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********************* IBIS GOLDEN PARSER BUG REPORT FORM *********************
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INSTRUCTIONS

To report a bug in the IBIS golden parser.  Please fill out the top part
of the following form and send the complete form to info@ibis.org.

A list of reported bugs is maintained at http://ibis.org/bugs/ibischk/ .

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PARSER VERSION NUMBER: 7.1.0

PLATFORM (SPARC, HP700, PC, etc.): PC

OS AND VERSION: Windows 10

REPORTED BY: Randy Wolff, Micron Technology; Bob Ross, Teraspeed Labs

DATE: August 17, 2022

DESCRIPTION OF BUG:

File_IBIS-ISS Error Message if Last Terminal of [C Comp Model] is Buffer_I/O

The last node is not required to be a reference for File_IBIS_ISS, unlike
File_TS.

The following Error message is generated for the test case below:

*************************************************************************
E6835 - Model bug236 The last terminal 3 cannot be of type Buffer_I/O or
Buffer_I for File_TS in [C Comp Model] defined on line 28
*************************************************************************

There is no File_TS in the test case, and bug236.ibs should have 0 Errors.

INSERT IBIS FILE DEMONSTRATING THE BUG:

**********
bug236.ibs
**********

|******************************************************************************
|
[IBIS Ver] 7.1
[File Name]    bug236.ibs
[File Rev]     1.0
[Date]         August17, 2022
[Source]       Bob Ross, Teraspeed Labs
|
|******************************************************************************
|
[Component]   BUG236    
[Manufacturer] Test_file
[Package]
|Variable     Typ               Min             Max
R_pkg         0                 0               0
L_pkg         8n                5n              10n
C_pkg         5p                4p              7p
|
[Pin] signal_name       model_name             R_pin    L_pin       C_pin
1     Power             POWER                  0.0      0.0         0.0
2     Gnd               GND                    0.0      0.0         0.0
3     Input             bug236                 0.0      0.0         0.0
|
[Model] bug236
Model_type Input
Vinh = 2.0
Vinl = 0.8
C_comp 0.0 0.0 0.0
|
[C Comp Model]
|
C_comp_model_mode Non-Driving
|
File_IBIS-ISS Typ bug236.iss bug236
|
Number_of_terminals  = 3
|
1 Pullup_ref
2 Pulldown_ref
3 Buffer_I/O       | False message that Terminal 3 must be a reference
|
[End C Comp Model]
|
[Voltage Range]   3.3     3.0    3.6
[C Comp Corner]   
C_comp 0.0      0.0         0.0
|
[End]

*****************************************************************************
bug236.iss
*****************************************************************************

.subckt bug236 1 2 3
.ends

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******************** BELOW FOR ADMINISTRATION AND TRACKING *******************
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BUG NUMBER:     236

SEVERITY: [FATAL, SEVERE, MODERATE, ANNOYING, ENHANCEMENT]  SEVERE

PRIORITY: [HIGH, MEDIUM, LOW]                               MEDIUM

STATUS: [OPEN, CLOSED, WILL NOT FIX, NOT A BUG]             CLOSED

FIXED VERSION: 7.1.1

FIXED DATE:    November 18, 2022


NOTES ON BUG FIX:
Classified at the September 9, 2022 IBIS Open Forum Meeting
To be fixed in the next release

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