Erratic Serial Mouse Behavior in Microsoft Diagnostics (MSD) (108586)



The information in this article applies to:
    Microsoft MS-DOS operating system 5.0
    Microsoft MS-DOS operating system 5.0a
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.21
    Microsoft MS-DOS operating system 6.22

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.

Modification Type: Major Last Reviewed: 5/6/2003
Keywords: KB108586