Hi,

I have n newbie question. I want to write a WDM device driver witch reads
the configuration space of the ICH4 Southbridge from Intel. Iâ??ve tried these
Code samples from Microsoft:

First with IRP_MN_QUERY_INTERFACE
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q253232

and then with IRP_MN_READ_CONFIG
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/kmarch/hh/kmarch/IputOput_1526c9e1-7391-4746-818b-8d4f384bd572.xml.asp

None of these worked. In both samples the IoCallDriver() Function failed.

Iâ??ve written the vendor and device ID in the INF File:

[Manufacturer]
%MfgName% = Device

[Device]
%FeatureDevice%=Feature_DDI, PCI\VEN_8086&DEV_24C0&SUBSYS_00000000&REV_02

I canâ??t see the error Iâ??ve made. Could some of you give me some hints?