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Aggiunto Shifter 48 bit

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Luca Cuzzocrea
2019-08-29 19:39:41 +02:00
parent f8ee1d5e27
commit fd3a046f3e
2 changed files with 102 additions and 23 deletions
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
entity ShiftRight48 is
port(
N : in std_logic_vector(47 downto 0);
PLACES : in std_logic_vector(5 downto 0);
RESULT : out std_logic_vector(47 downto 0)
);
end ShiftRight48;
architecture ShiftRightArch of ShiftRight48 is
begin
asdf: process (N, PLACES)
begin
case PLACES is
when "000000" => RESULT <= N( 47 downto 0 );
when "000001" => RESULT <= "0" & N( 47 downto 1 );
when "000010" => RESULT <= "00" & N( 47 downto 2 );
when "000011" => RESULT <= "000" & N( 47 downto 3 );
when "000100" => RESULT <= "0000" & N( 47 downto 4 );
when "000101" => RESULT <= "00000" & N( 47 downto 5 );
when "000110" => RESULT <= "000000" & N( 47 downto 6 );
when "000111" => RESULT <= "0000000" & N( 47 downto 7 );
when "001000" => RESULT <= "00000000" & N( 47 downto 8 );
when "001001" => RESULT <= "000000000" & N( 47 downto 9 );
when "001010" => RESULT <= "0000000000" & N( 47 downto 10 );
when "001011" => RESULT <= "00000000000" & N( 47 downto 11 );
when "001100" => RESULT <= "000000000000" & N( 47 downto 12 );
when "001101" => RESULT <= "0000000000000" & N( 47 downto 13 );
when "001110" => RESULT <= "00000000000000" & N( 47 downto 14 );
when "001111" => RESULT <= "000000000000000" & N( 47 downto 15 );
when "010000" => RESULT <= "0000000000000000" & N( 47 downto 16 );
when "010001" => RESULT <= "00000000000000000" & N( 47 downto 17 );
when "010010" => RESULT <= "000000000000000000" & N( 47 downto 18 );
when "010011" => RESULT <= "0000000000000000000" & N( 47 downto 19 );
when "010100" => RESULT <= "00000000000000000000" & N( 47 downto 20 );
when "010101" => RESULT <= "000000000000000000000" & N( 47 downto 21 );
when "010110" => RESULT <= "0000000000000000000000" & N( 47 downto 22 );
when "010111" => RESULT <= "00000000000000000000000" & N( 47 downto 23 );
when "011000" => RESULT <= "000000000000000000000000" & N( 47 downto 24 );
when "011001" => RESULT <= "0000000000000000000000000" & N( 47 downto 25 );
when "011010" => RESULT <= "00000000000000000000000000" & N( 47 downto 26 );
when "011011" => RESULT <= "000000000000000000000000000" & N( 47 downto 27 );
when "011100" => RESULT <= "0000000000000000000000000000" & N( 47 downto 28 );
when "011101" => RESULT <= "00000000000000000000000000000" & N( 47 downto 29 );
when "011110" => RESULT <= "000000000000000000000000000000" & N( 47 downto 30 );
when "011111" => RESULT <= "0000000000000000000000000000000" & N( 47 downto 31 );
when "100000" => RESULT <= "00000000000000000000000000000000" & N( 47 downto 32 );
when "100001" => RESULT <= "000000000000000000000000000000000" & N( 47 downto 33 );
when "100010" => RESULT <= "0000000000000000000000000000000000" & N( 47 downto 34 );
when "100011" => RESULT <= "00000000000000000000000000000000000" & N( 47 downto 35 );
when "100100" => RESULT <= "000000000000000000000000000000000000" & N( 47 downto 36 );
when "100101" => RESULT <= "0000000000000000000000000000000000000" & N( 47 downto 37 );
when "100110" => RESULT <= "00000000000000000000000000000000000000" & N( 47 downto 38 );
when "100111" => RESULT <= "000000000000000000000000000000000000000" & N( 47 downto 39 );
when "101000" => RESULT <= "0000000000000000000000000000000000000000" & N( 47 downto 40 );
when "101001" => RESULT <= "00000000000000000000000000000000000000000" & N( 47 downto 41 );
when "101010" => RESULT <= "000000000000000000000000000000000000000000" & N( 47 downto 42 );
when "101011" => RESULT <= "0000000000000000000000000000000000000000000" & N( 47 downto 43 );
when "101100" => RESULT <= "00000000000000000000000000000000000000000000" & N( 47 downto 44 );
when "101101" => RESULT <= "000000000000000000000000000000000000000000000" & N( 47 downto 45 );
when "101110" => RESULT <= "0000000000000000000000000000000000000000000000" & N( 47 downto 46 );
when others => RESULT <= "000000000000000000000000000000000000000000000000";
end case;
end process;
end ShiftRightArch;