    AST RESEARCH, INC.         TECHNICAL BULLETIN #0843               07-08-93

                 POWER PREMIUM AND APPIAN'S RENDITION II/XE ADAPTER

    PROBLEM:       Appian's Rendition II/XE adapter is not recognized when
                   installed in AST's Power Premium.  This can be verified by
                   running Appian's diagnostics.

    AFFECTED
    SYSTEMS:       All AST Power Premium Systems.

    CAUSE:         The Rendition II/XE adapter requires an I/O address of 2BEH,
                   creating a conflict with the C&T 82C711 chip which uses I/O
                   addresses 2BD-2BFH.

    SOLUTION:      The system board (part number 202441-001) must be revision
                   level x26 or higher to avoid this conflict.  C&T's 82C721 chip
                   is used on these later revision levels and does not conflict
                   with the Rendition II/XE adapter's I/O address.