VHDL'87 vs VHDL'93 
Author Message
 VHDL'87 vs VHDL'93

Quote:

> Does anyone know where I can get more info on differences between
> VHDL'87 and VHDL'93?  Which one should I go for?  Thanks in advance
> for any feedback.

Peter Ashenden's book, "A Designer's Guide to VHDL," contains
information about the differences.

Which one you use depends on your tools.  If your tools support '93,
use it.  Most simulators support '93, but not all synthesis tools do.

Hope this helps,

Paul

--

OrCAD                  | www.orcad.com   |  wrote except for money."
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Sat, 02 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
Holy word!!!! The Orcad ver 6.10 simulator, support just a part of VHDL-87.
The ver 7.0 it isn't better. Be careful.

Riccardo



Tue, 05 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93
On Tue, 22 Dec 1998 11:27:37 -0800, "Les Boegemann"

Quote:

>IEEE 1076-1987 is the basis for virtually every simulation and synthesis
>product sold today.  IEEE 1076-1993 is an enhanced and updated version .

This isn't the case, and hasn't been for several years. It would be
really useful to have the correct information as a table in the FAQ -
Edwin??

To start with, here's a list of simulators/synthesisers that I
personally have used or tried over the last year or so:

Key:

Support: 87:  '87-only support
         93:  '87 and '93
         87+: '87, with some '93 syntax additions

Devpt:   Yes => vendor has announced '93 support within next year
         No  => vendor has not announced '93 support within next year

Type:    Sim   Simulator
         Syn   Synthesiser

Vendor     Product      Version      Sim/Syn  Support Devp
----------------------------------------------------------
MTI        ModelSim     4.7x/5.2x    Sim      93
Cadence    Leapfrog     ?            Sim      93
Viewlogic  Speedwave    ?            Sim      87      ?
Metamor    Metamor      ?            Syn      93
Synopsys   DC           ?            Syn      87      Yes
Synopsys   FPGA Express 2.1.x        Syn      87+     Yes
Exemplar   Leonardo     4.2.x        Syn      93
Exemplar   Spectrum     1998.2       Syn      93
Synplicity Synplify     ?            Syn      93

Does anyone have any corrections/additions?

Evan



Sun, 10 Jun 2001 03:00:00 GMT  
 VHDL'87 vs VHDL'93

Quote:

> Key:

> Support: 87:  '87-only support
>          93:  '87 and '93
>          87+: '87, with some '93 syntax additions

> Devpt:   Yes => vendor has announced '93 support within next year
>          No  => vendor has not announced '93 support within next year

> Type:    Sim   Simulator
>          Syn   Synthesiser

> Vendor     Product      Version      Sim/Syn  Support Devp
> ----------------------------------------------------------
> MTI        ModelSim     4.7x/5.2x    Sim      93
> Cadence    Leapfrog     ?            Sim      93
> Viewlogic  Speedwave    ?            Sim      87      ?
> Metamor    Metamor      ?            Syn      93
> Synopsys   DC           ?            Syn      87      Yes
> Synopsys   FPGA Express 2.1.x        Syn      87+     Yes
> Exemplar   Leonardo     4.2.x        Syn      93
> Exemplar   Spectrum     1998.2       Syn      93
> Synplicity Synplify     ?            Syn      93

> Does anyone have any corrections/additions?

Yes:

  Exemplar   Galileo      4.2          Syn      93
  MTI        ModelSimEE   5.1f         Sim      93
             (aka vsim)

Thanks for your posting.
I think there will be a lot less confusion once everyone
is using the 93 numeric_std functions and conversions.

      -Mike Treseler



Sun, 10 Jun 2001 03:00:00 GMT  
 
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