diff --git a/challenge.mctf b/challenge.mctf
index 1132ed9..1570b4e 100644
Binary files a/challenge.mctf and b/challenge.mctf differ
diff --git a/src/main.rs b/src/main.rs
index 2fb9f0f..5a44d88 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -379,6 +379,7 @@ fn parse_instruction(mut bytes: &[u16]) -> (Instruction, usize) {
         consumed += 1;
 
         println!("{:016b}", aw);
+        aw >>= 4;
         for i in 0..register_count {
             registers.insert(0_usize, Register::into_register(aw & 0b1111));
             aw >>= 4;
@@ -452,6 +453,7 @@ impl Machine {
             OP::CALL => {
                 if self.RTRGT == 0 {
                 } else {
+
                     unimplemented!("calling not implemented");
                 }
             }
@@ -515,7 +517,7 @@ fn main() {
     m.SIN[1..=sin.inner().len()].copy_from_slice(sin.inner());
     m.SCODE[1..=code.inner().len()].copy_from_slice(code.inner());
 
-//    dump_instructions(&m.SCODE[1..]);
+//    dump_instructions(&m.SCODE[1..=code.inner().len()]);
 
     while m.step() {}
 }