

manual:
http://atarionline.pl/forum/comments.php?DiscussionID=4245&page=1#Item_0


CreaXin1
http://raster.infos.cz/atari/hw/ramcart/ramcart.htm
http://raster.infos.cz/atari/forpc/creaxin1en.htm


Eagle (for board scheme)
https://www.autodesk.com/products/eagle/free-download

