You have right Peter !
There are two registers one RCreg and one TXreg, I forgot,
ehh, that's if takes two weeks ago from my last serial applications...
So full duplex is possible...

best for your queen,
Vasile

On Fri, 15 Feb 2002, Peter Onion wrote:

> On 15-Feb-02 Vasile Surducan wrote:
> > On Thu, 14 Feb 2002, [iso-8859-1] paul carns wrote:
> >
> >> I'm a begginer with PICs. I need to communicate two
> >> 16F876. One of them has to send a message (in serial)
> >> and the other must to receive it.
> >> I was reading the PICs datasheet, but it doesn't
> >> clarify me. I think I know how transmit and how
> >> receive, but I don't know pass the message (i.e. how
> >> both PICs could transmit and receive at the same
> >> time).
> >>
> >   They can't only with SPI.
>
> Sorry, but I think you are wrong... It is easy to make a PIC transmit and
> receive at the same time.
>
> Just think about it.... If you loop back the Tx and Rx pins (by just connecting
> them together) and send data it is received OK, so the PIC must be Tx and Rx at
> the same time.
>
> If you can do it with one PIC, then if you wire Tx to Rx and Rx to Tx on two
> PICs they can both TX and Rx at the same time.
>
>
> It it possible that I have misunderstood something of course, but I'm pretty
> sure I've not.
>
> Peter.
>
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