    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1505           6-14-96

    TITLE: Ascentia950N, ProStation, IBM Token Ring

    SUMMARY

       The Ascentia 950N and ProStation may not recognize an IBM 16/4 Auto
       Token Ring card.

       This issue applies to all the Ascentia 950N systems and the
       following ProStations: 501759 and 501760.

    ISSUE

       When attempting to setup the IBM 16/4 Auto Token Ring card in a
       ProStation that is connected to an Ascentia 950N system, the system
       may not recognize the IBM 16/4 Auto Token Ring ISA card in the
       ProStation.

    BACKGROUND

       LANAid version 1.4 incorrectly reports that all available resources
       are being used.

    ACTION

       Use switch bank SW1 to set the ProStation memory starting address
       to E000.  Refer to the ProStation User's Guide for switch settings.

       Boot the system to DOS and run LANAid to setup the token ring card.

       LANAid will report that all resources of at least one of the
       configuration parameters are being used.  Select OK.
       The next screen will also report that there are no available
       resources.  Select OK.

       Select "Standard Install".

       Select "Configuration".

       Select "Manual Configuration", then select unused resources for IRQ,
       I/O address,  ROM address, RAM address, and RAM size.

       Select "PnP configuration", and "Lock Resources".

       Select 16 bit bus width.

       Select "Store".

       LANAid will report that Plug-and-Play is not detected.
       Select "Accept".

       Exit LANAid.  The resources for the Token Ring card are now locked
       and the system will function properly.

    NOTES

       There is a conflict in the sound option's default base memory
       address 220h with the AST PCMCIA Token Ring card.

       The default base address 220h should not be used to avoid the
       conflict with the sound.

       To configure the sound to work with the Token Ring card, perform
       the following step:

       1.  In CONFIG.SYS, change the exclude memory address statement from
           D400-D8FF to D000-DFFF.

       2.  In System Setup, Sound Option, select a Base Address from
           the following:

              240h
              260h
              280h

       Save the settings and exit.
       Reboot the system.

       For additional information, see TB 1260 on AST's On-Line! services.

    TAN 005700DF

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