> > Hi all!
>
> Hello Gabriel,
>
> >    I have a question for all of you:
>
> >   I have to connect one 16F84 to a line of an external circuit, wich is
> waiting for
> > receiving 255 bits from the 16F84. When this is done, the external
> circuit will reply
> > to the 16F84 with information, and then begins the loop begins again and
> again.
>
> >    May I connect two lines of the 16F84 (eg.: RB0 as int, and RA0) one
> being
> > configured as otuput and the other as input ?
>
> Yes.  No problem. Oki-Dokie.
>
> >    Would the Pic get burned ?
>
> No. Nope. No way.
>
> One thing though ... I suspect that that line RB0-RA0 will be the line
> that
> goes to the other device ?  It's, I hope, not used as a bi-directional
> line
> ?  Otherwise you will have the output of the other device linked to the
> output of you PIC, and that's not allowed ...
>
> By the way:  Why would you want to generate a interrupt from a signal you
> are creating yourself (RA0 -> RB0) ?
>
> Greetz,
>   Rudy Wieser
>
It sounds to me as though Gabriel wants to perform half duplex comms over a
1 wire link.

Thats OK, but when transmitting, you will have to disable interupts, and
when receiving, you will have to tri-state your transmit pin (RA0).

Regards

Mike Rigby-Jones