The American Basketball Association (ABA) was a professional basketball league founded in 1967. The ABA ceased to exist after merging with the National Basketball Association (NBA) in 1976. In total, the league held nine all-star games, with all but the last being between the Western Division and the Eastern Division. In the final one, it was held between the first place team at the time of the All-Star break face off against a selected group of All-Stars, regardless of conference.
References
ABA All-Star Game Wikipedia(Text) CC BY-SA