3 use IEEE.std_logic_1164.all;
4 use IEEE.numeric_std.all;
8 architecture behaviour of rom is
10 signal vsim_bug : std_logic_vector(31 downto 0);
15 if rising_edge(clk) then
16 -- data_out <= ram(to_integer(UNSIGNED(rd_addr)));
19 --case rrrr_addr(10 downto 0) is
20 case vsim_bug(6 downto 0) is
22 -- when "00000000000" => data_out <= "11101101000000000000000000000000"; --
23 -- when "00000000001" => data_out <= "11101101001000000000000000000000"; --
24 -- when "00000000010" => data_out <= "11100111101000000000000000000000"; --
26 -- when "00000000011" => data_out <= "11100001000000000000000000100001"; --
27 -- when "00000000100" => data_out <= "11101100100000000000001100000000"; --
28 -- when "00000000101" => data_out <= "00001011011111111111111010000011"; --
30 -- when "00000000110" => data_out <= "11101101000000000000000000001000"; --
31 -- when "00000000111" => data_out <= "11100111100000000000000000001111"; --
32 -- when "00000001000" => data_out <= "11100111100000000000000000010011"; -- --
35 -- when "00000001001" => data_out <= x"ed080048"; --x"ed080048"; --
36 -- when "00000001010" => data_out <= x"ed500080"; --
37 -- when "00000001011" => data_out <= x"fd500002"; --
38 -- when "00000001100" => data_out <= x"eb000107";
39 -- when "00000001101" => data_out <= "11101011000000000000011010000010"; --"11101011000000000000000000000010";
41 -- when "00000001110" => data_out <= x"e5088800";
42 -- when "00000001111" => data_out <= x"e0150800";
43 -- when "00000010000" => data_out <= x"e7010000";
44 -- when "00000010001" => data_out <= x"ec800000";
45 -- when "00000010010" => data_out <= x"0b000008";
46 -- when "00000010011" => data_out <= x"e1910020";
47 -- when "00000010100" => data_out <= x"eb7ffe07";
48 -- when "00000010101" => data_out <= x"e7197ffc";
49 -- when "00000010110" => data_out <= x"e0018000";
51 -- when "00000010111" => data_out <= x"e1110020";
52 -- when "00000011000" => data_out <= x"e7810000";
53 -- when "00000011001" => data_out <= x"eb00000a";
56 -- when "00000011010" => data_out <= x"ed290080";
57 -- when "00000011011" => data_out <= x"e1080000";
59 -- when "00000011100" => data_out <= x"e78a8000";
61 -- when "00000011101" => data_out <= x"ed510058";
62 -- when "00000011110" => data_out <= x"e7850000";
66 --1;00000000;ed010058;ldi r0, 0x200B;;
67 --1;00000004;ed090060;ldi r1, 0x200C;;
68 --1;00000008;ed110080;ldi r2, 0x2010;;
69 --1;0000000c;e7188000;ldw r3, 0(r1);;
70 --1;00000010;ec1a0000;cmp r3, r4;;
71 --1;00000014;1b7ffd81;breq 0;;
72 --1;00000018;e7980000;stw r3, 0(r0);;
73 --1;0000001c;e7990000;stw r3, 0(r2);;
74 --1;00000020;e1218000;addi r4, r3, 0;;
75 --1;00000024;eb7ffb81;br 0;;
77 -- when "0000000" => data_out <= x"ed010058";
78 -- when "0000001" => data_out <= x"ed090060";
79 -- when "0000010" => data_out <= x"ed110080"; --x"e7188000"; f
80 -- when "0000011" => data_out <= x"e7188000"; --x"ec1a0000";
81 -- when "0000100" => data_out <= x"ec1a0000";
82 -- when "0000101" => data_out <= x"1b7ffe01";
