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-rw-r--r--src/tb/tb_aes.v24
1 files changed, 22 insertions, 2 deletions
diff --git a/src/tb/tb_aes.v b/src/tb/tb_aes.v
index 188a21a..35fc1d9 100644
--- a/src/tb/tb_aes.v
+++ b/src/tb/tb_aes.v
@@ -307,6 +307,25 @@ module tb_aes();
//----------------------------------------------------------------
+ // wait_ready
+ //
+ // Wait for the DUT to signal that the result is ready
+ //----------------------------------------------------------------
+ task wait_ready;
+ begin : wait_ready
+ reg rdy;
+ rdy = 1'b0;
+
+ while (rdy != 1'b1)
+ begin
+ read_word(ADDR_STATUS);
+ rdy = tb_read_data[STATUS_READY_BIT];
+ end
+ end
+ endtask // wait_ready
+
+
+ //----------------------------------------------------------------
// read_result()
//
// Read the result block in the dut.
@@ -386,8 +405,9 @@ module tb_aes();
write_word(ADDR_CONFIG, (8'h00 + (key_length << 1)+ encdec));
write_word(ADDR_CTRL, 8'h02);
- #(100 * CLK_PERIOD);
-
+ wait_ready();
+ $display("*** Ready has been set!");
+ dump_dut_state();
read_result();
if (result_data == expected)