Al Kossow wrote: > > For the 7970 tape drive there ARE the full schematics on bitsavers... > > the 7970 series was built by HP, the 7879 is was OEM-ed from STC . Are you sure? The 7976 was an STC drive, brought in because HP didn't have a 6250 BPI drive and this was starting to hurt sales by 1983 or so. I understood the 7978 to be HP's design. -Frank McConnell