This is a complete ground up redesign of the Atari 8-Bit Computer Motherboard still utilizing the standard Atari VLSI chips, but recreated in a Mini-ITX Form Factor (17 cm x 17 cm). The idea behind this project was to take several devices I had been working on (i.e., TK-II, MouseTari, and VGATE), along with the U1MB and UAV upgrades by Lotharek and AtariAge member Bryan, and integrate them into a cohesive package that would fit a plethora of readily available Mini-ITX enclosures.
 
General Build Information
Boot-up Screen
  
This project is now considered fully released, and all of the pertinent files to get started with a DIY build are now available from this page. Please be sure to use the sub-page links to see some of the additional accessory items that can be built to expand upon the basic system, such as the internal Compact Flash Drive (XEL-CF3).

AtariAge member MacRorie is selling individual bare boards, parts kits, fully assembled boards, and full systems at The Brewing Academy website. I won't be too involved with this aspect, so please direct any questions you may have about this to MacRorie.

​Thanks to AtariAge member  flashjazzcat, there is a new build of the U1MB BIOS specific to the 1088XEL. I recommend that this be flashed to the 1088XEL's U1MB in order to enjoy the full experience (Firmware). ​

Last but not least when it comes to DIY, please keep in mind that there are numerous variables that could easily factor into whether your board works or not on first boot. Anything ranging from a missed solder joint, solder bridge, or a bad or marginal chip can totally derail operation of the board.  So bearing that in mind, remember that this is one of those "enter at your own risk" kind of projects, requiring a high proficiency in electronic soldering, assembly and troubleshooting.