OK, thanks for your replies. I have a few questions regarding those:

1. What's an in circuit emulator? Is it a trainer board?

2. Does CALL actually use 2 bytes of stack space? Then is there a difference between LCALL and ACALL in terms of stack space?

3. Is there a way to initialize the stack pointer to an external memory location?

I think the problem is with the stack space. Since my program functions are calling each other a lot, ie: Function A calls Function B, which calls Function C, which calls..... I'm reusing a lot of code to save space.

If there's no way to initialize the stack pointer to external memory, are there any other suggestions?

Thanks a lot.


Regards,

Kuan Liung