Subject: Re: problem with numeric_bit
From: Tim McBrayer (tmcbraye@innoveda.com)
Date: Thu Oct 18 2001 - 08:03:38 MDT
On Thu, Oct 18, 2001 at 04:50:14PM +0300, Tuukka Toivonen wrote:
> On Thu, 18 Oct 2001, Colin Marquardt wrote:
>
> >Tuukka Toivonen <tuukkat@ees2.oulu.fi> writes:
> >> It looks I finally found the exact line which causes this, it is
> >> constant NAU: UNSIGNED(0 downto 1) := (others => '0');
> >
> >You probably wanted
> > constant NAU: UNSIGNED(1 downto 0) := (others => '0');
>
> No, I didn't. That code is *official* from IEEE, not written by me.
> It is *standard*.
Right. This is the standard's definition for a null range for an UNSIGNED
vector. It's that way on purpose, and is legal VHDL.
-- Tim McBrayer (508) 303-5333 Engineering Manager, Simulation contact me for my PGP key Innoveda Inc. tmcbrayer@innoveda.com
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