VHDL 2008 support in Modelsim?

[Anssi Saari]

Is Modelsim still not implementing VHDL 2008? I have some code with the
"new" if ... generate with else branch but Modelsim 10.1e doesn't seem
to support that. Or is it just that the Altera's Starter Edition doesn't
support that? I don't have a Modelsim PE or SE installed right now... I
tried case in generate as well but it didn't work any better.

Example code, vcom -2008 says
** Error: generate_prob.vhdl(20): near "else": syntax error
(line 20 is the else generate line.)

LIBRARY ieee;
USE ieee.std_logic_1164.ALL;

entity dummy is
generic (
some_boolean_generic : boolean := false);
port(
clk : in std_logic;
reset_n : in std_logic;
dout : out std_logic
);
end dummy;

architecture dummy_arch of dummy is

begin

some_label: if some_boolean_generic = false generate
dout <= '0';
else generate
dout <= '1';
end generate some_label;

end dummy_arch;

[rickman]

I don't know specifically about Modelsim, but in many tools the VHDL
2008 features have to be turned on in the options. Try nosing around to
see if you can find that.

Rick

--

Rick

[HT-Lab]

On 05/12/2014 12:48, Anssi Saari wrote:
>
> Is Modelsim still not implementing VHDL 2008? I have some code with the
> "new" if ... generate with else branch but Modelsim 10.1e doesn't seem
> to support that. Or is it just that the Altera's Starter Edition doesn't
> support that? I don't have a Modelsim PE or SE installed right now... I
> tried case in generate as well but it didn't work any better.

Modelsim 10.1e was released in June of 2013. Your code compiled OK in
the latest 10.3d release.

Modelsim SE is an obsolete product and replaced by Questa core.

Regards,
Hans
www.ht-lab.com

[Daniel Kho]

The ModelSim-Altera version 10.1b (Apr 2012) supports VHDL-2008 pretty well. It's free (as in beer) - you can get it from Altera's website.

-dan

[sockp...@gmail.com]

Does VHDL-2008 need to be activated?

[Allan Herriman]

Not activated, but the VHDL compiler, vcom, takes a command line flag to
indicate which version of VHDL you want to apply.
e.g. vcom -93
or
vcom -2008


You can also put a default version in modelsim.ini

[vcom]
; VHDL93 variable selects language version as the default.
VHDL93 = 2008


Regards,
Allan

[Weng Tianxiang]

Altera final Modelsim Web edition is:
Subscription Edition Stratix (V,IV)
Arria (10,V GZ,V,II GZ,II GX)
Cyclone (V,IV E,IV GX)
MAX (10,V,II)
Web Edition Arria (II GX)
Cyclone (V,IV E,IV GX)
MAX (10,V,II)

[Weng Tianxiang]

Does it work for me if I download only the ModelSim compiler system without any device support. Because at the moment I don't have any Altera device selected and targeted, and try to determine if my design simulation works independently.