On Fri, 29 Sep 2000, j newton wrote:

> Ok, I have a code challenge...
>
> On a 16C5x (ok, actually an SX), I have a value in W and a value in a
> register (call it fr), and I need to subtract W + 1 from the value of fr and
> not put the result in fr. I.e. I need to find out if fr > w or maybe fr <= w
> with out destroying fr. Munching W is, of course, ok.



;-------------------
;
; fr > W

    subwf  fr,W
    skpnc
     skpnz
      goto fr_is_less_than_or_equal_to_W

fr_is_greater_than_W


If you subtract W from fr, then the Carry flag will be set and the Zero flag
cleared when fr is greater than W.

Is that what you want?

Scott

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
"[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's