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sweep variable "bs" in hb, then use VAR("bs") in output expression, not plot in ADEXL

Taoni
Hi,  

Maybe I found a bug recently.   (Cadence IC 615, mmsim 12.11 )

Firstly,  I sweep variable "bs" in hb, then use VAR("bs") in output expression, it can not plot when run in ADEXL,

but it can plot when run in Test Editor or ADE L.

if do not contain VAR() in output expression, it can plot correctly.

for example, it can plot:   getData("NF" ?result "hbnoise"),

but it fails when plot :  value(getData("NF" ?result "hbnoise") (660*VAR("bs")+150*(1-VAR("bs")))*(10**6) ) .

if I change  (660*VAR("bs")+150*(1-VAR("bs")))*(10**6)   to    660*(10**6),   it can plot again.

 so what is the solution ?

appreciate your helps.


Regards,

Tao
  • Taoni
    And I found another similar problem just in ADE L：
    if I sweep any variables in HB analysis, and I also use VAR("bs") in output expression,
    then I use parameteric analysis sweep variable "bs" in ADE L, those output expressions contain VAR("bs") also can not plot.
     
    no one meet this situation?
     
     appreciate your  good helps.
     
     

    Regards,

    Tao  
     
     
  • Andrew Beckett

    Tao,

    I've seen similar issues before - just haven't had a chance to test this and take a proper look. Which subversion of the IC tools are you using? (type getVersion(t) in the CIW and post what you get).

    I'm a bit busy at the moment but will try to get to this today or tomorrow if I can.

    Thanks,

    Andrew.

  • Taoni

    Hi Andrew,

    "sub-version  IC6.1.5-64bit.500.17"   

     

    Thanks.

     

    Regards,

    Tao 

  • mate0409

     Hi all,

     i can definetly confirm a strange behaviour when using the VAR("") syntax inside output expressions. For example if i sample a signal:

    value( mySignal VAR("CLK") ?period (VAR("CLK") / 2) ?xName "cycle")

    In ADE-XL i get an error message (unbound variable) and it fails. If i open this expression inside the calculator (small button next to the expression field) it evaluates correctly. But sometimes it works also directly inside ADE-XL. 

    I also found out that sometimes you doing a sweep the global variable is not a scalar value anymore. You can make the expression working again if using: value( VAR("bs") 1.0 ). Try to evaluate the variable inside the calculator and look if its a waveform or not.

  • alip

    I have the same problem.

    VAR("") works by itself in ADE-XL, but no inside an expression.

    The equations plot perfectly in ADE-L, just not ADE-XL. 

    Any solution? 

    I am using IC6.1.5-64b.500.15 MMSIM 12.1-ISR10 

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