Re: [sv-bc] Mantis 1573

From: Gordon Vreugdenhil <gordonv_at_.....>
Date: Fri Oct 19 2007 - 10:31:38 PDT
Steven Sharp wrote:
[...]

> This idea that port coercion is a deliberate attempt by the tool to
> fix an incorrect port direction was a figment of someone's imagination.
> What happened is that Verilog-XL collapses ports whenever it can, for
> performance reasons.  It does this independently of the declared or
> correct port direction.  When it does this, the port becomes an inout.

I agree -- the view that collapsing can be expressed as "port coercion"
poses some real issues.  I think that confusion also manifests itself
in the modport discussion.  In the past I've also raised issues with
force semantics as well if you don't really think about nets as
collapsed.

Gord.
-- 
--------------------------------------------------------------------
Gordon Vreugdenhil                                503-685-0808
Model Technology (Mentor Graphics)                gordonv@model.com


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Received on Fri Oct 19 10:32:00 2007

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