Microsoft KB Archive/97847

= Mouse Support for Nonstandard IRQs and IO Addresses =

PSS ID Number: 97847

Article Last Modified on 10/2/2003

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The information in this article applies to:


 * Microsoft Mouse

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This article was previously published under Q97847



SUMMARY
Microsoft Mouse version 9.0 drivers support standard serial mouse ports and mouse ports that adhere to the IBM PS/2 standard. The drivers do not support nonstandard IRQs and IO addresses for serial, PS/2, InPort bus board, or old-style bus board (the precursor of the InPort).

Microsoft is considering support for nonstandard serial mouse ports in a future release of these drivers.



PS/2 Port and Mouse
The PS/2 port and mouse are handled by the BIOS directly; the mouse driver generally doesn't directly interact with the hardware. If the machine has the appropriate BIOS interface set up correctly (using Interrupt 15H), the Microsoft Mouse functions correctly.

Serial Port and Mouse
If you have nonstandard settings, it is most likely that you are using a serial connection. Both the Windows-based and MS-DOS-based mouse drivers support COM1 and COM2 only. COM1 is defined to be IO address 3f8h and IRQ 4; COM2 is defined to be IO address 2f8h and IRQ 3.

NOTE: Version 9.0 of the Microsoft Mouse does not work on COM3 in either Windows or MS-DOS. As a possible workaround, you can try to configure COM3 to appear exactly like COM1 or COM2 (with the appropriate IO address and IRQ).

Keywords: connections KB97847

Technology: kbMouseSearch kbMSHardwareSearch

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