Date   : Wed, 28 May 2003 00:44:25 +0100
From   : Mark Cooke <mpc@...>
Subject: Re: Sideways RAM designs

On Tue, 2003-05-27 at 23:35, John Kortink wrote:
> On Tue, 27 May 2003 17:24:42 +0100, Nick B wrote:
> 
> >Can anybody point me towards a simple SWR design for a BBC B using 8k or 
> >16k static ram chips? I guess these were unheard on when the beeb was 
> >originally conceived as everything from that era seems to use DRAM.
> >I'd like to fit one to a model B (issue 7) without having to perform too 
> >much surgery.
> 
> No 8 or 16K, but I did jot down a recipe for 32K chips
> some years ago. It's (temporarily) available from :
> 
> http://web.inter.nl.net/users/J.Kortink/rewire.txt
> 
> It does involve a bit of work on the underside of the
> beeb's PCB.

If you bend out pin 27 on the sram/eprom so it isn't going into the
socket, you can avoid that step.

It does mean soldering to the sram/eprom or using an individual pin
connector though.

Mark

-- 
Mark Cooke <mpc@...               >