Excel AppNote: Pentium Floating Point Unit Patch (WE1136)Last reviewed: October 7, 1997Article ID: Q123783 |
The information in this article applies to:
The "Pentium Floating Point Unit (FPU) Patch" (WE1136) Application Note is now available from Microsoft Product Support Services (PSS). The WE1136 disk included with this application note contains a patch that you can use to test for a faulty FPU and to disable the FPU in your computer when you use Microsoft Excel. You can obtain this Application Note from the following sources:
THE TEXT OF WE1136
Microsoft(R) Product Support Services Application Note (Text File) WE1136: PENTIUM(R) FLOATING POINT UNIT (FPU) PATCH Revision Date: 12/94 1 Disk IncludedThe following information applies to Microsoft Excel for Windows(TM), version 4.0, 4.0a, 5.0, 5.0a, 5.0c.
--------------------------------------------------------------------- | 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 (C) 1994 Microsoft Corporation. All Rights Reserved. | | Microsoft and MS-DOS are registered trademarks and Windows and | | Windows NT are trademarks of Microsoft Corporation. Intel and | | Pentium are registered trademarks of Intel Corporation. | --------------------------------------------------------------------- IntroductionIf you are using Microsoft Excel on a computer that contains an Intel(R) Pentium processor, you may receive unexpected results when you perform mathematical operations that involve dividing certain combinations of numbers. This problem is caused by an error in the FPU, a part of the Intel Pentium chip that performs elaborate calculations. Intel is aware of this problem. The disk included with this Application Note contains a patch for use with Microsoft Excel for Windows version 4.0, 4.0a, 5.0, 5.0a, or 5.0c. The patch allows you to do the following:
NOTE: This patch works with Microsoft Excel versions 4.0, 4.0a, 5.0, 5.0a, and 5.0c (including all non-English language versions). The patch does not work with Microsoft Excel version 5.0 for Windows NT(TM). To copy the patch to your hard disk drive
To test for a faulty FPU
To run the Pentium FPU patchAt the MS-DOS prompt, type the following and press ENTER:
p5patch /pNOTE: The FPU is now disabled for Microsoft Excel. If you want re-enable the FPU for Microsoft Excel, you can remove the patch. To remove the patch, type the following and press ENTER:
p5patch /u To update the formulas on your worksheetAfter you have installed the patch, do either of the following to update the formulas on your worksheet:
TO OBTAIN THIS APPLICATION NOTENote that the first three methods listed below are the quickest ways to obtain the Pentium FPU Patch. The size of the file WE1136.EXE is approximately 16K. The following file(s) are available for download from the Microsoft Software Library:
~ WE1136.EXE (size: 16359 bytes)For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q119591 TITLE : How to Obtain Microsoft Support Files from Online ServicesIf you are unable to access the source(s) listed above, you can have this Application Note mailed to you by calling Microsoft Product Support Services Monday through Friday, 6:00 A.M. to 6:00 P.M. Pacific time at (425) 635-7070. If you are outside the United States, contact the Microsoft subsidiary for your area. To locate your subsidiary, see the Microsoft World Wide Offices Web site at:
http://www.microsoft.com/worldwide/default.htm |
Additional query words: 4.00 4.00a 5.00 5.00a 5.00c p5 numeric
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