Added code to support getting interrupts from the PIC. Can now get some data from the keyboard, however, it's not quite working yet.

kernel/screen.c

@@ -119,3 +119,38 @@ int strlen(char* string)
 	
 	return len;
 }
+
+//Code reference:
+//http://www.strudel.org.uk/itoa/
+char* int_to_string(unsigned int value, int base)
+{
+	static char buf[32] = {0};
+	//void* ptr = Malloc(32);
+	//if(ptr == 0)
+	//{
+		//puts("Malloc failed to allocate!\n");
+		//return "";
+	//}
+	
+	//char buf = (char*) ptr;
+	
+	if(value == 0)
+	{
+		buf[0] = '0';
+		//*buf++ = '0';
+		//return buf;
+		return &buf[0];
+	}
+
+	int i = 30;
+
+	for(; value && i; --i, value /= base)
+	{
+		//*buf++ = "0123456789ABCDEF"[value % base];
+		buf[i] = "0123456789ABCDEF"[value % base];
+	}
+	
+	//Free(ptr);
+	//return buf;
+	return &buf[i+1];
+}