UniDOS Notes  --  Release 1.11  --  May 12, 1986


Because UniDOS is constantly changing, please be sure to send in
your registration card so we can inform you of new versions and
products.

There are three new UniDOS options that have been added since the
manual was printed.  They are the /B, /R, and /X options.  If you
don't recognize what the options are for from the descriptions,
then you probably don't need them.  Most programs will function
without specifying any of these options.

     /B - The /B option will instruct UniDOS to route all console
          I/O through the BIOS vectors as stated in Appendix D.  
          Since very few programs need this capability, it was
          made an option because the screen display time is a
          little slower when the /B option is used.

     /R - The /R option should be used if you want to redirect
          the console I/O using the DOS I/O redirection
          capability.  This has been made an option because the
          screen display time is a little slower if redirection
          is allowed.  If you use the /R option, make sure that
          ANSI.SYS is not in your CONFIG.SYS file!  If it is and
          you use the /R option, everything will be printed on
          one line.

     /X - The /X option will give extra buffer space to UniDOS
          for programs that calculate free disk space.  If the /X
          option is not specified, the default buffer space is
          large enough to accomodated disk drives up to about 2
          megabytes.  The extra space reserved with the /X option
          is specified in 1K units.  A typical 20 Mb hard disk
          drive requires an extra 2K of buffer space, so UniDOS
          should be invoked along with a /X2 option if you are
          running programs that display free disk space.  The
          number specified after the /X option should be between
          0 and 32.  If no number is specified, 0 is assumed.  
          The 0 value is used when you want to reset the buffer
          size back to the default value.  Any extra buffer space
          requested with the /X option will reduce the area
          available for your program to run in.  An important
          point to note is that the /X option is never required
          for a program to operate.  If your program tries to
          calculate the available disk space and needs more
          buffer space, UniDOS will inform you that the free
          space that your program will give you will be
          incorrect.  UniDOS will also tell you the correct /X
          option that should be specified if you want the program
          to correctly report free disk space.

These options are used when you run the UniDOS program.  Refer to
Section 3.1.1 for a summary of the rest of the UniDOS options.

If you have a V-Series microprocessor chip installed in your
computer and your program doesn't run properly, be sure to try
the /I option before giving up.  This will instruct UniDOS to
use interpreter mode.  In this mode UniDOS will simulate the
operation of a Z80 microprocessor chip.  If your program has any
Z80 instructions in it, the V-Series chip can't be used to run
it.  For more information, see Appendix C.


PROGRAMS THAT WILL NOT RUN WITH UniDOS

Osborne 1 Supercalc - The version of Supercalc that was bundled
                      with the Osborne 1 computer will not work
                      with UniDOS because it was written to
                      directly access the Osborne 1 screen memory.  


Thank you.

Micro Solutions, Inc.