Hi, 
 
I made some changs for the 3c509: 
 
- You can now use ifconfig ep0 media [bnc|aui|utp] to switch to another
  media port on the 3c509.
- The ISA driver no longer attaches a 3c509 in PnP mode, so you can now
  have the isa and the isapnp driver in your kernel without getting 
  duplicated attachments. 
  But don't use the PnP mode now, there is at the moment a problem 
  that the isapnp driver doesn't keep track of allready used irq's for
  other ISA devices.
  
Bernd