diff --git a/src/kernel/exception.rs b/src/kernel/exception.rs
index b020f6e..bb99263 100644
--- a/src/kernel/exception.rs
+++ b/src/kernel/exception.rs
@@ -105,7 +105,13 @@ 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!(),
@@ -129,6 +135,17 @@ 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
+}
+
 #[cfg(test)]
 mod test {
     use crate::kernel::exception::{SC_SHUTDOWN, SC_WRITE};