diff --git a/include/port.h b/include/port.h
new file mode 100644
index 0000000..90e86d2
--- /dev/null
+++ b/include/port.h
@@ -0,0 +1,8 @@
+#include "types.h"
+
+void outreg(u16 port,u8 *src,u16 num);
+void outregsame(u16 port,u8 *src,u16 num);
+void inreg(u16 port,u8 *src,u16 num);
+void inregsame(u16 port,u8 *src,u16 num);
+void initreg(u16 port,u8 *src,u16 num);
+void initregsame(u16 port,u8 *src,u16 num);
\ No newline at end of file