Date   : Thu, 28 Jul 2005 14:07:24 +0000
From   : Jules Richardson <julesrichardsonuk@...>
Subject: Re: Econet-Ethernet bridge

On Thu, 2005-07-28 at 12:33 +0000, Jules Richardson wrote:
> > Has anybody got the circuit for Acorn's Econet-Econet Bridge (one on ebay 
> > at the moment) - what's in there, and how does that manage it?
> 
> I've got the hardware; if nothing else I could grab some photos
> (probably not until tomorrow). I seem to remember it's a 6502-based
> board in there, just with two lots of Econet interface circuitry.
> Actually I need to photograph it anyway and back up the ROMs, so it's a
> good excuse...

I just dug the box out of the cupboard. It's nice and elegant inside.
Small board containing a 6502, CPU clock, 8KB ROM, 8KB static RAM, pair
of 68B54 chips, line drivers/receivers, and about 6 TTL chips for bus
buffering / address decoding. That's it. Single 5V power supply.

Will grab some photos ASAP...

cheers

Jules