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Allegro Design Entry CIS, schematic sheets disappeared!

Kabal

I have no idea how come it happen, I just want to open my project, it opens for some reason in top bar saying (Read Only), and I see no schematic sheets! 

How come it be gone?

 

I'v browsed internet for that kind of problem, it was amazing to see that it is a "common" Cadence software problem for Capture schematic to be gone like that, and typical workaround is to add .dsn file by hand and it should work.

Well, I tried that, I click on Design Resources with right button, browse to .dsn file inside my project, and press Add, and nothing happens!

what has gone wrong?

This is really a nasty problem right in the middle of a project!!

  • Kabal

     I found some typical troubleshooting on this page:

    http://www2.engr.arizona.edu/~brew/ece304spr07/UserManuals/Orcad%20Failures.pdf

     

    But nothing worked out in my case! The project was completed, layed out, and sent to fab anyhow.

     However, I cannot just open the schematics again! Can anyone at least tell me what could have gone wrong?

    Or what caused this?

     

    If this kind of crap can occur randomly I am not even sure if I want to use this Software for the next bigger project

  • steve

    Can you let us know the exact version of software you are running from Help - About ?

  • Kabal

     Sure,

     

    Allegro Design Entry CIS,  16.6-S007

  • steve

    OK - do you have a filename.dbk file in the project directory ? if so rename it to backup.dsn and then try and open that.

  • Kabal

     Ok well... that worked!

     I had the following file: TEST_CHIP_RR_0.DBK

    And my original DSN file was:  test_chip_rr.dsn

     

    I have renamed  TEST_CHIP_RR_0.DBK  to backup.dsn and opened it as design, there was a window to create new schematic, I just clicked OK, and now I see my schematic pages popped out.

     

    So, any idea why would that happen?

    Or this method you described should then cure the design again if this problem happens?

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