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Date:	Tue, 27 Aug 2013 16:01:34 +0400
Message-ID:	<CAMvDHVD-CK77EbE7-LQUqQS-u0LJquX2U+3xAyr-J7ur8ikF4Q@mail.gmail.com>
Subject:	Re: [geda-user] Tutorial: VHDL with gEDA
From:	Vladimir Zhbanov <vzhbanov AT gmail DOT com>
To:	geda-user AT delorie DOT com
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2013/8/27, myken <myken AT iae DOT nl>:
...
> Absolutely clear. I understand your point. Now my question is, is the
> gnetlist vhdl backend incorrect? Because it translates your example as.

I don't think so. It seems to be old and incomplete since it uses
non-standard attribute values and there is no bus support. It is
not well documented either. (But I hope your tutorial could fill
this gap.)

> ENTITY xor IS
>      PORT (
>          input_port : OUT Std_Logic);
> END xor;
>
> As a result the XOR will not work in vhdl.

First I should specify that I don't use vhdl myself.
However, I followed your tutorial without modifying sources by
your Perl script, and it gave me the result as follows:

ENTITY xor1 IS
    PORT (
        Bi : in Std_Logic;
        Ai : in Std_Logic;
        Qo : out Std_Logic);
END xor1;

Is it right? (The result is compiled by ghdl without errors.)

I also noticed that you don't set the pinseq attributes but AFAIK
gnetlist uses them in its hidden job.

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