TXP(4)                    OpenBSD Programmer's Manual                   TXP(4)

NAME
     txp - 3Com 3XP Typhoon/Sidewinder (3CR990) 10/100 Ethernet device

SYNOPSIS
     txp* at pci?

DESCRIPTION
     The txp driver provides support for the 3Com Typhoon/Sidewinder Fast Eth-
     ernet chipset, including the following:

           o   3Com 3CR990-TX-95
           o   3Com 3CR990-TX-97
           o   3Com 3CR990SVR95
           o   3Com 3CR990SVR97

     The txp driver supports IPv4 receive IP/TCP/UDP checksum offload, IPv4
     transmit IP checksum offload, and VLAN tag insertion and stripping.

     The txp driver 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 ifconfig(8) mediaopt option can al-
                so be used to select either full-duplex or half-duplex modes.

     100baseTX  Set 100Mbps (Fast Ethernet) operation.  The ifconfig(8)
                mediaopt option can also be used to select either full-duplex
                or half-duplex modes.

     The txp driver supports the following media options:

     full-duplex  Force full duplex operation.

     half-duplex  Force half duplex operation.

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

FILES
     The driver needs a firmware file, which is loaded on demand when the de-
     vice is attached:

           /etc/firmware/3c990

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

HISTORY
     The txp driver first appeared in OpenBSD 2.9.

OpenBSD 4.7                    October 28, 2008                              1
