WW0548: WIN87EM.DLL Patch for Intel 80387

The information in this article applies to:

• Microsoft Windows operating system versions 3.1, 3.11

Microsoft has an Application Note that contains a revised Windows WIN87EM.DLL file for use with the Windows 3.1 and the Intel 80387 math coprocessor. The Intel 80486DX and 80486DX2 processors do not require the new file.

You can obtain this Application Note from the following sources:

• Microsoft's World Wide Web Site on the Internet
• The Internet (Microsoft anonymous ftp server)
• Microsoft Download Service (MSDL)
• Microsoft Product Support Services

THE TEXT OF WW0548

    Microsoft Product Support Services Application Note (Text File)
               WW0548: WIN87EM.DLL PATCH FOR INTEL 80387

                                                   Revision Date: 5/92
                                                         Disk Included

 --------------------------------------------------------------------
| INFORMATION PROVIDED IN THIS DOCUMENT AND ANY SOFTWARE THAT MAY    |
| ACCOMPANY THIS DOCUMENT (collectively referred to as an            |
| Application Note) IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY      |
| KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO    |
| THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A     |
| PARTICULAR PURPOSE. The user assumes the entire risk as to the     |
| accuracy and the use of this Application Note. This Application    |
| Note may be copied and distributed subject to the following        |
| conditions: 1) All text must be copied without modification and    |
| all pages must be included; 2) If software is included, all files  |
| on the disk(s) must be copied without modification [the MS-DOS(R)  |
| utility DISKCOPY is appropriate for this purpose]; 3) All          |
| components of this Application Note must be distributed together;  |
| and 4) This Application Note may not be distributed for profit.    |
|                                                                    |
| Copyright 1992 Microsoft Corporation. All Rights Reserved.         |
| Microsoft and MS-DOS are registered trademarks and Windows         |
| is a trademark of Corporation Microsoft.                           |
 --------------------------------------------------------------------

INTRODUCTION

The enclosed WW0548 disk contains a revised Windows WIN87EM.DLL file. You must be using Windows version 3.1 to use this dynamic-link library (DLL) file. If you have a version of Windows earlier than 3.1, you do not need to replace your current WIN87EM.DLL file. You also do not need to replace your WIN87EM.DLL file unless you are using the Intel 80387 math coprocessor. The Intel 80486DX and 80486DX2 processors do not require the new file.

Installation

1. Exit Windows. The WIN87EM.DLL file that you will be replacing is used by Windows and, therefore, cannot be updated while you are running Windows.

2. Insert the enclosed WW0548 disk in your floppy disk drive.

3. Copy the file from the WW0548 disk to your Windows \SYSTEM subdirectory. To do this, type the following from the command prompt and press ENTER

         copy <drive>:\win87em.dll <destination>
   

   where <drive> is the letter of the floppy disk drive and <destination> is the path to the Windows \SYSTEM subdirectory. For example, if your Windows \SYSTEM subdirectory is \WINDOWS\SYSTEM on drive C and you have inserted the WW0548 disk in drive A type the following:

         copy a:\win87em.dll c:\windows\system
   

4. Restart Windows.

TO OBTAIN THIS APPLICATION NOTE

You can find WW0548.EXE (size: 25065 bytes) 
                       , a self-extracting file, on the following

• Microsoft's World Wide Web Site on the Internet

        On the www.microsoft.com home page, click the Support icon.
        Click Knowledge Base, and select the product.
        Enter kbfile WW0548.EXE (size: 25065 bytes) 
                               , and click GO!
        Open the article, and click the button to download the file.
  
  

• Internet (anonymous FTP)

        ftp ftp.microsoft.com
        Change to the Softlib/Mslfiles folder.
        Get WW0548.EXE (size: 25065 bytes) 
  

• Microsoft Download Service (MSDL)

        Dial (425) 936-6735 to connect to MSDL
        Download WW0548.EXE (size: 25065 bytes) 
  

   ARTICLE-ID: Q119591
   TITLE     : How to Obtain Microsoft Support Files from Online
               Services