Need skill code to find the instance orientation from Virtuoso

Found some useful code (excerpt from this forum), please give your comments:

####################### 

let( ( wrOrient)

    foreach( instancepointer geGetSelectedSet( )
      unless( null( instancepointer->orient)
    wrOrient = instancepointer->orient
    case( wrOrient
      ( "R0"
        wrOrient = "R90"
      )
      ( "R90"
        wrOrient = "R180"
      )
################

Also please give your suggestion on how to select all the instances.. 

; cellView in the current window
cv=geGetEditCellView()
foreach(inst cv~>instances
  printf("Instance %s has orientation %s\n" inst~>name inst~>orient)
)

I'll leave it to you to put in whatever code you want to check - your requirements weren't clear beyond that.

Regards,

Andrew.

cv = geGetEditCellView()
foreach(inst cv~>instances
    case(inst~>objType
        ("inst"
            printf("Inst: %s of %s is oriented %s\n" inst~>name inst~>cellName inst~>orient )
        )
        ("mosaicInst"
            printf("MosaicInst: %s of %s is oriented %s\n" inst~>name inst~>cellName car(inst~>mosaic~>tileArray))
        )
        (t
            printf("Unrecognized instance objType: %L\n" inst~>objType
        )
    )
)

The code above gets the instances from the cellview attribute called instances: geGetEditCellView()~>instances

The code in your second post works from the selected set: geGetSelectedSet()

If you are working in Cadence 5.1.41, the above code should be all you need. If you are working in Cadence 6.1.x, there are additional objects like vias that will have an orient, but will not be found from the instances attribute. The object type will also be something like "stdVia" or "customVia". If this orientation is important, you would need to loop through cv~>vias.

Derek

Thank you so much Anrews and Derek.

In my case I have the gdsii and the techFile, so based on these two data, how should i execute the code given above to get the instance name the corresponding orientation value.

Appreciate your quick reply.

Thanks once again,

Ramanath

Also please mention how to direct the output to a specific file?

If you don't know what to do given a GDS file and a techFile, then it seems odd that you're asking for SKILL code to find the orientation information? Not sure what you're actually trying to achieve here. After all, if the data comes from GDS, the instance names will be pretty meaningless (stream format does not record instance names).

First you'd need to do File->Import->Stream and import the GDS file (specify the tech file too) and generate a library containing the design.

Then open the top level cellView in a window, and use code similar to that shown before.

I'll base it around Derek's code:

cv = geGetEditCellView()
fp=outfile("report.txt")
foreach(inst cv~>instances
    case(inst~>objType
        ("inst"
            fprintf(fp "Inst: %s of %s is oriented %s\n" inst~>name inst~>cellName inst~>orient )
        )
        ("mosaicInst"
            fprintf(fp "MosaicInst: %s of %s is oriented %s\n" inst~>name inst~>cellName car(inst~>mosaic~>tileArray))
        )
        (t
            fprintf(fp "Unrecognized instance objType: %L\n" inst~>objType
        )
    )
)
close(fp)

Regards,

Andrew.

Hi Andrews,

                   The time to create and open a cell view from gdsii & techfile in Virtuoso takes around 30 min, when operating with GB databases.. So, I want to know if there is a method so that the cell creation and view opening can be avoided..

Anyway, thanks for the script update and it works fine (one bracket is missing and I corrected it at my end).

Thanks in advance.

Ramanath

You requested "skill code to find the instance orientation from Virtuoso", yet it sounds like you want to get the orientation from the gdsii file. Reading gdsii and running Skill code in Virtuosos are two very different tasks. If you wish to read the gdsii, I suggest you do a Google search  on GDSII syntax. I know there is a Perl module on CPAN for reading GDSII. Nonetheless, this forum is not the right place for what you are looking for.

Hi All,

           I will look into streamIn to automate this.

Anyway, thank you so much for your replies and please close this issue/ticket as the solution has been found.

Regards, 

Ramanath