Proper noun
ATASCII
(computing, historical) An ASCII-based character set used in the Atari 8-bit family of home computers of the 1980s.
As with the Atari's ATASCII art, C-64 fans developed a similar scene that used PETSCII for their creations. Source: Internet
ATASCII text animations are also referred to as "break animations" by the Atari sceners. Source: Internet