 Inscriptions in Sanskrit and Kannada are the main source of information about the Badami Chalukya history. Among them, the Badami cave inscriptions of Mangalesha (578), Kappe Arabhatta record of c. 700, Peddavaduguru inscription of Pulakeshin II, the Kanchi Kailasanatha Temple inscription and Pattadakal Virupaksha Temple inscription of Vikramaditya II (all in Kannada language) provide more evidence of the Chalukya language. The Badami cliff inscription of Pulakeshin I (543), the Mahakuta Pillar inscription of Mangalesha (595) and the Aihole inscription of Pulakeshin II (634) are examples of important Sanskrit inscriptions written in old Kannada script. The reign of the Chalukyas saw the arrival of Kannada as the predominant language of inscriptions along with Sanskrit, in areas of the Indian peninsula outside what is known as Tamilaham (Tamil country). Several coins of the Badami Chalukyas with Kannada legends have been found. All this indicates that Kannada language flourished during this period.
