Microsoft KB Archive/214454

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INFO: NdisMRegisterInterrupt Fails on Multiprocs

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Q214454

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The information in this article applies to:


 * Microsoft Win32 Device Driver Kit (DDK) for Windows NT, version 4.0

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SUMMARY
NdisMRegisterInterrupt fails on a Multiproc system, but runs on a UniProc system. Typically, this behavior is seen on systems with ISA network cards.

MORE INFORMATION
NdisMRegisterInterrupt calls into the IO manager, and then the HAL to handle the interrupt registration. One of the parameters used in this registration is the Interface type. The Interface type is necessary for the HAL to identify on which bus the interrupt is located.

The Interface type used in NdisMRegisterInterrupt is determined by the AdapterType parameter in the NdisMSetAttributes(Ex) call. For ISA cards, this parameter must be set to NdisInterfaceIsa (1).

Failing to call NdisMSetAttributes, or setting the interface type to a value of zero (0), allows the driver to work on some Uniproc systems, when the Internal bus type is ISA, but to fail on Multiproc systems, and on some non-ISA Uniproc systems.

Additional query words:

Keywords : kb3rdparty kbDDK kbKMode kbNDIS kbOSWinNT kbOSWinNT400

Issue type : kbinfo

Technology : kbAudDeveloper kbWinDDKSearch kbWin32sSearch kbWin32DDKSearch kbWin32DDKNT400 kbWin32DDKNTSearch