Old Anatolian Turkish (Turkish: Eski Anadolu Türkçesi), also referred to as Old Anatolian Turkic, was the form of the Turkish language spoken in Anatolia from the 11th to 15th centuries. It developed into Early Ottoman Turkish and Middle Azerbaijani. It was written in the Perso-Arabic script. Unlike in later Ottoman Turkish, short-vowel diacritics were used.
It had no official status until 1277, when Mehmet I of Karaman declared a firman in an attempt to break the dominance of Persian: