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Altera_Forum
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12 years ago

Infering DSP block in Arria V

Hello I'm trying to infer DSP blocks in my Arria V design as a replacement for my former ALTMULT_ADD instance in Stratix III. I notice that the input registers are placed outside (i.e. the DSP ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

try this direct coding style: 


process(rst,clk)
begin
if rst = '1' then
   ...
elsif rising_edge(clk) then
   A_reg <= A;
   B_reg <= B;
   prod <= A_reg * B_reg;
   sum <= sum + prod;
end if;
end process;
out <= sum;