83 -- when "0000110" => data_out <= x"e7990000"; -- f
84 -- when "0000111" => data_out <= x"e7980000";
85 -- when "0001000" => data_out <= x"e1218000";
86 -- when "0001001" => data_out <= x"eb7ffb81";
88 --1;00000000;ed010058;ldi r0, 0x200B;;;
89 --1;00000004;ed090060;ldi r1, 0x200C;;;
90 --1;00000008;ed110080;ldi r2, 0x2010;;;
91 --1;0000000c;ed390078;ldi r7, 0x200F;;;
92 --1;00000010;ed480012;ldih r9, 0x0002;;;
93 --1;00000014;e7438000;ldw r8, 0(r7);;;
94 --1;00000018;e254c000;and r10, r9, r8;;;
95 --1;0000001c;07188000;ldwnz r3, 0(r1);;;
96 --1;00000020;07980000;stwnz r3, 0(r0);;;
97 --1;00000024;07990000;stwnz r3, 0(r2);;;
98 --1;00000028;eb7ffb01;br 0;;;
102 -- when "0000000" => data_out <= x"ed010058";
103 -- when "0000001" => data_out <= x"ed090060";
104 -- when "0000010" => data_out <= x"ed110080"; --x"e7188000"; f
105 -- when "0000011" => data_out <= x"ed390000"; --x"ec1a0000";
106 -- when "0000100" => data_out <= x"ed480012";
107 -- when "0000101" => data_out <= x"e7438000";
108 -- when "0000110" => data_out <= x"e254c000"; -- f
109 -- when "0000111" => data_out <= x"07188000";
110 -- when "0001000" => data_out <= x"07980000";
111 -- when "0001001" => data_out <= x"07990000";
112 -- when "0001010" => data_out <= x"eb7ffb81";
114 -------------------------------------------
116 -- when "00000000000" => data_out <= x"ed000000";
117 -- when "00000000001" => data_out <= x"ed080008";
118 -- when "00000000010" => data_out <= x"e9880000"; --x"e7188000"; f
119 -- when "00000000011" => data_out <= x"e5088400"; --x"ec1a0000";
120 -- when "00000000100" => data_out <= x"e9880001";
121 -- when "00000000101" => data_out <= x"e7180000";
122 -- when "00000000110" => data_out <= x"e9200001"; -- f
123 -- when "00000000111" => data_out <= x"e7a00004";
124 -- when "00000001000" => data_out <= x"e7280004";
125 -- -- when "00000001001" => data_out <= x"eb7ffb81";
126 when "0000000" => data_out <= x"eb000183"; -- br+ main
127 when "0000001" => data_out <= x"eb000103"; -- br+ main
128 when "0000010" => data_out <= x"eb000008"; -- ret
129 when "0000011" => data_out <= x"ed010000"; -- ldi r0, 0x2000
130 when "0000100" => data_out <= x"ed090058"; -- ldi r1, 0x200b
131 when "0000101" => data_out <= x"ed110060"; -- ldi r2, 0x200c
132 when "0000110" => data_out <= x"e7280000"; -- ldw r5, 0(r0)
133 when "0000111" => data_out <= x"e2a80010"; -- andx r5, 0x2
134 when "0001000" => data_out <= x"1b7ffd83"; -- brzs+ main
135 when "0001001" => data_out <= x"e7390000"; -- ldw r7, 0(r2)
136 when "0001010" => data_out <= x"e7280000"; -- ldw r5, 0(r0)
137 when "0001011" => data_out <= x"e2a80008"; -- andx r5, 0x1
138 when "0001100" => data_out <= x"0b7fff03"; -- brnz+ uartnrdy
139 when "0001101" => data_out <= x"e7b88000"; -- stw r7, 0(r1)
140 when "0001110" => data_out <= x"eb7ffa81"; -- br main
141 -- just nop until rom end!
142 when others => data_out <= x"fd000000";
147 vsim_bug(6 downto 0) <= rd_addr;
148 vsim_bug(31 downto 7) <= (others => '0');
149 end architecture behaviour;