Edson Brusque <PICLIST@mitvma.mit.edu> wrote:

>     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

Edson:

That's the fastest way to shift the values... But if you have a lot
of values (more than 4), it might be faster and take less code space
to avoid shifting altogether.  Instead of shifting, make the buffer
circular and just change the value of a pointer into the buffer.

-Andy

=== Andrew Warren -- aiw@cypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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