Re: Testbench didnt work for my Rnot Snot flip flop

Altera_Forum · ‎12-17-2017

Hello there, i have problem. My tb file didnt work. Can someone please help me and test it?

I have Quartus 13.0 SP1. For simulation i use AlteraSim. Thanks a lot:

VHDL file:

library IEEE; --kniznica IEEEuse IEEE.STD_LOGIC_1164.ALL; --pouzitie IEEE.STD_LOGIC pre vyuzitie STD_LOGIC FUNKCII
entity rs_nand is -- popis entity
Port (rnot,snot: in  STD_LOGIC; -- definovany port s log.vstupmi R, S
      q,qb : out STD_LOGIC); -- VYSTUPY Q QB
end rs_nand; --koniec popisu entity
architecture rs_nand_arch of rs_nand is --popis architektury
signal tmp_q, tmp_qb : STD_LOGIC; -- vytvorenie logickych signalov tmp_q a tmp_qb
signal r,s : STD_LOGIC;
begin
r <= not rnot;
s <= not snot;
  tmp_q  <= snot NAND tmp_qb; -- popis signalu architektury na NAND hradle
  tmp_qb <= rnot NAND tmp_q; -- popis signalu architektury na NAND hradle
  q  <= tmp_q; -- priradenie signalu tmp_q pre vystup q
  qb <= tmp_qb; -- priradenie signalu tmp_qb pre vystup qb
end rs_nand_arch; --koniec popisu architektury

TB file:

library IEEE; --kniznicause IEEE.STD_LOGIC_1164.ALL; --pouzitie log. funkcii STD_LOGIC
entity rs_nand is --opis entity
   port(rnot, snot : in std_logic;
           q, qb : out std_logic);
end rs_nand;
architecture rs_nand_arch of rs_nand is
signal tmp_q, tmp_qb : STD_LOGIC;
signal r, s : STD_LOGIC;
begin
  tmp_q  <= snot NAND tmp_qb;
  tmp_qb <= rnot NAND tmp_q;
r  <= not rnot;
s  <= not snot;
  q  <= tmp_q;
  qb <= tmp_qb;
end rs_nand_arch;
--------------------------------
library ieee;
use ieee.std_logic_1164.all;
entity rs_nand_tb is --entita testbench
end rs_nand_tb ;
architecture tb of rs_nand_tb  is --architektura
   component rs_nand is -- komponent rs_nand je komponentom architektury tb, ktora je pod entitou rs_nand_tb
      port(rnot, snot : in std_logic; --port komponentu s vstupmi
             q, qb : out std_logic); --vystupmi
   end component; --uknceny popis komponentu
   -------------
   signal rnot, snot, q, qb : std_logic; --logicke signaly, ktore je mozne dalej opisat v port mappingu
   -------------
begin
 mapping: rs_nand port map(rnot, snot, q, qb); --mapovanie portov pre danu entitu
 process --opis procesu. V procese je kod rovnocenny
    --s <= '0'; a r <= '0';
  -- je to isté ako  r <= '0'; a s <= '0';
  --rychlost vykonavania krokov v procese je identicka, nezalezi na poradi, riadku v kode
 begin --zaciatok opisu procesov (ktore mozu nastat, stavy)
 -------------TEST 1
   snot <= '0';
   rnot <= '0';
   wait for 10 ns;
   assert(q = '1') report "Error 1"    severity error; --zakazany stav
   assert(qb = '1'); --funkcia assert vie nastavit stav výstupu, moze aj referovat chybu!
    ----------TEST 2
   snot <= '0';
   rnot <= '1';
   wait for 10 ns;
   assert(q = '1'); --
    assert(qb = '0');
   ----------TEST 3
   snot <= '1';
   rnot <= '0';
   wait for 10 ns; --10ns caka v tomto stave
   assert(q = '0');
    assert(qb = '1');
    ----------TEST 4
   snot <= '1';
   rnot <= '1';
   wait for 10 ns;
   assert(q = q);
    assert(qb = not q);
   
    end process; --koniec opisu procesov
end tb; --koniec opisu architektury tb
configuration cfg_tb of rs_nand_tb is --konfiguracia test bench entity
   for tb --cyklus je prazdny, nema ziadnu specificku funkciu v nasom pripade
   end for; --koniec cyklu
end cfg_tb --koniec opisu konfiguracie

Altera_Forum · ‎12-17-2017

You don't say what the problem is.

Altera_Forum · ‎12-17-2017

AlteraSim is clear.. Nothing show. Didnt see my project in left list too. Waveform simulation working OK, altera's not.

Altera_Forum · ‎12-17-2017

Do you mean Modelsim? Quartus has an internal simulator which only simulates compiled designs. Modelsim is a 3rd party simulator, where intel provides a copy for free.

So what simulator are you having problems with, and what exactly is the problem?

Altera_Forum · ‎12-17-2017

Yes ModelSim-Altera. That's it. There is blank black window, where normally you can see waves. On left list, there isnt my design. Few days ago with older version of sketches it worked. I added r and s variables to that design. Only as signals std_logic. Because i simulate Rnot Snot flip flop. For that i must added (non negated) R and S. Can you please help me? Can you try that on your machine? I posted tb and normal vhd entity file.

Altera_Forum · ‎12-17-2017

Are there any errors in the transcript window?

Altera_Forum · ‎12-17-2017

Oh my god yes... ; missing at the end of last row. in tb. Error notice was "under" display. Thanks! Working.