entity ch_05_14 is
end entity ch_05_14;
----------------------------------------------------------------
architecture test of ch_05_14 is
signal PC, functional_next_PC, equivalent_next_PC : integer := 0;
begin
block_05_3_p : block is
port ( next_PC : out integer );
port map ( next_PC => functional_next_PC );
begin
-- code from book:
PC_incr : next_PC <= PC + 4 after 5 ns;
-- end of code from book
end block block_05_3_p;
----------------
block_05_3_q : block is
port ( next_PC : out integer );
port map ( next_PC => equivalent_next_PC );
begin
-- code from book:
PC_incr : process is
begin
next_PC <= PC + 4 after 5 ns;
wait on PC;
end process PC_incr;
-- end of code from book
end block block_05_3_q;
----------------
stimulus : process is
begin
for i in 1 to 10 loop
PC <= i after 20 ns;
wait for 20 ns;
end loop;
wait;
end process stimulus;
verifier :
assert functional_next_PC = equivalent_next_PC
report "Functional and equivalent models give different results";
end architecture test;
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