    AST RESEARCH, INC.         TECHNICAL BULLETIN #0623A                  02-08-91

              COMPUTONE INTELEPORT 8 CARDS AND PREMIUM 386/25 AND 386/33

    In order for Computone Inteleport Advantage 8 Multiport Cards to function
    correctly with the AST Premium 386/25 and 386/33 computers, the following
    items are required:

        1.  Obtain a software patch from Computone for the Inteleport Advantage 8
            card for use with the Premium 386/25 and 386/33.

                - Version 4.58 for SCO UNIX

                - Version 4.54 for SCO XENIX

            Computone will provide this patch on request to customers who call
            (404) 475-2725.

        2.  In addition to the Computone patch, the 16th megabyte memory caching
            feature on the Premium 386/25 and 386/33 must be disabled.  Use
            ASTSETUP to disable this feature prior to installing the patch from
            Computone.