The Atari 1090 XL Expansion System was slated to be shipped along
with several Atari produced
Expansion cards that Atari XL home
computer users could purchase to install and expand their
computer systems with by installing
them into the 1090 XL Expansion box. Here are several of the
CP/M Expansion Card
Atari 80 Column Video Card
Atari Serial/Parallel Card
Atari Prototyping/Hobbyist Card
Atari BSR/RTC X10
Are you a former Atari engineer?
Did you work on the 1090 or have direct knowledge of this project?
Please contact the Atari Museum: