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incorrect extraction issue

kristen
I am working with Virtuoso version IC6.1.3.500.13 and mentor 2011 (also have access to older versions and have previously used 2009). The pdk I am working with apparently has a known bug (confirmed by the foundry) such that the extracted transistors are always incorrect - instead of a 10 finger fet with total width 8um, for example, the tool extracts 10 transistors, 1 finger each, EACH with a width of 8 um. does anyone have any suggestions on how to manually fix this so i can run simulations on the extracted circuits using the config view? I have tried 1. manually editing the calibre view to ensure the correct width for each fet - i then get the error Error (OSSHNL-109) : the cell view, [name of calibre view], has been modified since the extraction. Re-extract the design (File->Check and Save menu option) for schematic cell views to correct this error. 2. copying and pasting extracted circuit to a schematic view - i then get the error ERROR (ADE-6026): Unable to create the netlist due to failure of the following operating system command "cat: ihnl/cds1/netlist: No such file or directory". Thanks.
Parents
  • kristen
    Hi Quek,

    thanks again for your reply. I was mistaken, the issue is in my input.scs file - but my guess is it's not reading my extracted.scs file correctly?

    the error I get, when i use either a symbol view or spectre view of the subckt, is : ERROR(SFE-678) "input.scs" 15: statement is not in spectre form. use 'simulator lang=spice' to introduce spice language sections.

    the line in question is:
    I5 (0 net4 net2 net28) my_subckt

    when i use a different view i noticed that the subckt netlist is basically incorporated into the input.scs netlist, but this is not the case with my extracted subckt. the extension of my extracted netlist is .scs. should i be using the spice netlist reader (spp)? i had seen it mentioned on a forum but when i try to use this, i get an error "unable to run circuit preprocessor. illegal seek". i'm not sure if this is an error with the cadence installation or something else.

    Thanks for all your help, I really appreciate it.
Reply
  • kristen
    Hi Quek,

    thanks again for your reply. I was mistaken, the issue is in my input.scs file - but my guess is it's not reading my extracted.scs file correctly?

    the error I get, when i use either a symbol view or spectre view of the subckt, is : ERROR(SFE-678) "input.scs" 15: statement is not in spectre form. use 'simulator lang=spice' to introduce spice language sections.

    the line in question is:
    I5 (0 net4 net2 net28) my_subckt

    when i use a different view i noticed that the subckt netlist is basically incorporated into the input.scs netlist, but this is not the case with my extracted subckt. the extension of my extracted netlist is .scs. should i be using the spice netlist reader (spp)? i had seen it mentioned on a forum but when i try to use this, i get an error "unable to run circuit preprocessor. illegal seek". i'm not sure if this is an error with the cadence installation or something else.

    Thanks for all your help, I really appreciate it.
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