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Forums > Digital IC > Floorplanning, Place and route

Subject: About the OVERLAP layer in LEF, how can I get its boxes in FE
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eminemshow
Posts: 75
Online: User is Offline
6/06/2007 2:39 AM  
Dear ALL:

As you know, the OVERLAP layer in LEF is for defining rectlinear blocks, now I want list all the physical box for this layer, what command or TCL scriptss can I use, pls help me!


Many thx!!
bougantp
Posts: 19
Online: User is Offline
6/06/2007 7:07 AM  
Could you please detail your question:
Are you dealing with a hierarchical design ?
Your overlap Layer represent rectilinear partition ?

To print the cutout rectangle for a partition (before commit) you can try the following script:

set instancePtnName "You partition instance name"
set ptnCut [dbGetPtnCutByName $instancePtnName]
while {$ptnCut != "0x0"} {
if {[dbPtnCutName $ptnCut] == $instancePtnName} {
set ptnCutBox [dbPtnCutBox $ptnCut]
puts $ptnCutBox
}
set ptnCut [dbPtnCutNextInFPlan $ptnCut]
}
eminemshow
Posts: 75
Online: User is Offline
6/07/2007 7:30 PM  
Dear bougantp:
Thanks!! My design is not hierarchical design. You code is to get all the partition cuts of a design, it is useful for a self-defined rectilinear shape block. But my scenario is that I have a HARD macro imported from a LEF file. I want to get OVERLAP layer box which is similar to a partition cut layer box.
BobD
Posts: 80
Online: User is Offline
6/25/2007 7:00 AM  
Hi eminemshow,

In $ENCOUNTER/tools/fe/gift/scripts/tcl, there is a script called "user_scripts.tcl" that contains a proc called "userGetInstOverlap" that I believe does what you're seeking to do. Could you have a look at that and report back whether it does what you need?

Thanks,
Bob
eminemshow
Posts: 75
Online: User is Offline
6/25/2007 8:21 PM  
Dear BobD:

I cannot find the script 'user_scripts.tcl' under the specified path. I can find a lot of other tcls except this one......My SOCE is SOC52USR2. Can you upload the script.

Many thanks!!
eminemshow
Posts: 75
Online: User is Offline
6/26/2007 12:48 AM  
Really thanks, BodD!!

I find the tcl in the SOC61 update tar file. It is what I want. We just cannot get the OVERLAP layer at the top cell level, but at the hierarchical inst level. The script is amazing!!

Best Regard!!
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Forums > Digital IC > Floorplanning, Place and route > About the OVERLAP layer in LEF, how can I get its boxes in FE


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