Hi all,

I am new with VHDL code..

I try to run the sample code from http://www.designers-guide.org/Modeling/fc_jtol_src_ns.vhd with quartus2 and received several errors shown below:
Error (10500): VHDL syntax error at InputJitter.vhd(29) near text "sj_out";  expecting ":", or ","

Partial of the code..
library IEEE;
use IEEE.MATH_REAL.all;
library IEEE_PROPOSED;
use IEEE_PROPOSED.electrical_systems.all;
entity sj_src is
     port (
           sj_freq : in real;
           sj_amp : in real;
           freq : in real;
           terminal sj_out : electrical);       ---this is line 29
end sj_src;


I suspect that in quartus2, it doesn't has the library IEEE_PROPOSED and aren't able to use IEEE_PROPOSED.electrical_systems.all..

Is it possible to download the library file?? Where can I download??

Thanks..

Hi andrew,

I have tried using IEEE library but I still received the same error message.. I think that my IEEE library don't have electrical_system..

From a quick google I saw some references to VHDL-AMS with QuartusII, but I didn't follow them deeply to check...

However, it may be like it is with the Cadence AMS simulator shipped in the IUS stream; there are two (in fact more than two) versions of IEEE, one which has the AMS extensions, and one which doesn't (there are other "pure" versions). You need to make sure with AMS Designer that you're using the right version of the library via your cds.lib.

There may be a similar requirement with QuartusII - assuming it actually supports VHDL AMS, as Ken said!

Regards,

Andrew.