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PCN(4)                   BSD Kernel Interfaces Manual                   PCN(4)

NAME
     pcn -- AMD PCnet-PCI 10/100 Ethernet device

SYNOPSIS
     pcn* at pci?
     acphy* at mii?
     amphy* at mii?
     lxtphy* at mii?
     nsphy* at mii?

DESCRIPTION
     The pcn device driver supports Ethernet interfaces based on the AMD
     PCnet-PCI family of Ethernet chips.  The chips supported by the pcn
     driver include:

     o   Am79c970 PCnet-PCI Single-Chip Ethernet Controller for PCI Local Bus

     o   Am79c970A PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller
         for PCI Local Bus

     o   Am79c971 PCnet-FAST Single-Chip Full-Duplex 10/100Mbps Ethernet Con-
         troller for PCI Local Bus

     o   Am79c972 PCnet-FAST+ Enhanced 10/100Mbps PCI Ethernet Controller with
         OnNow Support

     o   Am79c973/Am79c975 PCnet-FAST III Single-Chip 10/100Mbps PCI Ethernet
         Controller with Integrated PHY

     PCnet-PCI chips are found on some Hewlett-Packard PCI Ethernet boards,
     and on the Allied Telesyn AT-2700TX PCI Ethernet board.  They are also
     found on some processor evaluation boards as an example peripheral.

     The pcn driver also supports the emulated PCnet-PCI interface provided by
     VMware.

SEE ALSO
     acphy(4), amphy(4), arp(4), ifmedia(4), lxtphy(4), mii(4), netintro(4),
     nsphy(4), pci(4), ifconfig(8)

HISTORY
     The pcn driver first appeared in NetBSD 1.6.  OpenBSD support was added
     in OpenBSD 3.8.

AUTHORS
     The pcn driver was written by Jason R. Thorpe <thorpej@wasabisystems.com>
     and ported to OpenBSD by Brad Smith <brad@openbsd.org>.

BSD                             April 30, 2017                             BSD