Pitassa is an as-yet undiscovered frontier city in western Anatolia

Anatolia

Anatolia is a geographic and historical term denoting the westernmost protrusion of Asia, comprising the majority of the Republic of Turkey...

, mentioned in Bronze Age

Bronze Age

The Bronze Age is a period characterized by the use of copper and its alloy bronze as the chief hard materials in the manufacture of some implements and weapons. Chronologically, it stands between the Stone Age and Iron Age...

 archives at Hattusa

Hattusa

Hattusa was the capital of the Hittite Empire in the late Bronze Age. It was located near modern Boğazkale, Turkey, within the great loop of the Kızıl River ....

. Its name seems Luwian

Luwian language

Luwian is an extinct language of the Anatolian branch of the Indo-European language family. Luwian is closely related to Hittite, and was among the languages spoken during the second and first millennia BC by population groups in central and western Anatolia and northern Syria...

, and it occasionally formed the border between Hatti and various iterations of Arzawa

Arzawa

Arzawa in the second half of the second millennium BC was the name of a region and a political entity in Western Anatolia, the core area of which was centered on the Hermos and Maeander river valleys, corresponding with the Late Bronze Age kingdoms of the...

.

Madduwatta wrested Pitassa from Arnuwanda I

Arnuwanda I

Arnuwanda I was a king of the Hittite empire. He became a ruler by marriage and was very religious.- Biography :Arnuwanda became a king by marriage. His wife was Ašmu-nikal, daughter of king Tudhaliya I. He became a successor of Tudhaliya as his son-in-law. He began his reign under a co-regency...

 in the late 15th century BC. Decades later Suppiluliuma I

Suppiluliuma I

Suppiluliuma I was king of the Hittites . He achieved fame as a great warrior and statesman, successfully challenging the then-dominant Egyptian empire for control of the lands between the Mediterranean and the Euphrates....

 retook it. Mashuiluwa of Mira then incited it to revolt c. 1310 BC, after which Mursili II

Mursili II

Mursili II was a king of the Hittite Empire ca. 1321–1295 BC .-Family:Mursili II was the younger son of Suppiluliuma I, one of the most powerful rulers of the Hittite Empire...

moved upon it and resubjigated it.

This may be the city of Abydos on the Hellespont.