3 use IEEE.std_logic_1164.all;
4 use IEEE.numeric_std.all;
8 architecture behaviour of rom is
10 subtype RAM_ENTRY_TYPE is std_logic_vector(DATA_WIDTH -1 downto 0);
11 type RAM_TYPE is array (0 to (2**ADDR_WIDTH)-1) of RAM_ENTRY_TYPE;
13 -- r0 = 0, r1 = 1, r2 = 3, r3 = A
15 signal rrrr_addr : std_logic_vector(31 downto 0);
20 if rising_edge(clk) then
21 -- data_out <= ram(to_integer(UNSIGNED(rd_addr)));
24 case rrrr_addr(10 downto 0) is
26 when "00000000000" => data_out <= "11101101000000000000000000000000"; --
27 when "00000000001" => data_out <= "11101101001000000000000000000000"; --
28 when "00000000010" => data_out <= "11100111101000000000000000000000"; --
30 when "00000000011" => data_out <= "11100001000000000000000000100001"; --
31 when "00000000100" => data_out <= "11101100100000000000001100000000"; --
32 when "00000000101" => data_out <= "00001011011111111111111010000011"; --
34 when "00000000110" => data_out <= "11101101000000000000000000001000"; --
35 when "00000000111" => data_out <= "11100111100000000000000000001111"; --
36 when "00000001000" => data_out <= "11100111100000000000000000010011"; -- --
39 when "00000001001" => data_out <= x"ed080080"; --x"ed080048"; --
40 when "00000001010" => data_out <= x"ed500080"; --
41 when "00000001011" => data_out <= x"fd500002"; --
42 when "00000001100" => data_out <= x"eb000107";
43 when "00000001101" => data_out <= "11101011000000000000011010000010"; --"11101011000000000000000000000010";
45 when "00000001110" => data_out <= x"e5088800";
46 when "00000001111" => data_out <= x"e0150800";
47 when "00000010000" => data_out <= x"e7010000";
48 when "00000010001" => data_out <= x"ec800000";
49 when "00000010010" => data_out <= x"0b000008";
50 when "00000010011" => data_out <= x"e1910020";
51 when "00000010100" => data_out <= x"eb7ffe07";
52 when "00000010101" => data_out <= x"e7197ffc";
53 when "00000010110" => data_out <= x"e0018000";
55 when "00000010111" => data_out <= x"e1110020";
56 when "00000011000" => data_out <= x"e7810000";
57 when "00000011001" => data_out <= x"eb00000a";
60 when "00000011010" => data_out <= x"ed290080";
61 when "00000011011" => data_out <= x"e1080000";
63 when "00000011100" => data_out <= x"e78a8000";
65 when others => data_out <= "11101011000000000000000000000010";
74 rrrr_addr(10 downto 0) <= rd_addr;
75 rrrr_addr(31 downto 11) <= (others => '0');
76 end architecture behaviour;