Forum Discussion
Altera_Forum
Honored Contributor
15 years agoCounting the position of ones in a binary vector
I want to design a combinatorial circuit for an fpga which will count the position of ones in a 16 bit vector. eg1 if vector is 16'b0000_0000_0011_0101 then output should be 64'h0000_0000_0000_5...
Altera_Forum
Honored Contributor
15 years ago --- Quote Start --- only as guide, not tested
process(data_in)
begin
for i in 0 to 15 loop
if data_in(i) = '0' then
data_out(i*4:i*4+3) <= "0000";
else
data_out(i*4:i*4+3) <= std_logic_vector(to_unsigned(i,4));
end if;
end loop;
end process;
--- Quote End --- No for loops because i dont know what circuit will the synthesizer make out of that...