Microsoft KB Archive/153381

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PRB: Odd VMOUSE Int 15 Calls Appear Instead of AX=0C2xx

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Q153381

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The information in this article applies to:


 * Microsoft Win32 Device Driver Kit (DDK) Windows 95

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SYMPTOMS
If you are debugging your PS/2 device and watching INT 15h calls, you may see some odd function calls generated by VMOUSE. You might be looking for standard mouse calls matching AX=0C2xx, for example. During default PS/2 mouse initialization you might see the following INT 15h calls just before the standard initialization:

with AX = 0F963h

with AX = 0F95Fh

CAUSE
These are used internally by the operating system. The first one always occurs. These do not affect normal PS/2 devices and can be ignored.

STATUS
This behavior is by design.

Keywords : kbDDK kbInput kbMouse kbHID

Issue type :

Technology : kbAudDeveloper kbWin95search kbWinDDKSearch kbWin32sSearch kbWin32DDK95 kbWin32DDKSearch