Date   : Sat, 17 Oct 2009 20:46:42 +0100
From   : jgh@... (Jonathan Graham Harston)
Subject: ROM upgrades on the cheap

Rick Murray wrote:
> I am not that interested in SRAM, but the ability to have IC100 and
> IC101 take up to four ROM images in a larger EPROM.
 
http://mdfs.net/Info/Comp/BBC/SROMs/32K
 
  +----------------------------  A15 via IC76 p12
  |
  |        +----__----+
  +--------+ 1     28 +
           + 2     27 +--------  A14 via IC76 p11
           + 3     26 +
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
Whitby Yards Gazetteer - http://mdfs.net/Docs/Books/YofWhitby/Gazetteer