Loader seem to work, be seem we have a problem with jalr

src/simulator/loader.rs

@@ -59,7 +59,7 @@ pub fn load(path: &str, machine: &mut Machine, start_index: usize) -> Result<(),
     for i in 0..instructions.len() {
         machine.write_memory(4, 4 * i + start_index, instructions[i] as u64);
     }
-    #[cfg(debug_assertions)]
-    println!("{:04x?}", instructions); // only print loaded program in debug build
+    // #[cfg(debug_assertions)]
+    // println!("{:04x?}", instructions); // only print loaded program in debug build
     Ok(())
 }