Feel free to tell me if I'm smoking too much crack....

I'm in the early phases of developing a driver for the Dallas
Semiconductor 1-Wire bus system.  The bus controller plugs into the serial
port on a machine and then control & data messages are sent to the
controller.

For the moment, I'm trying to get the controller to attach as "onewire* at
com?" on my Alpha.  I have some basic _match and _attach functions that do
nothing but printf() and return.  The printfs never showed up in the dmesg
output until I experimented around a bit & set the drivers to attach at
isa?, then the showed up.

The main question I have...is the "com" device (and other serial
interface devices) attachable to?  Or is there a better way of doing this?