Hello,

    I think I'm doing an stupid question, but there's a way to swap the
contents of W and a file on a single instruction?

    I want to shift the values inside a buffer and I know I can do:

        MOVF   buf1,W
        MOVWF  buf0    // buf0 = buf1
        MOVF   buf2,W
        MOVWF  buf1    // buf1 = buf2
        MOVF   buf3,W
        MOVWF  buf2    // buf2 = buf3
        MOVF   buf4,W
        MOVWF  buf3    // buf3 = buf4
        CLRF   buf4    // buf4 = 0

    But I was thinking if it's possible to make such a thing like:

        MOVLW 0;
        swapwf buf4; // w=buf4 buf4=0
        swapwf buf3; // w=buf3 buf3=buf4
        swapwf buf2; // w=buf2 buf2=buf3
        swapwf buf1; // w=buf1 buf1=buf2
        swapwf buf0; // w=buf0 buf0=buf1

    I know that the PIC have no instruction like SWAPWF, but...

    Best regards,

    Brusque

-----------------------------------
Edson Brusque
Research and Development
C.I.Tronics Lighting Designers Ltda
Blumenau  -  SC  -  Brazil
www.citronics.com.br
Say NO to HTML mail
-----------------------------------

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.