1.\" $NetBSD: cnw.4,v 1.12 2001/09/12 18:19:17 wiz Exp $ 2.\" 3.\" Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that this notice is retained, 7.\" the conditions in the following notices are met, and terms applying 8.\" to contributors in the following notices also apply to Berkeley 9.\" Software Design, Inc. 10.\" 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. All advertising materials mentioning features or use of this software 17.\" must display the following acknowledgement: 18.\" This product includes software developed by 19.\" Berkeley Software Design, Inc. 20.\" 4. Neither the name of the Berkeley Software Design, Inc. nor the names 21.\" of its contributors may be used to endorse or promote products derived 22.\" from this software without specific prior written permission. 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND 25.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27.\" ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE 28.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" PAO2 Id: cnw.4,v 1.1.1.1 1997/12/11 14:46:23 itojun Exp 37.\" 38.Dd January 5, 1997 39.Dt CNW 4 40.Os 41.Sh NAME 42.Nm cnw 43.Nd 44.Tn Netwave AirSurfer Wireless network driver 45.Sh SYNOPSIS 46.Cd "cnw* at pcmcia? function ?" 47.Sh DESCRIPTION 48The 49.Nm cnw 50interface provides access to a theoretical 1 Mb/s wireless Ethernet network 51based on the Netwave AirSurfer Wireless LAN (formerly known as the Xircom 52Netwave Wireless LAN). 53.Pp 54Note that the driver does not support newer devices 55such as the Netwave AirSurfer 56.Dq Plus , 57or the BayStack 650/660. 58These devices are supported by the 59.Xr awi 4 60driver. 61.Pp 62Netwave devices are not compatible with IEEE 802.11 wireless network. 63Also note that there are Netwave devices with different wireless frequency, 64depending on radio band plan in each countries. 65.Pp 66The card uses 36K of I/O memory mapped to the card. 67.\"The card uses 32K of I/O memory mapped to the card along with either 16 I/O ports 68.\"or 4K of additional I/O memory for access to command registers. 69.\"The driver currently only supports the use of the additional 4K of I/O memory. 70You may need to increase memory space available to the PCMCIA controller. 71See 72.Xr pcmcia 4 73for details. 74.Pp 75In use, the cards appear to achieve up to a 420Kb/s transfer rate, though 76a transfer rate between 250Kb/s and 350Kb/s is typical. 77.Pp 78The card operates in the 2.4GHz frequency range and is subject to interference 79from microwaves, IEEE 802.11 wireless network devices, as well as earth. 80For example, it seems that IEEE 802.11 channel 14 conflicts with Netwave 81.Pq US frequency . 82They interfere each other if we operate both of them 83in the same geographic region, causing weird packet loss. 84You may be able to avoid the interference with IEEE 802.11 devices, 85by changing IEEE 802.11 channel. 86.Sh HARDWARE 87Cards supported by the 88.Nm 89driver include: 90.Pp 91.Bl -item -offset indent 92.It 93Xircom CreditCard Netwave 94.It 95NetWave AirSurfer 96.El 97.Sh DIAGNOSTICS 98.Bl -diag 99.It "cnw0: can't map memory" 100Indicates that the driver was not able to allocate enough PCMCIA bus 101address space into which to map the device. 102See 103.Xr pcmcia 4 104and increase memory available to the PCMCIA controller. 105.El 106.Sh SEE ALSO 107.Xr arp 4 , 108.Xr awi 4 , 109.Xr inet 4 , 110.Xr intro 4 , 111.Xr pcmcia 4 , 112.Xr cnwctl 8 113