Forum Discussion
CLyna
New Contributor
New ContributorHi guys I am writing code for shifting rows section in an AES algorithm stuck getting errors.
I am trying to create a matrix from a vector using for loops then mapping a matrix to move them to there required positions. but i keep getting the error Error (10028): Can't resolve multiple constan...
sstrell
Super Contributor
Super ContributorI think the problem is you have your reset and loading of matrix1 in two separate processes, causing multiple drivers into matrix1. The code should probably look like this:
process (reset, clock)
BEGIN
if(reset) then
for i in 15 downto 0 loop
matrix1(15-i) <= (others => '0');
matrix2(15-i) <= (others => '0');
end loop;
elsif (start and rising_edge(clock)) then
FOR i IN 15 downto 0 LOOP
matrix1(15-i) <= data_in((8*i)+(7 downto (8*i)));
END LOOP;
else matrix1 <= matrix1;
end if;
end process;
#iwork4intel
