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SM(4)                    BSD Kernel Interfaces Manual                    SM(4)

NAME
     sm -- SMC91C9x and SMC91C1xx-based 10/100 Ethernet device

SYNOPSIS
     sm0 at isa? port 0x300 irq 10
     sm* at pcmcia?
     nsphy* at mii?

DESCRIPTION
     The sm device driver supports SMC91C9x and SMC91C1xx-based Ethernet
     interfaces.

     The ISA attachment of the sm driver supports any SMC91C9x-based Ethernet
     interface on the ISA bus, including the EFA Info*Express SVC VLB inter-
     face, and the on-board SMC91C9x Ethernet found in many embedded PCs and
     laptop docking stations.

     The PCMCIA attachment of the sm driver supports Megahertz X-JACK Ethernet
     cards, NewMedia BASICS Ethernet cards, and SMC EtherEZ 8020 series cards.

MEDIA SELECTION
     The SMC91C1xx supports the following media types:

     autoselect   Enable autoselection of the media type and options.  The
                  user can manually override the autoselected mode by adding
                  media options to the appropriate hostname.if(5) file.

     10baseT      Set 10Mbps operation.  The mediaopt option can also be used
                  to select either full-duplex or half-duplex modes.

     100baseTX    Set 100Mbps (Fast Ethernet) operation.  The mediaopt option
                  can also be used to select either full-duplex or half-duplex
                  modes.

     The SMC91C9x supports AUI and UTP media types:

     To enable the AUI media, select the 10base5 or aui media type with
     ifconfig(8)'s 'media' directive.  To select UTP, select the 10baseT or
     utp media type.

     For more information on configuring this device, see ifconfig(8).

DIAGNOSTICS
     sm0: unable to read MAC address from CIS  This indicates that the Ether-
     net address, which is stored in the CIS information on the Megahertz X-
     JACK PCMCIA Ethernet card, is corrupted.

SEE ALSO
     arp(4), ifmedia(4), intro(4), isa(4), netintro(4), nsphy(4), pcmcia(4),
     hostname.if(5), ifconfig(8)

BSD                             March 30, 2017                             BSD