diff --git a/src/main.rs b/src/main.rs
index 899b21d..0b037fa 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -244,8 +244,8 @@ fn nmi_test() -> Result<(), String> {
     // let r = syscall::call::nanosleep(&a,&mut b);
     // println!("{r:?}");
 
-    let r = syscall::call::nmi();
-    println!("{r:?}");
+    // let r = syscall::call::nmi();
+    // println!("{r:?}");
 
     // let a = vec![0];
     // unsafe {
@@ -259,8 +259,22 @@ fn nmi_test() -> Result<(), String> {
     //     a-=1;
     // }
 
+    // unsafe {
+    //     std::arch::asm!(
+    //     "
+    //     xor rdx, rdx
+    //     mov rax, rdx
+    //     div rdx
+    //     ")
+    // }
 
-    // const ADDR: usize = 0xDEADC0DE;
+    //const ADDR: usize = 0xDEADC0DE;
+    // unsafe {
+    //     std::arch::asm!(
+    //     "
+    //        mov rdx, [0xDEADC0DE]
+    //     ")
+    // }
     // println!("value {}", unsafe { (ADDR as *const u8).read_volatile() });
     // unsafe{
     //     syscall::fmap(!0, &Map { offset: 0, address: ALIGNED_ADDR, size: PAGE_SIZE, flags: MapFlags::MAP_FIXED_NOREPLACE | MapFlags::MAP_PRIVATE | MapFlags::PROT_READ | MapFlags::PROT_WRITE }).expect("[signal handler]: failed to re-map address");