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Encounter Export to Virtuoso (GDS/DEF or OA?)

Kabal
Hello,

 


I have successfully implemented some small design with RTL Compiler, after that
used the Encounter to produce the layout from synthesiz Verilog file. 

Then I did Geometry and Connectivity checks, it all was fine. 

Now I want to export the layout to Virtuoso for verification and integration in other modules, and here I have a huge problem.

If I am correct there are two routes:
1) Export DEF and GDS, then in Virtuoso Import them one after another
2) Export OA and in Virtuoso Import OA

#2 doesnt work for me, since during export from Encounter it wants streamMap file which I seem not to have for this kit 

I tried #1, I export DEF file, then export the GDS file, but when I do streamIN in Virtuoso, some of the wires are not seen, and DRC gives me TONS of errors...

One thing I noticed weird here is: when I export from Encounter GDS, and I dont have streamOut.map file, it creates it himself.
But when I want to export OA, and do not have that file either, it complains that it cant find this file. Why?
 
And in general, what is the best flow for export of Layout from Encounter to Virtuoso of version 6? (becuase I see some people suggest not to use GDS for version 6 but use OA) but again... OA doesnt want to export and I am not quite sure where to get the map file, the one which comes with kit is not being accepted by Encounter 
Parents

  • and well, what you wrote in first paragraph doesnt work since in my case it messes up coordinates & layers. Which is why I was looking for another solution. And when I do things the way you described in second paragraph same things happen, for some reason when I open design in Virtuoso Layout, I see all cells are shifted. And by the way I also see that no power/other connections are made on different metal layers.

    And now about my previous solution, it kind of works, however I noticed that during LEF import with layout option, the diagonal layout connections are messed up sometimes and have some square areas added to them. So I am still trying to make it all work in a right way.

    I am really not sure now why during the LEF import with Layout view the 45deg connections are "spoiled" 

Reply

  • and well, what you wrote in first paragraph doesnt work since in my case it messes up coordinates & layers. Which is why I was looking for another solution. And when I do things the way you described in second paragraph same things happen, for some reason when I open design in Virtuoso Layout, I see all cells are shifted. And by the way I also see that no power/other connections are made on different metal layers.

    And now about my previous solution, it kind of works, however I noticed that during LEF import with layout option, the diagonal layout connections are messed up sometimes and have some square areas added to them. So I am still trying to make it all work in a right way.

    I am really not sure now why during the LEF import with Layout view the 45deg connections are "spoiled" 

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