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Subject: inheriting minimum of 2 parent parameters
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m27315
Posts: 24
Online: User is Offline
8/10/2007 9:18 AM  
Hi,

I am trying to pass the minimum of 2 parent parameters to an instance.  Can I do this in AEL?  I have tried the following, but it bombs in Assura-LVS:
((pPar("A")
This works well in some SKILL based dry-runs of AEL:
env=aelEnvCreate('f)
aelEnvSetGlobals(env "A" 2 "B" 20)
aelEnvInterpret(env "((A==> "2.0"
;; swapping variable values
aelEnvSetGlobals(env "A" 20 "B" 2)
aelEnvInterpret(env "((A==> "2.0"
But, the spectre and Assura-LVS netlist parsers do not seem to understand this syntax.  What I am doing wrong?

BTW, I am trying to avoid adding another CDF parameter on the parent that stores the minimum of these 2 values, which is updated by a form callback.  This could be passed easily, but I'd like to avoid yet another CDF parameter and callback if at all possible.  Plus, I'd really like to understand AEL better, so I could avoid frivolous CDF parameters.

Thanks!
adbeckett
Posts: 248
Online: User is Offline
8/13/2007 2:20 PM  
Something got messed up in th formatting of your post, but I think the min and max functions should work in AEL, spectre and Assura. If it is supported in AEL (which it is), and spectre (which it is), then Assura should work too.

You should report this to Cadence customer support if it is misbehaving. I agree, you should avoid using callbacks for something like this (in fact avoid using them for any derived data generation, in my opinion).

Regards,

Andrew.
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Forums > Custom IC > Custom IC Electrical Design > inheriting minimum of 2 parent parameters


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