Najemy, Daniel wrote:

> Good morning -
>
> I'm trying to do the following:
>
> I have a byte (let's call it TEMP), and I'm trying to logically 'OR'
> together 3 of the bits within the byte.
>
> ie. RESULT = (TEMP,3) or (TEMP,4) or (TEMP,5)
>
> There doesn't seem to be any bit wise 'or' functions. Any ideas on how
> to implement this?
>
> Thanks in advance
>
> Daniel Najemy -  Data General Corporation, Numaliine Power Systems


if you are talking about doing or  with higher with lower nibbles this is
what you can do.

        cblock        00
        lower
        result
        endc

         movf          temp,w        ; temp is your byte        example
00001111
         swapf         temp,w          ;                         now temp
is    11110000
         movwf        lower            ; save swaped nibbles
         iorwf           temp,w            ; do or w with temp w is lower
and temp is higher
        movwf          result            ; save it in result
        movwf           portb            ; display the result on portb

    it is not tested  if this is what you need I can make it work and send
it to you.

Andre  Abelian





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