added soft reset

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

diff --git a/cpu/src/pipeline_tb.vhd b/cpu/src/pipeline_tb.vhd
index 7392a95a350758f4750410e401947ced54d52c38..eda81023058f86351b0850bded6ddccc83fd102a 100644 (file)
--- a/cpu/src/pipeline_tb.vhd
+++ b/cpu/src/pipeline_tb.vhd
@@ -18,8 +18,10 @@ end pipeline_tb;
 -------------------------------------------------------------------------------
 architecture behavior of pipeline_tb is
 
-       constant cc : time := 30 ns;        -- test clock period
-       
+       constant cc : time := 20 ns;        -- test clock period
+       constant SYS_CLOCK_FREQ : integer := 50000000;
+       constant BAUD_COUNT : integer := SYS_CLOCK_FREQ/115200;
+
                signal sys_clk_pin : std_logic;
                signal sys_res_n_pin : std_logic;
                --Data input
@@ -48,7 +50,7 @@ architecture behavior of pipeline_tb is
                  signal dmem_pin  : std_logic;--memop
                  signal dmem_wr_en_pin : std_logic;
                  signal hword_pin  : std_logic;
-                 signal byte_s_pin : std_logic;
+                 signal byte_s_pin, tx_pin, rx_pin : std_logic;
                                 
                                  signal gpm_in_pin : extmod_rec;
                                 signal gpm_out_pin : gp_register_t;
@@ -56,6 +58,11 @@ architecture behavior of pipeline_tb is
 
                 signal cycle_cnt : integer;
 
+               signal sseg0, sseg1, sseg2, sseg3 : std_logic_vector(0 to 6);
+               signal int_req_pin : interrupt_t;
+
+               signal new_im_data :std_logic;
+               signal im_addr, im_data : gp_register_t;
 
 begin
 
@@ -85,16 +92,20 @@ begin
                --System inputs
                        clk => sys_clk_pin, --: in std_logic;
                        reset => sys_res_n_pin, --: in std_logic;
-               
+                       s_reset => '0',
                --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;
+                       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
+                       prog_cnt => prog_cnt,
+                       int_req => int_req_pin
                );      
 
        decode_st : decode_stage
@@ -130,10 +141,10 @@ begin
                 data_pin, alu_jump_pin,brpr_pin, wr_en_pin, dmem_pin,dmem_wr_en_pin,hword_pin,byte_s_pin, gpm_out_pin);
 
           writeback_st : writeback_stage
-                generic map('0', '1')
+                generic map('0', '1', "altera",50)
                 port map(sys_clk_pin, sys_res_n_pin, result_pin, result_addr_pin, addr_pin, data_pin, alu_jump_pin, brpr_pin, 
                 wr_en_pin, dmem_pin, dmem_wr_en_pin, hword_pin, byte_s_pin,
-                reg_wr_data_pin, reg_we_pin, reg_w_addr_pin, jump_result_pin, alu_jump_bit_pin);
+                reg_wr_data_pin, reg_we_pin, reg_w_addr_pin, jump_result_pin, alu_jump_bit_pin, tx_pin, rx_pin, new_im_data, im_addr, im_data, sseg0, sseg1, sseg2, sseg3, int_req_pin);
 
 
 
@@ -175,12 +186,26 @@ begin
         wait until sys_clk_pin = '1' and sys_clk_pin'event;
       end loop;
     end;
+
+       procedure txd(trans_data : in std_logic_vector) is
+       begin
+               for i in 0 to 9 loop
+                       rx_pin <= trans_data(i);
+                       report "bit: " & std_logic'image(trans_data(i));
+                       dummy <= not dummy;
+                       wait on dummy;
+                       -- icwait(BAUD_COUNT);
+                       icwait(50);
+               end loop;
+       end txd;
+
        
   begin
     -----------------------------------------------------------------------------
     -- initial reset
     -----------------------------------------------------------------------------
        sys_res_n_pin <= '0';
+       rx_pin <= '1';
 --     reg_w_addr_pin <= (others => '0');
 --     reg_wr_data_pin <= (others => '0');
 --     reg_we_pin <= '0';
@@ -190,8 +215,14 @@ begin
        sys_res_n_pin <= '1';
        wait until sys_res_n_pin = '1';
        
+       icwait(10);
+
+       txd("0000100101");
+       icwait(600);
+       icwait(600);
 
-       icwait(100000);
+       txd("0000100101");
+       icwait(600000000);
 
     ---------------------------------------------------------------------------
     -- exit testbench