One of the oldest drivers I've run across was originally written for
the Lucent Wavelan card. Lucky for us, over time, support was added
for several other cards, including several using the HFA3842.

Here is the link to the main driver code:

http://fxr.watson.org/fxr/source/dev/wi/if_wi.c

Here is a great list of the Prism registers with "friendly" names:

http://fxr.watson.org/fxr/source/dev/wi/if_wireg.h

Here we see clearly the BAP, the Command and Event/Status registers,
setting SSID, getting the MAC address, and much much more.

Notice the copyright dates of 1997, 1998, and 1999. And it is still
available on the web. So I'd say that is publicly available
information.

The next driver is the "orinoco" driver for Linux, dating back to
1999, but still in use today by some folks with Prism cards. You can
find it here:

http://lxr.linux.no/source/drivers/net/wireless/orinoco.c

There is a *ton* of good information in this driver, but one thing
jumps out at me-- the extensive list and usage of "RID", for setting
SSID, getting the MAC address, etc.

You can see that RID and FID both make use of the BAP "knothole"
technique.

Another popular driver is here:

http://www.linux-wlan.org/

And I guess my favorite is here:

http://hostap.epitest.fi/

Well, it seems to me, that if the register or method or data item is
made use of in any of the drivers listed above, it is "public
information", and we should be able to use the same information in our
drivers as well.

Let me know what you think. I hope to provide small example programs
that "showcase" different aspects of the prism chipset, using
"friendly" register names, etc.

William