From: azuzek@nospam.accessplus.com.ar.retro.com   
      
   "Kevin Willoughby"  escribió en   
   el mensaje news:MPG.1a8260716cac89c6989c25@news.rcn.com...   
   > In article , invalid@nospam.com   
   > says...   
   > > Uhh...i heard something about extensive use of JAVA.   
   >   
   > I'm not quite sure of the extent of "extensive", but yes, Java (not all   
   > upper-case, please) was one of the many, many tools used on MER.   
   >   
   I would be very surprised to know that the rover itself runs Java code. I   
   don't think Java meets the hard real time requirements of the rover   
   software. For instance, you absolutely need to know how much time each task   
   will need to complete, but in Java you can't predict when the garbage   
   collection will run, making the whole system unpredictable. I do now that   
   the OS is VxWorks, which was designed for RT systems and that C was used (at   
   least partially) in the flight software.   
      
   The Maestro software is written in Java. It is a simplified version of the   
   system the misson planners use to test the commands they will later send to   
   the rover and it is reasonable to asume that the full version is written in   
   Java too.   
      
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