Date   : Sun, 23 May 2010 21:06:32 +0100
From   : bbcmicro@... (Ian Stocks)
Subject: Atom video RAM replacement

Phill Harvey-Smith wrote:
> Hi all
> 
> I seem to remember seeing somewhere a diagram for replacing the 12x2114 
> chips in the Atom's video RAM with a single 8K chip but can't seem to 
> find it again....can anyone point me in the right direction....

This sort of thing?

http://arduinonut.blogspot.com/2009/10/atom-vram-mod.html

No diagram, but I would have thought it fairly easy to pick up the right 
signals for the address and data bus, and get the extra address lines 
from pins 1,2 and 3 of IC30 (as shown with the three grey wires in the link.

Ian.