| CAS(4) | Device Drivers Manual | CAS(4) | 
cas —
cas* at pci? dev ? function ?
Configuration of PHYs may also be necessary. See mii(4).
cas driver provides support for the Sun Cassini and
  Cassini+ (GigaSwift) and the National Semiconductor Saturn Ethernet hardware
  found in Sun UltraSPARC machines and Sun GigaSwift PCI cards.
Cards supported by this driver include:
Sun Microsystems, Cassini+ ASIC Specification, http://www.sun.com/processors/manuals/cs_plus.pdf.
cas driver first appeared in
  OpenBSD 4.1. NetBSD support
  was added in NetBSD 6.0.
cas driver was written for
  OpenBSD by Mark Kettenis
  ⟨kettenis@openbsd.org⟩, based on the
  gem(4) driver, and ported to
  NetBSD by Julian Coleman
  ⟨jdc@NetBSD.org⟩.
cas driver does not support any of the advanced
  features of the Cassini chip.
On the SX fibre variants of the hardware, the link may stay down
    if media options apart from autoselect are
  chosen.
| December 25, 2019 | NetBSD 9.4 |