Re: 1364 vs. Verilog-XL

From: Shalom Bresticker (Shalom.Bresticker@motorola.com)
Date: Sun Feb 22 2004 - 02:52:15 PST

  • Next message: Shalom Bresticker: "Re: 1364 vs. Verilog-XL"

    Dennis,

    I have attached an IEEE P1364 Position Paper from 12.17.1993.
    It might be useful to review it.

    Like it or not, the Cadence and Synopsys simulators together have the vast majority of the market,
    according to the latest sales figures I have seen, and 1364 usually has no interest in deliberately contradicting
    their behavior where all of them agree.

    1364 can sometimes be more or less restrictive than them,
    but it needs a very good reason to do the opposite from them.

    There are mistakes in 1364. That is why the ETF exists.
    A classic mistake was in the definition of $readmem, for example.

    Yes, it would be nice if all of us had access to XL. It certainly does help me in my work that I have access
    to XL, NCV, and VCS. And if I had access to ModelSim, I would also check its behavior as well.
    If you want to donate me a copy, I'll be glad to report on its behavior as well.

    By the way, I don't know of any simulator which is today totally compliant to 1364-2001.
    And when I find bugs in the simulator behaviors, I report them to the vendors,
    and I request them to change their behavior to be compliant.

    Every time I find a discrepancy, I consciously consider and try to decide whether it is more logical for the tool to change or for the standard.

    Shalom

    "Brophy, Dennis" wrote:

    > I guess it is nice that the opportunity exists for one entity to match XL while the rest of the community must rely on the IEEE work as the standard's official record of behavior.
    >
    > I understand that these statements are true and an accurate reflection of many Verilog users, but only serve to weaken and tarnish this group and the profession since it only reads to me that the work of this technical group is to a great degree irrelevant.
    >
    > Maybe all members of the team should be given copies of XL to help in the cause of bringing the LRM into alignment with XL.
    >
    > -Dennis 

    --
Shalom Bresticker                           Shalom.Bresticker@motorola.com
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