Re: [1076.1] Proposals for new features open for discussion

From: Alain Vachoux <alain.vachoux_at_.....>
Date: Wed May 16 2007 - 04:18:40 PDT
Peter,

Thank you. The full P1076-2007/D3.4 draft LRM is still under restricted, 
non public, access in Accellera web site. I can however get a copy for 
people in the WG who will review the changes, namely those who 
contributed to the 1076.1 LRM.

Best regards,
Alain

Peter Ashenden wrote:
> Alain,
> 
> Annex D of the draft contains a list of changed sections. I've extracted
> those pages from P1076-2007/D3.4 for your information.
> 
> Beyond that, Jim Lewis and I are preparing a book for publication describing
> the new features. If should be published around October this year.
> 
> Hope this helps.
> 
> Cheers,
> 
> PA
> 
> --
> Dr. Peter J. Ashenden         peter@ashenden.com.au
> Ashenden Designs Pty. Ltd.    www.ashenden.com.au
> PO Box 640                    VoIP: sip://0871270078@sip.internode.on.net
> Stirling, SA 5152             Phone: +61 8 7127 0078
> Australia                     Mobile: +61 414 70 9106
> 
> 
>> -----Original Message-----
>> From: Alain Vachoux [mailto:alain.vachoux@epfl.ch] 
>> Sent: Wednesday, 16 May 2007 18:14 PM
>> To: Peter Ashenden
>> Cc: '1076.1 mailing list'
>> Subject: Re: [1076.1] Proposals for new features open for discussion
>>
>>
>> Peter,
>>
>> Is it possible to get the complete list of changes to VHDL without 
>> having to browse through the P1076-2007 LRM to find them out?
>>
>> Thanks and regards,
>> Alain
>>
>> Peter Ashenden wrote:
>>> Alain,
>>>
>>> It might be worth having the VHDL-AMS WG review the changes 
>> to VHDL in 
>>> P1076-2007 to see how they affect the AMS features. Many of the 
>>> changes are independent of AMS, but others are not. For example, 
>>> changes to the way constraints apply to composite types 
>> should also be 
>>> mirrored in composite natures. It would be worth finding out any 
>>> issues early, so that they can be addressed in good time for a 
>>> revision of 1076.1.
>>>
>>> Cheers,
>>>
>>> PA
>>>
>>> --
>>> Dr. Peter J. Ashenden         peter@ashenden.com.au
>>> Ashenden Designs Pty. Ltd.    www.ashenden.com.au
>>> PO Box 640                    VoIP: 
>> sip://0871270078@sip.internode.on.net
>>> Stirling, SA 5152             Phone: +61 8 7127 0078
>>> Australia                     Mobile: +61 414 70 9106
>>>
>>>
>>>> -----Original Message-----
>>>> From: owner-vhdl-ams@server.eda.org 
>>>> [mailto:owner-vhdl-ams@server.eda.org] On Behalf Of Alain Vachoux
>>>> Sent: Wednesday, 16 May 2007 1:59 AM
>>>> To: Muranyi, Arpad
>>>> Cc: 1076.1 mailing list
>>>> Subject: Re: [1076.1] Proposals for new features open for 
>> discussion
>>>>
>>>> Arpad,
>>>>
>>>> It is true that the 1076.1-2007 standard is based on 
>> 1076-2002 which 
>>>> does not support encryption capabilities. We'll need another IEEE 
>>>> ballot to formally have 1076.1 based on 1076-2007 (and to formally
>>>> include the 
>>>> encryption mechanism in VHDL-AMS), which may not happen very 
>>>> soon. This 
>>>> is because there are two reasons to proceed to an IEEE 
>>>> ballot, whichever 
>>>> comes first:
>>>> 1) To have significant changes or additions to bring to the 
>>>> standard, or
>>>> 2) To reach the 5-year deadline for reaffirmation.
