Hi sanjeev,

no problem.
As the dataseeht explains, movc executed from external code is not able to access internal code when LB1 is set (minimal security mode).
I'm aware of this fact, since this is what code protection is all about ;-)

This is actually not a big problem, because it allows you to execute code from internal and external code space (addresses Mohits question).
Lookuptables, Message for LCD etc. cannot be shared from internal ROM, but it works with external, since movc inside internal code is able to access the code stored in the external one.

This 'problem' can also be solved by a callback hook inside the internal code - internal routines can be called by external code.

I've already done such a design with great success =)

Cheers, Roger