failure to compile a Scoreboard in Modelsim DE using osvvm 2018.04

[Barry Henderson]

Hello OSVVM forum, and Jim 🙂 

I am using Modelsim DE 32 bit under UBUNTU, i have turned an the -2008 switch in all my VHDL files.

I have made a generic package for my scorecboard as follows:

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

library osvvm;
context osvvm.OsvvmContext;
use osvvm.all;

use work.osvvm_testbench_pkg.all;
use work.design_package.ETHER_IPv4_ESP_TYPE;

package ScoreBoardPkg_IPv4Pkg_wrapper is

      — reference the package that define types and functions.
— use std.standard.all ; — implicitly included
package ScoreBoardPkg_IPv4Pkg is new ScoreBoardGenericPkg
generic map (
ExpectedType       => ETHER_IPv4_ESP_TYPE,
ActualType         => ETHER_IPv4_ESP_TYPE,
match              => ETHER_IPv4_ESP_MATCH,
expected_to_string => ETHER_IPv4_ESP_TYPE_to_string,
actual_to_string   => ETHER_IPv4_ESP_TYPE_to_string
);

end package ScoreBoardPkg_IPv4Pkg_wrapper;

I have been trying to compile a scoreboard without success for a couple of hours now. The error message i get is this :

— Compiling architecture Behavioral of osvvm_testbench
# ** Error: /home/barry2/vivado_projects/packetDecoder200G/packetDecoder200G/packetDecoder200G.srcs/sim_1/new/osvvm_testbench.vhd(132): A member of an uninstantiated package is referenced outside the scope of the package.

I may have instantiated the scoreboard incorrectly in my testbench… i could not get my generic package to work either directly inside my testbench which is why i am trying to reference it from within another package file as above. All my code compiles except for this error. I am thinking i must have missed a step alomg the way. I have been follwoing Jim’s examples in his Scoreboard Generic Package User Guide
User Guide for Release 2017.05

My testbench (as far as this generic scoreboard goes) looks like this :

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;
use IEEE.std_logic_textio.all;

library UNISIM;
use UNISIM.VComponents.all;

library std;
use std.textio.all;
use std.env.all;

library osvvm;
context osvvm.OsvvmContext;
use osvvm.all;

–**********************************************************************************************************************
—
— Packages with user Defintions for Simulation
—
–**********************************************************************************************************************
use work.design_package.BUI_TYPE;
use work.design_package.ETHER_IPv4_ESP_TYPE;
use work.ScoreBoardPkg_IPv4Pkg_wrapper.all;
use work.osvvm_testbench_pkg.all;

entity osvvm_testbench is

end entity osvvm_testbench;

architecture Behavioral of osvvm_testbench is

    use work.ScoreBoardPkg_IPv4Pkg_wrapper.all;

…… then just before the architecture begin i have this shared variable defined as a Protcted Type for my scoreboard instance :

shared variable ScoreBrd : osvvm.ScoreboardGenericPkg.ScoreBoardPType;

Can anybody help me figure out where i am going wrong please ?

thanks, Dr Barry H

[Jim Lewis]

Hi Barry,

A package instance creates a package.   For example, for integer, all you need is:

use std.textio.all ;
library ieee ;
  use ieee.std_logic_1164.all ;
  use ieee.numeric_std.all ;

package ScoreBoardPkg_int is new work.ScoreboardGenericPkg
  generic map (
    ExpectedType        => integer, 
    ActualType          => integer, 
    Match               => "=", 
    expected_to_string  => to_string, 
    actual_to_string    => to_string   
  ) ; 

Hence, the “wrapper package” in your example is both extra work and problematic.  Remove it and if you don’t have other errors you should be fine.

Best Regards,

Jim

[Barry Henderson]

Hi Jim, Many thanks for your answer. My problem is that i have tried every which way to get things to compile and i always get errors.

My scoreboard generic package is defined like this now in a seperate design unit (i.e. a VHDL file):

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

library osvvm;
–use osvvm.OsvvmContext;
use OSVVM.ScoreboardGenericPkg;

use work.osvvm_testbench_pkg.ETHER_IPv4_ESP_MATCH;
use work.osvvm_testbench_pkg.ETHER_IPv4_ESP_TYPE_to_string;
use work.design_package.ETHER_IPv4_ESP_TYPE;

package ScoreBoardPkg_IPv4Pkg is new ScoreBoardGenericPkg
generic map (
ExpectedType       => ETHER_IPv4_ESP_TYPE,
ActualType         => ETHER_IPv4_ESP_TYPE,
match              => ETHER_IPv4_ESP_MATCH,
expected_to_string => ETHER_IPv4_ESP_TYPE_to_string,
actual_to_string   => ETHER_IPv4_ESP_TYPE_to_string
);

In my testbench i reference my new package instance like this

use work.ScoreBoardPkg_IPv4Pkg.all;

And i am wondering where do i make the instantiation ? I have tried like this in my testbench :

architecture Behavioral of osvvm_testbench is

     use work.ScoreBoardPkg_IPv4Pkg.all;

And when compiling my design in Modelsim i get this error

 — Loading package ScoreboardGenericPkg
# ** Error: /home/barry2/vivado_projects/packetDecoder200G/packetDecoder200G/packetDecoder200G.srcs/sim_1/new/osvvm_testbench.vhd(45): A member of an uninstantiated package is referenced outside the scope of the package.
# — Loading package design_package
# — Loading context declaration OsvvmContext
# — Loading package osvvm_testbench_pkg
# ** Error: /home/barry2/vivado_projects/packetDecoder200G/packetDecoder200G/packetDecoder200G.srcs/sim_1/new/osvvm_testbench.vhd(65): VHDL Compiler exiting
# End time: 08:43:03 on Aug 01,2018, Elapsed time: 0:00:00
# Errors: 2, Warnings: 0
# ** Error: /home/barry2/msim32bit/modelsim_dlx/linuxpe/vcom failed.

So i don’t understand why i get this error because i (think !) that i have instantiated my new scoreboard package based on ScoreboardGenericPkg in my design unit : ScoreBoardPkg_IPv4Pkg.vhd

and this package does compile fine…i have implemented some functions for the match, expected_to_string and actual_to_string ports and i have referenced this new instantiation with my include clause.

Can you please help explain where i am going wrong Jim ?

cheers, Barry

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