diff --git a/src/simulator/mem_cmp.rs b/src/simulator/mem_cmp.rs
index 3e2ccd6..c8436a3 100644
--- a/src/simulator/mem_cmp.rs
+++ b/src/simulator/mem_cmp.rs
@@ -94,7 +94,10 @@ impl Mem_Checker{
     pub fn from(path: &String) -> Mem_Checker {
 
         let file = fs::File::open("test_file_section.txt").expect("Wrong filename");
-        let reader = io::BufReader::new(file);
+        let reader = io::BufReader::new(&file);
+        let reader2 = io::BufReader::new(&file);
+        let lines = reader.lines();
+        let length = reader2.lines().count();
 
         let mut pc: usize = 0;
         let mut sp: usize = 0;
@@ -103,15 +106,15 @@ impl Mem_Checker{
         let mut tmp_addr_str: String = String::new();
         let mut tmp_len_str: String = String::new();
 
-        for (i,line) in reader.lines().enumerate() {
+        for (i,line) in lines.enumerate() {
 
             let current_line = line.unwrap();
 
-            if i == current_line.len()-2 {
+            if i == length-2 {
                 //Lecture de PC
                 pc = string_hex_to_usize(&current_line);
             }
-            else if i == current_line.len()-1 {
+            else if i == length-1 {
                 //Lecture SP
                 sp = string_hex_to_usize(&current_line);
             }
@@ -277,7 +280,6 @@ mod tests {
 
     }
 
-
     #[test]
     fn test_enum_start_at_zero(){
         let v = vec![1,2,3];
diff --git a/src/simulator/print.rs b/src/simulator/print.rs
index 0567fef..4cf103b 100644
--- a/src/simulator/print.rs
+++ b/src/simulator/print.rs
@@ -142,79 +142,76 @@ pub fn print(ins: Instruction, pc: i32) -> String { //TODO pc should be u64
             let name: &str;
             match ins.funct7 {
                 RISCV_FP_ADD => {
-                    name = "fadd";
+                    format!("{}\t{}{}{}", "fadd", REG_F[rd], REG_F[rs1], REG_F[rs2])
                 },
                 RISCV_FP_SUB => {
-                    name = "fsub";
+                    format!("{}\t{}{}{}", "fsub.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                 },
                 RISCV_FP_MUL => {
-                    name = "fmul";
+                    format!("{}\t{}{}{}", "fmul.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                 },
                 RISCV_FP_DIV => {
-                    name = "fdiv";
+                    format!("{}\t{}{}{}", "fdiv.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                 },
                 RISCV_FP_SQRT => {
-                    name = "fsqrt";
+                    format!("{}\t{}{}", "fsqrt.s", REG_F[rd], REG_F[rs1])
                 },
                 RISCV_FP_FSGN => {
-
                     match ins.funct3 {
                         RISCV_FP_FSGN_J => {
-                            name = "fsgnj";
+                            format!("{}\t{}{}{}", "fsgnj.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                         },
                         RISCV_FP_FSGN_JN => {
-                            name = "fsgnn";
+                            format!("{}\t{}{}{}", "fsgnn.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                         },
                         RISCV_FP_FSGN_JX => {
-                            name = "fsgnx";
+                            format!("{}\t{}{}{}", "fsgnx.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                         },
-                        _ => name = "fsgn"
+                        _ => todo!("Unknown code")
                     }
                 },
                 RISCV_FP_MINMAX => {
                     if ins.funct3 == 0 {
-                        name = "fmin";
+                        format!("{}\t{}{}{}", "fmin.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                     } else {
-                        name = "fmax";
+                        format!("{}\t{}{}{}", "fmax.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                     }
                 },
                 RISCV_FP_FCVTW => {
                     if rs2 == 0 {
-                        name = "fcvt.w.s";
+                        format!("{}\t{}{}", "fcvt.w.s", REG_F[rd], REG_F[rs1])
                     } else {
-                        name = "fcvt.wu.s";
+                        format!("{}\t{}{}", "fcvt.wu.s", REG_F[rd], REG_F[rs1])
                     }
-                    
                 },
                 RISCV_FP_FMVXFCLASS => {
                     if ins.funct3 == 0 {
-                        name = "fmv.x.w";
+                        format!("{}\t{}{}", "fmv.x.w", REG_F[rd], REG_F[rs1])
                     } else {
-                        name = "fclass.s";
+                        format!("{}\t{}{}", "fclass.s", REG_F[rd], REG_F[rs1])
                     }
                 },
                 RISCV_FP_FCMP => {
                     if ins.funct3 == 0 {
-                        name = "fle.s";
+                        format!("{}\t{}{}{}", "fle.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                     } else if ins.funct3 == 1 {
-                        name = "flt.s";
+                        format!("{}\t{}{}{}", "flt.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                     } else {
-                        name = "feq.s";
+                        format!("{}\t{}{}{}", "feq.s", REG_F[rd], REG_F[rs1], REG_F[rs2])
                     }
                 },
                 RISCV_FP_FCVTS => {
                     if rs2 == 0 {
-                        name = "fcvt.s.w"
+                        format!("{}\t{}{}", "fcvt.s.w", REG_F[rd], REG_F[rs1])
                     } else {
-                        name = "fcvt.s.wu"
+                        format!("{}\t{}{}", "fcvt.s.wu", REG_F[rd], REG_F[rs1])
                     }
                 },
                 RISCV_FP_FMVW => {
-                    name = "fmv.w.x";
+                    format!("{}\t{}{}", "fmv.w.x", REG_F[rd], REG_F[rs1])
                 },
-                _ => name = "todo"
+                _ => todo!("Unknown code")
             }
-            format!("{}\t{}{}{}", name, REG_F[rd], REG_F[rs1], REG_F[rs2])
         },
         
         RISCV_SYSTEM => {
diff --git a/test_file_section.txt b/test_file_section.txt
index 05d3ead..df1b0d2 100644
--- a/test_file_section.txt
+++ b/test_file_section.txt
@@ -1,8 +1,15 @@
-0
-0
-FF FF
-F4A12200
-A0 0A
-01022B
-0B 0F
-FFACBC5CEF
+addi    sp,sp,-32
+sd      s0,24(sp)
+addi    s0,sp,32
+sw      zero,-20(s0)
+li      a5,1
+sw      a5,-24(s0)
+lw      a5,-20(s0)
+mv      a4,a5
+lw      a5,-24(s0)
+addw    a5,a4,a5
+sw      a5,-20(s0)
+nop
+ld      s0,24(sp)
+addi    sp,sp,32
+ret
\ No newline at end of file
diff --git a/test_programs/riscv_instructions/simple_arithmerics/unsigned_addition.o b/test_programs/riscv_instructions/simple_arithmerics/unsigned_addition.o
new file mode 100644
index 0000000..3d69445
Binary files /dev/null and b/test_programs/riscv_instructions/simple_arithmerics/unsigned_addition.o differ