Hi,

One big problem I have is with long calls, when I need to call a routine in
other
page, e.g. the routine in page 1 calls a routine in page 2. Or vice-versa.
You can say that LCALL can solve this but LCALL YY is translated in:

movlw XX
movwf PCLATH
call YY

Well If I want to pass parameters to the routine via W register, I can't.
I did a macro to fix this thing, could anyone tell me if is anything
wrong?
the macro is:
SCALL   macro   routine
.       if high(routine)>=8 & high($)<8
.           bsf PCLATH,3                                   ;call page 2 from pa
ge
1
.       else
.           if high(routine)<8 & high($)>=8
.               bcf     PCLATH,3                                   ;call page 1
 from
page 2
.           else
.               nop                                             ; call in the s
ame page
.           endif
.       endif
.       call    routine
.       endm

This macro will be translated in:
BSF PCLATH,3
CALL YY
or
BCF PCLATH,3
CALL YYY
or
NOP
CALL YY

The same idea can be used to make a GOTO macro so I can't worry about
page swap. Any comment are welcome.

Cheers,

Octavio
======================================================
Octavio Nogueira  - e-mail:   nogueira@mandic.com.br
http://www.geocities.com/~oct_nogueira
"ProPic" Production PIC Programmer Windows under US$20
======================================================