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BIRD ID#:        114
ISSUE TITLE:     IBIS-AMI Definition Clarifications
REQUESTER:       Arpad Muranyi, Mentor Graphics, Inc.
DATE SUBMITTED:  August 24, 2010
DATE REVISED:    
DATE ACCEPTED BY IBIS OPEN FORUM:  

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STATEMENT OF THE ISSUE:

Section 6c of the IBIS v5.0 specification does not define several items
which leaves the parser developer, EDA vendor and model maker with
unanswered questions.

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Remove the following text from the beginning of the "DEFINITIONS" section
on pg. 140:

| DEFINITIONS: 
| 
| The following 'Usage, Type Format and Default definitions are used 
| throughout the following sections. 


Add to the beginning of the "DEFINITIONS" section the following text on
pg. 140:

| DEFINITIONS and RULES: 
|
| The information provided in this section is applicable to the content of
| the parameter definition file (.ami).   Note that the rules described
| below deviate from the rules for .ibs files.
|
| The content of the parameter definition file (.ami) is case sensitive.
|
| Only the pipe ("|") character is acceptable as a comment character
| regardless of what the calling IBIS file uses for the comment character.
|
| The line length of the parameter definition file (.ami) is not limited
| to a specific number of characters.  The Description string may span
| multiple lines.  It is recommended that the text contained in the
| Description string should not exceed 120 characters per line.
|
| The first token in the file may contain an arbitrary string and does not
| need to match the file name.
|
| A white space in the parameter definition file (.ami) may be one or more
| space, tab, and/or line termination characters.
|
| Integers are numbers which are written without a fractional or decimal
| component, and fall within -2147483648 and 2147483647.  For example, 65,
| 7, and -756, 123e3 are integers, 1.6, 123e99 are not integers.
|
| Float numbers are in general represented by a floating point number that
| may be scaled using a decimal exponent.  A floating point number is
| represented by the significant digits, and optionally a sign and decimal
| point.  For example, -1.23e-3, 123e-3, 1.23, 1 are all of type float.
|
| String is a sequence of characters enclosed in double quotes (").  No
| double quotes are allowed inside the string literals.
|
| Scaling factors or suffixes, such as p, n, etc... are not permitted in
| the parameter definition file (.ami).  Scientific and floating point
| notation is permitted.

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ANALYSIS PATH/DATA THAT LED TO SPECIFICATION

Most of these questions were raised by the IBIS v5.0 parser's developer
during the development of the parser, but other discussions in the IBIS-ATM
Task Group revealed additional questions and issues.  The solutions were
defined during the IBIS v5.0 parser developement project and in subsequent
IBIS-ATM meetings.

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ANY OTHER BACKGROUND INFORMATION:

An Adobe PDF version is available at:

http://www.eda.org/ibis/birds/bird114/bird114.pdf

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