diff --git a/include/gint/keyboard.h b/include/gint/keyboard.h
index 48aaef6..8225954 100644
--- a/include/gint/keyboard.h
+++ b/include/gint/keyboard.h
@@ -244,4 +244,18 @@ key_event_t getkey_opt(int options, volatile int *timeout);
    @next   Delay between subsequent repeats (no more than one hour) */
 void getkey_repeat(int first, int next);
 
+//---
+//	Key code functions
+//---
+
+/* keycode_function(): Identify keys F1 .. F6
+   This function returns number of each F-key (eg. it returns 2 for KEY_F2),
+   and -1 for other keys. */
+int keycode_function(int keycode);
+
+/* keycode_digit(): Identify keys 0 .. 9
+   This function returns the digit associated with digit keycodes (eg. it
+   returns 7 for KEY_7) and -1 for other keys. */
+int keycode_digit(int keycode);
+
 #endif /* GINT_KEYBOARD */
diff --git a/src/keysc/keycodes.c b/src/keysc/keycodes.c
new file mode 100644
index 0000000..c178599
--- /dev/null
+++ b/src/keysc/keycodes.c
@@ -0,0 +1,23 @@
+#include <gint/keyboard.h>
+
+/* keycode_function(): Identify keys F1 .. F6 */
+int keycode_function(int keycode)
+{
+	if((keycode & 0xf0) != 0x90) return -1;
+	return keycode & 0x0f;
+}
+
+/* keycode_digit(): Identify keys 0 .. 9 */
+int keycode_digit(int keycode)
+{
+	int row = keycode >> 4;
+	int col = keycode & 0xf;
+
+	if(col > 3) return -1;
+	if(keycode == 0x11) return 0;
+
+	int digit = 3 * row + col - 6;
+	if(digit >= 1 && digit <= 9) return digit;
+
+	return -1;
+}