toaster sample in XP DDK

Hi,

I have build a filter driver based on diskperf.
And from this forum, someone posted that in the toaster folder there are
sample filter drivers too.
How different are they from the diskperf example?
And how do I filter bus?
Which registry class entry should I put my bus filter driver as upperfilters
in?
What does Bus filter driver filter?
All bus activity?
Including storage devices?

Thank You!

cheers,
vincent


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