UNIX 6th Ed. - /usr/source/s2/update.s

   1:         sys     fork
   2:                 br 1f
   3:         sys     exit
   4: 1:
   5:         clr     r0
   6:         sys     close
   7:         mov     $1,r0
   8:         sys     close
   9:         mov     $2,r0
  10:         sys     close
  11: 1:
  12:         sys     sync
  13:         mov     $30.,r0
  14:         sys     sleep
  15:         br      1b
  16: sleep = 35.
  17: sync = 36.

Defined functions