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BIRD ID#:        104
ISSUE TITLE:     [Submodel] Name Limit Extension
REQUESTER:       Michael Mirmak, Intel Corp.
DATE SUBMITTED:  May 1, 2006
DATE ACCEPTED BY IBIS OPEN FORUM:  

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STATEMENT OF THE ISSUE:

BIRD93.1 extended signal and model names for IBIS 4.2, increasing the allowed 
string name lengths from 20 to 40 characters.  Due to an oversight, the 
[Add Submodel] and [Submodel] keywords were not affected by BIRD93.1, though
the need for extending [Model] names applies also to [Submodel] names.

The changes below permit extended (40 character) [Submodel] names by matching
the syntax requirements for [Submodel] names to those for [Model] names.

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STATEMENT OF THE RESOLVED SPECIFICATIONS:

Changes are noted in the relevant sections below by |* lines:

In section 6a, under [Submodel], replace:

| Keyword: [Submodel]
| Required: No
| Description: Used to define a submodel, and its attributes.
| Sub-Params: Submodel_type
| Usage Rules: Each submodel must begin with the keyword [Submodel]. The
| submodel name must match the one that is listed under an
| [Add Submodel] keyword and must not contain more than 20
| characters. A .ibs file must contain enough [Submodel]
| keywords to cover all of the model names specified under the
| [Add Submodel] keyword.

with:

| Keyword: [Submodel]
| Required: No
| Description: Used to define a submodel, and its attributes.
| Sub-Params: Submodel_type
| Usage Rules: Each submodel must begin with the keyword [Submodel]. The
| submodel name must match the one that is listed under an
|* [Add Submodel] keyword and must satisfy all the syntactic requirements
|* for [Model] names.  A .ibs file must contain enough [Submodel]
| keywords to cover all of the model names specified under the
| [Add Submodel] keyword.

No change is required to the [Add Submodel] keyword, as the specification
requires a match between [Submodel] and [Add Submodel] arguments.

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ANY OTHER BACKGROUND INFORMATION:

BIRD93.1 affects the following keywords directly:
[Model]
[Model Selector]
[Pin]
[Series Pin Mapping]

This BIRD changes the parser behavior for the following keywords:
[Add Submodel]
[Submodel]

The following keywords would need updated parser treatment for
BIRD93.1, though the specification text is not changed:
[Driver Schedule]
[Test Data] (for the driver-related subparameters)
[Test Load] (for the receiver-related subparameters)

Note that the [Pin List] keyword for EBD files carries a signal_name field,
but that the length there is not explicitly stated, nor is matching to
IBIS signal name requirements mentioned.

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