AST RESEARCH, INC.              TECHNICAL BULLETIN # 0940             6-24-94




                  POWEREXEC DRIVE BAY ADAPTER FAILING IN A PREMMIA LX


PROBLEM:        The PowerExec Hard Drive Bay Adapter will not function in a
                Premmia LX desktop.

CAUSE:          The Premmia LX supports up to four IDE drives on the
                motherboard.  To support this, the Premmia LX uses the I/O
                address range of 170-177h for the secondary hard disk adapter.
                Since the PowerExec Drive Bay Adapter is designed as a
                secondary hard disk adapter, it also uses the same I/O range
                causing a memory address conflict.

SYSTEMS
AFFECTED:       All PowerExec Hard Drive Bay Adapters.

                    AST                                              REVISION
                PART NUMBER           DESCRIPTION                      LEVEL

                500985-001      P/EXEC HARD DISK RECEPTACLE             All

SOLUTION:       1) If the Premmia LX has two IDE hard drives or less, remove
                   the PowerExec Drive Bay Adapter card.  Using the IDE cable
                   provided, directly connect the drive bay receptacle to the
                   PCI IDE hard drive connector located at position J7H1 on the
                   Premmia LX system board.
                2) Enter CMOS SET-UP and verify that all hard drive types
                   are set to AUTO.  This will allow the PowerExec drive to be
                   detected and configured automatically upon POST.

CAUTION:        In no case will AST Research, Inc. be liable for damage to the
                system or loss of data caused by improper or faulty
                installation of this file.