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TL(4)                     NetBSD Programmer's Manual                     TL(4)


NAME

     tl - Ethernet driver for Texas Instruments ThunderLAN based board


SYNOPSIS

     tl* at pci? dev ? function ?
     tlphy* at mii?
     nsphy* at mii?


DESCRIPTION

     The tl device driver supports network adapters based on the Texas Instru-
     ments ThunderLAN chip on i386 CPUs.  Supported cards include:

           Compaq Netelligent
                   in baseboard and PCI variants (10bT-only and dual-port
                   variants untested).

           Compaq NetFlex 3/P
                   in baseboard variant only (the PCI variant doesn't use the
                   same chip !).

           Baseboard Compaq Deskpro 4000 5233MMX ethernet (untested).

           TI TravelMate 5000 series laptop docking station's ethernet board.


MEDIA SELECTION

     The different models of the supported boards come with some subset of
     RJ-45, BNC and AUI connectors.   Supported media include:

           AUI/DIX     Standard 15 pin connector

           10Base2     BNC, also known as thin-net

           10BaseT     UTP, also known as twisted pair

           100baseTX   100Mbit over cat-5 UTP

     The tl driver don't have automatic media selection, and there is no media
     selected by default. An explicit medium must be specified to ifconfig(8)
     or in your /etc/ifconfig.tl? file. The media option full-duplex can be
     used to switch the UTP port in full-duplex mode.


DIAGNOSTICS

           tl0: no carrier
           nsphy0: 10baseT: no carrier
         means that the driver detected a carrier loss. This usually indicates
         a bad link.


BUGS

     The board marked as untested will always claim having an AUI connector,
     where it may be a BNC one.

     The driver really should have a media autosensing function.

     On AUI and BNC ports, false carrier loss may be detected on heavily-load-
     ed networks.


SEE ALSO

     ifconfig(8), intro(4), pci(4)

NetBSD 1.4                     October 17, 1997                              1