Функция кода получает код операции, она будет выполнять задачу на переднем крае часов.Я студент второго курса бакалавриата, поэтому любая помощь / вклад будут оценены
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity ALU is Port (
X,Y :IN BIT_VECTOR(2 downto 0);
OPcode :IN BIT_VECTOR(2 downto 0);
Z :OUT BIT_VECTOR(5 downto 0);
CLK :IN BIT;
TempValX:INOUT BIT_VECTOR(5 downto 0));
end ALU;
architecture Circuit of ALU is signal g: BIT_VECTOR(3 downto 0);
signal C: BIT_VECTOR(3 downto 0);
signal p, u, r : bit_vector(2 downto 0);
signal s: Bit_vector(5 downto 0);
Component ThreeBitFA is
PORT (X,Y :IN BIT_VECTOR(2 downto 0);
C :INOUT BIT_VECTOR(3 downto 0));
end component; begin adder:ThreeBitFA port map(
X => X,
Y => Y,
C => C);
Process(X,Y,CLK,OPcode)
begin
IF OPcode = "000" THEN ----------------ADD OPcode
IF (CLK'EVENT AND CLK = '1') THEN
tempvalx <= "00" & C;
Z <= tempvalx;
end if;
ELSIF OPcode = "001" THEN ----------------MULT OPcode
IF (CLK'EVENT AND CLK = '1') THEN
IF Y(0) = '1' THEN P <= X; ELSE P <= "000"; END IF;
IF Y(1) = '1' THEN u <= X; ELSE u <= "000"; END IF;
IF Y(2) = '1' THEN R <= X; ELSE R <= "000"; END IF;
z(0) <= P(0);
z(1) <= P(1) XOR u(0); s(0) <= P(1) AND u(0);
z(2) <= P(2) XOR u(1) XOR R(0) XOR s(0); s(1) <= s(0) AND P(2); s(2) <= u(1) AND R(0);
z(3) <= u(2) XOR R(1) XOR s(1) XOR s(2); s(3) <= s(2) AND s(1); s(4) <= u(2) AND R(1);
z(4) <= R(2) XOR s(3) XOR s(4); s(5) <= s(3) AND s(4);
z(5) <= s(5);
end if;
ELSIF (OPcode = "010") THEN ------------AND OPcode
IF (CLK'EVENT AND CLK = '1') THEN
Z <= "000" & (X AND Y);
end IF;
ELSIF (OPcode = "011") THEN ------------OR Opcode
IF (CLK'EVENT AND CLK = '1') THEN
Z <= "000" & (X OR Y);
end IF;
ELSIF (OPcode = "100") THEN ------------XOR Opcode
IF (CLK'EVENT AND CLK = '1') THEN
Z <= "000" & (X XOR Y);
end IF;
ELSIF (OPcode = "101") THEN ------------NOT Opcode
IF (CLK'EVENT AND CLK = '1') THEN
Z <= "000" & (NOT X);
end IF;
ELSIF (OPcode = "110") THEN -----------Rshift OPcode
IF (CLK'EVENT AND CLK = '1') THEN
TempValX <= "000" & X;
Z <= '0' & TempValX(5 downto 1);
ELSIF (OPcode = "111") THEN -----------Lshift OPcode
IF (CLK'EVENT AND CLK = '1') THEN
TempValX <= "000" & X;
Z <= TempValX(4 downto 0) & '0';
end IF;
ELSE
Null;
END IF;
END IF; END Process; end Circuit;