soft reset

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

diff --git a/cpu/src/core_top.vhd b/cpu/src/core_top.vhd
index 07da7b24afca2dc4b0a8498ff0a93a5352a8905f..452db698062de0f4f2f9cc79f30a50d2b0d4988e 100644 (file)
--- a/cpu/src/core_top.vhd
+++ b/cpu/src/core_top.vhd
@@ -17,6 +17,7 @@ entity core_top is
                  -- uart
                        bus_tx : out std_logic;
                        bus_rx : in std_logic;
+                       led2 : out std_logic;
                        
                        sseg0 : out std_logic_vector(0 to 6);
                        sseg1 : out std_logic_vector(0 to 6);
@@ -67,6 +68,9 @@ architecture behav of core_top is
                 signal sys_res_n : std_logic;
 
                 signal int_req : interrupt_t;
+
+                signal new_im_data : std_logic;
+                signal im_addr, im_data : gp_register_t;
                 
                 signal vers, vers_nxt : exec2wb_rec;
 begin
@@ -82,17 +86,21 @@ begin
                --System inputs
                        clk => sys_clk, --: in std_logic;
                        reset => sys_res_n, --: in std_logic;
-               
+                       s_reset => '1',
                --Data inputs
                        jump_result => jump_result_pin, --: in instruction_addr_t;
                        prediction_result => prediction_result_pin, --: in instruction_addr_t;
                        branch_prediction_bit => branch_prediction_bit_pin,  --: in std_logic;
                        alu_jump_bit => alu_jump_bit_pin, --: in std_logic;
                        int_req => int_req,
-
+               -- instruction memory program port :D
+                       new_im_data_in => new_im_data,
+                       im_addr => im_addr,
+                       im_data => im_data,
                --Data outputs
                        instruction => instruction_pin, --: out instruction_word_t
-                       prog_cnt => prog_cnt_pin                
+                       prog_cnt => prog_cnt_pin,
+                       led2 => led2
                );
 
        decode_st : decode_stage
@@ -148,17 +156,20 @@ begin
 --
 
                        writeback_st : writeback_stage
-                generic map('0', '1')
+                generic map('0', '1', "altera")
                 port map(sys_clk, sys_res_n, vers_nxt.result, vers_nxt.result_addr, vers_nxt.address, vers_nxt.ram_data, vers_nxt.alu_jmp, vers_nxt.br_pred, 
                 vers_nxt.write_en, vers_nxt.dmem_en, vers_nxt.dmem_write_en, vers_nxt.hword, vers_nxt.byte_s,
-                reg_wr_data_pin, reg_we_pin, reg_w_addr_pin, jump_result_pin, alu_jump_bit_pin,bus_tx, bus_rx, sseg0, sseg1, sseg2, sseg3, int_req);
+                reg_wr_data_pin, reg_we_pin, reg_w_addr_pin, jump_result_pin, alu_jump_bit_pin,bus_tx, bus_rx,
+                               -- instruction memory program port :D
+                               new_im_data, im_addr, im_data,
+                               sseg0, sseg1, sseg2, sseg3, int_req);
 
 
 syn: process(sys_clk, sys_res)
 
 begin
 
-       if sys_res = '0' then
+       if sys_res = '1' then
 --                     vers.result <= (others => '0');
 --                     vers.result_addr <= (others => '0');
 --                     vers.address <= (others => '0');
@@ -175,7 +186,7 @@ begin
        
        elsif rising_edge(sys_clk) then
 --             vers <= vers_nxt;
-                       sync(1) <= sys_res;
+                       sync(1) <= not sys_res;
                        for i in 2 to SYNC_STAGES loop
                                sync(i) <= sync(i - 1);
                        end loop;