multitos

from The Free On-line Dictionary of Computing (8 July 2008)
MultiTOS

   <operating system> (MTOS) A new version of {TOS}.  MultiTOS's
   main advantage was support for {pre-emptive multitasking} and
   {memory protection}.  It also supported the latest (and far
   superior) versions of {GEM}.  MultiTOS was supplied with the
   Falcon030 range of computers from {Atari}.

   It is a little known fact that the MultiTOS {kernel} was based
   heavily on the {freeware} OS {MinT} which was developed long
   before Atari got MultiTOS working.

   (1997-01-10)
    

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