Date   : Wed, 17 May 2006 08:41:48 +0100
From   : Rob <robert@...>
Subject: Re: Any ideas?

Looks like a fairly neat implementation of a standard 16K sideways 
RAM.  Plug it into any convenient ROM socket, and connect the flying 
lead to ~WR somewhere.

The 6264's are surface mount versions of the normal static 8K RAM you 
see used on, e.g. ATPL boards, and the 74x04 will be used as an 
inverter on the top address line to switch between the two RAM chips.

Rob.

At 08:02 17/05/2006, M J Forbes wrote:

>Hi all,
>
>Found this in a box of Beeb bits the other day ...
><http://www.freewebs.com/mjforbes/romthing.jpg>http://www.freewebs.com/mjforbes/romthing.jpg
>http://www.freewebs.com/mjforbes/romthing2.jpg
>
>Anyone got any idea what it is?  The lettering on the chip on the 
>underside is PC74HCT - D4T if that's any help!
>
>Many thanks,
>
>Matt
>
>
>
><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
>
>Matt J Forbes
>
>Portsmouth, Hampshire, UK
>
><mailto:mjforbes@...>mjforbes@...
>
>Homerquote of the day ...
>"What's a wedding?  Webster's dictionary describes it as the act of 
>removing weeds from one's garden"
>
>No virus found in this incoming message.
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