diff --git a/lab1/src/main/scala/board/z710/Top.scala b/lab1/src/main/scala/board/z710/Top.scala
index 56c55d9..bcecb92 100644
--- a/lab1/src/main/scala/board/z710/Top.scala
+++ b/lab1/src/main/scala/board/z710/Top.scala
@@ -31,14 +31,14 @@ class Top(binaryFilename: String = "say_goodbye.asmbin") extends Module {
   val mem = Module(new Memory(Parameters.MemorySizeInWords))
   // val hdmi_display = Module(new HDMIDisplay)
   // val display = Module(new CharacterDisplay)
-  val timer = Module(new Timer)
+  // val timer = Module(new Timer)
   val uart = Module(new Uart(frequency = 32_000000, baudRate = 115200)) // 31M or 32M is good, 33M more error
   val dummy = Module(new Dummy)
 
   // display.io.bundle <> dummy.io.bundle
   mem.io.bundle <> dummy.io.bundle
   mem.io.debug_read_address := 0.U
-  timer.io.bundle <> dummy.io.bundle
+  // timer.io.bundle <> dummy.io.bundle
   uart.io.bundle <> dummy.io.bundle
   io.tx := uart.io.txd
   uart.io.rxd := io.rx
@@ -60,9 +60,9 @@ class Top(binaryFilename: String = "say_goodbye.asmbin") extends Module {
 
   withClock(CPU_tick.asClock) {
     val cpu = Module(new CPU)
-    cpu.io.interrupt_flag := Cat(uart.io.signal_interrupt, timer.io.signal_interrupt)
-    cpu.io.csr_regs_debug_read_address := 0.U
-    cpu.io.regs_debug_read_address := 0.U
+    // cpu.io.interrupt_flag := Cat(uart.io.signal_interrupt, timer.io.signal_interrupt)
+    // cpu.io.csr_regs_debug_read_address := 0.U
+    // cpu.io.regs_debug_read_address := 0.U
     cpu.io.debug_read_address := 0.U
     // cpu.io.memory_bundle.read_data := 0.U
     cpu.io.instruction_valid := rom_loader.io.load_finished