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45 .Nd Netwave AirSurfer wireless network driver
51 interface provides access to a theoretical 1 Mb/s wireless Ethernet network
52 based on the Netwave AirSurfer Wireless LAN (formerly known as the Xircom
53 Netwave Wireless LAN).
55 Note that the driver does not support newer devices
56 such as the Netwave AirSurfer
58 or the BayStack 650/660.
59 These devices are supported by the
63 Netwave devices are not compatible with IEEE 802.11 wireless networks.
64 Also note that there are Netwave devices with different wireless frequency,
65 depending on the radio band plan in each country.
67 The card uses 36K of I/O memory mapped to the card.
68 .\"The card uses 32K of I/O memory mapped to the card along with either 16 I/O ports
69 .\"or 4K of additional I/O memory for access to command registers.
70 .\"The driver currently only supports the use of the additional 4K of I/O memory.
71 You may need to increase memory space available to the PC Card controller.
76 In use, the cards appear to achieve up to a 420Kb/s transfer rate, though
77 a transfer rate between 250Kb/s and 350Kb/s is typical.
79 The card operates in the 2.4GHz frequency range and is subject to interference
80 from microwaves, IEEE 802.11 wireless network devices, as well as earth.
81 For example, it seems that IEEE 802.11 channel 14 conflicts with Netwave
83 They interfere with each other if they are both operated
84 in the same geographic region, causing weird packet loss.
85 You may be able to avoid the interference with IEEE 802.11 devices,
86 by changing the IEEE 802.11 channel.
88 Cards supported by the
94 Xircom CreditCard Netwave
100 .It "cnw0: can't map memory"
101 Indicates that the driver was not able to allocate enough PC Card bus
102 address space into which to map the device.
105 and increase memory available to the PC Card controller.
116 driver was ported from
120 .An Hiroyuki Aizu Aq aizu@jaist.ac.jp .
125 release to include it was
127 This manual page was adopted from
130 .An Christian Brueffer Aq brueffer@FreeBSD.org .