After much trial and error (well, mostly error...) I found that the DWL650 works
with the standard wvlan_cs driver, with the following caveats:

* kernel 2.2.18 (2.2.19 also known to work, others may work also),
  pcmcia-cs-3.1.26 ( .27 doesn't compile, and the 2.4 kernel-pcmcia drivers
don't seem to work
   for this card)

* The wvlan_cs driver complains that "it is not a Wavelan/ieee card". Ignore
this, the
   card runs at 11Mb with the standard wvlan_cs driver anyway.

* For use in 802.11 Ad-Hoc mode, you should put "allow_ibss=1" into the options
  section in /etc/pcmcia/config.opts for the wvan_cs driver. After I did this
the card happily talks to
  my 2 Lucent/Orinoco cards.

* I had to put

        PCIC_OPTS="irq_mode=0"

  into /etc/sysconfig/pcmcia. This is because I am using a PCI adapter card in
my desktop
  machine.

* Don't bother with the wlan-ng driver.

my $0.02

cheers, Anthony

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