This is a driver for SMC's 9000 series of Ethernet adapters
suitable for use with FreeBSD 2.1

It was written by:

  Gardner Buchanan
  SHL Systemhouse Inc.
  Suite 501, 50 O'Connor St.
  Ottawa Ontario, Canada
  K1H 7C7

  (613) 236-6604 x5375

This software is Copyright (C) 1996 by Gardner Buchanan.
This FreeBSD driver is derived in part from the smc9194 Linux driver
by Erik Stahlman and is therefore Copyright (C) 1996 by Erik Stahlman.
This software also shamelessly borrows from the FreeBSD ep driver
which is Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
All rights reserved.

NOTE: Though I gave credit where it is due, please do not expect
      any of the contributors other than me (Gardner Buchanan,
      gbuchanan@shl.com) to be of any help with this driver.
      If you have questions or comments, please send them to
      me.

The driver is set up for my SMC91C92 equipped Ampro LittleBoard embedded
PC.  It is adapted from Erik Stahlman's Linux driver which worked
with his EFA Info*Express SVC VLB adaptor.  According to SMC's databook,
it will work for the entire SMC 9xxx series. (Ha Ha)

Authors:
     Erik Stahlman          erik@vt.edu
     Herb Peyerl            hpeyerl@novatel.ca
     Andres Vega Garcia     avega@sophia.inria.fr
     Serge Babkin           babkin@hq.icb.chel.su
     Gardner Buchanan       gbuchanan@shl.com

Sources:
   o   SMC databook
   o   "smc9194.c:v0.10(FIXED) 02/15/96 by Erik Stahlman (erik@vt.edu)"
   o   "if_ep.c,v 1.19 1995/01/24 20:53:45 davidg Exp"

Known bugs:
   (1)  The hardware multicast filter isn't used yet.
   (2)  Setting of the hardware address isn't supported.
   (3)  Hardware padding isn't used.
   (4)  The statistics are probably not recorded properly.

History:
   02/15/96  Erik Stahlman     smc9194.c:v0.10(FIXED) 02/15/96
   03/01/96  Gardner Buchanan  port to FreeBSD
   03/15/96  Gardner Buchanan  Finally works

Installation and Use:

   You will need to add these files to your kernel source directory,
   edit the files.i386 file, configure a new kernel and build it.
   In detail:

   1 - Put the two file if_sn.c and if_snreg.h in /usr/src/sys/i386/isa
       (in the same directory as the other isa ethernet drivers, like
       if_ep.c etc.)

   2 - Edit the file /usr/src/sys/i386/conf/files.i386 and stick in a line
       like this one near the other isa network interfaces:

         i386/isa/if_sn.c         optional      sn     device-driver      

       It put mine just uner the ep_if.c line and built it by copying
       and editing that entry.

   3 - Edit a kernel configuration file and put in a line like this:

        device sn0 at isa? port 0x300 net irq 10 vector snintr

       You will have to put in the correct IRQ and port addresses since
       the probe will not find the card if they are left out.  There are
       dependencies among the probing orders of various Ethernet adapters.
       I have not figured out whether this matters for the SMC91Cxx.

   4 - Configure and build the kernel, boot from it and watch for fireworks.
       I recommend booting in single user mode to try out the driver.
       You can ifconfig it by hand and test things out.  If it panics,
       your disks are safely read-only.

       The interface is sn0.  I have never attempted to configure more
       than one unit, but the code should handle it just fine.

Good luck, and have fun.