bootromfun: led2 geht aus wenn ich was uebern uart schicke \o/

[calu.git] / cpu / src / rom_b.vhd

diff --git a/cpu/src/rom_b.vhd b/cpu/src/rom_b.vhd
index d7b5da1fb29500f6a855b0d8615828b8cf2c63ba..e45f7de9f73940945cec80df26e826962668b138 100644 (file)
--- a/cpu/src/rom_b.vhd
+++ b/cpu/src/rom_b.vhd
@@ -123,27 +123,52 @@ begin
 --                             when "00000000111" => data_out <= x"e7a00004";
 --                             when "00000001000" => data_out <= x"e7280004";
 --                     --      when "00000001001" => data_out <= x"eb7ffb81";
-
-                               when "0000000" => data_out <= "11101011000000000000010000000010";
-                               when "0000001" => data_out <= "11101011000000000001000000000110";
-                               when "0000010" => data_out <= x"eb000008";
-
-                               when "0001000" => data_out <= x"ed090058";
-                               when "0001001" => data_out <= x"ed110060";
-                               when "0001010" => data_out <= x"ed190080";
-                               when "0001011" => data_out <= x"ed210120";
-                               when "0001100" => data_out <= x"ed280018";
-                               when "0001101" => data_out <= x"e7aa0000";
-
-                       --      when "0100000" => data_out <= x"f7aa0000";
-                               when "0100001" => data_out <= x"e7390000";
-                               when "0100010" => data_out <= x"e13b8008";
-                               when "0100011" => data_out <= x"e7b98000";
-                               when "0100100" => data_out <= x"e7b88000";
-                               when "0100101" => data_out <= x"eb000008";
-
-                               when others => data_out <=    "11101011000000000000000000000010";
-
+       when "0000000" => data_out <= x"eb000183"; -- br+ main 
+       when "0000001" => data_out <= x"eb000487"; -- call+ uartrdy 
+       when "0000010" => data_out <= x"eb000008"; -- ret
+       when "0000011" => data_out <= x"ed090058"; -- ldi r1, 0x200b 
+       when "0000100" => data_out <= x"ed110060"; -- ldi r2, 0x200c 
+       when "0000101" => data_out <= x"ed190080"; -- ldi r3, 0x2010 
+       when "0000110" => data_out <= x"ed210120"; -- ldi r4, 0x2024 
+       when "0000111" => data_out <= x"ed280018"; -- ldi r5, 3
+       when "0001000" => data_out <= x"e7aa0000"; -- stw r5, 0(r4)
+       when "0001001" => data_out <= x"eb7ffb83"; -- br+ start
+       when "0001010" => data_out <= x"ed4101b8"; -- ldi r8, 0x2037 
+       when "0001011" => data_out <= x"ed4901d8"; -- ldi r9, 0x203b 
+       when "0001100" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0001101" => data_out <= x"e7d40000"; -- stw r10, 0(r8)
+       when "0001110" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0001111" => data_out <= x"ed5739c8"; -- ldi r10, 0xe739
+       when "0010000" => data_out <= x"e5554000"; -- lls r10, r10, 16
+       when "0010001" => data_out <= x"e7d48000"; -- stw r10, 0(r9)
+       when "0010010" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0010011" => data_out <= x"ed500008"; -- ldi r10, 1
+       when "0010100" => data_out <= x"e7d40000"; -- stw r10, 0(r8)
+       when "0010101" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0010110" => data_out <= x"ed573dc8"; -- ldi r10, 0xe7b9
+       when "0010111" => data_out <= x"e5552000"; -- lls r10, r10, 8
+       when "0011000" => data_out <= x"e1550400"; -- addi r10, r10, 0x80
+       when "0011001" => data_out <= x"e5552000"; -- lls r10, r10, 8
+       when "0011010" => data_out <= x"e7d48000"; -- stw r10, 0(r9)
+       when "0011011" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0011100" => data_out <= x"ed500010"; -- ldi r10, 2
+       when "0011101" => data_out <= x"e7d40000"; -- stw r10, 0(r8)
+       when "0011110" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0011111" => data_out <= x"ed573dc0"; -- ldi r10, 0xe7b8
+       when "0100000" => data_out <= x"e5552000"; -- lls r10, r10, 8
+       when "0100001" => data_out <= x"e1550400"; -- addi r10, r10, 0x80
+       when "0100010" => data_out <= x"e5552000"; -- lls r10, r10, 8
+       when "0100011" => data_out <= x"e7d48000"; -- stw r10, 0(r9)
+       when "0100100" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0100101" => data_out <= x"ed500018"; -- ldi r10, 3
+       when "0100110" => data_out <= x"e7d40000"; -- stw r10, 0(r8)
+       when "0100111" => data_out <= x"e4555000"; -- xor r10, r10, r10
+       when "0101000" => data_out <= x"ed575800"; -- ldi r10, 0xeb00
+       when "0101001" => data_out <= x"e5554000"; -- lls r10, r10, 16
+       when "0101010" => data_out <= x"e1550040"; -- addi r10, r10, 0x8
+       when "0101011" => data_out <= x"e7d48000"; -- stw r10, 0(r9)
+       -- just nop until rom end!
+       when others => data_out <= x"fd000000";
                        end case;
                end if;
        end process;