bugfix

chapter5/RISCcore2TB.v

@@ -0,0 +1,40 @@
+module RISCcore2TB;
+  reg clk;
+  reg rst;
+  wire [31:0] pc;
+  wire [31:0] next_pc;
+  wire [31:0] instr;
+  
+  // Instantiate RISC core
+  RISCcore2 uut (
+    .rst(rst),
+    .clk(clk),
+    .pc(pc),
+    .next_pc(next_pc),
+    .instr(instr)
+  );
+  
+  // Clock generation
+  always #5 clk = ~clk;
+  
+  // Monitor
+  always @(posedge clk) begin
+    if (!rst) begin
+      $display("Time=%0t, PC=%h, Next_PC=%h, Instr=%h", $time, pc, next_pc, instr);
+      if (pc >= 32'h100) begin // Safety stop
+        $display("Simulation completed!");
+        $finish;
+      end
+    end
+  end
+  
+  // Initialize
+  initial begin
+    clk = 0;
+    rst = 1;
+    #15 rst = 0;
+    #500;
+    $display("Test completed");
+    $finish;
+  end
+endmodule