    AST RESEARCH, INC.         TECHNICAL BULLETIN #0753                  04-20-92

                      PREMIUM II 386/33 WITH BARR/3 SDLC BOARD

    PROBLEM:       When using a Premium II 386/33, the BARR/3 SDLC board from
                   BARR Systems will not function in DMA mode.

    AFFECTED
    SYSTEMS:       Premium II 386/33 Systems with Processor card (part number
                   202403-002).

    CAUSE:         Incompatibility with the BARR/3 SDLC card.

    SOLUTION:      BARR Systems has modified their existing BARR/3 SDLC board,
                   revision 1A, which functions correctly under DMA mode.
                   Contact BARR Systems for upgrade information.