My version of XF551 modded for 3.5" floppy.
Track display by Mq: http://www.atari.org.pl/forum/viewtopic.php?id=16023
Some other materials here: http://blog.3b2.sk/igi/post/ATARI-XF551-3xOSin1Eprom-1_2.aspx
(local mirror: ATARI_XF551.pdf)
and here: http://blog.3b2.sk/igi/post/Hyper2b-XF-10-MANUAL.aspx
(local mirror: HyperXF.pdf    HYPROMA.rom    HYPROMB.rom)





Formatting under SpartaDOS X: