ALTOS The one I had was given to me by Helmut Jungkunz and you will see a Altos 580 at www.gaby.de The 580 systems use a large custom single board computer, with the drive controller being a separate half card mounted on top of the SBC. It has a 5''1/4 disk-drive built-in the right part of the front panel, and a 5''1/4 hard-disk on the left part. The 580-2 had two 5''1/4 disk-drives built-in instead of just one. Links: http://www.hchistory.de/hc_show_comp.php3?suche=altos580