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Altera_Forum
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9 years ago

Array of integer to std_logic_vector !?

Hello guys ! Description : the input is an std_logic_vector ..... the outpout must be an std_logic_vector BUT, I read every element of the input and check if it is '1' then write 1 to an arra...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

That sounds like a crazy idea. Why are you converting a 6 bit bus into a 12 bit bus (2 bits is required to cover 1 and -1) AND the original 6 bit data. Im guessing you're trying to find the number of 1s compared to number of 0s?

anyway you can easily do it. 


type int_array_t is array(5 downto 0) of integer range -1 to 1;
signal my_ar : int_array_t;
...
for i in my_ar'range loop
  if input(i) = '0' then
    my_ar(i) = -1;
  elsif input(i) = '1' then
    my_ar(i) = 1;
  else --cover illegal states in simulation
    my_ar(i) = 0;
  end if;
end loop;