change library name of vias in layout

Hi there,

i've taken a layout from one process to another almost identical one.
They are so similar i can take the layout and search and replace the
library of the pCells and its almost DRC clean. Is there an easy way
to re-reference the library name of the symbolic contacts/vias?

I have almost zero skill knowledge but i did crudely try:

w = hiGetCurrentWindow()
cv = geGetWindowCellView(w)
cv~>instances~>libName="stu_new_process"

but this returned:

*Error* setSGq: dbSetq: Can not set attribute - libName

I think that libName is the correct attribute as when i do:

cv~>instances~>libName

it returns:
("stu_old_process")

Thanks

Stu

 

[S. Badel]

Stuart,

i've taken a layout from one process to another almost identical one.
They are so similar i can take the layout and search and replace the
library of the pCells and its almost DRC clean. Is there an easy way
to re-reference the library name of the symbolic contacts/vias?

Go to CIW->Tools->Technology File Manager, click on "Attach" and select the new tech library.
This automatically replaces the vias (if I remember correctly, at least).

I have almost zero skill knowledge but i did crudely try:

w = hiGetCurrentWindow()
cv = geGetWindowCellView(w)
cv~>instances~>libName="stu_new_process"

but this returned:

*Error* setSGq: dbSetq: Can not set attribute - libName

This attribute is read-only. The thing is, instances do not reference their master directly, but
through an "instance Header". I guess the libName/cellName/viewName properties on the instance are
provided as a convenience.

The bottom line is that to change the master, you have to change the instHeader.

For this, you can use the commodity function leReplaceAnyInstMaster()

Of course, this change applies to all instances referencing the same master (which is the goal in
your case..)

Cheers,
Stéphane

 

[S. Badel]

I forgot to mention :

Library Manager -> Edit -> Rename Reference Library

S. Badel wrote:

The bottom line is that to change the master, you have to change the
instHeader.

For this, you can use the commodity function leReplaceAnyInstMaster()

Of course, this change applies to all instances referencing the same
master (which is the goal in your case..)

Pardon me, I have to rephrase this : the change applies to all instances, if you change the inst header.

Using leReplaceAnyInstMaster() allows to change the reference of a single instance only, which is
difficult to do "by hand".


Stéphane

 

[Andrew Beckett]

S. Badel wrote, on 03/19/09 10:27:

I forgot to mention :

Library Manager -> Edit -> Rename Reference Library

S. Badel wrote:

The bottom line is that to change the master, you have to change the
instHeader.

For this, you can use the commodity function leReplaceAnyInstMaster()

Of course, this change applies to all instances referencing the same
master (which is the goal in your case..)

Pardon me, I have to rephrase this : the change applies to all
instances, if you change the inst header.

Using leReplaceAnyInstMaster() allows to change the reference of a
single instance only, which is difficult to do "by hand".


Stéphane

Also, I'm not sure whether you're (Stuart) using IC61 or IC5141. Vias are not
instances in IC61, so things are probably different.

Probably best to log a service request with us here in the UK ;-)

Regards,

Andrew.

--
Andrew Beckett
Senior Solution Architect - Cadence Design Systems Ltd (UK)

 

Hi Guys, thanks for the replies. I should have stated i was referring
to 5141.

Stephane, this did the trick for me:

"Library Manager -> Edit -> Rename Reference Library "

I'll take note of you skill suggestion as this will be useful for me
in future.

Thanks

Stu