some debugging stuff and SECOND OPCODE!

src/core.rs

@@ -68,7 +68,7 @@ impl Core {
                     }
                 }
             } else {
-                eprintln!("Invalid Instruction");
+                eprintln!("Invalid Instruction 0x{:08x} 0b{:032b}", instr.0, instr.0);
                 break;
             }
         }