Date   : Tue, 27 May 2003 19:40:55 +0100
From   : Nick B <nickbeee@...>
Subject: Re: Sideways RAM designs

Dom Wright wrote:

>I remember making one, it was quite simple - but now I can't remember how:-(
>Some of the static ram chips were pin-for-pin equivalents (especially the
>CMOS ones) for the BBC ROMS, all you had to do was bend a pin or two out and
>connect them to the R/W line.
>
>SRAM chips were available long before the Beeb was about.
>  
>
Yes ISTR at that time they were 2114 1k x4, if you wanted more memory 
you had to pay big money or use dram.

I have just located a design that uses 6264 SRAM chips on 
http://home.iae.nl/users/bverhoev/ , "The Electron Lives" website. Just 
what I was looking for...

BTW I'm new to this list, having just re-kindled my interest in 8-bit 
acorn machines. I picked a couple up cheaply over that last few years 
and I'm in the process of refurbishing them. I would have liked a Beeb 
back in 1985 but at the time £400 was way out of reach for me.

Regards,
Nick.