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NetBSD 6.1.5 - man page for cnw (netbsd section 4)

CNW(4)				   BSD Kernel Interfaces Manual 			   CNW(4)

NAME
     cnw -- Netwave AirSurfer wireless network driver

SYNOPSIS
     cnw*     at pcmcia? function ?

DESCRIPTION
     The cnw interface provides access to a theoretical 1 Mb/s wireless Ethernet network based on
     the Netwave AirSurfer Wireless LAN (formerly known as the Xircom Netwave Wireless LAN).

     Note that the driver does not support newer devices such as the Netwave AirSurfer ``Plus'',
     or the BayStack 650/660.  These devices are supported by the awi(4) driver.

     Netwave devices are not compatible with IEEE 802.11 wireless networks.  Also note that there
     are Netwave devices with different wireless frequency, depending on the radio band plan in
     each country.

     The card uses 36K of I/O memory mapped to the card.  You may need to increase memory space
     available to the PCMCIA controller.  See pcmcia(4) for details.

     In use, the cards appear to achieve up to a 420Kb/s transfer rate, though a transfer rate
     between 250Kb/s and 350Kb/s is typical.

     The card operates in the 2.4GHz frequency range and is subject to interference from
     microwaves, IEEE 802.11 wireless network devices, as well as earth.  For example, it seems
     that IEEE 802.11 channel 14 conflicts with Netwave (US frequency).  They interfere with each
     other if they are both operated in the same geographic region, causing weird packet loss.
     You may be able to avoid the interference with IEEE 802.11 devices, by changing the IEEE
     802.11 channel.

HARDWARE
     Cards supported by the cnw driver include:

	   Xircom CreditCard Netwave

	   NetWave AirSurfer

DIAGNOSTICS
     cnw0: can't map memory  Indicates that the driver was not able to allocate enough PCMCIA bus
     address space into which to map the device.  See pcmcia(4) and increase memory available to
     the PCMCIA controller.

SEE ALSO
     arp(4), awi(4), inet(4), intro(4), pcmcia(4), cnwctl(8)

BSD					 January 5, 1997				      BSD


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