PCN(4) | Device Drivers 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:

- Am79c970 PCnet-PCI Single-Chip Ethernet Controller for PCI Local Bus
- Am79c970A PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus
- Am79c971 PCnet-FAST Single-Chip Full-Duplex 10/100Mbps Ethernet Controller for PCI Local Bus
- Am79c972 PCnet-FAST+ Enhanced 10/100Mbps PCI Ethernet Controller with OnNow Support
- 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>.

July 16, 2013 | Debian