Data Register Block

[Ukanbal]

Hi;

for my next assignment i am supposed to build the data path of a 32 bit processor which uses 8 x 32 bit registers as a DRB. i have managed to finish up every component but this DRB. as any other DRB this one uses 3 address inputs wAdd1 (write address), rAdd1 and rAdd2 (the 2 register addresses), uses a wen_rf for write enable, clr_rf to clear all the registers inside the block, uses a 32 bit wData input and has 2 output data signals both 32 bit rData1 and rData2.
And for the assignment we have to implement the 8 registers inside the DRB as well. Here is my code
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.std_logic_arith.ALL;
USE ieee.std_logic_unsigned.ALL;

ENTITY Reg8 IS
PORT(
clr_RF : IN std_logic;
wen_RF : IN std_logic;
wAdd1 : IN STD_LOGIC_VECTOR(2 downto 0);
rAdd1 : IN STD_LOGIC_VECTOR(2 downto 0);
rAdd2 : IN STD_LOGIC_VECTOR(2 downto 0);
wdata : IN STD_LOGIC_VECTOR(31 downto 0);
rData1 : OUT STD_LOGIC_VECTOR(31 downto 0);
rData2 : OUT STD_LOGIC_VECTOR(31 downto 0);
r0,r1,r2,r3 : BUFFER STD_LOGIC_VECTOR(31 downto 0);
r4,r5,r6,r7 : BUFFER STD_LOGIC_VECTOR(31 downto 0);
clk : IN std_logic);
END Reg8;

ARCHITECTURE desc OF Reg8 IS

BEGIN
Process( wen_RF, clr_RF, wdata, clk, wAdd1, rAdd1, rAdd2)
BEGIN
IF( clr_RF = '1') THEN
r0 <= (OTHERS => '0');
r1 <= (OTHERS => '0');
r2 <= (OTHERS => '0');
r3 <= (OTHERS => '0');
r4 <= (OTHERS => '0');
r5 <= (OTHERS => '0');
r6 <= (OTHERS => '0');
r7 <= (OTHERS => '0');
END IF;

CASE rAdd1 IS
WHEN "000" =>
rData1 <= r0;
WHEN "001" =>
rData1 <= r1;
WHEN "010" =>
rData1 <= r2;
WHEN "011" =>
rData1 <= r3;
WHEN "100" =>
rData1 <= r4;
WHEN "101" =>
rData1 <= r5;
WHEN "110" =>
rData1 <= r6;
WHEN "111" =>
rData1 <= r7;
END CASE;

CASE rAdd2 IS
WHEN "000" =>
rData2 <= r0;
WHEN "001" =>
rData2 <= r1;
WHEN "010" =>
rData2 <= r2;
WHEN "011" =>
rData2 <= r3;
WHEN "100" =>
rData2 <= r4;
WHEN "101" =>
rData2 <= r5;
WHEN "110" =>
rData2 <= r6;
WHEN "111" =>
rData2 <= r7;
END CASE;

IF( clk'EVENT) AND (clk = '1') THEN
IF ( wen_RF = '1') THEN
IF ( wAdd1 = "000") THEN
r0 <= wdata;
r1 <= r1;
r2 <= r2;
r3 <= r3;
r4 <= r4;
r5 <= r5;
r6 <= r6;
r7 <= r7;
ELSIF ( wAdd1 = "001") THEN
r0 <= r0;
r1 <= wdata;
r2 <= r2;
r3 <= r3;
r4 <= r4;
r5 <= r5;
r6 <= r6;
r7 <= r7;
ELSIF ( wAdd1 = "010") THEN
r0 <= r0;
r1 <= r1;
r2 <= wdata;
r3 <= r3;
r4 <= r4;
r5 <= r5;
r6 <= r6;
r7 <= r7;
ELSIF ( wAdd1 = "011") THEN
r0 <= r0;
r1 <= r1;
r2 <= r2;
r3 <= wdata;
r4 <= r4;
r5 <= r5;
r6 <= r6;
r7 <= r7;
ELSIF ( wAdd1 = "100") THEN
r0 <= r0;
r1 <= r1;
r2 <= r2;
r3 <= r3;
r4 <= wdata;
r5 <= r5;
r6 <= r6;
r7 <= r7;
ELSIF ( wAdd1 = "101") THEN
r0 <= r0;
r1 <= r1;
r2 <= r2;
r3 <= r3;
r4 <= r4;
r5 <= wdata;
r6 <= r6;
r7 <= r7;
ELSIF ( wAdd1 = "110") THEN
r0 <= r0;
r1 <= r1;
r2 <= r2;
r3 <= r3;
r4 <= r4;
r5 <= r5;
r6 <= wdata;
r7 <= r7;
ELSIF ( wAdd1 = "111") THEN
r0 <= r0;
r1 <= r1;
r2 <= r2;
r3 <= r3;
r4 <= r4;
r5 <= r5;
r6 <= r6;
r7 <= wdata;
END IF;
END IF;
END IF;

END PROCESS;
END desc;



i have a problem with the 8 registers inside. they do not hold their data outside the clock therefore not allowing me to use this code. how can i fix this problem or is there another way to implement those 8 registers inside?
Thanks a lot