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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 ibischk-bug@vhdl.org.

A list of reported bugs will be maintained on vhdl.org.

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PARSER VERSION NUMBER: 3.2.2 (preliminary)

PLATFORM (SPARC, HP700, PC, etc.): RS6000

OS AND VERSION: AIX 1 (4.1.5)

REPORTED BY: Michael Mirmak, Intel Corp.

DATE: May 9, 2000

DESCRIPTION OF BUG:

The current parser allows models of type output to include Vinh and Vinl
values without generating a warning or error message.  Some indication -- 
most appropriately, a warning -- should be made of the inconsistency between

the buffer type and input threshold data for such models.

An example:

WARNING (line  xxx) - Input thresholds (Vinh and Vinl) are meaningless in
buffers that can't be inputs (Model_type Output, 3-state, Open_drain, etc.)


This bug also applies to DOS32 IBISCHK3 v3.2.5.


INSERT IBIS FILE DEMONSTRATING THE BUG:

|***********************************************************************
|
[IBIS Ver]       3.2
[File Name]      bug42tst.ibs
[File Rev]       0.0
[Date]           09-May-2000
[Source]         File created from specification
|
[Disclaimer]
    (C) Copyright 2000 Intel Corp.
    All rights reserved
    This model is for demonstration purposes only,
    to show Vinh and Vinl
|
[Component]      GENERIC_IBIS
[Manufacturer]   Intel Corp.
|
[Package]
|                typ        min        max
R_pkg            6.0mO      5.0mO      7.0mO
L_pkg            5.0nH      2.0nH      8.0nH
C_pkg            1.0pF      0.5pF      1.5pF
|
|
[Pin]     signal_name      model_name    R_pin    L_pin    C_pin
    1     TestSignal       TestModel          
|
|************************************************************************
|
[Model]          TestModel
Model_type       Output
Polarity         Non-Inverting
Cref = 10.0pF
C_comp                    5.00pF            4.00pF            6.00pF
|
|
[Temperature Range]       27.00             100.00            0.00
[Voltage Range]           3.30V             3.00V             3.60V
[Pulldown]
| voltage     I(typ)              I(min)              I(max)
|
  -3.3000      -20.0A           -25.00A             -15.00A
   0.0000       0.0A            -5.00nA              5.00nA
   3.3000       40.00mA          32.00mA             48.00mA 
   6.6000       10.0A            12.0A                8.00A
|
[Pullup]
| voltage     I(typ)              I(min)              I(max)
|
  -3.3000       10.00A              12.00A              8.00A
   0.0000        0.0uA             -0.30uA              0.30uA
   3.3000      -65.00mA            -40.00mA            -80.00mA
   6.6000      -22.00A             -25.00A             -19.00A
|
[Ramp]
| variable       typ                 min                 max
dV/dt_r          0.35/1.6n        0.25/1.8n            0.45/1.5n
dV/dt_f          0.35/1.6n        0.25/1.8n            0.45/1.5n
R_load = 50.000
|
|
[End]
|
|Parser 3.2.2 responds with
|
|IBISCHK3 V3.2.2(preliminary)
|
|Checking bug42tst.ibs for IBIS 3.2 Compatibility...
|
|Errors  : 0
|
|File Passed
|
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******************** BELOW FOR ADMINISTRATION AND TRACKING*******************
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BUG NUMBER: 42

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

PRIORITY: [HIGH, MEDIUM, LOW]                               LOW

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

FIXED VERSION:  Version 3.2.6

FIXED DATE:     January 2, 2001

NOTES ON BUG FIX: Processed at May 26, 2000 IBIS Meeting, but decision
                  to accept or reject is pending.  At June 30, 2000 meeting,
                  wording on message is still pending.

                  At the August 25, 2000 meeting the original Warning message
                  wording was replace by the new wording in the report above.
                  The original wording is:

WARNING (line  xxx) - Vinh and Vinl data should not be present in buffers of
Model_type Output.

                  This is now forwarded to be fixed.

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