[ibis-macro] Re: Table Clarification BIRD
- From: "Muranyi, Arpad" <Arpad_Muranyi@xxxxxxxxxx>
- To: "IBIS-ATM" <ibis-macro@xxxxxxxxxxxxx>
- Date: Thu, 24 Mar 2011 11:54:21 -0700
If I remember correctly, we spent a considerable time
on this topic in the last ATM teleconference. In that
discussion I think I heard Walter state something
along the lines of who cares, the EDA tool just copies
everything to the parameter string for DLL and doesn't
need to know whether the first column is a row number
or useful data.
Then the question was raised, how about (Usage Info)
in which case the table is to be consumed by the tool,
and in that case the tool would have to know what the
first column is.
This brought us to the topic of syntax consistency and
ease of parsing, etc...
But this also raises another issue, namely whether the
Model_Specific parameters should ever be (Usage Info).
Note that this is not a problem with Reserved_Parameters,
which supposed to be well defined in the spec.
Comments?
Arpad
==========================================================
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Walter Katz
Sent: Thursday, March 24, 2011 1:31 PM
To: ambrishv@xxxxxxxxxxx; 'IBIS-ATM'
Subject: [ibis-macro] Re: Table Clarification BIRD
Ambrish,
Good point, I think that that this would have to be modified as well
specifically for Table variables.
An alternative is to require all table rows to have a first field that
would be essentially a row number as we defined for the Jitter and Clock
PDF examples.
Walter
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Ambrish Varma
Sent: Thursday, March 24, 2011 1:44 PM
To: IBIS-ATM
Subject: [ibis-macro] Re: Table Clarification BIRD
Walter,
I was going through your Table BIRD and found this example and the
AMI_parameters_in string on the last page:
"(fwd (Usage In) (Type Float)
(Table
(-0.169324 1.40308 0.33024 )
(-0.738358 -0.293473 -0.06912 )
)
)
The simulator shall include fwd in the AMI_parameters_in strings as:
(my_root ... (fwd (-0.169324 1.40308 0.33024 )
(-0.738358 -0.293473 -0.06912 )
)
)"
I noticed that there are no row names for the 2 rows in the table.
I was going through your mail from earlier (attached) where you point
out the rules in the IBIS spec (pages 186/187) and say that
"
Note 2. above:
| 2. Parameter name/value pairs are always enclosed in parentheses, with
the
| value separated from the name by white space.
.....
The following example that you propose for multi-row tables violates
this rule:
(name (a11 a12 a13) (b11 b12 b13))
"
Is this inconsistent with the rules in the spec? Or am I mistaken?
Thanks,
Ambrish.
Ambrish Varma | Member of Consulting Staff
P: 978.262.6431 www.cadence.com <http://www.cadence.com>
________________________________
From: ibis-macro-bounce@xxxxxxxxxxxxx
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Walter Katz
Sent: Wednesday, March 23, 2011 3:08 PM
To: IBIS-ATM
Subject: [ibis-macro] Re: Table Clarification BIRD
All,
Thanks very much to Arpad for reviewing this and his suggested changes.
I am enclosing an updated copy of this BIRD.
Walter
From: Walter Katz [mailto:wkatz@xxxxxxxxxx]
Sent: Wednesday, March 23, 2011 12:42 PM
To: IBIS-ATM
Subject: Table Clarification BIRD
All,
I am enclosing an alternative Table Clarification BIRD
Walter
Walter Katz
wkatz@xxxxxxxxxx
Phone 303.449-2308
Mobile 720.333-1107
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