diff --git a/dependencies/xv6/fs.img b/dependencies/xv6/fs.img
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diff --git a/dependencies/xv6/kernel b/dependencies/xv6/kernel
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index 0000000..61709d2
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diff --git a/dependencies/xv6/kernel.bin b/dependencies/xv6/kernel.bin
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diff --git a/src/cpu.rs b/src/cpu.rs
index d509683..2ea2b8e 100644
--- a/src/cpu.rs
+++ b/src/cpu.rs
@@ -1011,12 +1011,12 @@ impl Cpu {
   /// Execute a general-purpose instruction. Raises an exception if something is wrong,
   /// otherwise, returns a fetched instruction. It also increments the program counter by 4 bytes.
   fn execute_general(&mut self, inst: u64) -> Result<(), Exception> {
-    match self.inst.set_bits(inst as u32) {
-      Ok(_) => {}
-      Err(_) => {
-        panic!("unknown inst, pc: {:x}, inst: {:x}", self.pc, self.inst.bits);
-      }
-    }
+    // match self.inst.set_bits(inst as u32) {
+    //   Ok(_) => {}
+    //   Err(_) => {
+    //     panic!("unknown inst, pc: {:x}, inst: {:x}", self.pc, self.inst.bits);
+    //   }
+    // }
     // 2. Decode.
     let opcode = inst & 0x0000007f;
     // let rd = self.inst.rd as u64;