diff --git a/src/kernel/exception.rs b/src/kernel/exception.rs
index 2c7f0d3..1c2e1d5 100644
--- a/src/kernel/exception.rs
+++ b/src/kernel/exception.rs
@@ -172,7 +172,13 @@ fn syscall(machine: &mut Machine, system: &mut System) -> Result<MachineOk, Mach
         SC_PERROR => todo!(),
         SC_P => todo!(),
         SC_V => todo!(),
-        SC_SEM_CREATE => todo!(),
+        SC_SEM_CREATE => {
+            let addr_name = machine.read_int_register(10);
+            let initial_count = machine.read_int_register((11));
+            let size = get_length_param(addr_name as usize, machine);
+            Ok(MachineOk::Ok)
+
+        },
         SC_SEM_DESTROY => todo!(),
         SC_LOCK_CREATE => todo!(),
         SC_LOCK_DESTROY => todo!(),
@@ -196,6 +202,35 @@ fn syscall(machine: &mut Machine, system: &mut System) -> Result<MachineOk, Mach
     }
 }
 
+fn get_length_param(addr: usize, machine: & Machine) -> usize{
+    let mut i = 0;
+    let mut c = 1;
+    while c!= 0 {
+        c = machine.read_memory(1, addr + i);
+        i+=1;
+
+    }
+    i + 1
+}
+
+fn get_string_param(addr: i64, maxlen: i64, machine: &Machine) -> Vec<char>{
+    let mut dest = Vec::with_capacity(maxlen as usize);
+
+    let mut i = 0;
+    let mut c = 1;
+
+    while c != 0 && i < maxlen {
+        c = machine.read_memory(1, (addr + i) as usize);
+        //dest.push(c as char);
+        dest[i] = c as char;
+        i += 1;
+    }
+
+    dest[maxlen - 1] = '\0';
+
+    dest
+}
+
 #[cfg(test)]
 mod test {
     use crate::kernel::exception::{SC_SHUTDOWN, SC_WRITE};
@@ -241,7 +276,7 @@ mod test {
 
         machine.write_memory(4, 4, 0b000000000000_00000_000_10001_0010011); // r17 <- SC_SHUTDOWN
         machine.write_memory(4, 8, 0b000000000000_00000_000_00000_1110011); // ecall
-        
+
         let mut system = System::default();
         machine.run(&mut system);
     }