1 files changed, 63 insertions, 0 deletions
diff --git a/midterm/SRC/scoreboard_monitor.sv b/midterm/SRC/scoreboard_monitor.sv
new file mode 100644
index 0000000..a51baa0
--- /dev/null
+++ b/midterm/SRC/scoreboard_monitor.sv
@@ -0,0 +1,63 @@
+import typedef_pkg::*;
+
+class scoreboard_monitor;
+  localparam int TOTAL_TESTS = 4 * 256 * 256;
+
+  virtual intf alu_if;
+  transaction  tr;
+
+  function result_t compute_expected_value(input operation_t operation, input operand_t operand_a,
+                                           input operand_t operand_b, input result_t actual_result);
+    automatic result_t expected_result;
+
+    case (operation)
+      ADD: begin
+        expected_result = (operand_a + operand_b) & 16'h01FF;
+        `FAIL_UNLESS_EQUAL(expected_result & 16'h01FF, actual_result & 16'h01FF, $sformatf(
+                           "ADD a=%0d b=%0d", operand_a, operand_b))
+      end
+      MULT: begin
+        expected_result = operand_a * operand_b;
+        `FAIL_UNLESS_EQUAL(expected_result, actual_result, $sformatf(
+                           "MULT a=%0d b=%0d", operand_a, operand_b))
+      end
+      OR: begin
+        expected_result = (operand_a | operand_b) & 16'h00FF;
+        `FAIL_UNLESS_EQUAL(expected_result & 16'h00FF, actual_result & 16'h00FF, $sformatf(
+                           "OR a=%0d b=%0d", operand_a, operand_b))
+      end
+      AND: begin
+        expected_result = (operand_a & operand_b) & 16'h00FF;
+        `FAIL_UNLESS_EQUAL(expected_result & 16'h00FF, actual_result & 16'h00FF, $sformatf(
+                           "AND a=%0d b=%0d", operand_a, operand_b))
+      end
+      default: begin
+        expected_result = '0;
+      end
+    endcase
+
+    return expected_result;
+  endfunction
+
+  task check();
+    for (int i = 0; i < TOTAL_TESTS; i++) begin
+      @(posedge alu_if.clk iff (alu_if.op_start == 1'b1));
+
+      tr.operation = alu_if.operation;
+      tr.operand_a = alu_if.operand_a;
+      tr.operand_b = alu_if.operand_b;
+
+      @(posedge alu_if.clk);
+      @(posedge alu_if.clk);
+      @(negedge alu_if.clk);
+
+      tr.actual_result = alu_if.result;
+      tr.expected_result =
+          compute_expected_value(tr.operation, tr.operand_a, tr.operand_b, tr.actual_result);
+
+      tr.print();
+    end
+
+    $display("Scoreboard check complete. Total tests: %0d", TOTAL_TESTS);
+  endtask
+endclass