    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1510           6-14-96

    TITLE: Ascentia 950N, Xircom, Ethernet Modem

    SUMMARY

       If your system uses Card and Socket services (i.e. SystemSoft
       Cardsoft 3.10), you may not be able to simultaneously use the modem
       and Ethernet functions of the Xircom PS-CEM-28BT Ethernet Modem
       28.8 card.

        This issue applies to all Ascentia 950N systems.

    ISSUE

       If Card and Socket Services are being used in conjunction with the
       drivers for the Xircom dual card, it may not be possible to use
       the Ethernet and modem simultaneously.

    BACKGROUND

       If Card and Socket Services PC card drivers are loaded in
       conjunction with the Xircom PS-CEM-28BT drivers, the modem and
       Ethernet functions of the card use the same interrupt.

       This problem does not occur when using the Xircom-supplied drivers
       without Card and Socket Services.

    ACTION

       AST Research, Inc. and Xircom recommend that the drivers supplied
       by Xircom be used alone, to enable full functionality of the Xircom
       PC card.

    NOTES

        N/A

    TAN TPR001141RK

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