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      STACKER NOTE                                         STACKER NOTE
                 THE STACKER XT/8 COPROCESSOR CARD & EMM386
                    (Applies to All versions of Stacker )
      STAC FAX  2102 (01-03-1994)
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      BACKGROUND
      
      Many  people use DOS's EMM386 as their memory manger. If you have
      the  XT/8 coprocessor card you must exclude its 16K upper  memory
      address range from use by EMM386.
      
      EXCLUSION OF MEMORY ADDRESS
      
      For  Stacker  versions  3.0  or  prior,  you  can  determine  the
      coprocessor address by examining the /B= parameter on the Stacker
      device  line  in CONFIG.SYS.  For Stacker 3.1 the  /B=  parameter
      will  be  found  in the STACKER.INI file. Refer to  your  Stacker
      User's  Guide for information on examining the STACKER.INI  file.
      For example, if /B=CC00, the EMM386 line would read:
      
           DEVICE=C:\DOS\EMM386.EXE NOEMS  x=cc00-cfff
      Failure  to  exclude  the  address will  result  in  the  message
      "Coprocessor not functioning, invoking software driver."
      
      The following table lists the seven possible memory ranges, based
      on the base address of the XT/8 co-processor card.
      
      Base Address   <Range> to Exclude
        c400     c400-c7ff
        c800     c800-cbff
        cc00     cc00-cfff
        d000     d000-d3ff
        d400     d400-d7ff
        d800     d800-dbff
        dc00     dc00-dfff
      
      NOTE:  The Stacker AT/16 card uses an exclusive I/O address so it
      requires no special treatment.
      
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      Copyright 1994 Stac Electronics