Jeff thanks for your replay

>Read up closer on how to do a timer interrupt, use a small ISR to generate
>your signal, and anything not related to that signal can be done in the
main
>program.

I guess my choice is to add external clock for timer0 other wise
256 prescaller do not match.

> I don't think that'll add glitching if done properly.  I'm not
>seeing anything in your post that would suggest that this isn't possible.
I
>don't think you really need a second crystal unless the prescale &
postscale
>won't get you your target frequency with the present crystal, and there
>might be ways around that too.  You shouldn't need a second PIC for that.

>Jeff

thanks again

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