> Where in the data sheet do you find any claim that doing a return modifies
> PCLATH?
>
> On the parts that I've worked with, return has no effect on PCLATH.
> I usually wind up with something like:

Thanks for the fast answer but i've found the problem. (You also descriped
above).
I don't read the datasheet careful enought. (might be a problem of my bad
english, too)

I've fixed it with a small macro which checks the program location (page)
where it inserted and "restores" (set it with the right values) the PCLATH.

If anyone cares about, there it is:

---- snip -----------------------------------------------
poppclath macro

 if $ >= 0x0000 & $ <= 0x07ff
   bcf PCLATH,3  ; Set PCLATH to Page 0
   bcf PCLATH,4
 endif

 if $ >=0x0800 & $ <= 0x0fff
   bsf PCLATH,3  ; Set PCLATH to Page 1
   bcf PCLATH,4
 endif

 if $ >=0x1000 & $ <= 0x17ff
   bcf PCLATH,3  ; Set PCLATH to Page 2
   bsf PCLATH,4
 endif

 if $ >=0x1800 & $ <= 0x1fff
   bsf PCLATH,3  ; Set PCLATH to Page 3
   bsf PCLATH,4
 endif

 endm
---- snip -----------------------------------------------

After a CALL i insert this "POPPCLATH" to fix the PCLATH.

cu, Christian

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