There may not be left of that particular unit, but the IBM 3740 series (of which the 3742 is a variant) lives on today in every PC clone. In particular, every PC-clone uses a floppy disk format that's a very direct descendant of the IBM 3740 format. Change the modulation from FM to MFM, up the data rate, and that's all. And at least some of the PC FDC's will read a IBM 3740 format floppy (see the discussions from the past few years in comp.os.cpm about single-density capable FDC's). -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927