diff --git a/npc/core/src/main/scala/Main.scala b/npc/core/src/main/scala/Main.scala
index b523843..2ac6b7e 100644
--- a/npc/core/src/main/scala/Main.scala
+++ b/npc/core/src/main/scala/Main.scala
@@ -100,6 +100,7 @@ class Flow extends Module {
   ram.readPorts(0).enable := true.B
   ram.readPorts(0).address := pc.out - 0x80000000L.U
   val inst = ram.readPorts(0).data
+  printf(cf"$inst\n")
 
   import control.pc.SrcSelect._
 
diff --git a/npc/waveform.vcd b/npc/waveform.vcd
index 72c696a..a3bc5ab 100644
--- a/npc/waveform.vcd
+++ b/npc/waveform.vcd
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