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       STACKER NOTE                                         STACKER NOTE
                          STACKER COPROCESSOR DRIVERS
                 (Applies to Stacker 3.1 for Windows and DOS)
       STAC FAX 31017  (09/28/93)
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       BACKGROUND
       
       If your Stacker coprocessor was installed and working at the time
       you installed Stacker 3.1, you can configure Stacker 3.1 to
       resume using it by following these instructions.
       
       NOTE:  These instructions only apply if you are running Stacker
       3.1 for MS-DOS 6.
       
       SOLUTION
       
        Determine the base address for your AT/16 or XT/8 coprocessor
        Add the coprocessor driver to your CONFIG.SYS file
        Restart your computer
            
       Determine the base address for your AT/16 or XT/8 coprocessor
       
       Skip this section if you have the MC/16 coprocessor.
       
        1. From the DOS prompt, type STACKER and press <Enter>.
       
        2. Note the drive letter of the uncompressed drive which
           is exchanged with C (your boot drive).  The drive letter is
           displayed in the far right column.
       
        3. From the DOS prompt, type
       
                    STACINI drive: <Enter>
       
           where drive: is the letter of the uncompressed boot drive.
       
        4. Write down the number after the /B=.  This is the base
           address for your coprocessor.  The possible base addresses
           are:
                            AT/16             XT/8
                            -----             ----
                             200              C400
                             220              C800
                             240              CC00
                             260              D000
                             280              D400
                             2A0              D800
                             2E0              DC00
                                       
        5. The /B= switch has no effect in the STACKER.INI file. Move
           the cursor to this line and press DEL repeatedly to remove
           it.
       
        6. Press Ctrl+Z to save the file.
            
       Add the coprocessor driver to your CONFIG.SYS file
       
        1. Edit your CONFIG.SYS file by changing to the root directory
           of your boot drive and typing:
       
               ED CONFIG.SYS
       
        2. Type one of these lines immediately before the line that
           begins with "DEVICE. . ." and ends with "...STACHIGH.SYS":
       
               DEVICE = C:\STACKER\LZS_XT8.SYS /B=base address
                      or
               DEVICE = C:\STACKER\LZS_AT16.SYS /B=base address
                      or
               DEVICE = C:\STACKER\LZS_MC16.SYS
       
           where base address is the number from the /B= line.
       
        3. Press Ctrl+Z to save the file.

        4. Restart your computer to put the change into effect.
       
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       Copyright 1993, Stac Electronics