[ibis-macro] Re: Usage Out syntax rules

  • From: "Muranyi, Arpad" <Arpad_Muranyi@xxxxxxxxxx>
  • To: "ibis-macro@xxxxxxxxxxxxx" <ibis-macro@xxxxxxxxxxxxx>
  • Date: Fri, 16 Dec 2011 18:57:52 +0000

Mike,

That's news to me...  Could you back this up from the spec
or any BIRDs?

Common sense tells me that you can only make a selection
if you have multiple items to pick from.  First, with
Usage Out parameters the EDA tool doesn't anything into
the AMI model, so the model has nothing to select from.
Second, even if we pretend that a Usage Out parameter
supposed to be treated as if it was Usage InOut, where
the EDA tool passes something to the model and the model
returns something in response, when it comes to multi
valued parameters, such as Range, List, Increment and
Steps, the EDA tool can only pass one value to the AMI
model in the AMI_parameters_in string, so the model can
still not make a selection from multiple items.  (The
only way a model can get multiple values is through Table...).

This is based on BIRD 127.4:

|*              The EDA tool must process the content of the .ami file so that
|*               1) the 'Reserved_Parameters' and 'Model_Specific' branch
|*                  names and their associated open and close parentheses "()"
|*                  are not included in the AMI_parameters_in string, and
|*               2) the AMI Parameter branches with Usage In or Usage InOut
|*                  are converted to leaf/value pairs for the AMI_parameters_in
|*                  string, possibly incorporating user selections.  In this
|*                  conversion each AMI parameter branch name becomes a leaf
|*                  name in the AMI_parameters_in string and each leaf name
|*                  is followed by a white space, a value and a closing
|*                  parentheses ")".


Note:
#1) that "The EDA tool must process the content of the .ami file",
which indicates to me that the selection of one value from multi
valued parameters is done by the tool, not the model.

#2) that "each leaf name is followed by a white space, a value"
where value is singular, so the model has nothing to select from.

#3) the phrase "possibly incorporating user selections",
indicates to me that the multi valued parameters are
reduced to a single value either by the user making
a selection or the rules revolving around using <typ> or
Default.  This is why Default to me refers to the selection
mechanism and not to initializing variables in the EDA tool
and/or the AMI model.  Your understanding or interpretation
of the spec and BIRDs seems to be quite different from the
way I read them...

Thanks,

Arpad
============================================================

From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] 
On Behalf Of Mike Steinberger
Sent: Friday, December 16, 2011 12:33 PM
To: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Re: Usage Out syntax rules

Arpad-

The model makes the selection for parameters of Usage Out.

Mike S.

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