The NBA Slam Dunk Contest is an annual National Basketball Association (NBA) competition held during the NBA All-Star Weekend. The contest was inaugurated by the American Basketball Association (ABA) at its All-Star Game in 1976 in Denver, the same year the slam dunk was legalized in the NCAA. As a result of the ABA–NBA merger later that year there would not be another slam dunk contest at the professional level until 1984. The contest has adopted several formats over the years, including, until 2014, the use of fan voting, via text-messaging, to determine the winner of the final round.