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VHDL - Which version of VHDL supports delimited comments.

 
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Old 06-11-2008, 08:24 PM   #1
Default Which version of VHDL supports delimited comments.


Hi,
I am new to VHDL. The book "The designer's guide to VHDL", 3rd ed.
says:

VHDL-87, -93 and -2002
These versions of VHDL only allow single-line comments, not delimited
comments.

I am very curious which version VHDL allows delimited comments.


Thanks a lot.


fl
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Old 06-11-2008, 09:24 PM   #2
Mike Treseler
 
Posts: n/a
Default Re: Which version of VHDL supports delimited comments.
fl wrote:

> I am very curious which version VHDL allows delimited comments.


None, but many editors will
comment or uncomment a region.

-- Mike Treseler


Mike Treseler
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Old 06-11-2008, 10:06 PM   #3
HT-Lab
 
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Default Re: Which version of VHDL supports delimited comments.

"fl" <> wrote in message
news:6b3e7763-0ab6-4535-916b-...
> Hi,
> I am new to VHDL. The book "The designer's guide to VHDL", 3rd ed.
> says:
>
> VHDL-87, -93 and -2002
> These versions of VHDL only allow single-line comments, not delimited
> comments.
>
> I am very curious which version VHDL allows delimited comments.


It is supported in VHDL2006/7/8/9 or whatever it will be called. Currently
only Aldec supports part of this new standard.

It is the same as in C/C++, that is, /* ... */

Hans
www.ht-lab.com


>
>
> Thanks a lot.





HT-Lab
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Old 06-12-2008, 06:26 PM   #4
Tim McBrayer
 
Posts: n/a
Default Re: Which version of VHDL supports delimited comments.
Brian Drummond wrote:
> On Wed, 11 Jun 2008 22:06:25 +0100, "HT-Lab" <> wrote:
>
>> "fl" <> wrote in message
>> news:6b3e7763-0ab6-4535-916b-...
>>> Hi,
>>> I am new to VHDL. The book "The designer's guide to VHDL", 3rd ed.
>>> says:
>>>
>>> VHDL-87, -93 and -2002
>>> These versions of VHDL only allow single-line comments, not delimited
>>> comments.
>>>
>>> I am very curious which version VHDL allows delimited comments.

>> It is supported in VHDL2006/7/8/9 or whatever it will be called. Currently
>> only Aldec supports part of this new standard.
>>
>> It is the same as in C/C++, that is, /* ... */
>>
>> Hans
>> www.ht-lab.com
>>

>
> I seriously hope not. I would far rather it was the same as in Modula-2
> etc.


The draft standard for VHDL-2008 does support delimited comments in the
C/C++ style. It does not support nested delimited comments.

--
Tim McBrayer
x4229


Tim McBrayer
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