Jayesh,
[quote user="Jayesh Patel63136"]Question: Is it okay to include "C:\ti\bios_6_35_04_50\packages\ti\bios\include" directory in SYS-BIOS project configuration ?[/quote]
No, you should not include this. The ti/bios package is for legacy BIOS support only. If your app doesn't use legacy code, it should not have any references to the ti.bios package.
[quote user="Jayesh Patel63136"]We have noticed that "dev.h" file in above directory conflicts with SYS-BIOS device. If we remove above directory, the project can't compile as it can't find "std.h", "tsk.h", "log.h" files.[/quote]
Yes, you want to avoid such conflicts.
And why are you getting errors due to legacy files such as tsk.h, etc.? Those are legacy files. Are you including those files somewhere?
If so, then you still have legacy code in your app. You should change or remove those references.
Steve