  This is a SVR4 version of my MPU401 driver.  This driver is based
on the BSD386 driver, but with many changes.
  I used to have access to a machine running ESIX at work, and
at one point this driver would compile, but numerous changes have
been made since I've lost access to this machine.  So all I can
really say, is it is probably fairly close to compling.
  I'm definitely interesting in finding people to test it and debug
it.  Please take a look the the PROBLEMS file and see if you can help
me get this driver working.
  I'm not positive about the install proceedure, but we'll give it
a try.

  + edit the System file.  There should be a line for each
MPU401 device.  See sdevice(4) for format information.  The MPU401s
only use two IO ports, so the 8th field should be 1 greater than
the 7th.

  + make and make install

  + Now just shutdown and reboot
