In a message dated 1/21/99 1:23:18 PM EST, jpero(a)cgocable.net writes:
  I just finally got around to borrow a TTL monitor and
tried out the RT
  6151.  It did boot off the disk but one thing I have problem with this
  is rapidly blinking "99" even the keyboard lock is in unlocked
  position.  That happened when booting off the diskette I have here.
  Checked the microswitch all the way to the motherboard connector
   end.  It's ok!
  Thanks! 
somewhere in command central i have a list of all the checkpoint codes for the
RT but i cannot find it right now. 99 means missing boot files IIRC.
david