>>>> Meanwhile, I expect that 1076-2007 will be released and that 
>>>> tools will 
>>>> support it more or less rapidly, so VHDL-AMS users will also 
>>>> be able to 
>>>> use encryption facilities. I'm of course assuming that the 
>> 1076-2007 
>>>> spec is appropriate for 1076.1 as it is.
>>>>
>>>> Best regards,
>>>> Alain
>>>>
>>>> Muranyi, Arpad wrote:
>>>>> Alain,
>>>>>
>>>>> I wonder whether this is the right approach.  I mean to 
>> wait for the
>>>>> tool vendors to implement it first and then put it in the spec.  
>>>>> Shouldn't it be the other way around?
>>>>>
>>>>> Arpad ===========================================================
>>>>>
>>>>> -----Original Message-----
>>>>> From: Alain Vachoux [mailto:alain.vachoux@epfl.ch]
>>>>> Sent: Tuesday, May 15, 2007 8:43 AM
>>>>> To: Mirmak, Michael
>>>>> Cc: olivier.rolland@systemsvip.com; Muranyi, Arpad; 1076.1
>>>> mailing list
>>>>> Subject: Re: [1076.1] Proposals for new features open for 
>> discussion
>>>>> Michael,
>>>>>
>>>>> As I replied to Arpad, VHDL 1076.1 will naturally endorse the VHDL
>>>>> 1076-2007 encryption scheme. As far as we can see, there is
>>>> nothing in
>>>>> VHDL-AMS that would hinder the use of the protection 
>> mechanism. Now
>>>>> it is a question of time until EDA tools are upgraded
>>>> to support the
>>>>> new encryption capabilities.
>>>>>
>>>>> Best regards,
>>>>> Alain
>>>>>
>>>>> Mirmak, Michael wrote:
>>>>>> All,
>>>>>>  
>>>>>> Per Arpad's note, we are interested in seeing the 
>> encryption macro
>>>>>> language, currently in both the Accellera 1076 VHDL
>>>> updated draft and
>>>>>> the IEEE 1364 Verilog specification Annex H, "migrate
>>>> down" into the AMS
>>>>>> specifications.  IC vendors are concerned about IP
>>>> protection, and the
>>>>>> macro approach seems to be the most general-purpose way of
>>>> accommodating
>>>>>> IP protection while taking tool variations and national
>>>> policies into
>>>>>> account.  As IBIS now supports links to both AMS
>>>> languages, IC vendors
>>>>>> interested in distributing IBIS+AMS models for signal integrity 
>>>>>> simulations are becoming concerned.
>>>>>>  
>>>>>> The encryption-versus-scrambling debate has been fought on this
>>>>>> reflector and others like it before.  As it tends to
>>>> generate more heat
>>>>>> than light, I would like to avoid it entirely.  Can the macro 
>>>>>> approach be expanded to support both?
>>>>>>  
>>>>>> - Michael Mirmak
>>>>>>   Intel Corp.
>>>>>>   Chair, EIA IBIS Open Forum  
>>>>>>   http://www.eigroup.org/ibis/
>>>>>>   http://www.eda-twiki.org/ibis/
>>>>>>
>>>>>>
>> ---------------------------------------------------------------------
>>>>>> ---
>>>>>> *From:* owner-vhdl-ams@server.eda.org 
>>>>>> [mailto:owner-vhdl-ams@server.eda.org] *On Behalf Of
>>>> *Olivier Rolland
>>>>>> *Sent:* Monday, May 14, 2007 12:15 PM
>>>>>> *To:* Muranyi, Arpad; 1076.1 mailing list
>>>>>> *Subject:* Re: [1076.1] Proposals for new features open
>>>> for discussion
>>>>>> 1)  Make a standard encryption available in VHDL-AMS.
>>>>>>
>>>>>> I'm not sure about the added value of a standard 
>> encryption scheme,
>>>>>> since there is no real security behind it due to legal
>>>> limitations (root
>>>>>> key delivery to each country legal authorities and
>>>> mandatory decryption
