diff --git a/include/kernel/utils.h b/include/kernel/utils.h
index eb23480..0bd8ba1 100755
--- a/include/kernel/utils.h
+++ b/include/kernel/utils.h
@@ -1,5 +1,10 @@
+#pragma once
 #include <stddef.h>
 
 /* A temporary file, to get the system compiling. */
 
-size_t strlen(const char*);
\ No newline at end of file
+size_t strlen(const char*);
+
+unsigned char inb(unsigned short);
+
+void outb(unsigned short, unsigned char);
\ No newline at end of file
diff --git a/kernel/utils.c b/kernel/utils.c
index 739d608..8040f47 100755
--- a/kernel/utils.c
+++ b/kernel/utils.c
@@ -1,3 +1,4 @@
+
 #include <stddef.h>
 
 size_t strlen(const char* string) {
@@ -5,4 +6,14 @@ size_t strlen(const char* string) {
 	while (string[size]) 
 		size++;
 	return size;
-}
\ No newline at end of file
+}
+
+unsigned char inb(unsigned short port) {
+	unsigned char ptr;
+	asm volatile("inb %1, %0" : "=a" (ptr) : "dN" (port));
+	return ptr;
+}
+
+void outb(unsigned short port, unsigned char data) {
+	asm volatile("outb %1, %0" : : "dN" (port), "a" (data));
+}