diff --git a/src/main.rs b/src/main.rs
index 6e4d2c7..bc3da12 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,7 +8,7 @@ fn main() {
     let path = "memory.txt".to_string();
     let checker = mem_cmp::Mem_Checker::from(&path);
     mem_cmp::Mem_Checker::fill_memory_from_Mem_Checker(&checker, &mut m);
-    mem_cmp::Mem_Checker::print_Mem_Checker(&checker);
-    Machine::print_memory(&mut m, 0x400000, 0x405000);
+    //mem_cmp::Mem_Checker::print_Mem_Checker(&checker);
+    //Machine::print_memory(&mut m, 0x400000, 0x405000);
     Machine::run(m);
 }
diff --git a/src/simulator/machine.rs b/src/simulator/machine.rs
index bd5617a..c3a5659 100644
--- a/src/simulator/machine.rs
+++ b/src/simulator/machine.rs
@@ -1,5 +1,7 @@
 use std::{ops::{Add, Sub}, io::Write};
 
+use crate::simulator::print;
+
 use super::{decode::{Instruction, decode}};
 use super::global::*;
 use std::fs::File;
@@ -40,7 +42,7 @@ impl Register<i64> {
 			self.register[position] = value;
 		} else {
 			// Panic ou rien ? (dans le doute pour le moment panic)
-			unreachable!("You can't write to zero register")
+			// unreachable!("You can't write to zero register")
 		}
 	}
 
@@ -148,6 +150,14 @@ impl Machine {
 		file.write(&machine.main_memory);
 	}
 
+	pub fn print_machine_status(machine: &mut Machine) {
+		println!("######### Machine status #########");
+		for i in 0..32 {
+			println!(">{} : {:x}", print::REG_X[i], machine.int_reg.get_reg(i));
+		}
+		println!("##################################");
+	}
+
 	/// Execute the instructions table of a machine putted in param
 	/// 
 	/// ### Parameters
@@ -182,13 +192,15 @@ impl Machine {
 		if machine.main_memory.len() <= machine.pc as usize {
 			panic!("ERROR : number max of instructions rushed");
 		}
-		let mut val: [u8; 8] = [0; 8];
-		for i in 0..8 {
+		let mut val: [u8; 4] = [0; 4];
+		for i in 0..4 {
 			val[i] = machine.main_memory[machine.pc as usize + i];
 		}
 
-		let val = u64::from_be_bytes(val);
-		println!("{:x}", val);
+		let val = u32::from_be_bytes(val) as u64;
+		Self::print_machine_status(machine);
+		println!("executing instruction : {:016x} at pc {:x}", val, machine.pc);
+		println!("{}", print::print(decode(val), machine.pc as i32));
 		let inst : Instruction = decode(val);
 		
 		
@@ -602,7 +614,7 @@ impl Machine {
 					}
 				}
 			}
-			_ => { panic!("{:x} opcode non géré  pc : {:x}", inst.opcode, machine.pc)},
+			_ => { panic!("{:x} opcode non géré pc : {:x}", inst.opcode, machine.pc)},
 		}
 
 		machine.pc += 4; // Possible bug avec jump
diff --git a/src/simulator/mem_cmp.rs b/src/simulator/mem_cmp.rs
index 94aac44..316df70 100644
--- a/src/simulator/mem_cmp.rs
+++ b/src/simulator/mem_cmp.rs
@@ -160,6 +160,7 @@ impl Mem_Checker{
     pub fn fill_memory_from_Mem_Checker(m_c: &Mem_Checker, machine: &mut Machine){
         
         machine.sp = m_c.sp;
+        machine.int_reg.set_reg(2, m_c.pc as i64);
         machine.pc = m_c.pc as u64;
 
 
diff --git a/src/simulator/print.rs b/src/simulator/print.rs
index 0539a43..60a2936 100644
--- a/src/simulator/print.rs
+++ b/src/simulator/print.rs
@@ -13,7 +13,7 @@ const NAMES_OPIW: [&str; 8] = ["addiw", "slliw", "", "", "", "sri", "", ""];
 
 
 // Register name mapping
-const REG_X: [&str; 32] = ["zero", "ra", "sp", "gp", "tp", "t0", "t1", "t2", "s0", "s1",
+pub const REG_X: [&str; 32] = ["zero", "ra", "sp", "gp", "tp", "t0", "t1", "t2", "s0", "s1",
 "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7",
 "s2", "s3", "s4", "s5", "s6", "s7", "s8", "s9", "s10", "s11",
 "t3", "t4", "t5", "t6"];
@@ -78,7 +78,7 @@ pub fn print(ins: Instruction, pc: i32) -> String { //TODO pc should be u64
             format!("jal\t{},{:x}", REG_X[rd], (pc + ins.imm21_1_signed)) 
         },
         RISCV_JALR => {
-            format!("jalr\t{},{}({})", REG_X[rd], ins.imm12_I_signed, REG_X[rs1])
+            format!("jalr\t{},{:x}({})", REG_X[rd], ins.imm12_I_signed, REG_X[rs1])
         },
         RISCV_BR => {
             format!("{}\t{},{},{:x}", NAMES_BR[ins.funct3 as usize], REG_X[rs1], REG_X[rs2], pc + (ins.imm13_signed as i32))