>>>>>> of the model for compilation purpose which makes a memory
>>>> dump efficient
>>>>>> to hach the original VHDL-AMS code) and there is a
>>>> solution based over
>>>>>> scrambling avalaible which make VHDL-AMS encryption useless.
>>>>>> Regards. Olivier Rolland
>>>>>>  
>>>>>> Systems'ViP
>>>>>> (Boost your R&D efficiency, implement the functional
>>>> Virtual Prototyping
>>>>>> with us) <http://www.systemsvip.com> 	
>>>>>>
>>>>>> 	
>>>>>> *Dr. Olivier Rolland*
>>>>>> /CEO
>>>>>> / 	4 Rue Boussingault
>>>>>> F - 67000 Strasbourg
>>>>>> <http://www.systemsvip.com>
>>>>>> olivier.rolland@systemsvip.com
>>>> <mailto:olivier.rolland@systemsvip.com>
>>>>>> www.systemsvip.com <http://www.systemsvip.com> 	
>>>>>> tel: +33 671 128 130
>>>>>> fax: +33 874 761 346
>>>>>> mobile: +33 671 128 130
>>>>>>
>>>>>> 	
>>>>>>
>>>>>> This e-mail, including attachments, is intended for the
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>>>>>>
>>>>>>
>>>>>> Muranyi, Arpad a écrit :
>>>>>>> Alain,
>>>>>>>
>>>>>>> I wonder whether it was possible to add two topics to the list:
>>>>>>>
>>>>>>> 1)  Make a standard encryption available in VHDL-AMS.
>>>>>>> 2)  S-parameter support in the VHDL-AMS language through
>>>>>>>     some functions similar to "lpf".
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Arpad 
>>>>>>> ===============================================================
>>>>>>>
>>>>>>>   
>>>>>>>> -----Original Message-----
>>>>>>>> From: owner-vhdl-ams@server.eda.org 
>>>>>>>> [mailto:owner-vhdl-ams@server.eda.org] On Behalf Of 
>> Alain Vachoux
>>>>>>>> Sent: Tuesday, May 01, 2007 2:19 AM
>>>>>>>> To: 1076.1 mailing list
>>>>>>>> Subject: [1076.1] Proposals for new features open for dicussion
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> As mentioned in the minutes of the last working group 
>> meeting, a 
>>>>>>>> new page has been created on the P1076.1 web site at
>>>>>>>> http://www.eda-stds.org/vhdl-ams/wwwpages_new/new_features.html
>>>>>>>> which contains first drafts of proposals for new 
>> features in the 
>>>>>>>> VHDL-AMS language or new standard packages.
>>>>>>>>
>>>>>>>> The page includes the definition of the process we'll 
>> follow and 
>>>>>>>> the definition of the form of proposals. It also currently
>>>> lists three
>>>>>>>> proposals in various degrees of achievement:
>>>>>>>> - Mixed Netlists
>>>>>>>> - Table Data Types and Lookup Functions
>>>>>>>> - Requirements and Verification
>>>>>>>>
>>>>>>>> I highly encourage you to study these proposals, make
>>>> comments and
>>>>>>>> contribute to the proposals. The discussion can be done
>>>> in the 1076.1
>>>>>>>> mailing list vhdl-ams@vhdl.org and in the next working
>>>> group meetings.
>>>>>>>> Currently there is no deadline on when the discussion
>>>> should stop and
>>>>>>>> decisions have to be made in the working group.
>>>>>>>>
>>>>>>>> If you have other suggestions for new features, please consider
>>>>>>>> submitting me a document which is close to the form that
>>>> is defined in
>>>>>>>> the web page.
>>>>>>>>
>>>>>>>> Best regards,
>>>>>>>> Alain Vachoux
>>>>>>>>     
>>>>>>>   
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>>>

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Received on Wed May 16 04:19:03 2007

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