xsurf —
Individual Computers X-Surf driver
xsurf* at zbus0
ne* at xsurfbus?
gencp* at xsurfbus?
wdc* at xsurfbus?
The xsurf driver provides support for ethernet, IDE
  controller and clockports present on the Individual Computers X-Surf card.
The xsurf driver supports the following hardware:
  - Individual Computers X-Surf
-  
- E3B Deneb (fake X-Surf board, firmware v11, clockport only)
-  
 
The xsurf device first appeared in
  NetBSD 7.0.
The xsurf driver was written by
  Radoslaw Kujawa
  ⟨radoslaw.kujawa@gmail.com⟩. The
  ne(4) attachment code was split
  from Ariadne II driver, written by Bernd Ernesti and extended by Ignatios
  Souvatzis. IDE controller support was added by Radoslaw Kujawa and Frank
  Wille.
Support for clockports remains largely untested.
The X-Surf IDE controller timings are not configurable and are known to be
  incompatible with many hard disks (especially on the early X-Surf revisions).
  This is purely a hardware problem.