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            HOW WINDOWS 3.0 WORKS WITH INBOARD 386 AND 386/PC            
                                                                         
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    This document describes compatibility issues between Windows 3.0 and
    Intel's Inboard 386 and Inboard 386/PC.

    INBOARD 386
    

        The Inboard 386 is fully compatible with Windows 3.0 running in all
        operating modes: Real mode, Standard mode, and 386 Enhanced mode.  

    INBOARD 386/PC
    

        The Inboard 386/PC is compatible with Real mode of Windows 3.0 but
        not Enhanced mode.  Standard mode will run on some computers which
        contain Inboard 386/PC but not others.

    REAL MODE

        Windows 3.0 is compatible with Inboard 386/PC in Real mode.  You
        must use the command  "WIN /R" to start Windows 3.0.   If you
        don't, Windows will try to run in Standard or Enhanced mode because
        it sees the 80386 microprocessor.

    STANDARD MODE

        Windows 3.0 has been reported to run in Standard mode on the
        Inboard 386/PC in some systems but not in others.  Variations in
        system boards, ROM BIOS, video cards, drive controllers, and other
        add-in boards can cause problems.  If Standard mode does not run on
        your system, chances are it's because of something other than the
        Inboard 386/PC.  For this reason Intel does not support running
        Windows 3.0 in Standard mode with Inboard 386/PC.

        If you wish to experiment with Standard mode operation, follow
        these guidelines:

            Be sure HIMEM.SYS loads after INBRDPC.SYS in your CONFIG.SYS
            file.
            Do not load the ILIM386.SYS program.
            Do not use any device on IRQ 2 or else the WIN /S command may
            lock up the system. A Microsoft bus mouse board or an ATI VGA
            card with mouse port are examples of devices that can use IRQ
            2. Try using an alternate IRQ number.
            If you run into problems, contact the manufacturers of your
            system or other add-in boards for Windows 3.0 compatibility
            information.

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    386 ENHANCED MODE

        Windows 3.0 will not work with Inboard 386/PC in 386 enhanced mode
        due to limitations of the computer. AT ROM BIOS, DMA channels and
        keyboard controller interface are examples of things that Windows
        3.0 might need from a AT-type system that are not found in a PC/XT-
        type system.

    WINDOWS 3.0 AND 386 MEMORY MANAGERS
    

        Windows 3.0, in Real mode, is compatible with 386 memory managers
        like ILIM386 (which comes with the Inboard) or Quarterdeck's
        QEMM386.  These programs allow Windows 3.0 to use EMS memory to run
        programs and store data.  You can also use the LOADHI feature with
        QEMM386 to free up conventional memory.

        There are, however, a few limitations.  In this mode, Windows 3.0
        can't display more than one non-Windows program on screen at a
        time. This means if you're running Lotus 1-2-3, for example, you
        can't display another program in an overlapping window.  Also
        Windows can't use your hard drive as "virtual memory" for swapping
        programs in and out of RAM.  

        The 386 expanded memory manager that is shipped with Windows 3.0 is
        not compatible with the Inboard 386/PC.  Use the ILIM386 program or
        QEMM386 instead.

    WINDOWS 3.0 AND DISK CACHING PROGRAMS
    

        Microsoft recommends not using Intel's ICACHE program with Windows
        3.0.  Use Microsoft's SMARTDRV.SYS if you desire disk caching. 

    YOUR OPINION COUNTS
    

        We encourage your input. If you are interested in a special version
        of Windows 3.0 for Inboard 386/PC, please let us know. Order
        document 9000 from our FaxBack service at: (800) 525-3019. FaxBack
        will FAX you a feature request form that, upon its return, will be
        passed to the Inboard Product Manager.  Intel will measure demand
        for a special version of Windows 3.0 based upon returns of the
        FaxBack document.

        Your input is also relevant for Microsoft.  They developed the
        existing Windows/386 for the Inboard 386/PC.  To let them know that
        Windows 3.0 is important for Inboard 386/PC, contact Microsoft at
        (206) 454-2030.





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