The Atari 800XL is an enhanced version of the existing ATARI Computer Systems. It can be used with any of the existing Atari peripheral devices used with the 400/600XL/800/1200XL Computers.

The printed circuit board contains 64K of RAM, an operating systems that contains ore 16K X 8 ROM and an on-board Atari BASIC programming language I.C. The console contains the keyboard and four function keys (including a HELP key), plus a RESET key, a detachable (RF) TV interface cable, connector jack for daisy-chaining peripherals and connecting hand controllers, a single cartridge slot, ore status LED (POWER), a 5 pin DIN Monitor Jack, and a parallel bus interface (PBI).