[PCB_FORUM] Re: 15.2 allegro symbol padstacks built with .ssm

It's PCR 788194


> -----Original Message-----
> From: Kevin McCowan [mailto:kmccowan@xxxxxxxxxxxxxx]
> Sent: Wednesday, May 11, 2005 6:45 AM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: 15.2 allegro symbol padstacks built with .ssm
> 
> 
> And this is being fixed?
> You would know, right? Being a Cadence person and all.
> I would consider this a significant bug. A feature
> that makes things easier then breaks other stuff.
> I would call that bad, just bad.
> 
> Kevin McCowan
> Sr. PCB Designer
> TSI Telsys
> 
> Barbara Seeger wrote:
> >   Sue,
> >  
> >      The display of a circular pad fails if the pad 
> contains just 1 arc.
> >    Shape -> circular in the menu creates a 1 arc pad. 
> >    The workaround I suggest is to re-create the .ssm by using add 
> >    shape polygon, set to arc, at 180 degrees angle and a 
> radius of what
> >    size you need. This stores the data with 2 arcs which 
> the display code
> >    will draw properly.
> >    
> >    Regards,
> >    
> >    Barbara Seeger - Cadence Design Systems - 978-262-6578
> >    
> > 
> >>I ran into a problem building a symbol with a padstack 
> containing .ssm's
> >>built using shape circles, rather than the old style of building
> >>circular shapes by connecting arc segments. Mostly because that's my
> >>option in 15.2
> >>
> >>I built the .ssm
> >>I created the padstack, the geometry was shape and I added the name
> >>using the shape selection block
> >>I created the symbol and placed the pin :PROBLEM: no 
> visible shape came
> >>through, but I can detect on the area I know that I placed 
> that pin and
> >>it informs me that a pin exists in that area, allegro lets 
> me create a
> >>.bsm and .dra file with no errors
> >>I pull the symbol into a board file, :PROBLEM:  no visible 
> pads on the
> >>component, but once again allegro informs me that the pin 
> does exist in
> >>that location.
> >>I ran adb++ from that board, and the pins were visible in 
> the output.
> >>
> >>I repeated the process, this time using rectangular shapes, "NO
> >>PROBLEMS". Pin pads were visible in the symbol, Allegro, and in the
> >>output.
> >>
> >>Has anyone else run into this? If so are you getting around this
> >>successfully? How so?
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