Q104189: MSD Reports an 80287 Math Coprocessor as an 80387

Article: Q104189
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.0,6.2,6.21,6.22
Operating System(s): 
Keyword(s): 
Last Modified: 23-NOV-1999

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The information in this article applies to:

- Microsoft MS-DOS operating system versions 6.0, 6.2, 6.21, 6.22 
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SYMPTOMS
========

The Microsoft Diagnostics (MSD) utility versions 2.0a (which ships with Windows
3.1) and 2.01 (which ships with MS-DOS 6.0) may report an 80287 math coprocessor
as an 80387 coprocessor.

Other diagnostic software may display similar results or say that the coprocessor
is not functioning properly.

CAUSE
=====

This problem is caused by the design of the hardware.

MORE INFORMATION
================

The following 80287 math coprocessors have been confirmed by their manufacturers
as being detected incorrectly by various diagnostic software programs or
utilities:

- Intel 287XL

- Cyrix 82S87

To obtain correct information regarding your 80287 coprocessor, use diagnostic
software provided with the hardware, or call the manufacturer for assistance.

Intel Customer Support (800) 538-3373 or (503) 629-7354
Cyrix Customer Support (800) 462-9749 or (214) 994-8387

Intel has a "FaxBack" number that you can use to obtain diagnostic information.
To obtain the Intel FaxBack article #3064, "Intel Math CoProcessors and
Diagnostic Programs," call Intel FaxBack at (800) 525-3019 or (503) 629-7576.

Additional query words: 6.22 6.00 6.20 287 387 PROCESSOR CO 3.1 MATHCO

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600
Version           : MS-DOS:6.0,6.2,6.21,6.22

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