Date   : Sun, 29 Mar 2009 19:30:04 +0100
From   : philb@... (Phil Blundell)
Subject: A few Econet questions

On Sun, 2009-03-29 at 18:24 +0100, Michael Firth wrote:
> Does anyone here know anything more about the unpopulated IC4 on the
> newest of the Acorn Econet modules?
>
> [...]
>  
> There is a suggestion that it is for allowing the interface to provide
> a clock to the Econet, and the connections from the unpopulated IC
> directly to two pins of the header that connects to the Econet
> connector seems to also point to this.

>From the photos at the links you mentioned, I would guess that IC14 is
intended as an alternative to IC7, perhaps as a design backup in case
the surface-mount part was unobtainable for some reason.  It's hard to
tell from the photos alone though and I don't have one of those boards
to look at.

Which pins on the Econet header is this IC actually connected to?  Can
you see where any of the other tracks go to?

p.