, but you won't find where it is added. I don't think there is any way to keep it from happening, either. Maybe you could ask Cadence and see if there is some kind of setting that would keep this from happening if you don't want it to for some reason.
Kevin McCowan Sr. PCB Designer TSI Telsys
-----------------------------------------------------------all power nets are treated like this. Automatically, it have NO_RAT property.
I do not know where it comes from, but it seems to be done by the packager or the netrev process.
William.
----- Original Message ----- From: "Daniel So" <danielso@xxxxxxxxxxxxx> To: <icu-pcb-forum@xxxxxxxxxxxxx> Sent: Thursday, April 28, 2005 5:22 PM Subject: [PCB_FORUM] Re: NO_RAT property appearing from schematic
I started this from another design. However, when I came across this problem I imported the netlist onto a brd created from scratch and still got the same results.
Daniel So 1065 La Avenida Mtn View, Ca 94043 (650) 693-2054 email: danielso@xxxxxxxxxxxxx -----Original Message----- From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of William Gerner Sent: Thursday, April 28, 2005 8:19 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: NO_RAT property appearing from schematic
Did you start your design from scratch or use some other board as the start point?
Daniel So wrote:
I am reading in a netlist from Concept which is suppose to have no constraints or properties. However, I am getting a NO_RAT property on the GND net. Doing a search on the ascii files of the schematic pages shows no instances of this property. The property does not appear in
any
of the dat files created from Concept. Any ideas where this property
is
coming from?
Thanks for any ideas
Daniel So
1065 La Avenida
Mtn View, Ca 94043
(650) 693-2054
email: danielso@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 please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/
Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx
Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum.
SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx ----------------------------------------------------------- ----------------------------------------------------------- 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 please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/
Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx
Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum.
SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx -----------------------------------------------------------
-----------------------------------------------------------
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 please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/
Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx
Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum.
SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx -----------------------------------------------------------
To view the archives of this list please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/
Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx
SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx -----------------------------------------------------------