UWI format and branches, attributes

Discussion in 'Cadence' started by Poojan Wagh, Sep 12, 2011.

  1. Poojan Wagh

    Poojan Wagh Guest

    I have a verilog-AMS model and I keep getting the following error when
    using AMS with Spectre:

    Error found by spectre at time = 0 s during transient analysis `tran'.
    UWI supports only real waveforms.
    UWI supports only real waveforms.
    Error detected in writing data to file `tran.tran'.

    I am running with saveahdlvars set to "all". Through trial and error,
    I've found that if I remove the named branches from my Verillog-AMS
    file, the simulator runs.

    I'd like to keep the named branches in, as it's more readable. In
    fact, I'd much prefer setting saveahdlvars to "selected" and select
    only the Verilog-AMS variables I'm interested in. However, I don't see
    an cadence in Analog Artist to do so.

    Can anyone point me to a method to either select a different output
    waveform format (that doesn't use UWI) or to save only selected AHDL
    variables?
     
    Poojan Wagh, Sep 12, 2011
    #1
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  2. Poojan Wagh

    Poojan Wagh Guest

    I spoke too soon. It turns out that the UWI complaint was due to a
    string parameter that the cell inherited from a different view. Named
    branches work fine with UWI.
     
    Poojan Wagh, Sep 12, 2011
    #2
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