Subject: Re: Initial Blocks fail with Synopsys Tools
From: Krishna Garlapati (krishna@synplicity.com)
Date: Mon Oct 08 2001 - 10:31:00 PDT
Incomplete sensitivity lists are flagged as warnings,
in Synplify too.
Implimenting powerup values is pretty tricky in synthesis.
A testbench might place an unrealistic value for powerup
which might not be implimentable in gate level.
Paul Graham wrote:
>
> >
> > I was very surprised to learn that Synplicity ignored initial blocks. I
> > consider this to be a serious flaw in the Synplicity tools.
>
> As someone pointed out, Synplicity ignores initial blocks with a warning.
> Ambit also ignore initial blocks with a warning. This could result in
> simulation mismatches, but not necessarily. There are other situations that
> could result in simulation mismatches for which Ambit also issues a warning,
> not an error. For instance, an incomplete sensitivity list is flagged as a
> warning. What do other tools do?
>
> Paul
-- - Krishna. Synplicity Inc. (408)215-6152
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