Problem in fit window

[sridhartv25@gmail.com]

Hello all,

I am facing a problem in the layout while executing the fit
command,
Even though there are no objects , the layout is not exactly fit to
its position,it happens only when I delete the existing objects and
try fit command.
I am sure that no other layers are left over there as I can check with
the ctrl+a option. How can I solve this problem , is there is any
skill approach for this.

Cheers,
Sridhar.

 

[Andrew Beckett]

sridhartv25@gmail.com wrote, on 02/24/09 12:55:

Hello all,

I am facing a problem in the layout while executing the fit
command,
Even though there are no objects , the layout is not exactly fit to
its position,it happens only when I delete the existing objects and
try fit command.
I am sure that no other layers are left over there as I can check with
the ctrl+a option. How can I solve this problem , is there is any
skill approach for this.

Cheers,
Sridhar.

There is an attribute for each layer purpose pair in the tech file which
indicates whether it contributes to the "changed layer". This manipulation of
the changed layer occurs if Diva DRC has ever been run on the design, because
it's how Diva keeps track of which parts of the layout have been changed, for
the purposes of incremental DRC.

Try looking in the LSW, at Set Valid Layers. Find "changedLayer" (purpose tool0
and tool1 - they may show up as t0/t1) and make them valid. Then make them
visible and selectable in the LSW, and then you should (if this is the problem)
see the shapes on changedLayer and be able to delete them. Note they may be in
an lower level cell (although it sounds as if you have no hierarchy).

Another way to check is to do:

cv=geGetEditCellView()
cv~>shapes~>layerName

and see if there are any shapes on any layers in the layout.

Regards,

Andrew.