Released in 1983 as a replacement for the 400, the 600XL is the low-end
version of the 800XL. The 600XL/800XL include most of the features of the
1200XL minus the Function keys and the demo program. But both the 800XL and
600XL have the Atari BASIC language built-in. In addition, these two systems
offer the Parallel Bus Interface (PBI), providing fast parallel access to the
heart of the computer. The 600XL has 16K RAM.
The 600XL can be expanded from 16K to 64K with the Atari 1064 Memory Module.
Rarely, some late-model 600XLs were sold with 64K RAM. These may have only
appeared in Canada. The box had a round gold foil sticker reading: "64k
Memory -- Now with a full 64k of memory built-in."
Normally boots with Atari BASIC (Revision B) enabled; Hold down [Option] on
startup to boot without BASIC.
The North American/NTSC 600XL does not include a composite monitor port; the
European/PAL 600XL includes the monitor port, but this lacks the chroma video
The 600XL was discontinued in 1984.