Mi Martin,

Please not that that fraction of code intended to use other ports than just
portb - just realized that the 'b' from the name setb is for portb only?
Then that's ok, I was just thinking of a generic way of port handling, sorry
for the confusion :-)

Anyway, yes, if you use 18F and later series, you have LAT which is way
better than any other shadow register solutions.

Tamas


On Jan 28, 2008 1:26 PM, Martin <martin@nnytech.net> wrote:

> Tamas Rudnai wrote:
> > So how would you handle this code with your macros if you modify that
> with
> > James' suggestion:
> >
> > setb PORTB,0
> > setb PORTA,1
> > nop
> > clrb PORTC,0
> > clrb PORTD,1
> >
> > ?
> >
> > Tamas
> >
> >
> >
> Tamas, my macros are defined like this now:
>
> setb    macro    pin
>    bsf        portbbuf, pin
>    movff    portbbuf, PORTB
>    endm
>
> clrb    macro    pin
>    bcf        portbbuf, pin
>    movff    portbbuf, PORTB
>    endm
>
>
>
> But like Wouter and Robin reminded me, this PIC has the LAT registers
> that can be safely used with read-modify-write operations. Much nicer.
>
> -
> Martin
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