diff --git a/X. NU/custom/mach_call_demo.c b/X. NU/custom/mach_call_demo.c
new file mode 100644
index 0000000..6da2112
--- /dev/null
+++ b/X. NU/custom/mach_call_demo.c	
@@ -0,0 +1,8 @@
+#include <mach/mach.h>
+
+int main() {
+    mach_port_t port;
+    mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &port);
+    return 0; // Port allocation directly interacts with kernelspace
+}
+
diff --git a/X. NU/custom/system_call_demo.c b/X. NU/custom/system_call_demo.c
new file mode 100644
index 0000000..48751b8
--- /dev/null
+++ b/X. NU/custom/system_call_demo.c	
@@ -0,0 +1,8 @@
+#include <unistd.h>
+
+int main() {
+    const char *message = "Hello, Kernelspace!\n";
+    write(1, message, 20); // Direct system call to write to stdout
+    return 0;
+}
+
diff --git a/X. NU/mac/XNU_exception_handling_map.png b/X. NU/mac/XNU_exception_handling_map.png
new file mode 100644
index 0000000..450b248
Binary files /dev/null and b/X. NU/mac/XNU_exception_handling_map.png differ