The code name
of the DEC 10/100 ethernet
chip, the DS2114x. Donald Becker
uses these things almost exclusively in their Beowulf
Update: Intel purchased the DEC semiconductor line, so now Tulip chips are being made by Intel. Lite-On also makes a clone, and PNIC and NetGear relabel them. Also, Donald Becker is no longer working at NASA, and so is hosting all his Linux device drivers at his Scyld.com site.