What is the NB filter driver in the AES driver build?
This driver is only relevant for Windows Vista OS. The NB filter driver is a special case driver necessary to pass WLK/DTM WHQL test in Windows Vista. It works around an issue where the PCI device ID is supposed to be read only while the ASIC is set as RW. The filter driver intercepts the PCI calls through a software workaround. It does not otherwise affect functionality, and can be omitted if DTM compliance is not required. The filter driver doesn't apply to XP because the HCT test does not require this. This issue may not be noticed because the filter driver does not affect functionality -- it only affects DTM testing.