    =

    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1333                   8-1-95

    =

    	 TRAKKER 250 ATTACHED TO ASCENTIA 900N/910N GIVES ERROR MESSAGE
    			 WITH OS/2 BACKUP PROGRAM

    PROBLEM

    When using the Colorado Trakker 250 parallel port tape backup attached to an
    Ascentia 900N or 910N, the following error message appears:

    "Interrupt not available"

    The tape backup software being used is OS/2 Backup version 1.10 from
    Colorado Memory Systems.

    CAUSE

    Version 1.10 of Colorado Memory System's OS/2 Backup software is
    incompatible with the super I/O chip used to control the Ascentia's parallel
    port.  The software has been  re-written to correct this problem.

    SYSTEMS AFFECTED:
    AST PART NUMBER AND DESCRIPTION

    501299-2XX      ASCENTIA 900N 4/50 CS10
    501300-3XX      ASCENTIA 900N 4/50 CT9
    501302-2XX      ASCENTIA 900N 4/75 CS10
    501304-3XX      ASCENTIA 900N 4/75 CT10
    501590-301      ASCENTIA 910N 4/75 CS10
    501589-301      ASCENTIA 910N 4/75 CT10
    501589-401      ASCENTIA 910N 4/75 CT10
    501592-201      ASCENTIA 910N 4/50 CS10

    SOLUTION

    Registered owners of the Trakker 250 backup hardware should call Colorado
    Memory Systems' Customer Support at (970) 635-1500 for information on
    how to obtain the version 1.5 upgrade for their OS/2 backup software.