Atari XEGS © 1987 Atari Corp.
The Atari XE Game System (Atari XEGS) is a home video game console based on the Atari 65XE computer. The XEGS is compatible with the existing Atari 8-bit computer software library. The XEGS shipped with the Atari 8-bit version of Missile Command built in.
Machine's bios.