dff8.vbe

i need of vhdl code for 32-bit risc processor

ENTITY dff8 IS
PORT (
Din : IN bit_vector(7 downto 0);
clk : IN BIT;
enable : IN BIT;
selectbit : IN BIT;
Dout : OUT bit_vector(7 downto 0)
);
END dff8;

ARCHITECTURE dff8_arch OF dff8 IS

SIGNAL Reg : REG_VECTOR (7 downto 0) REGISTER;

BEGIN
flip_flop : BLOCK ( clk='1' AND NOT clk'STABLE AND enable='1' AND selectbit='1')

BEGIN
Reg(0) <= GUARDED Din(0);
Reg(1) <= GUARDED Din(1);
Reg(2) <= GUARDED Din(2);
Reg(3) <= GUARDED Din(3);
Reg(4) <= GUARDED Din(4);
Reg(5) <= GUARDED Din(5);
Reg(6) <= GUARDED Din(6);
Reg(7) <= GUARDED Din(7);

END BLOCK;

Dout(0) <= Reg(0);
Dout(1) <= Reg(1);
Dout(2) <= Reg(2);
Dout(3) <= Reg(3);
Dout(4) <= Reg(4);
Dout(5) <= Reg(5);
Dout(6) <= Reg(6);
Dout(7) <= Reg(7);

END;