On Mon, 12 Oct 1998, Mark Brinicombe wrote:

> On Mon, 12 Oct 1998, David Feustel wrote:
> 
> > Is it possible to wire the diagnostic port as a third serial port independent
> > 
> > of serial ports 1 and 2?
> Hi,
>   Yes it is. There are a couple of jumpers that are used to route either
> the diagnostic serial port or com2 out to the second 9 pin D connector.
> The jumpers basically control the routing of the Tx and Rx signals.
> If the jumpers are set for com2 then the the diag serial Rx and TX should
> be accessable as the unconnected pins on these jumpers. Given that the
> diag serial only has Tx and Rx and no handshaking this should not be too
> difficult to break out to a third connector.

Hi,
  The one thing I forgot to mention with this is that breaking these
signals out at this point means they are standard TTL signals and will
require RS232 line drivers before they can be fed to another serial port.

Cheers,
				Mark