Lawrence Lile wrote:
> This is a really neat structure for this routine.  What does
> isochronous mean?  (obviously "Same Time" in literal translation)
>
> .....  hmmm - does that mean that the loop takes the same time to
> execute each time through?

Yes, it takes 7 cycles for all inner and outer loops.  Can also be extended to
delay more, if needed, by adding another decfsz and goto $+1 on top of the loop.

>
> > delay:
> >         movlw   .11
> >         movwf   cnt1
> >         clrf    cnt2
> >         clrf    cnt3
> >
> > dloop   decfsz  cnt3,f
> >          goto   $+1
> >         decfsz  cnt2,f
> >          goto   $+1
> >         decfsz  cnt1,f
> >          goto   dloop

regards,
Reggie