VERSION1.1Y 4 OF 4

            5.00V 0.00pA NA NA -> V/I table increasing (0 > -680)
        [Pullup]
        | Voltage I(typ) I(min) I(max)
           -5.00V 38.14mA 27.33mA 54.76mA
           -4.50V 37.49mA 26.87mA 53.79mA
           -1.00V 17.13mA 12.81mA 23.55mA
           -0.50V 9.26mA 6.96mA 12.66mA
            0.00V 13.57pA 613.51pA 11.04pA
          100.00mV -1.96mA -1.48mA -2.67mA
          200.00mV -3.87mA -2.92mA -5.27mA
          500.00mV -9.26mA -6.96mA -12.66mA
            1.80V -26.79mA -19.79mA -37.25mA
            1.90V -27.74mA -20.46mA -38.64mA
            4.60V -37.62mA -26.97mA -54.00mA
            4.70V -37.76mA -27.06mA -54.20mA
            5.00V -38.14mA -27.33mA -54.76mA
           10.00V -44.52mA -33.72mA -61.15mA -> V/I table decreasing
        [POWER_clamp]
        | Voltage I(typ) I(min) I(max)
           -5.00V 1.05A NA NA
           -1.10V 79.00mA NA NA
           -1.00V 54.00mA NA NA
         -900.00mV 29.00mA NA NA
         -800.00mV 10.40mA NA NA
         -200.00mV 0.00uA NA NA
         -100.00mV 0.00uA NA NA
            0.00V 0.00pA NA NA -> V/I table decreasing

  3) IF the model is any of the following types:(Input_ECL, Output_ECL, I/O_ECL)
           {
           Verify that:
             - Pullup V/I table has equal or decreasing current
             - POWER_clamp V/I table has equal or decreasing current
             - Pulldown V/I table has equal or decreasing current
             - GND_clamp V/I table has equal or increasing current
           }
        ELSE
           {
           Verify that:
              - Pullup V/I table has equal or decreasing current
              - POWER_clamp V/I table has equal or decreasing current
              - Pulldown V/I table has equal or increasing current
              - GND_clamp V/I table has equal or increasing current
           }

     Note: This specifically allows constant current generators and 0 current
           tables. 0 current tables may be used to indicate table is unused.

  4) If any table verification fails report the following error message:
     'Error found in xxx V/I table at line number nnn!'.
      Where xxx is one of the following Pullup, Pulldown, POWER_clamp, GND_clamp.
      Where nnn is the line number.

   ***************************************************************************
Change 3- Add a header comment statement at the TOP of the IBIS_CHK program
          to insure that new changes to the IBIS_CHK program donot break tests
          that worked in old MAJOR versions. This approach makes the program
          larger however it insures the parser always works the same on older
          versions of IBIS. This apporach uses more memory, but has the reward
          of low maintaining costs. The IBIS_CHK program is very small and
          would not be effected by this until many revisions have occured.
   ***************************************************************************
NOTICE TO ANY PERSON MODIFING THIS PROGRAM!
-------------------------------------------
This program SHALL NOT BE MODIFIED unless there is an associated IBIS BIRD.
Said BIRD shall be agreed upon by IBIS committee vote. Only the currently
elected IBIS_CHK 'czar and programmer' is allowed to modify the source code.
The present CZAR is Jon Powell (April 1994). The IBIS committee may also
hire programmers from time to time to make major changes to the source code.

Note: Source licensees are free to modify their own copies of this source code
in any way they choose. Source licensees shall not redistribute the source code
modified or otherwise. Source licensing is available from the IBIS open forum.
The IBIS open forum is non-profit.

The code for each MAJOR version of the IBIS_CHK program SHALL NOT BE MODIFIED
when adding code for the next version of the IBIS specification. Instead
completely new code for all functions and features shall be created. This
may require duplication of numerous functions.

Each function shall be preceded by VXX_ where XX is the MAJOR version of the
IBIS
specification which is being parsed and tested. A MAJOR version would for
example be 1.x going to 2.x. A MINOR version would for example be 1.1 to 1.2.
Functions using the above syntax would look as follows: V01_GetValue

MINOR revisions DO NOT required new code.

Startup code shall be provided at the top of the program which reads the
version number from the IBIS file and runs the portion of the program
corresponding
to that MAJOR version. Code which is used only by the program startup function
is not duplicated.

******************************************************************************
Received on Fri May 6 10:57:55 1994