Hi, 
what you wrote is not a concern for 16C84 generally except using table
read. You can put subroutines wherever you want, with one exception:
if you modify PCL, then the memory address should be in the 1st half of an
512-byte page.

RP0 selects memory bank (nothing to do with program memory), and RP1 is
unused.

I guess your information may have been intermixed with that for 16C5x
chips.

I hope this helps.
Imre


On Mon, 3 May 1999, Andreas Magnusson wrote:

> Hi!
> 
> I have never really understud how to use the subroutines and the memory in a PIC16F84 correct.
> 
> I knew I have to put subroutines in the lower area of each memoryblock. How shall I do exactly.
> 
> Can I put a subroutine in the "lower area" and with a goto instruction go to another place in the memory and continu the routine there....?... :-?
> 
> And the memory I have read about«"long calls" and stuff like that where you have to change the RP0, RP1 status bits. Can't really say I understund anything...
> 
> When do I have to think about the "memory placement" when I am writing assambles?
> 
> 
> If anyone want's to explaine this for me I would be very happy!
> 
> /Andreas Magnusson
>