SM(4) BSD Kernel Interfaces Manual SM(4)
sm -- SMC91C9x and SMC91C1xx-based 10/100 Ethernet device
sm0 at isa? port 0x300 irq 10
sm* at pcmcia?
nsphy* at mii?
The sm device driver supports SMC91C9x and SMC91C1xx-based Ethernet
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.
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
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).
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.
arp(4), ifmedia(4), intro(4), isa(4), netintro(4), nsphy(4), pcmcia(4),
BSD March 30, 2017 BSD