[PCB_FORUM] Re: 15.2 allegro symbol padstacks built with .ssm
- From: Barbara Seeger <blm@xxxxxxxxxxx>
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Wed, 11 May 2005 09:36:16 -0400 (EDT)
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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