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VX(4)		     FreeBSD/i386 Kernel Interfaces Manual		 VX(4)

NAME
     vx	-- PCI Ethernet	device driver

SYNOPSIS
     device vx

DESCRIPTION
     The vx driver provides support for	the 3Com 3c590 and 3c595 EtherLink III
     and Fast EtherLink	III PCI	Ethernet cards in 10 Mbps mode.	 The medium
     selection can be influenced by the	following link flags to	the
     ifconfig(8) command:

     link0   Use the AUI port.
     link1   Use the BNC port.
     link2   Use the UTP port.

DIAGNOSTICS
     vx%d: not configured; kernel is built for only %d devices.	 There are not
     enough devices in the kernel configuration	file for the number of
     adapters present in the system.  Add devices to the configuration file,
     rebuild the kernel, and reboot.

     All other diagnostics indicate either a hardware problem or a bug in the
     driver.

CAVEATS
     Some early-revision 3c590 cards are defective and suffer from many
     receive overruns, which cause lost	packets.  The author has attempted to
     implement a test for it based on the information supplied by 3Com,	but
     the test resulted mostly in spurious warnings.

     The performance of	this driver is somewhat	limited	by the fact that it
     uses only polled-mode I/O and does	not make use of	the bus-mastering
     capability	of the cards.

BUGS
     The vx driver is known not	to reset the adapter correctly following a
     warm boot on some systems.

     The vx driver has not been	exhaustively tested with all the models	of
     cards that	it claims to support.

SEE ALSO
     arp(4), netintro(4), ng_ether(4), ifconfig(8)

HISTORY
     The vx device driver first	appeared in FreeBSD 2.1.  It was derived from
     the ep driver, from which it inherits most	of its limitations.

AUTHORS
     The vx device driver and this manual page were written by Fred Gray
     <fgray@rice.edu>, based on	the work of Herb Peyerl	and with the assis-
     tance of numerous others.

FreeBSD	10.1		       January 15, 1996			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | DIAGNOSTICS | CAVEATS | BUGS | SEE ALSO | HISTORY | AUTHORS

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