    AST RESEARCH, INC.         TECHNICAL BULLETIN #0682                  05-06-91

             AST PREMIUM SYSTEMS WITH BUILT-IN MOUSE PORTS AND ADIC'S DCB

    When installing two ADIC DCB controller cards, Channel 1 and Channel 2 in an
    AST computer, errors will occur on the second DCB controller which is Channel
    2, (i.e., Channel 2 will fail to initialize under Novell Netware environment
    and will also fail ADIC diagnostics).

    The problem lies with IRQ12, which supports the PS/2 mouse port.  ADIC's DCB
    controller card Channel 2 is hard wired, this cannot be changed.  (IRQ12 is
    accepted as Industry Standard for PS/2 mouse port).  ADIC's Technical Support
    recommends that the customer using the DCB Channel 2, switch and use DCB
    controller Channel 3 which uses IRQ10.  Customers experiencing the above
    problem should contact ADIC's Technical Support to exchange DCB controller
    cards.