Fire data strobe when ADDR_ERR or TRANSFER_ERR

src/vme_data_bus.vhd

@@ -200,7 +200,7 @@ architecture rtl of vme_data_bus is
     LATCH_DATA,         -- 6
     BLT_READ_WAIT,      -- 7
     BLT_WRITE_WAIT,     -- 8
-    IDLE_DELAY,         -- 9
+    FIRE_DATA_STROBE,         -- 9
     TIMEOUT,            -- 10
     TIMEOUT_WAIT,       -- 11
     BERR_HIGH_WAIT      -- 12
@@ -336,10 +336,10 @@ begin
 
             if addr_mode = ADDR_ERR then
               int_err_code <= c_ERR_ADDR_MODE;
-              state <= IDLE_DELAY;
+              state <= FIRE_DATA_STROBE;
             elsif transfer_mode = TRANSFER_ERR then
               int_err_code <= c_ERR_TRANSFER_MODE;
-              state <= IDLE_DELAY;
+              state <= FIRE_DATA_STROBE;
             else                 
               -- Table 2-4 and Table 2-29
               -- A[0] = LWORD*
@@ -659,11 +659,13 @@ begin
           -- are not working on behalf of the client.
 
 
-        -- Delay return to IDLE.          
-        when IDLE_DELAY =>
+        -- Delay firing of data strobe
+        when FIRE_DATA_STROBE =>
           state <= IDLE;
+          int_data_strobe <= c_DATA_PRESENT;
           busy <= '0';
           
+
         -- Timeout!  Something is preventing the state machine
         -- from completing.  Either an external error (e.g. a
         -- non-responding module), or a bug in this code.
@@ -737,7 +739,6 @@ begin
       
       if (last_ds_n /= vme_ds_n_i or -- 
           state    = IDLE or
-          state    = IDLE_DELAY or
           state    = TIMEOUT or
           state    = TIMEOUT_WAIT or
           state    = BERR_HIGH_WAIT) then
@@ -848,14 +849,14 @@ begin
     -- psl when_unsupported_addr_mode_issue_error_code:
     --   assert always {state = IDLE and int_vme_go = '1' and addr_mode = ADDR_ERR}
     --     |=> int_err_code = c_ERR_ADDR_MODE
-    --     and state = IDLE_DELAY;
+    --     and state = FIRE_DATA_STROBE;
 
     -- psl when_unsupported_transfer_mode_issue_error_code:
     --   assert always {state = IDLE and int_vme_go = '1'
     --                  and transfer_mode = TRANSFER_ERR
     --                  and addr_mode /= ADDR_ERR}
     --     |=> int_err_code = c_ERR_TRANSFER_MODE
-    --     and state = IDLE_DELAY;        
+    --     and state = FIRE_DATA_STROBE;        
 
     -- -- If DTACK* is LOW after AS_DELAY,
     -- -- then we must wait for data lines to clear.