Date   : Sun, 12 Aug 2007 21:23:30 +0100
From   : pete@... (Pete Turnbull)
Subject: Emulating Econet hardware?

On 12/08/2007 16:16, Jonathan Graham Harston wrote:

> Do you mean SIO/1, not SIO/2? The SIO/0 has seperate transmit and
> receive clocks for Channel B, the SIO/1 has a single clock for
> Channel B. 

That's actually the wrong way round :-)

There are several versions, of which the common ones are SIO/0 and 
SIO/2.  The /0 has the Port B transmit and receive clocks bonded 
together on one pin, for applications that don't require asymmetric 
speeds; the /1 has no DTRB (the Data Terminal Ready signal on Port B); 
the /2 has no SYNC signal for port B, so that version can only do async 
comms on port B.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York