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CAS(4)                   BSD Kernel Interfaces Manual                   CAS(4)

NAME
     cas -- Sun Cassini 10/100/Gigabit Ethernet device

SYNOPSIS
     cas* at pci?
     brgphy* at mii?
     gentbi* at mii?
     nsgphy* at mii?

DESCRIPTION
     The cas driver provides support for various NICs based on the Sun
     Cassini/Cassini+ and National Semiconductor Saturn Ethernet controller
     chips, including the following:

           o   Sun GigaSwift Ethernet Adapter (10/100/1000baseT)
           o   Sun GigaSwift Ethernet MMF Adapter (1000baseSX)
           o   Sun Quad GigaSwift Ethernet UTP Adapter (10/100/1000baseT)
           o   Sun Quad GigaSwift PCI-X Adapter (10/100/1000baseT)
           o   Sun Dual Gigabit Ethernet and Dual SCSI/P Adapter
               (10/100/1000baseT)

     It uses an internal or external PHY or an external 10-bit interface.

     The cas driver supports several media types, which are selected via the
     ifconfig(8) command.  The supported media types are:

           media autoselect
                  Attempt to autoselect the media type (default)

           media 1000baseT mediaopt full-duplex
                  Use 1000baseT on copper, full duplex

           media 1000baseT [mediaopt half-duplex]
                  Use 1000baseT on copper, half duplex

           media 1000baseSX mediaopt full-duplex
                  Use 1000baseSX on fiber, full duplex

           media 1000baseSX [mediaopt half-duplex]
                  Use 1000baseSX on fiber, half duplex

           media 100baseTX mediaopt full-duplex
                  Use 100baseTX, full duplex

           media 100baseTX [mediaopt half-duplex]
                  Use 100baseTX, half duplex

           media 10baseT mediaopt full-duplex
                  Use 10baseT, full duplex

           media 10baseT [mediaopt half-duplex]
                  Use 10baseT, half duplex

SEE ALSO
     arp(4), brgphy(4), gentbi(4), ifmedia(4), inet(4), intro(4), netintro(4),
     nsgphy(4), hostname.if(5), ifconfig(8)

HISTORY
     OpenBSD support for cas first appeared in OpenBSD 4.1.

AUTHORS
     The cas driver was written by Mark Kettenis <kettenis@openbsd.org> based
     on the gem(4) driver.

BUGS
     The cas driver does not yet use many of the advanced features the Cassini
     chip offers.

BSD                              July 16, 2013                             BSD