os3 vs. os4


R. Clayton (rclayton@monmouth.edu)
(no date)


It seems os3 is broken; it doesn't run the ttycopy program any more.

  os3 is obsolete; you should use os4 instead:

    $ /e*/h*/c*/*5/S*/b*/os4 -d /e*/h*/c*/*5/d*/pa2-ttycopy.dsk \
                             -t /e*/h*/c*/*5/d*/pa2-ttycopy.tty

    The system is halted.
    Total execution time: 2728 ticks, idle time: 769 ticks (28%).

    $ diff results.tty /e*/h*/c*/*5/d*/pa2-ttycopy.tty

    $ /e*/h*/c*/*5/S*/b*/os3 -d /e*/h*/c*/*5/d*/pa2-ttycopy.dsk \
                             -t /e*/h*/c*/*5/d*/pa2-ttycopy.tty
    * * * tty write returned status code 9.

    The system is halted.
    Total execution time: 79 ticks, idle time: 43 ticks (54%).

    $

  I don't know why I didn't delete them before; they've been deleted now.

My 3rd programming assignment has the same problem: everything was working
properly, but now when i try to recheck my code it is giving me errors

* * * disk write failed with status code 9
* * * tty write returned status code 9

  Because your code is having the same problems as os3, it might be from the
  same cause: you're using copies of obsolete files. Recompile everything
  using the current versions given in the class directories.



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