Added timeout signal

src/vme_data_bus.vhd

@@ -181,7 +181,7 @@ entity vme_data_bus is
 
     signal int_blt_decided      : in std_logic;
     signal int_blt_continue     : in std_logic;
-    signal int_timeout_n        : in std_logic;
+    signal int_timeout_n        : in std_logic
 
     );
 end entity;
@@ -475,11 +475,11 @@ begin
           if (vme_berr_n_i & int_timeout_n /= "11") then
             vme_ds_n_o <= "11";
             vme_as_n_o <= '1';
-            if (int_timeout_n = '0') then
-              int_err_code <= c_ERR_TIMEOUT;
-            else
-              int_err_code <= c_ERR_BERR;
-            end if;            
+            int_err_code <= (
+              c_ERR_BERR_I => not vme_berr_n_i,
+              c_ERR_TIMEOUT_I => not int_timeout_n,
+              others => '0'
+            );            
             busy <= '0';
             state <= IDLE;
             

src/vme_pkg.vhd

@@ -90,6 +90,10 @@ package vme_pkg is
   constant c_ERR_ADDR_MODE      : err_vec_t := "0010";
   constant c_ERR_BERR           : err_vec_t := "0100";
   constant c_ERR_TIMEOUT        : err_vec_t := "1000";
+  constant c_ERR_TRANSFER_MODE_I: natural   := 0;
+  constant c_ERR_ADDR_MODE_I    : natural   := 1;
+  constant c_ERR_BERR_I         : natural   := 2;
+  constant c_ERR_TIMEOUT_I      : natural   := 3;
   
 end package;