    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1551         8-13-96

    TITLE: Ascentia, CardWizard, A20/220 Conflict

    SUMMARY

       The multimedia Ascentia J may experience an address conflict with
       the CardWizard add-in card.

       This issue affects all multimedia Ascentia J systems or other
       multimedia computers using SystemSoft's CardWizard.

    ISSUE

       An address conflict may result if the sound chip in the Ascentia J
       multimedia computer is configured to use port address 220h, and
       a PC card using CardWizard is configured for port address A20h.

    BACKGROUND

       By default, CardWizard is configured to decode I/O (input/output)
       by looking at the first 10 bits of a port address.  When the
       hexadecimal numbers A20h and 220h are translated to binary form,
       they look the same if only the first ten digits are read.

          A20h = 101000100000
          220h =   1000100000

       When reading from left to right, if only the first ten digits are
       read, these two numbers look identical.

    ACTION

       To correct this problem the user must modify the CSALLOC.EXE file
       parameters.  To do so, follow the steps listed below:

       1.  In the Cardwiz directory, enter the following:
           config /all
       2.  Press the  keys to open the utilities menu.
       3.  Press the down arrow key to Binary Adaptation and press the
            key.
       4.  Press the  keys.
       5.  Press the down arrow key to CSALLOC.EXE and press the
           key.
       6.  Press the down arrow key to /IODECODE and press the
           keys to edit the file.  The Default value will be A.  Change
           this value to C.
       7.  Press the  key twice.
       8.  Press the  keys to save the changes and then press the
            key.
       9.  Press the  keys to open the file menu.
       10. Press the  key to exit the configuration utility.
       11. Reboot the system.

    NOTES

       N/A

    TAN 003400GW

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