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    AST RESEARCH, INC.           TECHNICAL BULLETIN # 1422              1-31-96

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    Switching Hard Drives with DOS/WFW between an Ascentia 950N/75 and a 950N/90

    PROBLEM

    When an Ascentia 950N/75 hard drive is placed into an Ascentia 950N/90 system,
    while in DOS and Windows for Workgroups, the Ascentia 950N P/75 hard drive
    may hang at the CSALLOC.EXE line of CONFIG.SYS.

    CAUSE

    Because there are differences in the system board design and the BIOS in
    each system, the resources are allocated differently between these systems.

    SOLUTION

    Edit the CSALLOC.INI file located in the Cardsoft directory.

    1. In the top section of the file, modify the MEM= and IRQ= lines to:

    		  MEM=D000-DFFF
    		  IRQ=9-B

    2. At the bottom of the file add:

    		  MEMEXCLUDE=C000-CFFF,E000-EFFF
    		  IRQEXCLUDE=5,C,F

    3. In the CONFIG.SYS FILE, modify the EMM386 line to:

    		  DEVICE=C:\DOS\EMM386.EXE NOEMS X=D000-DFFF

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501707-XXX      Ascentia 950 P/75 CSS10
    501708-XXX      Ascentia 950 P/75 CTS10

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