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re-attaching library to different tech lib

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vlsidesign

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Feb 1, 2007, 4:33:45 PM2/1/07
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I am migrating a library from Metal7 to Metal6. So I programmatically
delete M7, change via types (ie. m1m7 to m1m6), and also re-attach
library to the new tech lib. Most all of the vias re-attaches properly
and point to new tech lib, but there seem to be some of the vias that
don't, that are buried down in the hierarchy. I don't see a pattern in
the ones that don't re-attach properly, so I was thinking to
programmatically open all the cells in the library one at a time, and
change the via 'libName' attribute to the new name. I have both tech
libs (old and new) in my cds.lib file, but it will not let me change
that attribute to the new name. I was hoping to get any suggestions to
point me in the right direction or hints on how I might be able to
resolve this. Thank you for any help and/or tips.

S. Badel

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Feb 2, 2007, 3:14:55 AM2/2/07
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> Most all of the vias re-attaches properly
> and point to new tech lib, but there seem to be some of the vias that
> don't, that are buried down in the hierarchy.

I'm curious why this happens...

> it will not let me change that attribute to the new name.

No. It's a read-only attribute. To change an instance reference,
use leReplaceAnyInstMaster() or leRemasterInstances().


There is also ccpRenameReferenceLib(), which corresponds to "Rename Reference Library"
in the Library Manager.

Stéphane

vlsidesign

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Feb 2, 2007, 2:49:54 PM2/2/07
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On Feb 2, 12:14 am, "S. Badel" <stephane.ba...@REMOVETHISepfl.ch>
wrote:

> > Most all of the vias re-attaches properly
> > and point to new tech lib, but there seem to be some of the vias that
> > don't, that are buried down in the hierarchy.
>
> I'm curious why this happens...

I'll try to find out why it is not doing all the symbolic vias, and
post it here if I find out.

> > it will not let me change that attribute to the new name.
>
> No. It's a read-only attribute. To change an instance reference,
> use leReplaceAnyInstMaster() or leRemasterInstances().

I experimented, and leReplaceAnyInstMaster() function will work in my
code well.

> There is also ccpRenameReferenceLib(), which corresponds to "Rename Reference Library"
> in the Library Manager.
>
> Stéphane

Thank you so much for posting, this is very big help.

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