The implementation of a new system service call with the Windows Research Kernel requires only a few steps:
* Insert entries for the new system service call into the system service dispatch table (files systable.asm and sysstubs.asm).
* Implement the new system service function.
* Create a user mode wrapper function for the system service call.

Read more ...Windows Research Kernel @ HPI - news, howtos and labdescriptions » Howto: Implementation of new system service calls (I)

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Ever asked how Windows API retrieves the current time, the version of the OS, or whether an evaluation period has expired? This structure will answers some of these questions.

Windows Research Kernel @ HPI - news, howtos and labdescriptions » Getting OS Information — The KUSER_SHARED_DATA Structure

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