Remote System Upgrade-CycloneIII-data_out issue

Hi all,

I have generated Remote System Upgrade VHDL code using ALTREMOTE_UPDATE mega function,in AS configuration.

I am simulating the design forPARAMETER WRITES (param[]=2,3 & 4 respectively)

followed by reads.

Data bus widths: data_in(21 downto 0);data_out(28 downto 0).

For writes,I see the writes happening properly on data_out.

for reads,i always see unknown (u and ?) on the data_out.

Below is the snapshot of my testbench.Greatly appreciate your help.

-- Init

reset_timer <= '0';

read_param <= '0';

reconfig <= '0';

write_param <= '0';

read_source <= "11";

param <= "010";

data_in <= "0010101010101010101010";

-- reset

wait until falling_edge(clock);

reset <= '1';

wait until falling_edge(clock);

wait until falling_edge(clock);

reset <= '0';

--wait

for N in 0 to 11 loop

wait until falling_edge(clock);

end loop;

write_param <= '1';

wait until falling_edge(clock);

write_param <= '0';

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

--

param <= "011";

data_in <= "0000000000000000000001" ;

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

write_param <= '1';

wait until falling_edge(clock);

write_param <= '0';

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

param <= "100";

data_in <= "0000000000000000011111" ;

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

write_param <= '1';

wait until falling_edge(clock);

write_param <= '0';

for N in 0 to 100 loop

wait until falling_edge(clock);

end loop;

--*********START READ**********

-- read parameters

data_in <= "0000000000000000000000" ;

param <= "010";

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

read_param <= '1';

wait until falling_edge(clock);

read_param <= '0';

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

param <= "011";

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

read_param <= '1';

wait until falling_edge(clock);

read_param <= '0';

for N in 0 to 70 loop

wait until falling_edge(clock);

end loop;

param <= "100";

for N in 0 to 11 loop

wait until falling_edge(clock);

end loop;

read_param <= '1';

wait until falling_edge(clock);

read_param <= '0';

for N in 0 to 50 loop

wait until falling_edge(clock);

end loop;

Thanks,

Brunda