Microsoft KB Archive/108586

= Erratic Serial Mouse Behavior in Microsoft Diagnostics (MSD) =

Article ID: 108586

Article Last Modified on 5/6/2003

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APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition
 * Microsoft MS-DOS 5.0a
 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q108586



SYMPTOMS
When you run Microsoft Diagnostics (MSD) version 2.0, 2.0a, or 2.01, your serial mouse may behave erratically.



CAUSE
This problem occurs when MSD un-synchronizes the mouse during its hardware scan of the serial ports.



RESOLUTION
Using the MSD /I switch usually allows the mouse to continue functioning in MSD until you choose either the COM Ports button or IRQ Status button.

To work around this problem, run MSD with the /I switch, or use the keyboard in MSD. In either case, you should restart your computer after you exit MSD to restore the serial port and IRQ states.



STATUS
Microsoft has confirmed this to be a problem in MSD versions 2.0, 2.0a, and 2.01. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: 6.22 6.20 2.00a 2.00 msd.com msd.exe

Keywords: KB108586

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