I am able to successfully analyze and run a simple VHDL counter in GHDL on macos, but when launching GTKW, the use of a generic causes problems.
The error message is
Unable to block on application (GetProcessPID() returned 184467095516)
Any ideas what this means or what gives rise to this error? (Couldn't find anything Googling it)
It seems to be connected to this line
signal count: unsigned (G_NBITS-1 downto 0)
From this code segment
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity counter_simple is
generic(
G_NBITS : integer range 1 to 32 := 3
);
port(
clk : in std_logic;
reset_n : in std_logic;
--count_out : out std_logic_vector(G_NBITS-1 downto 0)
count_out : out std_logic_vector(2 downto 0)
);
end;
architecture rtl of counter_simple is
--signal count: unsigned (G_NBITS-1 downto 0)
-- ABOVE LINE CRASHES gtkwave
-- Unable to block on application (GetProcessPID() returned 184467095516)
-- so instead:
signal count: unsigned (2 downto 0);
begin
counting : process (clk, reset_n)
begin
if (reset_n = '0') then
count <= (others => '0');
elsif rising_edge(clk) then
count <= count +1;
end if;
end process;
--count_out <= std_logic_vector(count(G_NBITS-1 downto 0));
count_out <= std_logic_vector(count(2 downto 0));
end rtl;
Printing the counter with report, in a testbench (around this counter) is fine in both cases, i.e. in both cases the counter runs 0..7.
So the simulation runs but there appears to be something offensive in the .ghw file.
