    AST RESEARCH, INC.         TECHNICAL BULLETIN #0693                  06-20-91

              PREMIUM/386-25 PARALLEL PORT AND INTERACTIVE SYSTEMS UNIX

    The following represents a problem as reported from the field:

    SYMPTOM:

    If the system is "powered on" and the printer is "not applied", the console
    is rendered inoperative.

    CONFIGURATION:

    Premium/386-25
    Unix System version 2.2.1, running Multi-User mode.
    Printer attached to parallel port on 386/25.

    CAUSE:

    This is a known problem with Interactive Systems Unix operating system.

    SOLUTION:

    There is no known resolution at this time.  Customers experiencing the above
    problem should contact the manufacture Interactive Systems for details.