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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: 7.2.0

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

OS AND VERSION: Windows 10

REPORTED BY: Randy Wolff, Siemens

DATE: May 28, 2023

DESCRIPTION OF BUG:

For IBISCHK720, an Error should be reported for an illegal signal_type NC

The IBIS Version 7.2 Specification on page 378 states,

******
If a pin has signal_type NC, then the designator pin and signal_name
shall not appear on any of the terminal lines of any EMD Model.
******

For IBIS Version 7.2 files, IBISCHK720_64 generates two Caution message:

C6742 - EMD Module BUG242 [EMD Group] G1 [EMD Set] S2 [EMD Model] M1 : NC Pin 'U6.K9' used as an I/O
C6742 - EMD Module BUG242 [EMD Group] G1 [EMD Set] S1 [EMD Model] M1 : NC Pin '4' used as an I/O

The FIRST Caution Message for U6.K9 should be changed to new Error Message.


INSERT IBIS FILE DEMONSTRATING THE BUG:

**********
bug242.emd
**********

[IBIS Ver]      7.2
[File Name]     bug242.emd
[File Rev]      0.1
[Date]          May 28, 2023
|
[Begin EMD]     BUG242
[Manufacturer]  None
| 
[Number of EMD Pins] 4
[EMD Pin List] signal_name signal_type  bus_label
1   Data
2   VDD        POWER  
3   VSS        GND    
4   NC1        NC           | <----- Keep as a Caution
[End EMD Pin List]

[EMD Parts]
P7  dram.ibs   DDR4_8Gb_x8
[End EMD Parts]

[EMD Designator List]
U6             P7
[End EMD Designator List]

[Designator Pin List] signal_name  signal_type  bus_label
U6.K9  NC1     NC           | <---- Change C6742 to NEW Error message
U6.N9  Data
[End Designator Pin List]
|
[EMD Group]    G1
S1  NA
S2  NA
[End EMD Group]      
[End EMD]

[EMD Set]      S1
[EMD Model]    M1 
File_TS        test.s2p
Number_of_terminals = 3
1   Pin_I/O           pin_name       1
2   Pin_I/O           pin_name       4
3   A_gnd
[End EMD Model]
|
[End EMD Set]
[EMD Set]     S2
[EMD Model]   M1
File_TS       test.s2p
Number_of_terminals = 3
1   Pin_I/O           pin_name       U6.N9
2   Pin_I/O           pin_name       U6.K9 | <----- Change
                                           | C6742 to NEW Error Message
3   A_gnd
[End EMD Model]
[End EMD Set]
|
[End]


***********************************************************
dram.ibs (Same file as in Version 7.1.1 QA suite
***********************************************************
[IBIS Ver] 7.1
[File Name]    dram.ibs
[File Rev]     1.0
[Date]         June 2019
[Source]       Atul
|
|
|******************************************************************************
|
[Component]   DDR4_8Gb_x8
[Manufacturer]    Test
[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
K9     TEST1             POWER                  0.0      8n          5p
M8     TEST2             GND                    0.0      8n          5p
N9     TEST3             Dummy                  0.0      8n          5p
|
|
|
[Model] Dummy
Model_type Input
Vinh = 2.0
Vinl = 0.8
C_comp 0.1p 0.1p 0.1p
|
| Other model subparameters are optional
|
|                 typ     min    max
[Voltage Range]   3.3     3.0    3.6
|
|
[End]


************************************************************
test.s2p (More complete file than in Version 7.1.1 QA suite)
************************************************************
!2-port network, S-parameter
!Default MA format, GHz frequencies, 50 ohm reference, S-parameters
[Version] 2.0
#
[Number of Ports] 2
[Two-Port Data Order] 12_21
[Number of Frequencies] 2
[Network Data]
0.0   1.0 0.0   0.0 0.0 0.0 0.0 1.0 0.0
1.0   1.0 0.0   0.0 0.0 0.0 0.0 1.0 0.0
[End]


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******************** BELOW FOR ADMINISTRATION AND TRACKING *******************
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BUG NUMBER:     242

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

PRIORITY: [HIGH, MEDIUM, LOW]                               MEDIUM

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

FIXED VERSION:                                              7.2.1

FIXED DATE:                                                 December 8, 2023


NOTES ON BUG FIX:
Classified at the June 2, 2023 IBIS Open Forum Meeting
Add the change for [IBIS Ver] 7.2 and higher.
To be fixed in the next release


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